Table of Contents - UNDP | Procurement Notices

مشروع التجديد الحضري والإنتاجية في القدس الشرقية

/برنامج مساعدة الشعب الفلسطينيالإنمائيبرنامج الأمم المتحدة تنفيذب

في مدينة القدس الإسلاميةبالشراكة مع دائرة الأوقاف

بتمويل من:

(.……………………عطاء رقم )

أعمال التأهيل لمبنى بلاط الرشيد

Renovation Works of Balat Al Rashid Building (SS002)

Mechanical Specification

Consultants:

معماريون ومهندسون -و شركة زيادة مكتب دور للهندسة و التخطيط

7102/حزيران

Balat Al Rashid Building SS002 DIVISION 15 - PLUMBING AND MECHANICAL

Ziadah - Architects & Engineers 1 Specifications

Mechanical Specifications

Index

Section Title

15000 Air-Conditioning and Ventilation / HVAC

15010 Basic Mechanical Requirements

15060 Hangers, Supports and Fire stopping

15070 Mechanical Sound, Vibration and Seismic Control

15075 Mechanical Identification

15080 Mechanical Insulation

15175 Tanks

15410 Plumbing Piping

15411 Plumbing Valves

15430 Plumbing Specialties

15440 Plumbing Fixtures

15451 Water Heaters 15453 Plumbing Pumps

15530 Fire Fighting System

15611 Variable Refrigerant Flow (VRF)

15671 Heat Pump Chillers

15733 Packaged Rooftop Air Conditioning Units-(Not Included in this Contract)

15739 Split System Air Conditioning Units

15742 Fan-coil Units-(Not Included in this Contract)

15810 Ducts

15820 Duct Accessories

15830 Air Distribution Equipment (Fans)

15870 Air Outlets

15950 Testing, Adjusting and Balancing

15992 Mechanical Commissioning

14215 Electric Elevator-(Not Included in this Contract)



SECTION 15000

AIR-CONDITIONING AND VENTILATION / HVAC

PART 1 - GENERAL 1.1. SCOPE OF WORK

A. Internal environmental design conditions and external ambient conditions

B. System Design Criteria

1.2. RELATED WORK

A. Section 15950: Testing, Adjusting and Balancing

1.3. REFERENCE STANDARDS

A. The air conditioning system has been designed in accordance with the

following standards:

ASHRAE American Society of Heating Refrigeration and Air

conditioning Engineers

SMACNA Sheet Metal and Air Conditioning Contractor's

National Association Inc.

UMC Uniform Mechanical Code

B. All mechanical equipment used in the air conditioning system shall be in

accordance with the following codes and standards:

A.R.I Air Conditioning and Refrigeration Institute

ANSI American National Standards Institute



ASME American Society of Mechanical Engineers

UL Underwriters Laboratories

1.4. SCOPE OF WORKS

A. The work covered under this section shall include all the supply, installation,

testing, commissioning, maintenance and delivering in good operating

conditions of complete air conditioning and ventilation systems as described in

these specifications and shown on drawings and bill of quantities



B. The Contractor shall provide all the necessary components and accessories as

well as materials, manpower, equipment, tools, scaffolding, painting, testing

facilities, supervision and overhead, etc., at his own expense to execute a

complete operable system

C. The Contractor shall obtain the necessary information and instruction for the

execution of the works only from the Engineer and not from third parties

D. The Contractor shall program his work such that it will not interfere with other

trades and to suit site requirements

E. Schedules and specifications including but not limited to the following:

i. To check the design and to undertake the responsibility of giving

the design conditions in the occupied areas

ii. To supply, install and commission the air-conditioning plant to

the satisfaction of the Engineer

iii. To connect fan coil units drains to the nearest drain point

iv. To provide power supply to the individual, outdoor VRF units,

indoor VRF units, and pumps

1.5. DESIGN CONDITIONS

A. General: The installation is based on the following design conditions, capacities

and dimensions given in the specifications and drawings will be considered as

the minimum to be accepted and it is the responsibility of the contractor to

select all unspecified equipment to attain the required design and guarantee

conditions

B. External Conditions

i. Dry Bulb Temperature (summer) 39 oC

ii. Dry Bulb Temperature (summer) 21 oC

iii. Dry Bulb Temperature (winter) -2 oC

C. Internal Environmental Conditions

No. Description T @Summer

[oC]

Relative

Humidity Ventilation

1. Offices, shops, reception and staff lounge 21 50% RH 7.5 L/s-person

2. Lobbies corridors 21 50% RH 7.5 L/s-person

3. Meeting, waiting 21 50% RH 10 L/s-person



D. Acoustic Treatment

Particular attention shall be paid to alleviation of interior and exterior noise

levels through windows and structure. Noise attenuation shall be achieved by

the use of appropriate materials and techniques. In the design of public areas

and guest areas. Special acoustic treatment shall be provided to alleviate defects

within the rooms and noise transmission outside the rooms

Maximum indicative noise levels are as follows:

i. Offices 25 - 35 RC (N)

ii. Lobbies 40 – 45 RC (N)

iii. Corridors 40 - 45 RC (N)

iv. Meeting rooms 25 – 35 RC (N)

v. Stage area 25 RC (N)

1.6. HVAC CONTROL SYSTEM

A. Chilled water design parameters are:

i. Supply temperature at 7 oC

ii. Flow rate = 0.15 L/s at 5 oC

iii. Temperature rise AS LWT = 7 oC

iv. EWT = 12 oC

B. The chiller control Panel shall include a sequence panel which will control the

sequence of operation of the chillers in response to cooling demand. The

sequence of chillers will be initiated by temperature sensors which monitor the

supply water temperature

PART 2 - COORDINATION WITH STRUCTURE AND THE SERVICES 2.1. GENERAL

A. The Contractor shall ensure that all items of equipment, ductwork and pipe

work are capable of being located in their allocated positions, after due

consideration to their coordination with the building structure, ceiling levels

and other services, before ordering or manufacturing any items

B. Any modification necessary on site to ensure full coordination of services shall

not in any way defer from the performance of systems as a whole

PART 3 - EXPANSION AND CONTRACTION 3.1. GENERAL

A. Special consideration shall be given to the design and installation of pipe

work to ensure that expansion and contraction resulting from extremes of

temperature can be accommodated freely without causing damage to the pipe

system or the building



B. Where pipes do cross, expansion joints, expansion fittings should be used.

PART 4 - COMMISSIONING 4.1. GENERAL

A. The Contractor shall allow for all water and air distribution services to be

balanced and commissioned in accordance with the relevant commissioning

codes published by the Chartered Institution of the Building Services

Engineers

B. The balancing and commissioning of all air-conditioning circuits shall be

carried out by the contractor

C. The Contractor shall supply and install on all air distribution systems all test

points required in order to commission the systems completely. Testing and

commissioning results shall be submitted to the Engineer for approval by the

Engineer

D. The Contractor will be particularly required to show, in distribution systems,

that the correct design static pressure will be available at the most remote

diffusers

END OF SECTION 15000



SECTION 15010

BASIC MECHANICAL REQUIREMENTS

PART 1 - GENERAL 1.1 SCOPE OF WORK

A. This Section covers the basic general requirements applicable to all

Division 15 works that shall be provided for by the Contractor.

B. The following specifications may be used as a guide for pricing but the

Contractor will be fully responsible for the mechanical services as

indicated diagrammatically on the drawings and to supply complete

Mechanical Services Installations to the approval of the Engineer and

complying with the aesthetic requirements of the Architect/Interior

Designer. 1.2 CALCULATIONS

A. The Contractor shall acquaint himself with the constructional details

of the buildings and exterior works both before and during the course

of erection and shall take his own particulars with regard to the

installation of mechanical equipment. The Contractor shall check

the sizes of all mechanical equipment taking into account any

additions or deletions required to ensure the installations fit into the

room or other spaces allocated and in relation to other plant and

equipment being provided.

B. The Contractor shall undertake and prepare all necessary calculations

and drawings relating to the mechanical systems and equipment and

for all associated foundation, structural and builder's and services

work, except where specifically defined otherwise in the Specification

and/or on the Drawing.

C. The Contractor shall provide and submit to the Engineer all

calculations, drawings and supporting data for the mechanical

equipment.

D. The Contractor shall provide calculations, details, drawings and

technical data to enable the Engineer to ascertain the correctness of the

specialist designs of the associated foundations, supports, bases and

fixings.

1.3 SUBMITTALS

A. The Contractor shall provide submittals as directed in the individual sections.

B. The Contractor shall provide method statements for

installation procedures of ductwork, pipework, plant, equipment

and automatic controls and all specialized systems.



1.4 WORKING DRAWINGS

A. The Contractor shall provide for approval working drawings of the whole

mechanical works. The drawings shall include, but not necessarily be

limited to the followings:-

1. Co-ordinated general arrangements of all services to a scale of not less

than 1:50

2. Co-ordinated detailed layouts of plant rooms and similar spaces to a

scale of not less than 1:20.

3. Schedules of all equipment should include full technical information

together with starting and full load current and running power

consumption along with any integral power factor correction

capacitors.

4. Indicate with accurate dimensions sizes and positions of all plant,

equipment, pipes, thermal and acoustic insulation, conduits, cable

tray, cables together with all inspection points and cable joints.

5. Fully indicate all ductwork, pipework, sizes and positions of all plant

equipment and valves together with all inspection points and test

positions.

6. Ductwork shall be drawn with double line showing the actual duct

width.

7. Indicate invert level for all ducting and piping showing the height of

the bottom edge from finished floor level.

8. Provide enlarged sections for all critical areas where multiple services

are crossing each other.

9. Provide riser diagrams for all services showing sizes, flow rates,

velocity and pressure drop of all Medias.

10. Provide coordinated reflected ceiling plans showing all

electromechanical components including access doors and markings

of services above false ceilings.

11. Fully indicate all builders’ work requirements inclusive of all

foundations, bases, plinths, sumps, openings in walls and slabs

together with the overall sizes and masses of the plant concerned.

12. Indicate the number, size and services for every cable, duct, pipe for

every service within the building.

13. Indicate all equipment and control wiring diagrams for all systems.

14. Show all pipes, cables and ducts in pits and service ducts on drawings

to a scale of 1:50 or larger.



15. Show clearly all plumbing and drainage and setting out dimensions.

for all drainage pipe work and manholes, both within the building and

throughout.

16. Indicate services zoning principle in cross-section for each ceiling

void area having extensive engineering. The sections are to

demonstrate the sizes, dimensions of zones allocated for separate

HVAC, public health, electrical, and other engineering services along

with services cross-over zones, support/brackets zones thermal

insulation, clearance and maintenance allowances to demonstrate the

correct coordination.

12. Fully indicate extent and construction/installation details for all

acoustic, noise and vibration control systems including inertia bases

and plant room. B. The symbols used for each service for all working drawings shall be shown on

separate drawings.

C. In addition to the working drawings, the Contractor shall obtain and provide at the

request of the Engineer, two sets of all manufacturers’ detailed drawings for all

items of plant, equipment, apparatus and materials. These drawings shall be

suitably titled and have drawings references number added. Specific requirements

are given in the individual specification Sections. D. All drawings, diagrams and schedules called for in this clause shall be submitted

to the Engineer for examination and approval. E. The Contractor shall make due allowance for an approval/comment period and it

must be clearly understood that the correctness of the submitted information will

directly affect this comment/approval period. F. The Contractor shall be responsible for co-coordinating all HVAC,

mechanical, electrical, lift, fire protection, plumbing, drainage and other

engineering systems such that each may be installed in a proper manner, ensuring

correct performance and allowing adequate maintenance access. All services

shall be installed such that the positioning of ducts, pipes, cables, and all items of

equipment avoiding conflict and have adequate clearances from walls, slabs and

pathways. The Contractor's working drawings shall be fully co-ordinated with

other trades to ensure that all conflicts are resolved prior to submission to the

Engineer for approval. Tender drawing shall not be reissued as working drawings. 1.5 CONSTRUCTION DRAWINGS

A. Following approval of the Contractor's drawings by the Engineer, they shall

constitute "Construction Drawings" and the E and M equipment shall be

manufactured and installed in accordance with those approved drawings. The

acceptance by the Engineer of any such drawing shall not relieve the Contractor

of his responsibility under the Contract and shall not commit the Engineer or

make the Engineer liable for any mistake of the manufacturer's deficiencies in

strength or efficiency in operation of any part of any item for its specified

purpose.



B. The Engineer reserves the right subsequently to amend or add to the

Construction Drawings as may be necessary or expedient. C. The Contractor shall provide to the Engineer, immediately after approval of each

detailed drawing, one copy and two dye-line prints and computer files on CD.

1.6 REGULATIONS

The installation materials and components shall comply with all relevant

statutory instructions and regulations current at the date of tender,

whether so detailed or not. In particular, the following regulations and

standards must be followed: -

A. Standards issued by local organization

B. Codes, rules and regulations issued by the local Civil Defense.

C. British and/or American Standard Specifications

D. British and/or American Standard Code of Practice

E. UK IEE Regulations for Electrical Installation

F. US National Electrical Code

G. US National Electrical Safety Code

H. UK Chartered Institution of Building Services Engineers (CIBSE)

I. The American Society of Heating, Refrigerating and Air Conditioning

Engineers (ASHRAE)

J. Electrical Regulations issued by local authorities

K. US Sheet Metal and Air Conditioning Contractors National Association

(SMACNA)

L. US National Fire Protection Association Standards (NFPA) M. IEE

Regulations for Electrical Equipment of Buildings

N. U.K. CIBSE Commissioning codes for Air, Water, Refrigeration and Controls

Installations.

O. One copy of all the above codes and standards in hard-copy are to be held on

site for the duration of the contract and be available for reference by the

Contractors and Clients Site Supervision Teams.

1.7 WORKMANSHIP AND MATERIALS

A. The Contractor shall be responsible for ensuring that the components for

each system are mutually compatible and integrated to form fully efficient

systems complying with the Drawings and Specification. Corresponding



parts throughout the Works shall be made to gauge and be interchangeable

wherever possible. The Contractor shall, when required by the Engineer,

prove interchangeability by the actual interchange of the various parts.

B. All articles and materials specified to conform to local, British and other

standards shall be clearly and indelibly marked with the appropriate

standard number specified except where marking is impracticable when

relevant documents shall include this information.

C. All materials and workmanship shall be to the satisfaction of the

Engineer. The Contractor shall maintain a competent supervising engineer

and supervisors for each specialization and for each section of the work on

Site throughout the whole of the time to the completion of the works. The

Engineer shall give prior approval to the appointment of this supervising

engineer and shall have the authority to withdraw this approval at any

time. No person shall be allowed to execute any type of work that is

normally carried out by a skilled tradesman unless he is thoroughly

experienced and proficient in the trade concerned. The Engineer shall

have the authority to require any tradesman to demonstrate his proficiency

to the satisfaction of the Engineer.

D. Where "stainless steel" is specified or used it shall have

resistance to atmospheric corrosion and be of a grade to suit its

particular use. Particular attention shall be made to the prevention of

seizure by fretting where two corrosion resistant metals are in

contact, by the selection of materials of suitable relative hardness

and surface finish and the applications of lubricants. Where bronze

is specified or used it shall be zinc free.

E. Non-destructive tests will be required for any casting containing

defects whose extent cannot otherwise be judged, or to

determine that repair welds have been properly made.

F. All major stress-bearing forgings shall be made to a standard

specification that shall be submitted to the Engineer for approval

before work is commenced. They shall be subject to internal

examination and non- destructive tests for the detection of flaws and

shall be heat-treated for the relief of residual stresses. The name of

the maker and particulars of the heat treatment proposed for each

such forging shall be submitted to the Engineer. The Engineer may

arrange for such forgings to be inspected at the place of

manufacture with a representative of the Contractor.

G. Particular attention shall be paid to the prevention of corrosion due to the

close proximity of dissimilar metals. Where it is necessary to use

dissimilar metals in contact, they shall be protected by wrapping with an inert material.

Jointing of dissimilar pipes shall always be done using di-electric unions.

H. The use of iron and steel shall be avoided in instruments and

electrical relays



wherever possible. Steel screws, when used, shall be zinc, cadmium

or chromium plated or, when plating is not possible owing to

tolerance limitations, shall be of corrosion resisting steel. All

woodscrews shall be of dull nickel-plated brass or of other

approved finish. Instrument screws (except those forming part of a

magnetic circuit) shall be of brass or bronze. Spring shall be of non-

rusting material, e.g., phosphor bronze or nickel silver, as far as

possible. Pivots and other parts of which non- ferrous material is

unsuitable shall be of approved restless steel where possible.

I. The contractor shall submit a qualified welding procedure from a

recognized institute for all types of welds including but not limited to the

pipe work. Welders shall present a first degree valid certificate of

proficiency in this trade.

1.8 INSPECTION AND TESTS AT MANUFACTURER'S WORKS

A. The Engineer and his duly authorized representative shall have at

all reasonable times access to the Contractor's premises to inspect

and examine the materials and workmanship of mechanical equipment

being manufactured there, and if part of such equipment is being

manufactured on other premises, the Contractors shall obtain for the

Engineer and for his duly authorized representative permission to

inspect as if that equipment was manufactured on the Contractor's

own premises. Such inspection, examination or testing, if made,

shall not relieve the Contractor from any obligation under the

Contract.

B. All works, materials and the like rejected shall be corrected or

replaced as necessary at the Contractor's own expense to the

satisfaction of the Engineer.

C. Where the mechanical equipment is a composite unit of several

individual pieces manufactured in different places, it shall be

assembled and tested as one complete working unit, at the

manufacturer's works, to the relevant test or tests required.

D. The Contractor shall submit his proposed programme of tests for

e n g i n e e r s' approval six weeks before the commencement of testing.

E. The aforementioned works tests carried out before delivery to the

Site shall not in any way relieve the Contractor of completing

satisfactory Site tests after erection as specified.

F. The Contractor shall give the Engineer reasonable notice, at least ten

clear days in writing, of the date and the place at which any

mechanical Equipment will be ready for testing as provided in the

Contract and the Engineer shall thereupon at his discretion notify the

Contractor of his intention either to release such part upon receipt of

works tests certificates or of his intention to inspect such part. The

Contractor shall forward to the Engineer six duly certified copies of all

relevant test readings.



G. The Contractor shall provide, free of charge, such labor,

materials, electricity, fuel, water, stores, apparatus, instruments and

other things as may be reasonably demanded to carry out efficiently

such tests of the mechanical equipment in accordance with the

Contract, and shall provide facilities to the Engineer or to his

authorized representative to accomplish such testing. Where inspection

or testing is to be carried out at a Sub- contractor's works, a

representative of the Contractor shall be present.

H. Works tests shall also be carried out with due consideration is given to

the Site conditions under which the mechanical equipment is required

to function. The test certificates shall give all details of such tests.

I. Specific performance works tests are described in the relevant

Sections of Division 15, and include all major items of Mechanical,

HVAC and Plumbing plant and equipment.

1.9 CERTIFIED DRAWINGS

A. The Contractor shall be responsible for providing all "Certified"

drawings from manufacturers of mechanical equipment, prior to their

manufacture and installation. A "Certified' manufacturer's drawing

shall mean a drawing which is prepared by a manufacturer

showing the exact dimensions and details of items of the mechanical

equipment, as they will be supplied and installed on the site. 1.10 SAMPLES

A. The Contractor shall provide a sample, properly labeled, of all fittings,

valves, insulation, cocks, unions, grilles, dampers, switchgear, cables and other

like accessories described in the Specification or as required by the Engineer. 1.11 PROTECTION AND CARE OF PLANT AND EQUIPMENT

A. All mechanical equipment shall be packed in robust containers to prevent

damage and mishandling during transport to Site. Before dispatch from works,

all mechanical equipment shall be thoroughly cleaned, protected against

damage, deterioration, corrosion and ingress of dirt and packed and protected

suitable for prolonged storage in a humid and saline atmosphere.

B. During storage and erection at the Site, the mechanical equipment shall be kept

clean and free from dirt and debris, and water shall not be allowed to remain in

any pockets of the equipment. All items of mechanical equipment shall be

stored clear of the ground on suitable timbers to the approval of the Engineer.

C. All mechanical equipment, particularly electrical and other sensitive

instrumentation shall at all times be protected so that it is not subject to damage

by rainwater, moisture, dust, etc., from any source. Mechanical equipment that

may be damaged by heat or sun shall be protected accordingly. All open pipe

and duct ends whether installed or in store shall be fitted with plastic caps or

suitable protective covering.



1.12 GUARDS

A. A guard shall be provided for all open unprotected intakes to axial fans,

centrifugal flow fans, for V-belt drives.

B. Fan guards shall be manufactured by the fan maker, of galvanized steel wire

mesh, not greater than 25mm attached to a rigid galvanized steel rod

framework.

C. Guards to V-belt drives shall be made of galvanized steel wire of at least

12 gauge, with a mesh not greater than 12.5mm attached to a rigid galvanized

framework of rods of not less than 10mm diameter. The guard shall be readily

removable to permit the belts to be changed. Adequate access panels shall be

provided in the side of the guard to allow tachometer readings of the two

shafts to be taken and belt tension tested. Allowance shall be made for the

adjustment of the motor on its slide rails.

1.13 CLEANING

A. The Contractor shall be responsible for cleaning all mechanical equipment

at all times to the satisfaction of the Engineer. The cleaning shall be

carried out notwithstanding the fact that the installation or any part thereof

may be in use or partial use within the premises in occupation by others. A

Certificate of Completion will not be issued until the Engineer is satisfied

that all dirt, jointing materials and other extraneous and injurious materials

have been removed. 1.14 AIR CONDITIONED STORES

A. The Contractor shall provide air-conditioned site stores for all goods that

deteriorate when subjected to the site climatic conditions detailed. The

contractor will adhere strictly to the Manufacturer's instructions with

regard to storage temperatures for all materials being used for the

construction of this project. 1.15 PAINTING

A. All items of painting covered by this section of the Specifications shall be carried

out by skilled operatives in this field of work approved by the engineer.

The contractor shall ensure that the specialist painting contractor is acquainted

with all the conditions of the work, specification, hours of working, completion

date(s), etc., and he shall complete all Works within the program specified. The

painting work shall not be commenced unless otherwise approved in writing, until

the whole or part of the installation has been completed and tested as set out in the

relevant pipework, plant and air distribution of the Specification.

All painting shall be as detailed hereafter, unless specifically detailed otherwise

under the relevant Clause of the Technical Specification.



All painting materials shall be as manufactured by an approved manufacturer

and shall be delivered in sealed containers, clearly labeled with type of material

and intended use. The following surface treatments shall be applied to all areas

detailed under this Section of the Specification unless stated elsewhere in the

Specifications.

B. Types of Surface Treatment

1. Method 1: The surface shall be thoroughly wire brushed degreased and given

one coat of primer as the installation proceeds.

2. Method 2: The surface shall be hot dip galvanized in accordance with

B.S.729. After installation, the surface shall be thoroughly degreased by solvent

washing followed by one coat of undercoat/primer to suit the final coat of HIGH

BUILD ALKYD Gloss to suit the Engineer's color scheme for the B.S.4800

range of colors.

Any damage caused to the galvanizing by burning or cutting shall have all

weld splatter and swarf removed and patch primed prior to the paint system

detailed above.

3. Method 3: Shot blast all surfaces to SA 2.5 at manufacturer's works and within

4 hours (or before corrosion sets in, whichever is the sooner) apply one coat of

Zinc Phosphate Primer 2-1-10 to 75 micron thickness and one coat of

Micaceous Iron Oxide 2-4-01 to 60 micron thickness.

After installation apply one coat of Micaceous Iron Oxide 2-4-01 to 60 microns

thickness, followed by one coat of High Build Alkyd Gloss to suit the

Engineer's color scheme from the B.S.4800 range of colors.

4. Method 4: The surface shall be shot blasted to SA 2.5 to give a minimal profile

(maximum profile 50 microns) followed by one coat of HT Silicone Aluminum

paint in the manufacturer's works.

Any damage to the treatment caused in transit or installation shall be made

good.

5. Method 5: The surface shall be wire brushed and degreased, painted one coat

of primer as installation proceeds, followed by one coat of undercoat/primer

to suit the final coat of High Build Alkyd Gloss to suit the Engineer's color

scheme from the B.S.4800 range of colors.

6. Method 6: Surface shall be painted with one coat of High Build, suitably thinned

with thinners, followed by one coat of Spread Valve Undercoat to suit the

final coat of High Build Alkyd Gloss to suit the Engineer's color scheme from

the B.S.4800 range of colors.

C. Painting in Plant room:

1. All un insulated pipework, flanges, unions, valves, trench covers and handrails



shall be treated as Method 5.

2. All steel pipework to be insulated shall be treated as Method 1.

3. All pipe support to be galvanized shall be treated as Method 2.

4. Supporting steelwork for hoppers, gantries, hot wells, silos, tanks and all other

structural steelwork shall be treated as Method 3.

5. All black steel hot wells, hoppers, silos, tanks and other fabricated mild steel

equipment not detailed elsewhere shall be treated as Method 3 unless stated

otherwise elsewhere in the Specifications.

6. All equipment and plant delivered to site in a prefinished condition shall have all

damage made good prior to handover.

D. Painting in Voids, Shafts and Ducts:

1. All un insulated pipe work shall be treated as Method 5.

2. All steel pipework to be insulated shall be treated as Method l.

E. Painting Externally:

Painting externally shall be in accordance with that detailed for Plant Rooms

with the following exceptions:

Where supports are installed in concealed positions, i.e. underground trenches

and tunnels etc, they shall be hot dip galvanized only.

F. Protective Painting:

Provide a heavy field coat of black asphalt paint on all steel pipe, cradles,

vibration isolating mounts, and the like, that will be encased or partially encased

in building construction, set in cement or fill, before items are built into the

general construction. Kitchen range hood ducts and boiler breeching shall be

painted with heat resistant paint.

Coat interior of each outdoor air chamber with two coats of odorless, rust

resisting, non-scaling paint.

Coat interior of ducts near air outlets and register boxes with two coats of black

paint, to a dull finish so as galvanization cannot be seen from room side.

All pumps, motors, and all other factory manufactured and assembled apparatus

shall be factory coated with one coat of primer and one coat of machinery

enamel, and after installation shall be cleaned and touched up to repair any

damage incurred during construction.

1.16 MANUFACTURER'S NAMEPLATES



A. Nameplates: Each item of mechanical equipment and plant shall have the

manufacturer's name or trademark on a corrosion-resistant nameplate, securely

affixed in a conspicuous place. The manufacturer's name or trademark may be

cast integrally, stamped or otherwise permanently marked upon the item of the

equipment. The nameplate shall show the equipment reference number, date of

manufacture and the capacity. Such other information as the manufacturer may

consider necessary to complete identification shall be shown on the nameplates.

1.17 LABELS

A. Identification labels shall be provided for all equipment, controls,

switches, valves, ducts, pipes, electrical components and outlets.

B. The labels shall bear the identification shown on the Drawings, such as

indication, designation, function and where applicable phase, voltage, current,

frequency, pressure and temperature. All labels shall be in Arabic and English.

C. Specific labeling shall be provided for hazardous systems such as isolation

room's exhaust and laboratory exhaust. Identification to the type of exhaust with

warning notes as to the danger involved shall be put along the duct work and

on the extract fans on the roof.

1.18 LUBRICATION

A. The Contractor shall furnish a complete schedule of recommended oils and

other lubricants. The number of different types of lubricants shall be kept to a

minimum. The schedule and the name of the supplier of the lubricants shall be

submitted to the Engineer for approval before incorporation in the instruction

manuals. In the case of grease lubricated roller type bearings for electric motors,

a lithium base grease is preferred.

B. Where lubrication is affected by means of grease, preference shall be given

to a pressure system that does not require frequent adjustment or recharging.

Frequent, for this purpose, means more than once weekly and grease systems

having shorter periods between greasing should be avoided. Where

necessary for accessibility, grease nipples shall be placed at the end of

extension piping and, when a number of such points can be grouped

conveniently, the nipples shall be brought to a battery plate mounted in a

convenient position. Button head type nipples shall be of the same size and type

for every part of the plant. Arrangements shall be provided to prevent bearings

being overfilled with either grease or oil.

C. Where more than one special grease is required a grease gun for each

special type shall be supplied and permanently labeled.

D. Oil sumps shall be fitted with oil level indicators of the sight glass type, or

where this is not practical, with dipsticks. The indicators shall show the level

of all temperatures likely to be experienced in service. The normal, maximum

and minimum levels at 30oC shall be clearly visible in the sight glass type from



the normal access floor to the particular item of plant, and they shall be easily

dismantled.

E. All sight glasses shall be firmly held and enclosed in metal protection in such

a manner that they cannot be accidentally damaged.

F. All lubrication systems shall be designed so as not to present a fire hazard.

Particular care shall be taken to prevent leakage of lubricants and to avoid

leaking lubricants coming into current contact with any electrical

equipment, heated surfaces or any other potential source of fire.

G. The Contractor shall supply flushing oil for each lubrication system when an

item of plant is ready for preliminary running and a sufficient quantity of the

approved lubricants for setting to work and for the commercial operation for one

year after the relevant Certification of Completion has been issued. 1.19 SPECIAL TOOLS

A. The Contractor shall supply two complete sets of any special tools

necessary for the operation, maintenance and dismantling of the

mechanical equipment. The Contractor shall supply wall-mounted strongboxes;

each fitted with a suitable lock and two keys, and located near the item of

mechanical equipment for which they will be used. Such tools shall not be

used by the Contractor during the erection of the mechanical equipment.

1.20 SUNDRY BUILDERS WORK IN CONNECTION WITH SERVICES

A. The Contractor shall include in his prices for drilling, raw bolting,

plugging, screwing and nailing of all brackets and hangers for all

pipework, ductwork conduit, cable tray, cable trunking and cable supports.

The Contractor shall also include for supplying all brackets, hangers and

supports as necessary. 1.21 NOISE

A. Noise Criteria

Refer to Specification Section 15070.

B. The Contractor shall provide a quiet installation. All items of mechanical

equipment shown on the Drawings shall be carefully chosen with a view to

silent operation. The recommendations in BS 5720 and BS 8233 shall be

followed wherever necessary. The Contractor shall prepare detailed noise level

calculations to indicate the anticipated noise levels in all occupied areas. Fan

chambers, technical rooms and chillers yard shall be constructed to ensure

that noise levels in surrounding spaces meet specified levels.

C. All possible steps shall be taken, (e.g. by the use of sound insulation, anti-

vibration mountings, floating floors, walls, ceilings and careful design of

pumps, motors, fans, ducts, bends, dampers, grilles and other equipment) to

reduce the noise produced by the mechanical equipment.



D The Contractor shall determine the noise levels of all primary mechanical

equipment before proceeding with manufacture and submit sound power levels

of such equipment and resultant room noise levels to the Engineer for

approval before manufacture is commenced.

1.22 ANTI-VIBRATION MOUNTINGS AND SOUND ABSORPTION

A. The Contractor shall provide and fix all mechanical equipment to prevent

noise and the transmission of vibration through the structure.

B. All fans, motors, compressors, pumps and other items, as appropriate, shall

be mounted on resilient mountings in such a manner that the plant foundations

are isolated from the floor or structure. Pumps shall be installed on inertia

bases. In addition, all rotating plant shall be statically and dynamically

balanced.

C. Mechanical vibration shall be eliminated by the use of anti-vibration

mountings and flexible connections to ensure an isolation efficiency in excess

of 98% from the building structure except where defined otherwise on the

Drawings or in the Specification.

D. Spring type anti-vibration mountings shall be the captive partially encased and

restrained type to prevent lateral movement.

1.23 AS BUILT DRAWINGS

A. “As Built” record drawings are to be produced as the installation work is

completed. The working drawings shall be checked against the installation,

corrected and issued for approval. The Contractor shall provide a delivery schedule

of the drawing submissions based on the construction programme. Thirty days

prior to the date of the handing over certificate, the Contractor shall provide the

final copy of the "as built" record drawings of the whole works for approval.

B. The Drawings shall include the following:-

C. General arrangements of all services to a scale of not less than 1:50.

D. Detailed layouts of plant rooms and similar spaces to a scale of not less than 1:20.

E. Schedules of all plant and cross referenced equipment to the maintenance

manual.

F. All equipment and control wiring diagrams. Diagrams must be co-ordinated and

show all required interlocks etc. between systems or components.

G. Indicate with accurate dimensions, sizes and positions of all plant, equipment and

valves together with all inspection points and test positions. All plants to have

indicated manufacturer's name, model and type number also cross- referenced to

maintenance manual.



H. Fully indicate all ductwork, pipework, sizes and positions of all plant

equipment and valves together with all inspection points and test positions. All

plant to have indicated manufacturer's name model and type number also cross-

referenced to maintenance manual.

I. Show the disposition and depth of all cables, pipes, ducts, buried direct in the

ground and taken at intervals where cable increase or decrease in number/size and

at every point where the services enter into or depart from ducts or buildings.

J. Indicate the number, sizes and services for every cable, duct, and pipe, for

every service within each building. Circuit lists for every distribution board shall be

entered on to the relevant drawings and such lists shall agree with the list fixed

within the distribution board door.

K. Show clearly on site drawings all the new buildings together with all other existing

buildings and other permanent features with dimensions between such

buildings

L. Cables, pipes, ducts, etc. clearly marked, together with installed backfill and

surround to each services.

M. Show clearly all plumbing and drainage and setting out dimensions for all drainage

pipework and manholes both within the building throughout the site, together with

drainage pipework backfill, or surround in each location. A schedule shall be

included to indicate each manhole size, cover size, invert level and ground level.

N. The symbol used for each service for all as built drawings shall be shown on

separate drawings.

O. In order to achieve accurate as built drawings, all relevant information relating to

the mechanical works shall be entered onto prints supplied immediately after

the work has been carried out. The marked up prints shall be available for

inspection at the Contractor's site office at any reasonable time during the progress

of the works.

P. All service routes, intersections and joints shown on the prints and finally

recorded shall be actually physically measured from permanent features and

accurate distances shall be shown on the Drawings.

Q. In addition to the ”as built drawings”, the Contractor shall obtain and provide two

sets of all manufacturers’ detailed drawings for all items of plant, equipment,

apparatus and materials. These drawings shall be suitably titled and have

drawing reference numbers added.

R. The Contractor shall provide two copies of all “as built drawings” for review

comments and approval. Upon receiving approval in writing from the

Engineer, or his representative.

S. The Contractor shall provide one negative copy of each approved as built

drawing and bind one set of prints into each of 6 No. copies of the operating



instructions specified in clause 1.25. 1.24 OPERATING AND MAINTENANCE INSTRUCTIONS

A. The working, operating and maintenance instruction shall be prepared in draft as

soon as the working drawings are in hand as the work progresses and shall take the

form of a manual in which fully detailed information relating to the maintenance

and operation of the complete installation and its component parts is presented.

B. Overall general description of the complete equipment installed together with the

method of functioning.

C. Full technical descriptions of each and every item of equipment, including the

electrical circuit details as applicable.

D. Operating procedures for each section of the works and each individual item of

equipment or plant.

E. Planned maintenance schedules for the installation and its component parts to

include commissioning performance details and measurements.

F. Schedule of components comprising each and every item of equipment

including manufacturer's name, description and part number of each component.

G. A copy of the manufacturer's literature, describing each item of equipment, plant

fittings and accessory type used throughout the installation. This literature

shall list the technical data available, together with catalogue list numbers for

replacement purposes.

H. Complete name of manufacturer, postal address, contact person telephone, telefax

and E mail shall be tabulated for ease in procurement of spare parts. Spare parts

forms (standard) shall be prepared.

I. Generally all drawings must be arranged to flood out from their position and be

entirely visible when any part of the manual is being read. They shall be printed on

linen-backed paper.

J. Each section shall be encased in a loose-leaf ring binder covered in plastic

material of an approved colour and of a type that shall be flat when open.

K. The Contractor shall include for the preparation and supply of six copies of the

above operating and maintenance instructions for each section after the Engineer

has approved all details.

L. Electronic transfer of "As Built" drawings shall be provided as required by the

Engineer.

1.25 INSTRUCTION AND TRAINING

A. The Contractor shall be responsible for the provision of suitably qualified

personnel for the instruction and supervision of the Employer's staff at Site in the

operation and routine maintenance of all mechanical equipment and associate

works.



B. The Contractor shall provide a fully working and completely documented electronic

planned preventative maintenance schedule (PPM). The PPM shall contain all the

recommendations of the individual manufacturers of the equipment installed and

recognized good practice, along with training of the Clients staff. 1.26 SPARES AND CONSUMABLES

A. Contractor shall maintain spare parts for all equipment for use during the

maintenance period as stipulated in the general conditions of the contract.

B. Contractor shall furnish a complete list of spare parts and consumables for 5

year’s operation for every item of plant and system.

C. Contractor shall provide the spare parts as listed under the clause of "Extra

Materials" in the specifications. Cost of these spare parts is deemed included with

the item where they are listed.

1.27 MOCK-UPS

A. The Contractor shall provide mechanical equipment to allow full Architectural

Mock- ups to be built as described elsewhere in the specification.

B. The contractor shall furnish mock-ups for sample pieces of manufactured ducts with

thermal insulation and finish, pipes with thermal insulation, finish and cladding

and supports.




SECTION 15060

HANGERS, SUPPORTS AND FIRE STOPPING

PART 1 GENERAL 1.1 SUMMARY

A. Sectio

n

Includes:

1. Mechanical supports and hangers.

2. Expansion slides and compensators.

3. Inserts.

4. Flashing.

5. Equipment curbs.

6. Sleeves.

7. Mechanical sleeve seals.

8. Fire stopping relating to mechanical work.

1.2 DEFINITIONS

A. Fire stopping (Through-Penetration Protection System): Sealing or stuffing

material or assembly placed in spaces between and penetrations through

building materials to arrest movement of fire, smoke, heat, and hot gases

through fire rated construction. 1.3 PERFORMANCE REQUIREMENTS

A. Fire stopping: Conform to applicable code FM UL WH for fire resistance

ratings and surface burning characteristics.

B. Fire stopping: Provide certificate of compliance from authority having jurisdiction indicating approval of materials used.

1.4 SUBMITTALS

A. Shop Drawings: Indicate system layout with location including critical

dimensions, sizes, for hanger and support locations and detail of trapeze hangers.

B. Product Data:

1. Hangers and Supports: Submit manufacturers catalog data including load capacity.

2. Fire stopping: Submit data on product characteristics, performance and limitation criteria.

C. Fire stopping Schedule: Submit schedule of opening locations and sizes,

penetrating items, and required listed design numbers to seal openings to

maintain fire resistance rating of adjacent assembly.



D. Design Data: Indicate load carrying capacity of trapeze, multiple, and riser support hangers. Submit calculations used to determine load carrying capacity of each type of support and hanger for the engineer's approval.

E. Manufacturer's Installation Instructions:

1. Hangers and Supports: Submit special procedures and assembly of components. 2. Fire stopping: Submit preparation and installation instructions.

F. Manufacturer's Certificate: Certify products meet or exceed specified requirements.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Accept materials on site in original factory packaging, labeled with

manufacturer's identification.

B. Protect from weather and construction traffic, dirt, water, chemical, and mechanical damage, by storing in original packaging.

1.6 FIELD MEASUREMENTS

A. Verify field measurements prior to fabrication.

PART 2 PRODUCTS

2.1 MECHANICAL SUPPORTS AND HANGERS

A. All installation material used for supporting and fixing mechanical piping and

ducting systems shall be of a modern type that gives tested reliable supporting

solution without the need for welding, drilling or subsequent galvanizing for

corrosion protection.

B. The mechanical supporting and hanging system shall consist of the

following components: 1. C-Channels shall be used as the main item for supporting all pipes and duct

work. C-Channels shall be constructed of rolled galvanized steel strip with

galvanization thickness of 20 microns. Contractor must submit mechanical

drawing showing all support locations combined with detailed load

calculation. Where the channel is cut, suitable end caps shall be used to

protect the cut from corrosion. C-Channels of minimum thickness of 2mm

and width of 40mm shall be used for all applications, and the height to be

selected according to load calculation. 2. C-Channel accessories as recommended by the channel manufacturer, shall

be used to assemble various channel structures as appropriate for the application. These accessories include single-part components for attaching connectors, fixing nuts with serration, angles, brackets and pipe ring saddles. All parts shall be made of galvanized steel.

3. Pipe Ring Clamps: For chilled water pipes and hot, cold domestic pipes; galvanized, pre-engineered pipe ring clamps should be used for fixing all

pipes to channel system or directly to the correct structure. The contractor



shall verify that the pipe supported weight does not exceed the

recommended maximum load of the clamp as provided by manufacturer.

The pipe rings should be of a double screw type. Medium duty pipe rings

shall be used for pipes up to 80mm diameter and heavy duty pipe rings shall

be used for sizes 100mm and above except for the fire fighting system, the vertical pipes shall be supported by heavy duty double screw pipe rings without rubber and shall be UL listed. All pipe rings used for copper pipes and hot-chilled water steel pipes should be provided with a pre-fitted rubber inlay. Rubber inlay shall be made of EPDM material inspected for sound insulation with temperature resistance range -40 to 110°C.

4. Threaded rods shall be manufactured of steel grade 4.6. Rods, nuts and flat washers shall be clean threaded and flawless galvanized conditions.

5. Concrete anchors: shall be internally threaded for fixing rods, made of galvanized zinc plated and passivated steel. Anchor shall have FM, VDS and fire resistance approval. Zinc plated and passivated steel bolt anchor with suitable diameter should be used for fixing channels into concrete. Furnish calculations to substantiate selected sizes.

6. Duct work supports: Pre-manufactured C-Channels shall be used as the main item for supporting ducts. Supports for vertical duct shall be located to coincide with the individual floor slabs subject to a maximum spacing of 4 meters.

2.2 EXPANSION SLIDES

A. Furnish thermal expansion sliding elements and anchors for hot water , chilled

water and steam pipes to prevent build-up forces at the pipe clamp and the fixing points. The glider shall provide sufficient slide way distance according to the manufacturer load limit and movement limit. Provide thermal expansion calculations for all net works with selection and installation details for the engineer's approval.

B. For pipe risers furnish special fabricated steel arms supported on slabs as cantilever

and to be welded on pipe sides to hold the pipe weight. Provide manufacturer's

details for the engineer's approval.

2.3 INSERTS

Furnish inserts with malleable iron case, galvanized steel shell and expander plug for

threaded connection with lateral adjustment, top slot for reinforcing rods, lugs for

attaching to forms; size inserts to suit threaded hanger rods. 2.4 FLASHING

A. Metal Flashing: 0.7 mm thick galvanized steel.

B. Metal Counter flashing: 0.8 mm thick galvanized steel.

C. Flexible Flashing: 1.2 mm thick sheet compatible with roofing.



D. Caps: Galvanized steel 0.8 mm minimum; 1.5 mm at fire resistant elements.

2.5 EQUIPMENT CURBS

A. Concrete curbs are to be provided as recommended by manufacturer of equipment. 2.6 SLEEVES

A. Sleeves for Pipes Through Non-fire Rated Floors: 1.2 mm thick galvanized steel.

B. Sleeves for Pipes Through Non-fire Rated Beams, Walls, Footings, and

Potentially Wet

Floors: Steel pipe or 1.2 mm thick galvanized steel. C. Sleeves for Round

Ductwork: Galvanized steel.

D. Sleeves for Rectangular Ductwork: Galvanized steel or wood.

2.7 MECHANICAL SLEEVE SEALS

A. Product Description: Modular mechanical type, consisting of interlocking

synthetic rubber links shaped to continuously fill annular space between object and

sleeve, connected with bolts and pressure plates causing rubber sealing elements to

expand when tightened, providing watertight seal and electrical insulation. 2.8 FIRE STOPPING

A. Definition: Fire stopping material or combination of materials used to retain integrity

of fire- rated construction by maintaining an effective barrier against the spread of

flame, smoke, water and hot gases through penetrations in fire rated wall and floor

assemblies. B. Performance Requirements: Provide fire stopping systems which have been

manufactured and installed to maintain performance criteria stated by manufacturer without defects, damage or failure.

C. Engage an experienced Installer who is certified, licensed, or otherwise qualified by the fire stopping manufacturer as having the necessary experience, staff, and training to install manufacturer’s products per specified requirements. A manufacturer’s willingness to sell its fire stopping products to the Contractor or to an Installer engaged by the Contractor does not in itself confer qualification on the buyer.

D. Compliance: Comply with manufacturer's product data including product technical bulletins, product catalog installation instructions and product carton instructions.

E. Application of fire stop systems:

1. Penetrations for the passage of duct, cable, cable tray, conduit, piping, electrical bus ways and raceways through fire-rated vertical barriers (walls and partitions), horizontal barriers (floor/ceiling assemblies), and vertical service shaft walls and partitions.

2. Slot gaps between edge of floor slabs and curtain walls. 3. Openings between structurally separate sections of wall or floors. 4. Gaps between the top of walls and ceilings or roof assemblies. 5. Expansion joints in walls and floors.



6. Openings and penetrations in fire-rated partitions or walls containing fire doors. 7. Openings around structural members which penetrate floors or walls.

8. Multiple electrical boxes located within the same stud cavity.

F. Fire stopping materials: The following materials are listed for guidance for the types of

fire stopping materials required for the installation. The contractor shall add to the list

at no extra charge further materials if found necessary to complete the installation or if

required by the fire authority: 1. Silicone Fire stopping Elastomeric Fire stopping: Multiple component

silicone elastomeric compound and compatible silicone sealant. 2. Foam Fire stopping Compounds: Multiple component foam compound. 3. Formulated Fire stopping Compound of Incombustible Fibers:

Formulated compound mixed with incombustible non-asbestos fibers. 4. Fiber Stuffing and Sealant Fire stopping: Composite of ceramic fiber stuffing

insulation with silicone elastomer for smoke stopping. 5. Mechanical Fire stopping Device with Fillers: Mechanical

device with incombustible fillers and silicone elastomer,

covered with sheet stainless steel jacket, joined with collars, penetration

sealed with flanged stops. 6. Intumescent Fire stopping: Intumescent putty, collars and sealant

compound which expands on exposure to surface heat gain. 7. Fire stop Pillows: Formed mineral fiber pillows. 8. Flexible joint spray. 9. Trowelable fire stop compound. 10. Cast in-place fire stop device. 11. Equivalent products listed in the U.L fire resistance directory.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify openings are ready to receive sleeves.

B. Verify openings are ready to receive fire stopping.

3.2 PREPARATION

A. Clean substrate surfaces of dirt, dust, grease, oil, loose material, or other matter

affecting bond of fire stopping material.

B. Remove incompatible materials affecting bond.

C. Obtain permission from Engineer before using powder-actuated anchors. D.

Do not drill or cut structural members.

E. Obtain permission from Engineer before drilling or cutting structural members.

F. Fire stopping Surface Preparation: Prepare surface to receive fire stop system

products in accordance with manufacturer’s instructions for surface preparation.



1. Verify penetrations are properly sized and in suitable condition for application of materials.

2. Comply with manufacturer's recommendations for temperature and humidity

conditions before, during and after installation of fire stopping. 3. Do not proceed until unsatisfactory conditions have been corrected.

3.3 INSTALLATION - INSERTS

A. Install inserts for placement in concrete forms.

B. Install inserts for suspending hangers from reinforced concrete slabs and sides of reinforced concrete beams.

C. Provide hooked rod to concrete reinforcement section for inserts carrying pipe

100 mm and larger.

D. Where concrete slabs form finished ceiling, locate inserts flush with slab surface.

E. Where inserts are omitted, drill through concrete slab from below and provide through- bolt with recessed square steel plate and nut flush with top of slab.

3.4 INSTALLATION - PIPE HANGERS AND SUPPORTS

A. Install in accordance with ASME B31.1.

B. Support horizontal piping as scheduled.

C. Install hangers with minimum 13 mm space between finished covering and adjacent work.

D. Place hangers within 300 mm of each horizontal elbow. E. Use hangers with 38

mm minimum vertical adjustment.

F. Support horizontal cast iron pipe adjacent to each hub, with 1.5 m maximum spacing between hangers.

G. Support vertical piping at every floor. Support vertical cast iron pipe at each

floor at hub.

H. Where piping is installed in parallel and at same elevation, provide multiple

pipe or trapeze hangers.

I. Support riser piping independently of connected horizontal piping.

J. Provide copper plated hangers and supports for copper piping .

K. Design hangers for pipe movement without disengagement of supported pipe.

L. Prime coat exposed steel hangers and supports. Hangers and supports located in



crawl spaces, pipe shafts, and suspended ceiling spaces are not considered exposed.

M. Provide clearance in hangers and from structure and other equipment for

installation of insulation. Refer to Section 15080. 3.5 INSTALLATION - EQUIPMENT BASES AND SUPPORTS

A. Provide housekeeping pads of concrete as detailed on drawings or a minimum

150 mm thick and shall be 100 mm above finished floor level and extending 150 mm beyond supported equipment.

B. Using templates furnished with equipment, install anchor bolts, and

accessories for mounting and anchoring equipment.

C. Construct supports of steel members or formed steel channel or steel pipe

and fittings. Brace and fasten with flanges bolted to structure.

D. Provide rigid anchors for pipes after vibration isolation components are installed.

Refer to Section 15070. 3.6 INSTALLATION - FLASHING

A. Provide flexible flashing and metal Counter flashing where piping and ductwork

penetrate weather or waterproofed walls, floors, and roofs.

B. Flash vent and soil pipes projecting 75 mm minimum above finished roof

surface with lead worked 25 mm minimum into hub, 200 mm minimum clear on

sides with 600 x 600 mm sheet size. For pipes through outside walls, turn flanges

back into wall and caulk, metal counter-flash, and seal.

C. Flash floor drains in floors with topping over finished areas with lead, 250 mm

clear on sides with minimum 910 x 910 mm sheet size. Fasten flashing to drain

clamp device.

D. Seal floor drains watertight to adjacent materials.

E. Provide acoustical lead flashing around ducts and pipes penetrating equipment

rooms for sound control.

F. Provide curbs for mechanical roof installations 350 mm minimum high above

roofing surface. Flash and counter-flash with sheet metal; seal watertight. Attach

Counter flashing mechanical equipment and lap base flashing on roof curbs.

Flatten and solder joints.

G. Adjust storm collars tight to pipe with bolts; caulk around top edge. Use storm

collars above roof jacks. Screw vertical flange section to face of curb. 3.7 INSTALLATION - SLEEVES

A. Exterior watertight entries: Seal with mechanical sleeve seals.



B. Set sleeves in position in forms. Provide reinforcing around sleeves.

C. Size sleeves large enough to allow for movement due to expansion and

contraction. Provide for continuous insulation wrapping.

D. Extend sleeves through floors 25 mm above finished floor level. Caulk sleeves.

E. Where piping or ductwork penetrates floor, ceiling, or wall, close off space

between pipe or duct and adjacent work with stuffing or fire stopping insulation

and caulk airtight. Provide close fitting metal collar or escutcheon covers at both

sides of penetration.

F. Install stainless steel escutcheons at finished surfaces. 3.8 INSTALLATION - FIRE STOPPING

A. Install material at fire rated construction perimeters and openings containing

penetrating sleeves, piping, ductwork, and other items, requiring fire stopping.

B. Apply primer where recommended by manufacturer for type of fire stopping material and substrate involved, and as required for compliance with required fire ratings.

C. Apply fire stopping material in sufficient thickness to achieve required fire and

smoke rating, to uniform density and texture.

D. Place foamed material in layers to ensure homogenous density, filling cavities and spaces. Place sealant to completely seal junctions with adjacent dissimilar materials.

E. Remove dam material after fire stopping material has cured.

F. Fire Rated Surface: 1. Seal opening at floor, wall, partition, ceiling, and roof as follows:

a. Install sleeve through opening and extending beyond minimum of 25 mm on both sides of building element.

b. Size sleeve allowing minimum of 25 mm void between sleeve and building element.

c. Pack void with backing material. d. Seal ends of sleeve with UL listed fire resistive silicone

compound to meet fire rating of structure penetrated. 2. Where cable tray, bus, cable bus, conduit, wire way, and trough,

penetrates fire rated surface, install fire stopping product in accordance with manufacturer's instructions.

G. Non-Rated Surfaces:

1. Seal opening through non-fire rated wall, partition floor, ceiling, and roof opening as follows: a. Install sleeve through opening and extending beyond minimum of 25 mm

on both sides of building element. b. Size sleeve allowing minimum of 25 mm void between sleeve

and building element. c. Install type of fire stopping material recommended by manufacturer.



PIPE

MATERIAL

PIPE

SIZE (mm)

THREADED

ROD DIA.

MAXIMUM HANGER

SPACING (m)

Galvanized Steel

Threaded

15 – 25 8mm 1.2

32 8mm 1.6

40 – 50 8mm 1.9

65– 108 10mm 2.2

125 10-12mm 2.5

150 10-12mm 2.6

2. Install escutcheons where conduit, penetrates non-fire rated surfaces in occupied spaces. Occupied spaces include rooms with finished ceilings and where penetration occurs below finished ceiling.

3. Exterior wall openings below grade: Assemble rubber links of mechanical sealing device to size of piping and tighten in place, in accordance with manufacturer's instructions.

4. Interior partitions: Seal pipe penetrations at computer rooms, telecommunication rooms data rooms. Apply sealant to both sides of penetration to completely fill annular space between sleeve and conduit.

3.9 FIELD QUALITY CONTROL

A. Inspect installed fire stopping for compliance with specifications and submitted

schedule. 3.10 CLEANING

A. Clean adjacent surfaces of fire stopping materials.

3.11 PROTECTION OF FINISHED WORK

A. Protect adjacent surfaces from damage by material installation.

3.12 SCHEDULES A.



B.

PIPE MATERIAL

PIPE SIZE

(mm)

THREADED

ROD DIA.

MAXIMUM

HANGER SPACING

(m)

Black Steel Seamless

Welded or Grooved

15 8mm 1.6

20 – 32 8mm 2.0

40 – 65 8mm 2.7

80 10mm 4.5

100 10mm 5

125 – 150 10-12mm 6

200 – 300 12-16mm 7

C.

PIPE

MATERIAL

PIPE

SIZE (mm)

THREADED

ROD DIA.

MAXIMUM HANGER

SPACING (m)

Copper

8 -12 8mm 1.0

15 - 20 8mm 1.3

25 - 40 8mm 1.7

50 8mm 2.2

65 - 80 10mm 3.3

100 10-12mm 4.0

D.

PIPE

MATERIAL

PIPE

SIZE (mm)

THREADED

ROD DIA.

MAXIMUM HANGER

SPACING (m)

Cast Iron

40 8mm 1.5

50 8mm 1.5

75 10mm 1.5

100 10mm 1.5

150 10-12mm 1.5



E.

PIPE MATERIAL

PIPE SIZE

(mm)

THREADED

ROD DIA.

MAXIMUM

HANGER SPACING

(m)

PVC, UPVC,

HDPE

40 8mm 1.5

50 8mm 1.5

75 10mm 1.5

100 10mm 1.5

150 10-12mm 2.0

END OF SECTION



SECTION 15070

MECHANICAL SOUND, VIBRATION, AND SEISMIC CONTROL PART 1 GENERAL

1.1 SUMMARY

A. Section Includes:

1. Inertia bases.

2. Vibration isolators.

3. Duct silencers.

4. Ductwork lagging.

5. Floating floor (NOT INCLUDED IN THIS CONTRACT). 1.2 PERFORMANCE REQUIREMENTS

A. All mechanical electrical equipment, piping and ductwork as noted on the

equipment schedule or in the specification shall be mounted on vibration

isolators to prevent the transmission of vibration and mechanically transmitted

sound to the building structure.

B. All piping and ductwork located in mechanical equipment rooms, and for a

minimum of 15m, whichever is greater, from any connection to vibration isolated mechanical or electrical equipment, shall be isolated from the building structure by means of noise and vibration hangers.

C. All isolators shall provide the required static deflection related to the equipment

weight or the operational speed as indicated below.

D. Provide minimum static deflection of isolators for equipment as follows: 1. Basement, Under 15 kW

a. Under 400 rpm: 30 mm b. 400 - 600 rpm: 25 mm c. 600 - 800 rpm: 12 mm d. 800 - 900 rpm: 5 mm e. 1100 - 1500 rpm: 4 mm f. Over 1500 rpm: 3 mm

2. Basement, Over 15 kW a. Under 400 rpm: 60 mm b. 400 - 600 rpm: 50 mm c. 600 - 800 rpm: 25 mm d. 800 - 900 rpm: 12 mm e. 1100 - 1500 rpm: 5 mm f. Over 1500 rpm: 4 mm

3. Upper Floors, Normal a. Under 400 rpm: 100 mm



b. 400 - 600 rpm: 90 mm

c. 600 - 800 rpm: 50 mm

d. 800 - 900 rpm: 25 mm e. 1100 - 1500 rpm: 12 mm f. Over 1500 rpm: 5 mm

4. Upper Floors, Critical a. Under 400 rpm: 120 mm

b. 400 - 600 rpm: 100 mm

c. 600 - 800 rpm: 90 mm d. 800 - 900 rpm: 50 mm e. 1100 - 1500 rpm: 25 mm f. Over 1500 rpm: 12 mm

E. Consider upper floor locations critical unless otherwise indicated.

F. Use concrete inertia bases for fans having static pressure in excess of 0.85 kPa or

motors in excess of 30 kW, and on all base mounted pumps over 7.5 kW.

G. Maintain sound level of spaces at levels not to exceed those listed below by utilizing acoustical devices.

H. Maintain rooms at following maximum sound levels, in Noise Criteria (NC) as

defined by ASHRAE Handbook. HVAC Applications 1. Accommodation Rooms: 25 (on medium speed) 2. Halls, Corridors, lobbies: 35 3. Offices: 35 4. Restaurant: 40 5. Meetings rooms: 35

1.3 SUBMITTALS

A. Shop Drawings: Indicate inertia bases and locate vibration isolators, with

static and dynamic load on each equipment and system. Indicate assembly,

materials, thickness, dimensional data, pressure losses, acoustical performance,

layout, and connection details for sound attenuation products fabricated for this

project.

B. Product Data: Submit schedule of vibration isolator type with location and load.

Submit catalog information indicating, materials, dimensional data, pressure

losses, and acoustical performance for standard sound attenuation products.

C. Design Data: Submit calculations indicating maximum room sound levels

are not exceeded. Furnish calculations to substantiate the selection of

vibration and noise isolators and sound attenuators for the engineer's approval.

Indicate spring diameters, free operating and solid height, ratio of horizontal and

vertical stiffness and other required data to meet the system requirements.

D. Test Reports: Indicate dynamic insertion loss and noise generation values of

silencers.



E. Manufacturer's Installation Instructions: Submit special procedures

and setting dimensions. Indicate installation requirements maintaining integrity

of sound isolation.

F. Manufacturer's Certificate: Certify isolators meet or exceed specified

requirements.

G. Manufacturer's Field Reports: Indicate sound isolation installation is complete and in accordance with instructions.

1.4 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing products specified in

this section with minimum three years documented experience.

B. Installer: Company specializing in performing Work of this section with minimum three years documented experience.

C. Design application of duct silencers acoustic housings seismic snubbers

under direct supervision of Professional Engineer experienced in design of this

Work. 1.5 FIELD MEASUREMENTS


PART 2 PRODUCTS

2.1 INERTIA BASES Concrete Inertia Bases: 1. Mass: Minimum of 1.5 times weight of isolated equipment. 2. Construction: Structured steel channel perimeter frame, with gusset

brackets and anchor bolts, adequately reinforced, concrete filled. 3. Connecting Point: Reinforced to connect spring isolators and snubbers to base. 4. Concrete: Reinforced 20 MPa concrete. 5. Machine shall be fixed to the base with grouted-in holding down bolts.

2.2 VIBRATION ISOLATORS

A. Open Spring Isolators:

1. Spring Isolators: a. Furnish hot dipped galvanized housings and epoxy powder coated

springs. b. Code: Color code springs for load carrying capacity.

2. Springs: Minimum horizontal stiffness equal to 75 percent vertical stiffness, with working deflection between 0.3 and 0.6 of maximum deflection and 50% overload capacity.

3. Spring Mounts: Furnish with leveling devices, minimum 6 mm thick neoprene sound pads, and zinc chromate plated hardware.



4. Sound Pads: Size for minimum deflection of 1.2 mm; meet

requirements for neoprene pad isolators.

B. Restrained Spring Isolators:

1. Spring Isolators: a. Furnish hot dipped galvanized housings and epoxy powder

coated springs. b. Code: Color code springs for load carrying capacity.

2. Springs: Minimum horizontal stiffness equal to 75 percent vertical stiffness, with working deflection between 0.3 and 0.6 of maximum deflection.

3. Spring Mounts: Furnish with leveling devices, minimum 6 mm thick neoprene

sound pads, and zinc chromate plated hardware. 4. Sound Pads: Size for minimum deflection of 1.2 mm; meet

requirements for neoprene pad isolators. 5. Restraint: Furnish welded steel housing assemblies to limit vertical

movement of the supported equipment.

C. Closed Spring Isolators: 1. Spring Isolators:

a. Furnish hot dipped galvanized housings and epoxy powder coated springs.

b. Code: Color code springs for load carrying capacity. 2. Type: Closed spring mount with top and bottom housing separated with

neoprene rubber stabilizers. 3. Springs: Minimum horizontal stiffness equal to 75 percent vertical stiffness, with working deflection between 0.3 and 0.6 of maximum deflection. 4. Housings: Incorporate neoprene isolation pad meeting requirements for

neoprene pad isolators, and neoprene side stabilizers with minimum 7 mm clearance.

D. Restrained Closed Spring Isolators:


coated springs. b. Code: Color code springs for load carrying capacity.

2. Type: Closed spring mount with top and bottom housing separated with neoprene rubber stabilizers.

3. Springs: Minimum horizontal stiffness equal to 75 percent vertical stiffness, with working deflection between 0.3 and 0.6 of maximum deflection.

4. Housings: Incorporate neoprene isolation pad meeting requirements for neoprene pad isolators, and neoprene side stabilizers with minimum 7 mm clearance and limit stops.

E. Spring Hanger:


coated springs.



b. Code: Color code springs for load carrying capacity. 2. Springs: Minimum horizontal stiffness equal to 75 percent vertical

stiffness, with working deflection between 0.3 and 0.6 of maximum deflection.

3. Housings: Incorporate neoprene isolation pad meeting requirements for neoprene pad isolators.

4. Misalignment: Capable of 20 degree hanger rod misalignment.

F. Neoprene Pad Isolators: 1. Rubber or neoprene-waffle pads. a. 30 durometer.

b. Minimum 13 mm thick. c. Maximum loading 275 kPa. d. Height of ribs: not to exceed 0.7 times width.

2. Configuration: 13 mm thick waffle pads bonded each side of 6 mm thick steel plate.

G. Rubber Mount or Hanger: Molded rubber designed for 13 mm deflection with

threaded insert.

H. Glass Fiber Pads: Neoprene jacketed pre-compressed molded glass fiber bonded

to a steel load transfer plate and formed steel bolt down bracket with anti-short

circuit neoprene grommet to prevent metal to metal contact.

I. Seismic Snubbers: 1. Type: Non-directional and double acting unit consisting of

interlocking steel members restrained by neoprene elements. 2. Neoprene Elements: Replaceable, minimum of 18 mm thick. 3. Capacity: 4 times load assigned to mount groupings at 10 mm

deflection. 4. Attachment Points and Fasteners: Capable of withstanding 3 times

rated load capacity of seismic snubber.

J. Seismic Restraint for ceiling suspended systems and equipment: 1. Furnish seismic bracing and restrains for ductwork and pipe work as

shown in the standard details. 2. Seismically support all suspended equipment above 200kg weight by seismic

springs. Type and quantity to unit load. Furnish calculations for the engineer's approval.

3. 4. Seismically restrain all suspended equipment above 200kg weight. Use

Type J aircraft Cable Restraints for all corners.

5. Type J cable seismic restraint sizes, quantities, locations, and mounting

details shall be as per ASHRAE and or SMACNA (Sheet Metal and Air

Conditioning Contractors National Association, Inc.) "Seismic Restraint

Manual Guidelines for Mechanical Systems", Second Edition



2.3 DUCT SILENCERS

A. Description: Duct section with sheet metal outer casing, sound absorbing fill

material, and inner casing of perforated sheet metal; incorporating interior

baffles of similar construction. Fabricate in accordance with SMACNA

HVAC Duct Construction Standards - Metal and Flexible.

B. Configuration: Rectangular with lined splitters with radius nose and contoured

tails.

C. Materials: 1. Outer Casing: Minimum 0.9 mm thick galvanized steel stiffened with welded

seams, 50 mm long, 2.9 mm slip joints on both ends. 2. Inner Casing and Splitters: Minimum 0.6 mm thick perforated galvanized steel. 3. Fill: Glass fiber or mineral wool of minimum 64 kg/cu m density. 4. Fill Liner: Bonded polyester film to prevent fiber migration at the

working air velocity.

D. Rating: 1. ASTM E477 Insertion Loss and Maximum Generated Noise at 20 m/sec Face

Velocity to meet space noise level criteria. 2. Static Pressure Drop at 10 m/sec Face Velocity: 0.075 kPa. 3. Air Tight Static Pressure: 2.5 kPa.

E. Performance: Achieve noise reduction as required to meet space noise level

criteria. 2.4 DUCTWORK LAGGING

A. Acoustic Insulation: 19 mm thick elastomeric, closed cell rubber. Fixing with

fire proof adhesive and mechanical fixing with self welding pins and galvanized steel washers.

2.5 FLOATING FLOOR (NOT INCLUDED IN THIS CONTRACT)

A. Proprietary floating floor system shall be used for chillers as indicated on

drawings.

B. The floating floor shall consist primarily of an isolated concrete slab 100mm

minimum thickness (2400 kg/m³) supported by sound isolated material of pre-

molded fiberglass pads. The perimeter of the floating floor shall be isolated

from adjoining walls, columns or curbs by means of perimeter isolation board

of closed cell, expanded polyethylene,

20mm thick.

C. Support media “Noise and Vibration Pads” must provide a natural frequency of

10-15Hz or lower and shall remain constant within 2Hz over the entire load



range of the floor system. Pads shall be designed to withstand a minimum

imposed load of 200 PSF in all open areas, and shall have a minimum overload

capacity of 100% in all high load areas. Pads shall be resistant to oil, water,

acids and fungus.

D. Design: Provide full calculation for the isolation-floating floor

showing loads, deflections. dimensions, material specifications and concrete

reinforcement. Calculations shall be submitted for each area where this system

is shown on drawings.

E. Carefully examine conditions at the job site before commencing work. Any surfaces not properly prepared to receive the work of this section shall be reported to the Engineer.

F. Shop drawings: full set shall be prepared for all areas and submitted for

approval prior to commencement of work. Drawings shall show the

construction of the various parts of the work. Including connections of the

isolation system components to adjacent parts of the building structure.

G. Noise and vibration pads shall be surrounded by a mat of fiberglass having

the same thickness of the pads. Pads shall be topped by a layer of plywood,

15mm thick, concrete pouring form. Plywood shall be covered by 150 micron

polyethylene sheet prior to pouring concrete. Density of pads shall suit the

equipment load and the concrete load.

H. Penetrations: piping, conduit or ductwork penetrations of the “floating floor”

shall be isolated with 20mm, closed cell expanded polyethylene as specified for

the perimeter isolation board.

I. Isolated floor drains: shall consist of two part units designed to be cast into the isolated slab and the structure slab with no rigid connection between the two members.

PART 3 EXECUTION

3.1 EXAMINATION

A. Verify equipment, ductwork and piping is installed before work in this section

is started. 3.2 INSTALLATION

A. Support duct silencers rigidly to ductwork.

B. Lag ductwork, where indicated by wrapping with insulation and

covering. Apply covering to be airtight. Do not attach covering rigidly to

ductwork.

C. Install isolation for motor driven equipment. D. Bases: 1. Set steel bases for 25 mm clearance between housekeeping pad and base. 2. Set concrete inertia bases for 50 mm clearance between housekeeping

pad and base.



E. Adjust equipment level.

F. Install spring hangers without binding.

G. On closed spring isolators, adjust so side stabilizers are clear under normal operating conditions.

H. Prior to making piping connections to equipment with operating weights

substantially different from installed weights, block up equipment with temporary shims to final height. When full load is applied, adjust isolators to load to allow shim removal.

I. Provide pairs of horizontal limit springs on fans with more than 1.5 kPa static

pressure, and on hanger supported, horizontally mounted axial fans.

J. Provide resiliently mounted equipment, piping, and ductwork with seismic

snubbers. Provide each inertia base with minimum of four seismic snubbers located close to isolators. Snub equipment designated for post disaster use to 1.5 mm maximum clearance. Provide other snubbers with clearance between 4 mm and 7 mm.

K. Support piping connections to isolated equipment resiliently to nearest

flexible pipe connector. as follows: 1. Up to 100 mm Diameter: First three points of support. 2. 125 to 200 mm Diameter: First four points of support. 3. 250 mm Diameter and Over: First six points of support. 4. Select three hangers closest to vibration source for minimum 25

mm static deflection or static deflection of isolated equipment. Select remaining isolators for minimum 25 mm static deflection or 1/2 static deflection of isolated equipment.

3.3 FIELD QUALITY CONTROL

A. Inspect isolated equipment after installation and submit report. Include static

deflections.

B. After start-up, final corrections and balancing of systems take octave

band sound measurements over full audio frequency range in areas adjacent to mechanical equipment rooms, duct and pipe shafts, and other critical locations. Provide one-third octave band measurements of artificial sound sources in areas indicated as having critical requirements. Submit complete report of test results including sound curves.

C. Furnish services of a third party testing agency to take noise measurement.

Use meters meeting requirements of ANSI S1.4.

END OF SECTION



SECTION 15075

MECHANICAL IDENTIFICATION



1. Nameplates. 2. Tags. 3. Stencils. 4. Pipe markers. 5. Ceiling tacks. 6. Labels. 7. Lockout devices.

1.2 SUBMITTALS

A. Product Data: Submit manufacturers catalog literature for each product

required.

B. Shop Drawings: Submit list of wording, symbols, letter size, and color

coding for mechanical identification and valve chart and schedule, including

valve tag number, location, function, and valve manufacturer's name and model

number.

C. Samples: Submit two tags, labels, pipe markers suitably sized for the project.

D. Manufacturer's Installation Instructions: Indicate installation instructions, special procedures, and installation.

E. Manufacturer's Certificate: Certify products meet or exceed specified

requirements. 1.3 CLOSEOUT SUBMITTALS

A. Project Record Documents: Record actual locations of tagged valves; include

valve tag numbers. 1.4 QUALITY ASSURANCE

A. Conform to ASME A13.1 for color scheme for identification of piping

systems and accessories.

B. Maintain one copy of each document on site. 1.5 FIELD MEASUREMENTS




1.6 EXTRA MATERIALS

A. Furnish six containers of spray-on adhesive.

PART 2 PRODUCTS

2.1 NAMEPLATES

A. Product Description: Laminated three-layer plastic with engraved black letters

on light contrasting background color. 2.2 TAGS

A. Plastic Tags:

1. Laminated three-layer plastic with engraved black letters on light contrasting background color. Tag size minimum 38 mm square.

B. Metal Tags:

1. Brass with stamped letters; tag size minimum 38 mm square with finished edges.

C. Information Tags:

1. Clear plastic with printed "Danger," "Caution," or "Warning" and

message; size 83 x 143 mm with grommet and self-locking nylon ties.

D. Tag Chart: Typewritten letter size list of applied tags and location in anodized

aluminum frame. 2.3 STENCILS

A. Stencils: With clean cut symbols and letters of following size:

1. Up to 51 mm Outside Diameter of Insulation or Pipe: 13 mm high letters. 2. 64-150 mm Outside Diameter of Insulation or Pipe: 25-mm high letters. 3. Over 150 mm Outside Diameter of Insulation or Pipe: 44 mm high letters. 4. Ductwork and Equipment: 44 mm high letters.

B. Stencil Paint: As specified in Section 09900, semi-gloss enamel, colors and

lettering size conforming to ASME A13.1. 2.4 PIPE MARKERS

A. Color and Lettering: Conform to ASME A13.1. B. Plastic Pipe Markers: 1. Factory fabricated, flexible, semi-rigid plastic, preformed to fit around pipe or pipe covering. Larger sizes may have maximum sheet size with spring fastener.

C. Plastic Tape Pipe Markers:



1. HVAC equipment: Yellow. 2. Fire dampers/smoke dampers: Red. 3. Plumbing valves: Green.

2.6

4.

LABELS

Heating/cooling valves: Blue.

1. Flexible, vinyl film tape with pressure sensitive adhesive backing and printed markings.

D. Plastic Underground Pipe Markers:

1. Bright colored continuously printed plastic ribbon tape, minimum 150 mm wide by 0.10 mm thick, manufactured for direct burial service.

2.5 CEILING TACKS

A. Description: Steel with 19 mm diameter color-coded head. B. Color code as

follows:

A. Description: Aluminum, size 48 x 19 mm, adhesive backed with printed identification and bar code.

2.7 LOCKOUT DEVICES A. Lockout Hasps: 1. Anodized aluminum hasp with erasable label surface; size minimum 184 x 76 mm.

B. Valve Lockout Devices:

1. Steel device preventing access to valve operator, accepting lock shackle.

PART 3 EXECUTION

3.1 PREPARATION

A. Degrease and clean surfaces to receive adhesive for identification materials.

B. Prepare surfaces in accordance with Section 09900 for stencil painting.

3.2 INSTALLATION

A. Install identifying devices after completion of coverings and painting.

B. Install plastic nameplates with corrosive-resistant mechanical fasteners, or

adhesive.

C. Install labels with sufficient adhesive for permanent adhesion and seal with clear

lacquer. For unfinished canvas covering, apply paint primer before applying labels.

D. Install tags using corrosion resistant chain. Number tags consecutively by

location.

E. Install underground plastic pipe markers 150 to 200 mm below finished



grade, directly above buried pipe.

F. Install piping identification on chilled and heating water pipes. G. Identify chiller, boiler, fan coil units air handling units, pumps, tanks,

and fans with plastic nameplates. H. Identify control panels and major control components outside panels with plastic nameplates. I. Identify valves in main and branch piping with tags. J. Identify air terminal

units with numbered tags.

K. Tag automatic controls, instruments, and relays. Key to control schematic. L. Identify piping, concealed or exposed, with plastic pipe markers. Use tags

on piping 20 mm diameter and smaller. Identify service, flow direction, and

pressure. Install in clear view and align with axis of piping. Locate

identification not to exceed 6 m on straight runs including risers and drops,

adjacent to each valve and tee, at each side of penetration of structure or

enclosure, and at each obstruction. M. Identify ductwork with plastic nameplates. Identify with air handling unit

identification number and area served. Locate identification at air handling

unit, at each side of penetration of structure or enclosure, and at each obstruction. N. Provide ceiling tacks to locate valves or dampers above T-bar type panel

ceilings. Locate in corner of panel closest to equipment.

END OF SECTION



SECTION 15175

TANKS


A. Underground water storage tank

B. System Design Criteria

C. Pressurization Units




B.S. British Standards

API American Petroleum Institute

NFPA National Fire Protection Association

1.3. SUBMITTALS

A. Copies of shop drawings for each tank. Drawings shall include all critical

dimensions and show locations of all fittings and accessories, i.e. man

ways, ladders, hold-down straps, heating coils, etc.

PART 2 - PRODUCTS 2.1. EXPANSION TANKS FOR HEATING COOLING SYSTEM

A. Open expansion tank, oil painted, galvanized steel sheet metal 1.5mm

thickness complete with float valve, cleaning door, drain pipe and valve, over

flow pipe, inlet and outlet pipe with steel angle base

2.2. UNDERGROUND WATER STORAGE TANKS - CONCRETE

A. Reinforced concrete underground water storage tank for Potable water

B. Reinforced concrete ground water storage tanks shall have height and

diameter as shown on the drawings

C. The tank shall be provided with float valves, isolating valves and foot valve

with strainer and vent pipes



D. The tank shall be provided with contacts for low level cut out of water

pumps and contacts for low and high level alarms carried to a suitable panel

preferably in the pump room or as instructed by the Engineer

E. Tanks inspection covers shall be airtight type

F. Tank shall be provided with an internal stainless steel access ladder

2.3. FUEL TANKS

A. The contractor shall furnish and install above ground cylindrical fuel oil

tanks. The tanks are be installed above ground and shall be installed on

concrete / supports and located where indicated on the drawings, tanks

shall meet the international standards requirements

B. The tanks shall be constructed of 2 mm thick black steel sheet metal and

shall be complete with necessary cover metallic gasket and include outlets

to accommodate the piping connections for 50 mm fill, 50 mm vent, 50

mm drain and supply

C. Tank shall be supplied with fuel oil level indicator to indicate the fuel

level in the tanks

D. The external surfaces of the fuel oil tanks shall receive final painting on site

E. Fuel oil supply to the generator/s shall be black steel seamless sch40

F. Fuel oil pipes connected with generator/s shall include fuel filter, safety

valves with fusible link, relief valves, automatic shut off valve in case of fire

or earthquake

G. Fuel oil storage tank to be provided with fuel oil level indicator

2.4. COLOUR CODING

A. All aboveground storage tanks except roof mounted water storage tanks

shall have the following finished colors unless otherwise indicated and

selected by the Supervising Engineer

B. Product identification for tanks shall be in Arabic and English. The Arabic

shall be above the English and the height of the Arabic lettering shall be

300mm, the English 200 mm. Black lettering shall be used on orange,

yellow, green, white, gray and aluminum. White lettering shall be used on

red, blue, black and dark green

PART 3 - EXECUTION 3.1. INSTALLATION

A. Support tanks inside building from building structure



B. Anchor tanks in accordance with manufacturer's recommendations

C. For water storage tank provide flat concrete plinths with trawled finish to

manufacturers details




SECTION 15080

MECHANICAL INSULATION



1. Mineral fiber Flexible Blanket Duct Insulation 2. Elastomeric Closed Cell Rubber 3. Insulation Finishing

1.2 SUBMITTALS

A. Product Data: Submit product description, thermal characteristics and

list of materials and thickness for each service, and location.

B. Samples: Submit two samples of representative size illustrating each

insulation type.

C. Manufacturer's Installation Instructions: Submit manufacturers published literature indicating proper installation procedures.

D. Manufacturer's Certificate: Certify products meet or exceed specified

requirements. 1.3 DELIVERY, STORAGE, AND HANDLING

A. Accept materials on site in original factory packaging, labeled with

manufacturer's identification, including product density and thickness.

B. Protect insulation from weather and construction traffic, dirt, water, chemical, and mechanical damage, by storing in original wrapping.



PART 2 PRODUCTS

2.1 MINERAL FIBER, FLEXIBLE BLANKET DUCT INSULATION

A. Insulation: Mineral Fiber Blanket Thermal Insulation for Commercial

and Industrial Applications. 1. Operating Temperatures: 121 degrees C. 2. 'K' factor: ASTM C518 (BS874), 0.035 w/m.k at 24 degrees C.

B. Vapor Retardant Jacket:



1. ASTM C921, Laminated Kraft paper with glass fiber yarn, bonded to

aluminized film. 2. Moisture vapor transmission: ASTM E96A; 0.02 perm-inches.

C. Fastening: 10mm plastic strips on maximum 300mm centers and pins for the

bottom side of ducts wider than 700mm at 300x300mm grid.

D. Vapor Retardant Lap Adhesive: Compatible with insulation, reinforced aluminum adhesive tape 50mm wide. For use at joints and edges.

E. Insulating Glue:

1. ASTM C449/C449M. To fasten duct insulation on galvanized steel ducts. 2.2 ELASTOMERIC CLOSED CELL RUBBER.

A. Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular

form: ASTM C534; Type I, Tubular form

B. Elastomeric Foam Adhesive:

1. Air dried, contact adhesive, compatible with insulation. Fire proof type. 2.3 INSULATION FINISHING

A. Nylon wrapping finished with approved color, for insulated pipes indoor and

outdoor.

B. Galvanized Steel cladding and foster paint: (for insulated pipes in plant rooms,

roof and exposed to sight) 1. Thickness 0.60 mm thick sheet. 2. Finish: Embossed. 3. Joining: Longitudinal slip joints and 50 mm laps. 4. Fittings: 0.4 mm thick die shaped fitting covers with factory attached

protective liner. 5. Metal Jacket Bands: 10 mm wide; 0.38 mm thick.

C. Galvanized Steel cladding with foster paint: for insulated ducts in roofs,

mechanical rooms and exposed to sight.

D. Foster Paint: white enamel coating 30-36 for brush application, fire resistive,

washable, and abrasion resistant for indoor and outdoor coating to be applied on

joints only for insulated ducts and pipes.

Apply with two coats on cloth wrap. First coat tack application, let dry then

apply final coat.



PART 3 EXECUTION 3.1 EXAMINATION

A. Verify piping, equipment and ductwork has been tested before applying

insulation materials. B. Verify surfaces are clean and dry, with foreign material removed.

3.2 INSTALLATION

A. Exposed Piping: Locate insulation and cover seams in least visible locations. B.

Secure insulation with adhesive, plastic strips and pins.

C. Insulated pipes conveying fluids below ambient temperature: Insulate entire

system including fittings, valves, unions, flanges, strainers, flexible connections,

pump bodies, and expansion joints.

D. For hot piping conveying fluids over 60 degrees C , insulate flanges and unions at equipment.

E. Inserts and Shields:

1. Application: Piping or Equipment 50 mm diameter or larger. 2. Shields: wood saddle between pipe hangers or pipe hanger rolls and inserts. 3. Insert location: Between support shield and piping and under finish jacket. 4. Insert configuration: Minimum 150 mm long, of thickness and contour

matching adjoining insulation; may be factory fabricated. 5. Insert material: Compression resistant insulating material suitable for planned temperature range and service.

F. Continue insulation through penetrations of building assemblies or portions of

assemblies having fire resistance rating of one hour or less. Provide intumescent

fire stopping when continuing insulation through assembly. Finish at supports,

protrusions, and interruptions. Refer to Section 07840 for penetrations of

assemblies with fire resistance rating greater than one hour.

G. Pipe Exposed in Mechanical Equipment Rooms or Finished Spaces and roofs:

Finish with galvanized jacket.

H. Exterior Applications: Provide vapor Retardant jacket. Insulate fittings, joints, and

valves with insulation of like material and thickness as adjoining pipe, and

finish with glass mesh reinforced vapor Retardant cement. Cover with

galvanized jacket with seams located at 3 or 9 o’clock position on side of

horizontal piping with overlap facing down to shed water or on bottom side of

horizontal equipment.

I. Factory Insulated Equipment: Do not insulate.



J. Exposed Equipment: Locate insulation and cover seams in least visible locations.

K. Apply insulation close to equipment by grooving, scoring, and beveling insulation. Fasten insulation to equipment with studs, pins, clips, adhesive, wires, or bands.

L. Fill joints, cracks, seams, and depressions with bedding compound to form

smooth surface. On cold equipment, use vapor Retardant cement.

M. Insulated equipment containing fluids below ambient temperature: Insulate entire

system.

N. Mineral fiber insulated equipment containing fluids below ambient temperature:

Provide vapor Retardant jackets, factory-applied or field-applied. Finish with

glass-cloth and vapor barrier adhesive.

O. For hot equipment containing fluids over 60 degrees C , insulate flanges and

unions with removable sections and jackets.

P. Mineral fiber insulated equipment containing fluids above ambient temperature: Provide standard jackets, with or without vapor Retardant, factory-applied or field-applied. Finish with glass cloth and adhesive.

Q. Finish insulation at supports, protrusions, and interruptions.

R. Equipment in Mechanical Equipment Rooms or Finished Spaces: Finish with

galvanized jacket.

S. Nameplates and ASME Stamps: Bevel and seal insulation around; do not insulate

over.

T. Equipment Requiring Access for Maintenance, Repair, or Cleaning: Install insulation for easy removal and replacement without damage.

U. Insulated ductwork conveying air below ambient temperature:

1. Provide insulation with vapor Retardant jackets. 2. Finish with tape and vapor Retardant jacket. 3. Continue insulation through walls, sleeves, hangers, and other duct

penetrations. 4. Insulate entire system including fittings, joints, flanges, fire dampers,

flexible connections, and expansion joints.

V. Insulated ductwork conveying air above ambient temperature: 1. Provide with or without standard vapor Retardant jacket. 2. Insulate fittings and joints. Where service access is required, bevel and seal

ends of insulation.

W. Ductwork Exposed in Mechanical Equipment Rooms or Finished Spaces and

roofs: Cover with cloth wrap finished with foster paint.



X. External Duct Insulation Application: 1. Secure insulation with vapor Retardant with wires and seal jacket joints

with vapor Retardant adhesive or tape to match jacket.

2. Secure insulation without vapor Retardant with staples, tape, or

wires. 3. Install without sag on underside of ductwork. Use adhesive or

mechanical fasteners where necessary to prevent sagging. Lift ductwork off trapeze hangers and insert spacers.

4. Seal vapor Retardant penetrations by mechanical fasteners with vapor Retardant adhesive.

5. Stop and point insulation around access doors and damper operators to allow operation without disturbing wrapping.

Y. Duct and Plenum Liner Application:

1. Adhere insulation with adhesive for 100 percent coverage. 2. Secure insulation with mechanical liner fasteners. SMACNA

Standards for spacing. 3. Seal and smooth joints. Seal and coat transverse joints. 4. Seal liner surface penetrations with adhesive. 5. Duct dimensions indicated are net inside dimensions required

for airflow. Increase duct size to allow for insulation thickness. 3.3 SCHEDULES

A. HVAC Systems:

1. Heating Water: Foamed rubber insulation with nylon wrapping : 19 mm thick for pipes up to 50 mm diameter. 25 mm thick, for pipes from 65 mm diameter and larger.

B. Supply Ducts, indoor: 25 mm thick fiberglass, 24 kg/cu.m.

C. Supply Ducts, outdoor: 50 mm thick fiberglass, 24 kg/cu.m.

D. Domestic water System:

1. Domestic Hot Water:

Foamed rubber insulation with nylon wrapping : 19 mm thick for pipes up to 50 mm diameter. 25 mm thick, for pipes from 65 mm diameter and larger.

END OF SECTION



SECTION 15410 PART 1 - GENERAL

PLUMBING PIPING

1.01 SCOPE OF SECTION

A. This technical Specification establishes the minimum requirements for the

equipment to be incorporated into the above ground Soil, Waste, Rainwater and

Hot and Cold water services plumbing pipework. B. It also establishes the quality of materials and workmanship to be used in the

supply and installation of the systems. 1.02 WORK INCLUDED

A. Provision of all labor, materials and the performance of all operations

necessary for the supply and installation of pipework and fittings of the above

ground Soil, Waste Rainwater and Hot and Cold water services systems as specified

herein and as detailed on the Drawings. B. Co-ordination: The Contractor shall ensure that the soil and waste systems are

fully compatible with all trades, particularly those of the Civil, Mechanical and

Electrical services, for successful installation and operation. C. Submittals: The Contractor shall submit to the Engineer for review and

approval, all calculations and drawings for the equipment proposed and associated

builders works to show that the plant as installed will meet all the specified criteria.

No works shall commence on the site until the design has received the approval of

the Engineer. 1.03 QUALITY ASSURANCE

A. Manufacturers: The Contractor shall only propose the use of materials

produced by firms who have been regularly engaged in the manufacture of

plumbing pipework systems and whose products have proved satisfactory in

similar service for not less than 10 years. B. Installer: Firms proposed for the installation of the plumbing pipework

systems shall have been regularly engaged for at least 5 years in the

installation of plants of a similar type, quality and scope as is required for this

project. 1.04 APPLICABLE CODES AND STANDARDS

A. The plumbing pipework shall comply fully with the latest relevant British and

DIN Standards in all respects.



B. The following are the most commonly used Standards associated with Cold, Hot,

Soil and Waste Systems. However, the Contractor shall ensure that all applicable

Standards are complied with, whether listed here or not.

BS: 1387 Galvanized steel medium and heavy duty.

BS: 4514 Unplasticized polyvinyl chloride UPVC soil and ventilating pipes, fittings

and accessories.

BS: 4660 Unplasticized polyvinyl chloride UPVC

underground drainpipe and fittings. BS: 5255 Plastic waste pipe

and fittings.

BS: 5481 Unplasticized polyvinyl chloride UPVC pipes and fittings for gravity

sewers.

BS: 6367 Drainage of roofs and paved areas.

BS: 6700 Design, installation, testing and maintenance of services supplying

water for domestic use within buildings..

BS: 8000 Part 13 - Above ground drainage and sanitary appliances. DIN: 8079

Chlorinated polyvinyl chloride CPVC pipes

DIN: 8061 Unplasticized polyvinyl chloride UPVC pipes

DIN: 8062 Unplasticized polyvinyl chloride UPVC pipes

DIN: 8063 Pipe joints and pipe fittings for pressure

Unplasticized PVC pipes

DIN: 4262 Pipes and fittings for subsoil drainage of trafficked areas and

underground engineering

Unplasticized PVC pipes

DIN: 1187 Unplasticized polyvinyl chloride UPVC pipes (UPVC) drainpipes;

Dimensions, requirements, testing

1.05 SUBMITTALS

A. Drawings - refer to Section 15010

B. Products - submit full manufacturer data for every item.

1.06 OPERATION AND MAINTENANCE DATA

A. Comply with Section 15010.



1.08 WARRANTY A. Provide warranty in accordance with contract conditions

PART 2- PRODUCTS

2.01 MATERIALS

Pipes And Fittings Shall Be In Accordance With The Following Schedule: -

Service Material

Soil, waste, rain water drain and vent pipes for

above ground installation

HDPE

Soil, waste, rain water drain and vent pipes for

below ground installation (Between manholes)

HDPE

Pressurized Soil and waste drainage pipes HDPE

Drain rainwater collected around the building Flexible double layer perforated HDPE

Cold and hot water pipes . GSP to BS 1387 medium duty

Cold and hot water distribution pipework

to sanitary fixtures

Cross linked polyethylene (PEX)

pipe

Liquefied Petroleum Gas pipes Copper to ASTM B88 type L or to

BS/EN 1054 class Y

Fire fighting pipes Black steel pipes seamless to ASTM

– A53 grade A schedule 40

2.02 ABOVE GROUND DRAINAGE INSTALLATIONS

A. The above ground drainage installations shall mean all pipework inside buildings and

located as follows:-

-Above floor slab

-Under tiles

-Embedded in walls

-At high level or low level exposed or concealed

-All vertical pipes (risers)

B. .The pipes and fittings shall be unplasticised polyvinyl chloride UPVC to BS

4514 and BS 5255

C. All pipes shall be cast in one piece and with or without spigot bead or gasket

positioning lugs. All pipes shall be legibly marked on the barrel. The marking shall

consist of the manufacturer's name or registered trademark by which he can be

identified.

D. Each fitting shall be plainly marked with the manufacturer's name or registered

trademark by which he can be identified.

E. Jointing of pipework and fittings shall be by the use of solvent weld sockets carried



out in accordance with the manufacturer instructions. Solvent weld cement shall be

of a type approved by the manufacturer of the pipework being jointed.

F. Additional ring seal joints shall be provided as necessary to account for

expansion and contraction.

G. The connection of pipes to all water closets shall be made by WC-connector with O-

ring adapter socket and pan seal socket. 2.03 BELOW GROUND DRAINAGE INSTALLATIONS

A. The below ground drainage installation shall mean all drainage pipe work installed

belowground slab and all external drainage pipework.

B. The pipes and fittings shall be unplasticised polyvinyl chloride UPVC.

Pipe size 110 mm. and 160 mm. shall conform to BS 4660, and size 200 mm. up to 630

mm. shall conform to BS5481.

C. Pipes and fittings shall be manufactured with polypropylene seal retaining caps.

All joints for below ground pipework shall be made by seal ring expansion joint.

D. To drain rainwater collected around the building, the contractor shall use flexible double layer polyethylene conduit, perforated and coated with geotechnical fabric pipe (perforated pipe, HDPE from outside and LDPE from inside):

The conduit's outer layer shall be made of high density polyethylene (HDPE) and the inner layer shall be made of low density polyethylene (LDPE)

The conduit shall be lined by gluing the fabric (rather than fastening it on with strings) in order to make more durable and to prevent clogging and debris entering the conduit and to improve water penetration into the conduit

Perforated pipe shall be compatible with standards DIN4262 and DIN1187

PART 3 EXECUTION

3.01 SOIL, WASTE AND RAINWATER PIPEWORK

A. WORKMANSHIP

1. Materials and workmanship shall be of best quality and executed in

accordance with the Specification, drawings and manufacturers

recommendations.

2. Where any pipe is required to be shortened it shall be cut off square and

cleanly with an approved pipe-cutting machine.

3. Where special joints or jointing materials are shown for pipes of any

materials, they shall be of an approved type and manufacture, and the joint shall

be made in accordance with the manufacturer's instructions, or as directed.

4. Responsibility shall be assumed to identify and install all necessary



expansion couplings and fire sleeves throughout the installations.

5. All plant, pipes and fittings etc shall be thoroughly cleaned of all foreign

matter before installation. Each section of the installation shall be clean and

free from any obstructions whatsoever before proceeding with the next section

of the installation.

6. Flexible joints are to be provided wherever pipes cross expansion

joints.

7. All soil, waste, vent and rainwater pipes shall be to the sizes and positions

indicated on the drawings to take the discharge from the branch waste and

vent pipes, sanitary fittings and equipment adjacent thereto.

8. On completion the whole of the work is to be handed over in a sound and

clean condition. In the event of any pipe being fractured from any cause

whatsoever after having been (to all appearances) properly installed,

responsibility shall be assumed in every instance and any such defective pipes

shall be replaced for approval.

9. All pipe work shall be erected to present a neat and orderly appearance,

arranged parallel to or at right-angles to the structural members of the

buildings, giving maximum headroom and shall not obstruct windows or

doorways. Pipework shall be erected such that there is a minimum

clearance of 75 mm to finished floor level and a minimum clearance of 25 mm

to finished wall faces.

10. Slopes of drainage system (gravity) shall be as recommended by local codes. B. The discharge pipework shall be so installed as to minimize the risk of

blockage. Access covers and/or rodding eyes are to be positioned such as to enable

maintenance equipment to be inserted into the system(s) to permit cleaning or clearing

of all sections of the system(s).

The pipework system and fittings are to be installed so that broken or defective parts can

be easily removed and replaced.

The discharge pipework shall ensure that there is no leakage of contaminated water or

foul air into any building. C. The work shall be set out and responsibility assumed for the accuracy of the same

and the position of all fittings shall be approved by the Client's representative. When

first setting to any work, consideration must be given to the work of other trades. D. Responsibility shall be assumed for leaving all unfinished works in a safe

condition during the progress of the works.

All materials and equipment are to be installed and protected in such manner as to be

adequately covered against damage and deterioration, and during the execution of the

work the open ends of all pipework shall be temporarily plugged off by means of blank

ends and compression caps respectively. E. Vent pipe roof termination

1. Discharge stacks complete with domical cages shall terminate not less than



300 mm above the roof, 900 mm above and not less than 3000 mm,

measured horizontally from any window or air conditioner.

2. Where the stack passes through floors, ceilings and roofs, the openings are to

be perfectly sealed-off by proprietary fittings. They shall terminate with

neoprene aluminum weathering slate, weathering collar; and a cowl on top of

pipe. F. All branch waste pipes to a range of fittings shall have an access provided on the pipe

in an accessible position at the end of the run. G. All pipe work shall be supported in accordance with the manufacturer

recommendations. Pipe hangers and brackets shall be in accordance with Section 15060

of this specification. H. Sleeves shall be provided where pipes pass through walls or floors. Pipe sleeves

shall be compatible with the pipes they protect; non-combustible and 1

½ times the diameter of the pipe. Void between pipe and pipe sleeve shall be packed

with mineral wool and sealed with approved mastic sealant. I. Where plastic pipes 50mm diameter and larger pass through fire compartment walls,

floors or ceiling cavity barriers they shall be fitted with approved collars having the

same fire resistance rating as the fire barrier they pass through. J. All vertical soil and waste pipes shall have access doors on each floor fitted above

the spillover level of fittings served. Where pipes are installed in ducts or built into

walls access doors shall be provided in the duct wall or wall for access to the access

door. The type and finish of the access shall be to suit the location and to the approval

of the Architect. K. Connection to sanitary fittings

All outlets shall be trapped and provided with accessible and adequate means of removal

and cleaning. The traps shall be designed to be self-cleaning all surfaces and joints are

to be smooth.

1. All traps with outlets for pipes up to and including 50 mm shall have a

minimum water seal of 75 mm.

2. Traps with outlets for pipes of over 50 mm shall have a minimum water seal

of 50 mm.

The waste pipes to the various sanitary fittings shall be of the following minimum sizes:

Wash basins 50 mm diameter

Sinks 50 mm diameter WC's 110 mm

diameter Floor drains with integral trap 80 mm diameter Floor drains with

P- trap 110 mm diameter

Floor cleanouts 110 mm diameter L. Condensate drains shall be provided from split units, and other A/C units



complete with proper P- trap and shall be piped as indicated on drawings.



M. Self syphonage tests

The contractor shall undertake tests for self-syphonage and induced syphonage in branch

discharge pipes by filling each appliance to over flowing and then discharging by

removing the plugs and discharging the W.C(s) at the upstream end of the discharge pipe.

All seals are to remain in the traps. The numbers of sanitary appliances to be

discharged for this performance test are enumerated below:

Type of

Use

Number of

appliances

of each kind on

the stack

Number of appliances to be discharged

simultaneously

WC Wash basin Kitchen sink

Domestic 1 to 9

10 to 24

1

1

1

1

1

2

Congested 1 to 4

5 to 9

10 to 13

14 to 26

27 to 39

40 to 50

1

1

2

2

3

3

1

2

2

3

4

5

N. Testing and commissioning

1. All tests requested by Local Municipality on the entire installation shall

be carried out, and all necessary appliance and equipment for this purpose shall

be supplied.

2. Provision shall be made to carry out any test requested at any time during the

progress of the works or after their completion.

3. Whilst phased testing may be carried out (which may or may not have been

witnessed) the contractor shall be required to demonstrate the water tightness,

alignment, and level and cleanliness of the whole installation seven days prior to

the installation being handed over.

4. This requirement shall be discharged by the applying a full running water

test to the whole installation as described below and by the drawing through of a

drain profile, which will be provided, to the required detail.

5. All tests shall be carried out in the presence of the Client's representative,

and a minimum of 48 hours notice shall be given of readiness to test any

section of the installation. Test Certificates shall be submitted to the person

witnessing the test for their signature of approval, to the effect that the system

satisfies the requirements of this Specification.



6. All sections of works must be pretested to satisfy that the

system will pass the required test, prior to carrying out the main test.

7. The Test Certificate shall be required to be completed for all sections of

the installation.

8. After erection and immediately prior to sealing in, all rainwater, main soil,

waste, vent and branch soil, waste pipes, shall be checked throughout for

obstructions and finally tested for soundness.

9. The above ground sanitation and rainwater pipe installation shall be

subjected to two air tests, one of 75 mm water gauge for a minimum

period of 15 minutes prior to connection of sanitary fittings and building in

of pipework, and a second air test on completion of the system with all traps

and WC's connected when the test pressure shall be 45 mm water gauge

for a minimum period of 15 minutes.

10. At start of testing, sanitation and Rainwater Pipework shall be checked for

alignment and stability; mechanical joints shall be re-torqued where

necessary.

11. Access doors shall be removed, felt washers greased and doors replaced.

12. The whole system shall be rodded through with an appropriately

sized disc type plus the allowance shall also be made for testing to the

Local Authority requirements and for carrying out separate and independent

tests if required.

13. The provision shall also be made for obtaining an acceptance test

certificate form the Local Authority on completion of the works. The test

for the Local Authority shall be allowed for as an addition to the tests

required under this specification.

3.02 DOMESTIC COLD AND HOT WATER SERVICES PIPEWORK A. Product handling

1. All products shall be delivered in manufacturer's original protective

packaging. All products shall be inspected at time of delivery for damage

and for compliance with Specifications. Any products that are found to be

damaged or not in accordance with the Specifications shall immediately

be repaired or removed from the site and replaced. Repairs shall not be

undertaken before the Engineer's review of Contractor's proposed

action.



2. All products shall be handled and stored as recommended by the

manufacturer to prevent damage and deterioration. The Contractor shall

supply handling equipment such as lifting beams, reinforced canvas slings,

protective padding, struts, cradles, etc., required to handle the products

without damaging hardware or linings and coatings.

3. Products shall be protected against damage and the ambient conditions

both during transport, site storage and immediately up to the time products

are installed. Precautions shall be taken to protect the product from

mechanical damage and the effects of sunlight and heat, until the

backfilling operations have been completed. All site storage areas shall be

shaded. B. Installation of pipework

1. Joints in buried pipework shall be kept to the absolute minimum.

Marker tapes with embedded metal strip shall be laid

150 mm above the pipework. If valves are required, they are to be in a

valve chamber with the surface box lettered to indicate what service is

below them.

2. The underground pipework shall be laid in 200 mm of sand or stone free

bedding material and wherever possible in straight lines to uniform

gradients. The clearance between the pipework and footings of the buildings

is not to be less than 200 mm. If less, the pipes shall be installed in a flexible

sleeve.

3. All pipework shall run vertically or at an inclination to the horizontal

to enable the whole system to be drained off either through the system or

through a valve discharging externally with an air gap to prevent

contamination by backflow. When the pipework is drained down, air is to

be allowed into the system to prevent failure or damage to the hot water

cylinder. A manual air inlet value shall be fitted to the high point in the

system to achieve this.

4. Where pipes are run chased into walls, floors, or exposed to view all

pipework shall be insulated.

5. All main domestic hot water pipe work shall be insulated.

6. All pipework distributed to sanitary fixtures shall run inside polyethylene

sleeves of 1.5 of pipe size

7 All pipework shall be erected to present a neat and orderly appearance,

arranged parallel to or at right-angles to the structural members of the

buildings, giving maximum headroom and shall not obstruct windows or

doorways. Pipes shall bend round piers, projections and into recesses



forming part of the structural works whether so indicated on the drawings

or not. Pipework shall be erected such that there is a minimum

clearance of 75 mm to the finished floor level and at least 25 mm to the

finished wall faces.

8. All fittings shall, as far as practicable, be the same size as the tubes and

pipes connected to them. Bushed outlets will only be accepted if the

required outlet size of a fitting is not of standard manufacturer.

Eccentric bushings and square tees shall be used where concentric

bushing and pitcher tees might cause air to be trapped in the system.

Elsewhere, square tees shall be confined to dead-leg branches of domestic

hot water supply systems and on cold-water branches to fitting or

ranges of fittings.

9 Elbows shall be used, where practicable, in preference to bends..

10 Pipework shall follow the contours of walls and shall be graded to

ensure venting and draining. The clearance between pipework (or the

insulation) and the wall and any other fixtures shall be not less than

20 mm.

11. Tubes shall be reamed after cutting and shall be free from burrs, rust

scale and other defects and shall be thoroughly cleaned before

erection. Open ends left during the progress of work shall be temporally

closed with purpose-made metal or plastic plugs or caps, or blank metal

flanges.

12. All joints between copper and steel pipes shall be made using dielectric

couplings..

13. Where pipework passes through walls, floors or ceilings, sleeves

shall be provided. Pipework passing through flooring shall be provided with

approved type floor and ceiling plates fastened securely to the pipe. The

sleeves shall be 1.5 of pipe size and to be of the same metal as the pipe.

14 All entry and exit holes to or from a building for pipework services

shall be sealed and plugged. For service conditions below 60 deg C the

sealant shall be mastic compound, Above this temperature it shall be silicon

rubber. Where the pipework enters the building through a large hole or duct,

a mild steel blanking plate not less than 6 mm thick shall be built into the

walls of the hole or duct. The service pipes shall pass through clearance

sockets welded to the plate and the space between pipe exterior and

socket interior shall be sealed and plugged.

15. Hangers for horizontal pipework shall be supported in accordance

with the requirements of Section 15060 – Hangers, Supports and Fir

Stopping.

14. Piping that is insulated shall be secured by clips that allow



sufficient space behind the back of the pipe for the pipe insulation

to be properly installed.

15. All pipework shall be installed so that the vertical distance between the

discharge point and overflow level of the receiving appliance shall not be

less than 25 mm for taps and/or fittings up to and including 20 mm and 70

mm for those over 20 mm to prevent contamination as result of backflow of

water.

C. Storage

1. All pipework shall be stored on purpose made pipe racks of welded

construction and of sufficient strength to support the entire weight of

the materials without any noticeable deformation.

The racks shall be such that all pipework is clear of the ground.

2. Pipework fittings shall be stored within a well-lit container made

compartmented racks or shelves. The fittings shall be separated

by means of their type and size and laid out in an orderly manner for ease of

identification. D. System testing

1. The Contractor shall ensure that all pipework is watertight to the

satisfaction of the Engineer and shall supply all pressure gauges, meters,

hoses, pumps and other temporary supports, equipment and manpower

necessary for carrying out pressure tests.

2. The Contractor shall, during testing, check the satisfactory operation

of each valve installed under the Contract.

3. Before filling or pressure testing is started the Contractor shall re-check

pipes and valves for cleanliness and shall re-check the operation of valves.

The open ends of the pipes shall normally be stopped off by blank flanges

or capped ends additionally secured where necessary by temporary struts

and wedges.

4. Potable water system shall be tested with water to 1.5 times the normal

system working pressure or 6 bar whichever is greater for a period of 4

hours, while uncovered but adequately anchored. The testing shall be carried

out in sections if necessary. If a section should fail the test, the Contractor

shall trace and repair all leaks and defects and retest the section before

any further pipes or section of adjacent pipework are laid.

5. The system shall be filled with potable water and all air expelled.

After the system has been completely filled, the

pressure shall be steadily and gradually increased until the test pressure has

been reached. If any loss is recorded, repairs shall be made and the test re-run.

6. Written records of every test clearly identifying the tested system

together with time of test and name of testing Engineer in tabulated format

shall be submitted for review by the Engineer upon completion of the test.



E. Flushing and disinfection

1. All visible dirt and debris shall be removed from the tank.

2. The tank and distributing pipes shall be filled with clean, potable water

and then drained until empty of all water.

3. The tank shall be filled with clean potable water and supply closed.

4. A measured quantity of sodium hypochlorite solution of a known strength

shall be added to the water in the tank to give a free residual chlorine

concentration of 50mg/L (50ppm) in the water.

5. The tank shall be left to stand for 1 hour.

6. Each draw off fitting shall be successively opened working progressively

away from the tank.

7. Each tap and draw off fitting shall be closed when the water discharged

smells of chlorine.

8. The tank shall not be allowed to become empty during this operation. If

necessary it shall be refilled and chlorinated as above.

9. The cistern and pipes shall then remain charged for a further 1- hour.

10. The tap furthest from the cistern shall be opened and the level of free residual

chlorine in the water discharged from the tap measured. If the concentration of

free residual chlorine is less than 30 mg/L (30 ppm) the disinfecting process

shall be repeated.

11. Finally, the tank and pipes shall remain charged for at least 16 hours and then

thoroughly flushed out with clean, potable water until the free residual chlorine

concentration at the taps is no greater than 21 mg/L (21 ppm).




SECTION 15411

PLUMBING VALVES

PART 1 GENERAL


A. This technical Specification establishes the type and quality of materials, and the

standard of workmanship to be used in the supply and installation of valves.

1.02 WORK INCLUDED

A. The work includes the provision of all labor; materials and the performance of all

operations in connection with the supply and installation of valves as specified herein

and where referred to on the Drawings.

B. Co-ordination: The Contractor shall be responsible for the full co-ordination of the

work of all trades.

1.03 QUALITY ASSURANCE

A. Manufacturers: Firms regularly engaged in the manufacture of valves whose products

have been in satisfactory use in similar applications for not less than 10 years.

B. Installer: Firms regularly engaged and qualified in the installation of valves with at

least 5 years successful installation experience on projects of a similar nature.

1.04 APPLICABLE CODES AND STANDARDS

A. The valves and all associated materials shall comply fully with the latest relevant

British Standards in all respects.

The following are the most commonly used and relevant British Standards associated

with valves and associated materials. However, the Contractor shall ensure that all

applicable British Standards are complied with, whether listed here or not.

BS: 21 Specification for Pipe Threads for Tubes and Fittings where

Pressure Tight Joints are made on the Threads.

BS: 4504 Circular Flanges for Pipes, Valves and Fittings (PN

designated).

BS: 5150 Specification for cast iron gate valves. BS: 5151 Cast Iron

Gate (Parallel Slide ) Valves.



BS: 5152 Cast Iron Globe and Globe Stop and Check Valves for general

purposes.

BS: 2879

Draining taps (screw down pattern).

BS: 5153

Cast Iron Check Valves for general purposes.

BS: 5154

Copper Alloy Globe, Globe Stop and Check, Check and Gate

Valves.

BS: 5155

Butterfly valves.

BS: 5156

Diaphragm Valves.

BS: 6683

Guide to Installation and Use of Valves.

1.05

SUBMITTALS





1.07 WARRANTY

A. Provide warranty in accordance with contract conditions.

PART 2 PRODUCTS

2.01 GENERAL

A. Valves, cocks, air vents and pipework specialties shall be provided where indicated on

the Drawings and at all positions necessary for the proper working, regulation, control

and maintenance of the installation with the approval for the Engineer.

B. All valves and cocks shall be suitable for the temperatures, working and test pressures

applicable to each system.

C. All valves cocks vents and specialties must be fitted in such a manner that they are

accessible for operation and maintenance.



D. All valves, cocks, vents and specialties installed for the work specified in this

Contract shall be of the manufacturer specified hereafter or equal and approved by the

Engineer. 2.02 VALVES

A Isolating Valves < 50mm shall be:-

Bronze Gate Valve to BS 5154 series ‘B’ threaded to BS 21 taper. Solid wedge

disk, non-rising stem, screwed-in bonnet, hand wheel operated. Rated PN20.

B Isolating Valves > 65m shall be:-

Cast iron Gate Valve to BS 5150 flanged BS 4504 Wedge disk, non-rising stem,

inside screw. Bronze seat rings and disk facings. Rated PN16.

C Non Return Valves < 50mm shall be:-

Bronze Non-return Valve swing type to BS 5154 series ‘B’ threaded to BS 21

taper. Renewable nitrile rubber disk, free to rotate, and hinge pin mounted.

Screwed-in cap. Integral seat. Rated PN20 limited to 90C maximum temperature.

D Non Return Valves > 65 mm shall be:-

Cast iron Non-return Valve swing type to BS 5153 flanged BS 4504 PN16.

Bronze faced disk, free to rotate, hinge pin mounted. Bolted seat ring bronze.

Rated PN16 limited to 90C maximum temperature.

E Fixed or Variable orifice double regulating valves ≤ 50mm :-

Threaded bronze or DZR body with memory stop lock, PN 20 bar.

F Variable orifice double regulating valves ≥ 65mm shall be :-

Non ferrous copper alloy body, bonnet, core and spindle, EPDM seat, PN16 bar

with memory stop lock. From the same manufacturer of ≤ 50mm sizes.

G Strainers < 50mm shall be:-

Bronze ‘Y’ type Strainer. Ends threaded to BS 21 taper. Fitted with perforated

stainless steel screens with 0.75 mm holes. Machined seats body and cap ends.

Screwed-in cap with captive washer. Rated PN20.

H Strainers > 65mm shall be:-

Cast iron ‘Y’ type Strainer. Ends flanged to BS 4504 Fitted with perforated

stainless steel screens with 0.75mm holes. Machined seats body and cap ends.

Bolted cap with captive washer. Rated PN16.



I Draining Taps < 25mm shall be:-

Bronze Angle Pattern Screw-down Draining Tap, lock shield type. Male inlet

threaded to BS 21 taper, outlet ribbed to provide integral hose connection. Washer

EP rubber. Rated PN 10.

J Draw Off Cocks < 50mm shall be:-

Bronze Gland Pattern Draw-off Cock to BS 2879 type 2, inlet threaded male to

BS 21 taper. Fitted with hose union. Bronze tapered plug. Rated generally to

PN10.

K Automatic Air Vents shall be:-

Bronze Automatic Air Vent, Vertical inlet with Bronze union threaded ½” BS21

taper female, Horizontal side outlet threaded ½” BS2779 parallel with

compression nut and sleeve to suit copper tube to BS2871. integral check valve on

outlet, EPDM disk, 316 Stainless steel lever and clip, Rated PN 10.

L Hose bibs

Hose bibs shall be bronze, with coupling union elbow replaceable hexagonal disc,

hose thread spout, vacuum breaker, chrome plated where exposed.

M Double Check Valve Assemblies.

Bronze backed in line double check valves to BS 6282 part 1 with intervening test

plug and screwed ends.

N Automatic Relief Valves

1. Pressure relief valves

Bronze body, stainless steel spring and trim with pipe type manual actuation

lever. The unit shall be pre-set and sealed at the factory.

2. Pressure and Temperature Relief Valves

Bronze body, stainless steel spring and trim on ceramic coated temperature

sensing element and pipe type manual actuation lever. Unit shall be rated for

relieving the maximum heat input to the water heater and pre-set and factory

sealed. Unit shall be labeled with manufactures name, serial no, maximum

working pressure and temperature, set pressure and temperature and relieving

capacity in watts.

PART 3 EXECUTION

3.01 STORAGE

A. All valves shall be stored within a well lit container on purpose made compartmented

racks or shelves, constructed in a similar manner to support the entire weight of

materials without noticeable deformation.

B. The valves shall be separated by means of their type and size and laid out in an orderly

manner for ease of identification.



C. Valves shall be supplied and stored with purpose made or manufactured plugs to

prevent ingress of dirt.

3.02 GENERAL INSTALLATION

A. Valves with screwed ends shall have a union installed adjacent to the valve for ease of

dismantling.

B. Where possible, valves shall be installed with the stem in the vertically upright

position. However, all valves shall be installed in a manner such that they are readily

accessible for ease of operation.

C. Sufficient clearance shall be allowed for the application of thermal insulation, valve

boxes, etc. and to ensure that full travel of the valve stem can be achieved.

3.03 ISOLATING VALVES

A. Separate isolating valves shall be provided on all pipework services to each item of

plant or equipment and on each main and sub main, except where flow measuring or

regulating valves are required and these valves can be used for isolating purposes

without affecting their measuring or regulating functions.

3.04 DRAIN VALVES

A. Drain valves shall be installed at all system low points on the dead side of isolating

valves and on all items of plant to facilitate emptying down and removal.

B. Line sized drain valves shall be installed at the end of each pipework run and at the

base of each pipework riser to enable the system to be adequately flushed.

3.05 AIR VENTING DEVICES

A. Air venting devices shall be installed at all system high points.

B. Automatic air eliminators shall be complete with copper relief pipework, taken to

within 1.5 m of the floor level and extended to a position where any discharge will not

damage building fabrics, decorations or the like.




SECTION 15430

PLUMBING SPECIALTIES

PART 1 GENERAL


A. This technical Specification establishes the type and quality of materials, and the

standard of workmanship to be used in the supply and installation of Plumbing

Specialties.

1.02 WORK INCLUDED

A. The work includes the provision of all labor; materials and the performance of all

operations in connection with the supply and installation of Plumbing Specialties as

specified herein and where referred to on the Drawings.

B. Co-ordination: The Contractor shall be responsible for the full co-ordination of the

work of all trades.


A. Manufacturers: Firms regularly engaged in the manufacturer of piping specialties

whose products have been in satisfactory use for a similar application for not less than

10 years.

B. Installer: Firms regularly engaged and qualified in the installation of Plumbing

Specialties with at least 5 years successful installation experience on projects of a

similar nature.


A. The Plumbing Specialties and all associated materials shall comply fully with the

latest relevant British Standards in all respects.

1.05 SUBMITTALS



C. Provide samples of each item where requested by the Engineer.





1.07 WARRANTY


PART 2 PRODUCTS

2.01 TWIN (DUPLEX) SOFTENER (NOT INCLUDED IN THIS CONTRACT)

The water softener shall be of fully automatic twin type consists of a twin softener

with a common brine tank designed for 8 bar working pressure.

The twin water softener shall be complete packaged unit factory assembled skid

mounted type and fully pre-piped and wired systems.

The softener tank shall be constructed of fiberglass.

The pressure drop of the water softener shall not exceed 1 bar.

The brink tank shall be of polyethylene construction with dust tight cover, and shall be

supplied with the required quantity and quality of salt brine as recommended by the

manufacturer.

Water softener shall be equipped from the factory with automatic control panel, and

shall incorporate the following features:-

1. Automatic back wash flow controller

2. Cycle controller and flow control

3. Multi-port valve diaphragm type

4. Brine injector

5. Automatic electronic batching type water meter

6. Alternator control to maintain one unit on standby or regeneration, and to send

signals to operate the pumps to backwash softeners automatically.

7. Automatic timer for alternate generation should hardness controller is set off

Water softener shall be provided with antivacuum valves, three isolating valves, two

double check valves and all other accessories as recommended by the manufacturer.

2.02 WATER COOLER (NOT INCLUDED IN THIS CONTRACT)

Each electric water cooler shall be of refrigerated, self-contained, floor-mounted, of

capacity of 20 liters per hour from 27.0deg C inlet temperature to 7.0 deg C drinking

water in room ambient temperature 32 C.

The cooler shall be provided with replaceable 20 liter capacity water vessel.

Condensing unit shall be hermetically sealed and lubricated for life. Cooling tank shall

be of brass, tinned, and have a minimum working pressure of 10 bar. Water cooler

shall have plastic encasement.

The water cooler shall be protected during the construction and debris or other

construction dirt shall not be allowed in the cooler. Excess pipe joint compound shall

be wiped off as soon as installation is complete. Any chrome trim with wrench marks

shall be removed and new trim installed.



The water cooler shall be cleaned and all construction dirt removed at the completion

of the project.

2.03 PIPE SLEEVES

A. Pipework sleeves shall be compatible with the pipes they protect and non-

combustible.

B. The inside diameter of sleeves shall be such as to allow an 8 mm minimum gap

between the finished surface of an insulated pipe and the internal surface of the sleeve.

The length of the sleeve shall be limited to prevent the sleeve protruding beyond the

finished building surface. Void between pipe and pipe sleeve shall be packed with

mineral wool and sealed at both ends with approved mastic sealant.

2.04 FLOOR, CEILING AND WALL COVER PLATES

A. Floor, ceiling and wall plates shall be plastic and selected to suit the pipework size

and material with which they are to be used.

2.05 PIPE CLEANOUTS

A. Shall be the same size as the pipe except that cleanout plugs larger than 100 mm will

not be required. Cleanouts in connection with other pipe, where indicated, shall be T-

pattern, 90-degree branch drainage fittings with cast-brass screw plugs of the same

size as the pipe up to and including 100 mm. Cleanout tee branches with screw plug

shall be installed at the foot of soil and waste stacks, at the foot of interior

downspouts, on each connection to building storm drain where interior downspouts

are indicated, and on each building drain outside the building. Cleanout tee branches

may be omitted on stacks in single story buildings with slab-on-grade construction or

where less than 450 mm of crawl space is provided under the floor. Cleanouts on pipe

concealed in partitions shall be provided with chromium-plated bronze, nickel bronze,

nickel brass or stainless steel flush type access cover plates. Round access covers

shall be provided and secured to plugs with securing screw. Square access covers

may be provided with matching frames, anchoring lugs, and cover screws. Cleanouts

in finished walls shall have access covers and frames installed flush with the finished

wall. Covers in finished walls shall be of a type approved by the Architect.

2.06 FLASHINGS

A sheet-lead flashing shield shall be provided for drains and pipe sleeves with integral

clamping devices that penetrate a membrane. Flashing shield shall be made from

sheet lead not lighter than 20 kg/m², and extend not less than 200 mm from the drain

or sleeve in all direction. Flashing shall be inserted into the clamping device and

made watertight. Lead flashing shields, and roof flanges of lead or copper flashing

with integral flange, shall be set over membrane in a solid coat of a bituminous

cement and strip-flashed as specified by the manufacturer. Pipes passing through

pitched roofs shall be flashed using lead or copper flashing with an adjustable integral

flange of adequate size to extend not less than 200 mm from the pipe in all directions

and lapped into the roofing to provide a watertight seal.



2.07 FLOOR DRAINS

A. Floor drain type FD, shall be 100 mm dia. trapped UPVC gully with integral cleanout.

The floor drain shall have three blank inlets of 50 mm dia (2") and one outlet of 50

mm dia (2"). The strainer shall be 100 mm dia of UPVC. Additional stainless steel

cover shall be provided.

B. Floor drain type FT shall consist of HDPE P-trap of 100 mm dia, connecting piece,

stainless steel strainer of 150 x 150 mm size.

2.08 ROOF DRAINS

A. P.P. body with bottom or angled outlets as required. Outlet size to suit connected

pipework.

B. Domed, grating with securing bolts. 2.09 FLOOR CLEANOUT

A. HDPE body with bottom outlet. Outlet size to suit connected pipework with

maximum diameter 100mm and eccentric reducer to connect to pipework where larger

than 100mm diameter. 150 x 150mm stainless steel solid top. PART 3 EXECUTION

3.01 All floor drains and floor cleanouts shall be installed square to the building and

surrounding finishes. The Contractor shall ensure that floor drains are co-ordinated

with the tiling layout.




SECTION 15440

PLUMBING FIXTURES

PART 1 GENERAL


A. This technical Specification establishes the quality of materials and workmanship to be

used in the supply and installation of plumbing fixtures. 1.02 WORK INCLUDED

A. Provision of all labor, materials and the performance of all operations in connection

with the supply and installation of plumbing fixtures as specified herein and shown on

the drawings.

B. Co-ordination: The Contractor shall be responsible for proper co-ordination of the work

of all trades.

C. Note, for actual specification of type of appliances in toilet areas refer to schedules.


A. Manufacturers: Firms regularly engaged in the manufacture of plumbing equipment and

fittings whose products have been in satisfactory use in similar service for not less than

10 years.

B. Installer: Firms regularly engaged in the installation of plumbing works of a similar

quality and scope as this project for at least 5 years.


A. The plumbing fixtures shall comply fully with the latest relevant British Standards or

DIN standards in all respects.

B. The following are the most commonly used British Standards associated with plumbing

fixtures. However the contractor shall ensure that all applicable British Standards are

complied with, whether listed here or not.

BS 1224 Electroplated coatings of nickel and chromium. BS 1254 WC seats

(plastics)

BS 1329 Metal hand rinse basins

BS 3402 Quality of vitreous china sanitary appliances

BS 3457 Materials for water tap and stop valve seat washers



BS 5388 Spray taps

BS 5503 WC pans with horizontal outlets

BS 5506 Wash basins

BS 5572 Sanitary pipework

BS 5627 Plastic connectors for use with horizontal vitreous china WC pans. BS

5779 Spray mixing taps

1.05 SUBMITTALS



C. Provide samples of products where requested by Engineer.

1.06 OPERATION MAINTENANCE DATA


1.07 WARRANTY


1.08 EXTRA MATERIALS


PART 2 PRODUCTS

2.01 GENERAL

A. All units and assemblies of sanitary ware shall be as shown and detailed on the

Mechanical and Architectural drawings, listed in schedules and as listed below.

B. Unless approved or stated otherwise all sanitary fixtures shall be from one manufacturer.

C. Each plumbing fixture shall be supplied and installed complete with all necessary

fittings for operational and maintenance requirements. All fittings exposed to view (i.e.

not concealed in chase, void, duct or buried in building structure) shall be heavily

chrome plated unless otherwise indicated in the specification schedules or on the

drawings.

2.02 WATER CLOSET

White vitreous china, Wall mounted, 600 mm depth x 360 mm width complete with the

following trim and accessories:



A. Solid plastic seat with cover and rubber washers and plastic screws and nuts.

B. 6 liter adjustable concealed flush cistern with stop valve, dual push button plate, chrome

plated.

C. WC plastic outlet connector

D. WC bowl P-trap

2.03 WASH BASIN (Semi Pedestal)

White vitreous china, 500x450mm, with one top hole and overflow, complete with the

following trim and accessories:

A. Single lever mixer with ceramic cartridge, mousseur variable adjustable volume and

temperature limiter, chrome plated.

B. Pop-up waste fitting

C. PVC trap 32mmdia.

D. Two angle valves with escutcheon and copper tube flexible connections. E. Wall

brackets.

2.04 WASH BASIN (Counter Top - Insert Type)

White vitreous china, 500x370mm, oval shape, without top hole, with overflow, complete

with the following trim and accessories:

A. Chrome plated three hole basin mixer, low spout with mousseur 15mm – 90 degree, and

Y piston handles.

B. Pop-up waste fitting

C. PVC trap 32mmdia.

D. Two angle valves with escutcheon and pressure proof flexible connection hoses.

2.05 SINK

The sink shall be made of 1.2mm stainless steel and of overall dimensions as shown on

architectural drawings. The sink shall be complete with the following trim and

accessories:

A. Single lever sink mixer 15mm dia deck mounted . B. Plastic bottle trap 40mm dia.

C. Two angle valves with escutcheon and copper tube flexible connections.



2.12 SHOWER TRAY ACCESSORIES

A. Single leaver shower mixer 15mm chrome plated, wall mounted.

B. Shower set chrome plated, consisting of shower bar, 600mm, twist free dual pattern hand

shower and shower hose 1.5m. 2.13 SANITARY ACCESSORIES

All Sanitary accessories shall be as shown on the Architectural drawings.

PART 3 EXECUTION

3.01 STORAGE

A. All plumbing fixtures shall be stored in their original containers in a secure enclosed

store. Vitreous chinaware shall be stored out of direct sunlight. Accessories (Taps,

mixers, etc.) shall be stored in boxes or wrappings to prevent the ingress of dust to

machined surfaces. All storage areas shall have adequate artificial lighting to allow for

inspection of the equipment by the Engineer.

3.02 FIXINGS

A. All fixings (Screens, Bolts etc.) shall be as supplied and/or recommended by the

fitting/fixture manufacturer. The fixings shall be entirely suitable for the medium they

are fixing into and shall be chosen to prevent any electrolytic action between any of the

installation elements. All fixings exposed to view shall be stainless steel or where only

the heads are exposed shall have caps of the same colours as the item they are fixing.

3.03 INSTALLATION OF FIXTURES

A. All preparation work (provision of holes, pipes etc.) shall be carried out in strict

accordance with the fixture manufacturers requirements and shall be arranged such that

pipe fittings, offsets & connections are kept to a minimum. All plumbing fixtures shall



be securely fixed to the structure or their support system and shall be plumb & level. The

fixtures & their plumbing connections shall be arranged to ensure the connections are not

subject to any strain or load from the fixtures.

B. All fixtures shall be sealed to adjacent walls or other surface with white silicon sealant.

3.04 INSTALLATION OF FITTINGS

A. All accessories shall be installed true & straight or where curved, shall follow the

manufacturer recommendations to produce a smooth, fair & continuous radius. Any

accessories exhibiting `tool working' or surface finish damage shall be replaced. When

positioning fixtures and accessories the contractor shall ensure that all items are central, or

where in a range, consistent and symmetrical about architectural finishes as indicated on the

Architectural drawings.

B. Where accessories are concealed the contractor shall ensure that they are accessible for

maintenance without affecting the structure or finishes.

3.05 PROTECTION

A. The Contractor shall take all measures necessary to protect fixtures and accessories

during construction. New equivalent units shall replace any damaged fixtures and

accessories. Repairing of damaged units shall not be accepted.

B. All fixtures and accessories shall be finally cleaned and put into working order upon

completion of construction. The Contractor shall be fully responsible for maintaining these

items until the facility is finally handed over.

3.06 TOOLS

A. The contractor shall supply any special wrenches or other devices necessary for

servicing and maintaining the fixtures and accessories.




SECTION 15451

WATER HEATERS

PART 1 GENERAL


A. This technical Specification establishes the quality of materials and workmanship to be

used in the supply and installation of water heaters.

1.02 WORK INCLUDED

A. The work includes the provision of all labor, materials and the performance of all

operations in connection with the installation of the water heaters as specified herein and

shown on the drawings.

B. The work includes testing of the water heaters.

C. Coordination: The Contractor shall be responsible for full coordination of the work of all

trades.


A. Manufacturers: Firms regularly engaged in the manufacture of water heaters and ancillary

equipment and fittings whose products have been in satisfactory use in similar service for

not less than 10 years.

B. Installer: Firms regularly engaged in the installation of plumbing works of a similar

quality and scope as this project for at least 5 years.


A. The water heaters, and associated fittings and accessories shall comply fully with the

latest relevant British Standards or DIN standards in all respects.

1.05 SUBMITTALS


B. Products - submit full manufacturers data for every item.

1.06 OPERATION MAINTENANCE DATA


1.07 WARRANTY




PART 2 PRODUCTS

2.01 CALORIFIERS (NOT INCLUDED)

A. Calorifiers shall be high output, vertical, storage type with two number in-built

water/water heat exchangers, one for boiler heating system and the other for solar heating

system.

B. Calorifier shall be designed and manufactured for a working pressure of 10 bars.

C. Calorifier shall be provided with approved thermal insulation 75mm minimum

thickness protected by galvanized mild steel casing, gauge 20 finished in gloss

enamel.

D. The following fittings to be supplied as a minimum:-

1. Temperature/pressure relief valve.

2. Rigid stem dial thermometer.

3. Water pressure gauge.

4. Isolating valves on primary and secondary piping.

5. Drain cock.

6. Check valve on cold water make-up.

E. All screwed connections shall be to BS 21.

F. All flanged connections shall be to BS 4504. 2.02 HOT WATER RETURN

A. Hot water return pumps for hot water systems shall be constructed so that all parts in

contact with the water are in stainless steel or bronze and shall be capable of circulating

the volume and head indicated on the Drawings. Refer to Section 15453 – Plumbing

Pumps.

PART 3 EXECUTION

3.01 PIPEWORK CONNECTIONS

A. All pipework connections to each water heater shall have a union disconnection point

between the heater and it's stop valve.

B. All drain points, vent and safety valve discharge pipes shall be extended to discharge over

a tundish which shall be piped to the nearest floor drain.

C. The Contractor shall ensure that all the pipe and electrical connections to each water



heater are easily accessible for maintenance and that the heater can be removed and

replaced with the minimum of disturbance to the system.

3.02 INSPECTION, TESTING AND STERILISATION

A. All pipework shall be visibly examined and tested before being concealed or built into the

structure.

1. All pipework and water heaters are to be pressure tested to twice the working head

whichever is the greater, without loss of pressure for 2 hours.

2. On, satisfactory completion, the system shall be flushed out and refilled with

chlorinated water at a chlorine concentration of 50 mg/l free chlorine for 24 hours.

The system is to be washed-out prior to acceptance until the free chlorine at the

outlets is no greater than that present in the water mains.

3. The above tests are to be witnessed by representatives of the Engineer and

Contractor who will sign that the tests have been fully complied with.




SECTION 15453

PLUMBING PUMPS

PART 1 GENERAL


A. This technical Specification establishes the type and quality of materials and the standard

of workmanship to be used in the supply and installation of Pumps.

1.02 WORK INCLUDED

A. The work includes the provision of all labor, materials and the performance of all

operations in connection with the supply and installation of Pumps as specified herein

and where referred to on the Drawings and Schedules.

B. Coordination: The Contractor shall be responsible for the full coordination of the work

of all trades.


A. Manufacturers: Firms regularly engaged in the manufacturer of Pumps whose products

have been in satisfactory use for a similar application for not less than 10 years.

B. Installer: Firms regularly engaged and qualified in the installation of Pumps with at least

5 years successful installation experience on projects of a similar nature. 1.04 APPLICABLE CODES AND STANDARDS

The Pumps, and all associated materials and workmanship shall comply fully with the

latest relevant British Standards and ISO Standards in all respects. 1.05 SUBMITTALS

A. Drawings refer to 15010

B. Calculations: Pump Head calculations shall be submitted for approval based on the

Contractors working drawings and pipeline equipment to be installed.

C. Products: Full certified manufacturer performance data and construction details.


A. Comply with 15010



1.07 WARRANTY


1.08 EXTRA MATERIALS

A. 1 year supply of packing materials and lubricants.

PART 2 PRODUCTS

2.01 PACKAGED BOOSTER PUMPSET

(FOR COLD, HOT DOMESTIC WATER AND FIRE FIGHTING PURPOSES)

The booster pump set shall be completely automatic, factory assembled skid mounted

unit.

Pump set shall include the following features:-

1. Vertical multi-stage pumps with high efficiency motors and drives, quantities as

shown on drawings for each set.

2. Epoxy painted steel frame.

4. Copper or stainless steel suction and delivery manifolds with flanged connections.

5. Copper, butterfly isolating valves and flexible connections on suction and delivery

for each pump.

6. Check valves on delivery for each pump.

7. Strainer on suction for each pump.

8. Pressure gauge at discharge manifold, transducer pressure and pressure relief

valve.

9. Control panel.

10. Pressure vessel with replaceable membrane on discharge main fold.

The pumps impellers, guide vanes, shafts and outer sleeves shall be stainless steel.

The pump motor shall be squirrel cage induction type and rated for continuous operation

at ambient temperature not less than 50°C.

The motors shall be totally enclosed fan cooled type with insulation class (F) and IP54

protection and rated for 400 volt, 3-phase and 50 cycle, 2900 rpm.



The control panel shall be constructed of 1.5 mm thickness sheet steel and IP54

protection.

The control panel shall include the following features:-

1. Door interlocked main fuse switch

2. Contactors, overload thermal protection

3. Transformer 230/400/110

4. Ammeter

5. Hour meter for each pump

6. Push button start/stop for each pump with indicating lamps

7. Selecting switch hand/off/auto

8. Micro processor controller for sequence operation of the pumps due to the

demand, and pressure loss in the system including automatic changeo ver of

starting pump.

9. Automatic shutdown device for dry running protection

10. Separate visible alarms and a common audible alarm for:

- Power failure

- Phase failure

- Low water level in the water supply tank. 2.02 HOT WATER RETURN CIRCULATING PUMP

The pump shall be inline close coupled single suction centrifugal type. The pump shall

have suction and discharge flanges of the same diameter and on the same canter line.

The pump motor shall be of squirrel cage induction type rated for continuous operation at

ambient temperature not less than 50°C.

The motor shall be totally enclosed fan cooled type with insulation class F and IP54

protection.

The impeller and shaft construction shall be of stainless steel and shall have a pressure

rating not less than 10 bar.

Pipe connections including fittings, valves, instrumentations etc. shall be as shown on the

drawings.



2.03 WET PIT SUBMERSIBLE PUMPS

Submersible pumps shall be of the single stage centrifugal type. The pump shall have cast

iron body, stainless steel shaft and stainless steel impeller. The squirrel cage motor shall

be suitable for the building electrical supply and submerged operation. The type of starter

for motor shall be star delta for more than 5 kw motors.

The motors shall be explosion proof for soil applications.

Each set of pumps consisted of two number for duplex type and three number for triplex

type macerating pumps (submersible type). Pumps shall alter in operation sequentially.

Standby pumps shall operate by higher level switches.

All studs, bolts, nuts, screws and washers shall be of stainless steel. Each set of pumps

shall be complete with adjustable level controller, control panel, non-return valve in each

discharge line and lifting handle and chain.

The control panel shall be complete with the following:-

- Normal housing

- Start/stop buttons

- Individual pump run lights

- Individual pump stoplights

- Individual pump trip lights

- Supply on lights

- Minimum run timers

- Hand auto/On/Off switch

- Volt free "fault" contact

The control panel shall incorporate thermal overload protection with automatic

reset provision.

The submersible pumps shall be located within the wet section in the pumping

chamber, complete with guide rails for ease of removal for maintenance / repair.

The sump shall be provided with level controls for operation of the pump units as

well as at very high and very low level alarms indication.

The sump shall be provided with access covers, step cast iron and sump vents.

Local isolators shall be located adjacent to the sump for isolation of units during

maintenance.

Pump isolating valves and test points shall be added to each set of pumps.

Guide rail with foot coupling shall be used for each set of pumps for more than

1200mm height.



PART 3 EXECUTION

3.01 INSTALLATION

A. Carry out static checks on electrical wiring settings of all control and safety devices

to ensure conditions are safe prior to start up and running.

B. Align and shim level units on prepared bases. C. Fix all units to bases.

D. Ensure adequate space is available around the units to allow inspection and

maintenance of all components.

3.02 INSTALLATION INSPECTIONS

A. Pre-installation Inspection:

1. Examine the areas and conditions under which the boosting units are to

be installed and correct any unsatisfactory conditions detrimental to the proper

and timely completion of the work. Do not proceed with the work until

unsatisfactory conditions have been corrected in a manner suitable to the

Owner.

B. Post Installation Check:

1. Provide the services of an experienced component and authorized

representative of manufacturer or supplier of the equipment to visit site to

inspect, check, adjust if necessary and approve installation of all booster units.

C. Carry out necessary testing to ensure installations are in working order and acceptable

to owner.

D. Ensure that equipment supplier’s representative is present when equipment is placed

in operation.

3.03 TESTING AND COMMISSIONING

A. COMMISSIONING

1. Carry out status checks on electrical wiring; settings of all control and

safety devices to ensure conditions are safe prior to start up and running.

2. Operate equipment to ensure all control temperature pressure and safety

devices function as required and log settings of all control and safety

devices for tabulation and inclusion in submittal document required in

accordance with this specification. The equipment shall be left in safe and

proper working order for “Post Installation Check”.




SECTION 15530

FIRE FIGHTING SYSTEM


A. The work shall be designed, erected and commissioned by specialist Fire Protection

Engineers and Contractors, conversant with modern conception of First Aid fire

protection effective and dependable in an emergency; the requirements of the local

authorities on fire prevention shall be incorporated. The tendered shall obtain the

necessary approval to the system design and working drawings and the required

acceptance certificates, if so required, under local rules, from such authorities

B. The system proposed is purely an auxiliary protection system with a static fire

reserve, fire pumps, and hose reels facilities at strategic locations in the building

as indicated

C. The Contractor shall furnish all labor, materials equipment, appurtenances, tools,

services all temporary work to provide and install the system comprising:

i. Hose reel with cabinets

ii. Package fire fighting pump set

iii. Test line with flow meter to test the pumps

iv. Piping and valves for wet risers network

v. Portable fire extinguishers

vi. All builders' works as required

vii. Painting

viii. Installing, testing and commissioning

1.2. GENERAL REQUIREMENTS

A. Piping shall be pitched to permit complete draining of the system

B. Fire reserve shall not be used in any way to provide water for other purposes.

It shall be sufficient for minimum of 1 – hour continuous operation of fire pump

at full load

C. All valves shall be readily accessible and risers shall be securely supported at

each floor

D. All valves shall be located where readily accessible, secured from use of



unauthorized personnel

E. No item shall be installed delaying any of the existing Local Fire Department

regulations. In all cases, however, installation shall comply with NFPA

1.3. BUILDERS' WORK

A. All Builder's work in connection with supports, brackets, Clamps, walkways,

closing of shafts, pump foundations, anchors, concrete bedding isolation of anti-

vibration pads as necessary, all mechanical and electrical supports, electrical

control panel, pressure switches, storage batteries shall be carried out to the entire

satisfaction of the engineer

B. Cutting openings, constructing fire hose and extinguisher cabinets with frames of

appropriate materials and size, chases and making good shall be carried out to the

entire satisfaction of the engineer

1.4. PAINTING

A. All steelworks in connection with supports for pipes and equipment exposed to

the elements shall be painted with two coats of an approved rust preventative

paint

B. All exposed surfaces or equipment, machinery, motors, pipe work, hangers,

brackets, valves, etc., shall be painted with two undercoats and two finishing coats

of enamel paint to approved color

1.5. TESTS

A. Fire line piping shall be tested at 200 psi (1,380 kPa) hydrostatic pressure. Pressure

test shall be maintained for two hours without any perceptible drop in pressure

B. Test shall be performed in the presence of, and to the satisfaction of the Engineer

C. The Engineer or his appointed Agent will require to witness the work tests of the

pumping station when completed as packaged unit

D. The testing shall be carried out prior to leaving the manufacturer's works and

shall include as a minimum hydrostatic, mechanical, electrical and functional tests

to determine compliance with the Specification requirements

PART 2 - SYSTEM COMPONENTS 2.1. PIPING SYSTEM

A. Pipes shall be seamless black steel sch40

2.2. FIRE FIGHTING CABINET



A. Fire Hose Cabinet (FHC)

i. Cabinet shall be made of hang gauge steel sheet (1.5mm) painted from

inside and outside with Electro static powder paint with full recessed

door handle. The color of the cabinet subject to the engineer’s approval

ii. Swing type for wet riser 25mm dia, braided red rubber hoses

according to BS3169 of 30 meter length with necessary lock shield

valve diameter 25mm at inlet, fog and spray nozzle of 5mm outlet and

with integrated cut off valve shall be provided. The varying pattern and

shut off feature of the nozzle shall be such as to prevent possibility of

heavy water damage. The flow of water shall be quickly changed from

straight stream to fog to shut off with a flick of a wrist

iii. The nozzle shall be cast in gun metal or brass, machined inside and

outside and chromium plated, with nylon lever operated jet / spray and

nozzle should at all times be left in the open position

iv. The manual reels feature flexible water inlets shall have separate wall

mounting brackets for easy installation

v. The hose reels shall be of the automatic recess swinging type,

swinging through 270 degrees. The contractor shall order with hinges

left or right, depending on locations

2.3. PORTABLE FIRE EXIINGUISHES

A. It shall be UL listed and FM approved

B. Supply and install wherever shown on the drawings portable fire extinguishers of

the capacities and ratings indicated on the drawings

C. Each unit shall be complete with a frame for hanging, hose, discharge valve and

pressure gauge

D. Extinguisher types:

i. Carbon dioxide self-expelling type capacity as shown on drawings. Fire

extinguisher for use in all flammable liquid services and electrical

hazard spaces. Body shall be of red enamel galvanized steel body,

flexible hose and horn discharge, squeeze lever, carrying handle,

pressure gauge and mounting brackets. Extinguisher of these type is

suitable for indoor use

ii. Automatic BCF self extinguishers (ceiling mounted) should be at a

maximum distance 1.8m above burner portable fire extinguishers

suitable for use in mechanical room. Body shall be of red enamel

galvanized steel body, and mounting brackets

iii. Dry Powder, self – expelling type capacity as shown on drawings.



Extinguishes for use in offices, corridors, hazard spaces. Body shall be of

red enamel galvanized steel body, flexible hose and horn discharge,

squeeze lever, carrying handle, pressure gauge and mounting brackets.

Extinguishers of these types is suitable for indoor use

E. All extinguishers shall be of the approved type by fire brigade authorities

2.4. SIAMESE CONNECTION ASSEMBLY

A. Siamese connection assembly shall be installed for the use of Fire Brigade, as

shown on the Drawings

B. The Siamese connection assembly shall be gunmetal with two inlets. Each inlet

shall consist of a Ф65 mm instantaneous male coupling and a non-return valve and

protected with a cap secured by a suitable length of chain

C. The coupling shall conform to B.S. 336

D. The Siamese connection assembly shall have Ф100 mm flanged outlet for

attachment to the dry riser or wet main

E. The Siamese connection assembly shall be finished with red colour paint, and

enclosed inside stainless flush mounted box with a labelled wired glass door

F. The Siamese connection assembly shall be located 1000 mm. above ground level

2.5. PEDESTAL FIRE HYDRANT

A. Pedestal fire hydrant shall be constructed of cast iron castings to BS. 1452 complete

with Ф100 mm flange inlet and two 65 mm dia. valves with instantaneous outlets to

BS.336 and with brass male couplings protected with cap secured by a suitable

length of chain

B. The fire hydrant shall be sound construction and hydraulically tested to a pressure

of 20.7 bar before being connected to the fire fighting network

C. The fire hydrant shall be installed about 760 mm above ground level and finished

with red colour paint

D. The fire hydrant shall be provided with an isolating valve installed underground

complete with extension tube, operating key and cover

E. A fire hose unit shall be installed to serve each fire hydrant; it shall comprise 65mm

dia. textile fire hose 40 m long with male and female couplings, nozzle jet and

spray with male coupling, and cabinet

2.6. SPRINKLERS

A. Sprinklers shall be U.L / F. M approved for the required use



B. Sprinklers shall be N. P. T- 1 /2” with flow factor K= 5.6 and working temperature

of 68 oC

PART 3 - GENERAL 3.1. OPERATING AND MAINTENANCE INSTRUCTIONS

A. Three sets of operating and maintenance instructions, on cloth, covering completely

the operation and maintenance of fire fighting system, and automatic control shall

be furnished to the Owner. In addition, one set of operating and maintenance

instructions for each article shall be neatly framed behind glass and hung where

directed

B. The Contractor shall upon completion of the Contract, furnish a list of names of

local manufacturers representatives, with telephone numbers in order to expedite

the future ordering of replacement parts

3.2. OPERATING SERVICES, MAINTENANCE AND GUARANTEE

A. After completion of all installation and required tests, the Contractor shall be

responsible for and shall effectively maintain and uphold in good working

condition to the satisfaction of the Engineer every part of the works for the

period of twenty four (24) Calendar months from the date of issue of the

Substantial Completion Certificate for the whole period

B. The contractor shall at his own cost make good all defects due to faulty design

bad workmanship or the use of defective or improper material which shall occur

during the approved period, and shall replace at his own expense such parts or

materials which in the opinion of the Engineer found unsatisfactory. During the

approved period, the contractor is required to carry on all maintenance work

including cleaning, oiling, greasing, adjusting controls, checking oil levels,

replacing defect parts and pressure etc., and painting at the end of maintenance

period




SECTION 15611

VARIABLE REFRIGERANT FLOW (VRF)

PART 1 - GENERAL

1.1. SCOPE OF WORK

C. Indoor units

D. Outdoor units

1.2. SUBMITTALS

A. Submit data indicating:

i. Cooling and heating capacities

ii. Dimensions

iii. Weights

iv. Rough-in connections and connection requirements

v. COP at design operating conditions

vi. Electrical requirements with electrical characteristics and connection

requirements

vii. Controls

viii. Accessories

B. Manufacturer's Installation Instructions: Submit assembly, support details,

connection requirements, and include start-up instructions

C. Manufacturer's certificate: Certify Products to meet specified requirements

D. Manufacturer’s Field Reports: Submit start-up report for each unit

1.3. CLOSEOUT SUBMITTALS

A. Project Record Documents: Record actual locations of controls installed remotely

from units

B. Operation and maintenance data: Submit manufacturer's descriptive literature,

operating instructions, installation instructions, and maintenance and repair data



1.4. DELIVERY, STORAGE, AND HANDLING

A. Accept units and components on site in factory protective containers, with factory

shipping skids and lifting lugs. Inspect for damage

B. Comply with manufacturer's installation instruction for rigging, unloading and

transporting units

C. Protect units from weather and construction traffic by storing in dry, roofed location

1.5. COORDINATION

A. Coordinate installation of condensing units with concrete pad and roof structure

B. Coordinate installation of air handling units with building structure

1.6. CODES AND STANDARDS

A. Work and materials shall conform to the British Standards and Codes of Practice, and

with all prevailing rules and regulations pertaining to adequate protection of all

moving parts, or otherwise hazardous conditions. Nothing in this Specification shall

be construed to permit work not conforming to the most stringent of the applicable

codes



IHVE The Institute of Heating and Ventilation Engineers

(UK)

EU Euro Vent


A.R.I Air Conditioning and Refrigeration Institute (USA)

ASTM American Society for Testing and Materials

AWS American Welding Society




BSI British Standard Institute

NFPA National Fire Protection Association



CIBSE The Chartered Institute of Building Services

Engineers (UK)

HVCA Heating and Ventilation Contractor’s Association

(UK)

B. Other International Standards may be considered provided they meet with the above

standards as a minimum

C. The Codes and Standards mentioned above are hereby made part of the Contract

Specification for the project, and the Contactor accepts full liability for ensuring

compliance with the same

PART 2 - PRODUCTS OF VRF SYSTEM

2.1. UNIT

A. The unit shall be a multi-split system inverter-driven heat pump air conditioner for

utilizing R410a refrigerant

B. Unit shall be complete refrigeration cycle, refrigeration pipe networks electrical

components and enclosing cabinets, and the outdoor unit shall be completely

weather-proof and shall be suitable for outdoor installation. Both indoor unit and the

outdoor unit shall be supplied by the same manufacturer properly assembled

C. All units shall be able to operate in dehumidification mode

D. All pipe works shall be , thoroughly tested, cleaned and charged with R410a

refrigerant at the factory and shall comply with European Norms

2.2. CAPACITY

A. All indoor and outdoor units capacities shall be in accordance to the schedule of

equipment

B. The HVAC contractor must submit calculation of the refrigerant pipes sizing taking

in consideration the de-rating of the VRF-System due to:

i. Height and horizontal run differences between Indoor Units (IU) and

Outdoor Units (OU)

ii. Fittings, valves, multi kits accessories

iii. Ambient conditions

iv. Indoor Design Conditions

2.3. INDOOR UNIT

Units shall be of either:



i. Concealed Ceiling Units

ii. Decorative 4-way ceiling mounted type indoor units

2.4. CASING

A. Casing construction shall be acoustically lined

B. Casing sheet steel shall be sufficiently stiffened to eliminate vibration

C. The unit shall be of readily removable panels and shall be laid out so that all internal

equipment is easily accessible for maintenance or replacement

D. Access panel location shall be compatible with the plant layout to maintain adequate

working clearances not less than those published in the manufacturer’s data

E. The refrigeration circuits shall include a liquid line filter drier and a thermostatic

expansion valve and control valve suitable for VRF applications

2.5. FANS & MOTORS

A. Fans shall be multi-blade, curved centrifugal type. centrifugal type, statically and

dynamically balanced, and directly driven by motor. The fan motor bearing shall be

permanently lubricated. The fan shall be of three operating positions Hi, Med and

Low can be selected according to the required conditions

B. Motor design, marking, rating, performance and testing shall be in accordance with

Relevant British Standards. Motors shall be designed to have a winding temperature

rise to class B requirements and be provided with class F insulation

C. The unit shall be pre-wired to relevant British Standards complete with contactors,

overloads and control circuit fuses and shall have a terminal including an earth

connection for field wiring of both power and controls

D. Units shall incorporate thermal overloads for fan motors and compressors, manually

reset high pressure cut outs, thermostors with lockout circuiting, low pressure

controls with lock out provision, start to start timers (5-10 mins)

E. The protection shall be arranged so that an alarm will shut down the affected

compressor and trigger an alarm light on the unit but will permit the fan and any other

compressors to continue to operate

F. Unit casing shall be insulated throughout including the condensate tray by, a

minimum 13 mm thick, closed cell rubber with scrim finish, bonded to the casting

2.6. COOLING COILS

A. Coil shall be the multi-pass, cross-finned tube type, equipped with highly-efficient

aluminum fins, mechanically bonded to seamless, oxygen-free copper tubes



B. The fins shall be spaced at no more than 12 fins per 25.4mm. The coil shall be

cleaned, dehydrated and tested for leakage at the factory

2.7. DRAIN PANS

A. Units shall be fitted with a one piece drip pan, extending beyond the cooling coil

sections to cover return bends and shall have a second deep flanged drain pan fitted

outside of unit chassis having 22 mm. OD outlet to cover where necessary random

condensate from valves, fittings and coil drip pan outlet

B. Drip and drain pans shall be zinc coated and treated both sides with a protective

coating of mastic

C. Both pans shall be reversible for left or right hand location. The outer surface of all

condensate drain pans shall be adequately treated/insulated to prevent secondary

condensation occurring

D. All drip and drain pans shall be designed to reduce to the absolute minimum the

formation of Legionella by careful detailing of both pans and pipe work connections

E. The protective mastic coating shall be suitable for the frequent application of

disinfectant when maintenance engineers flush through drip/drain pans and fan coil

drainage pipe work

F. The condensate drain pan shall be treated to resist corrosion and suitable to catch all

condensate and any moisture carry over from the coil shall be provided

2.8. ROOM THERMOSTAT

A. A wall-mounted liquid crystal room thermostat with recessed housing and over

lapping cover plate shall control the ducted indoor unit. The housing shall have

conduit entry provision and shall be handed to the electrical Sub Contractor with

instructions for fixing at the time that conduits are installed

B. Interconnecting cables shall terminate at a fixed terminal strip within the housing and

all connections to the components mounted on the fascia

C. Facilities on the sensor shall include:

i. Fan high, medium and low speed selector

ii. ON/OFF Auto switch

iii. Temperature set point

iv. Set-back temperature selection

v. Timer



2.9. DUCTED CONCEALED INDOOR UNIT

A. The design construction, materials and finishes of all units shall be suitable for the

locations and operating conditions indicated in these specifications and the design

drawings

B. All units shall be provided with easy access to fans, controls, filters, coils, vents,

drain and valve connections

C. Units shall be selected with sound levels at least 35db below required room specified

sound levels at design speed

D. The chassis shall be fabricated from at 1.0mm thick galvanized sheet steel to form a

rigid unit fully sealed to eliminate extraneous air leakage free from sharp edges and

complete with fixing lugs

E. Thermal insulation of 12-mm. minimum thicknesses shall be applied to all sides of

coil sections, and beneath all cooling coil drip pans

F. All insulation must be non-flammable, non-toxic, and possess minimum smoke

propagation qualities

G. Acoustic treatment shall be supplied to casings as required to meet the room specified

sound levels

H. Reinforced sheet steel enclosures shall be provided for room-mounted units to form a

rigid cabinet that will not flex or vibrate during unit operation. There shall be space

within each cabinet for piping connections and valves

I. Access shall be provided in cabinets to fans, coils, filters and electrics. Access to

control switches and coil connections shall be through hinged flaps on the top panel

discharge grille. Front panels shall be secured with positive locking tamper proof

fasteners, hinged for horizontal units

J. The design of the enclosures shall enable air filters to be serviced without having to

remove any of the unit paneling

K. When specified or shown on drawings, return air plenums shall be provided to suit

particular manufacturer's standard model type

L. A forward curved centrifugal type, resiliently mounted with high efficiency motor.

Motor permanently lubricated with built-in thermal overload protection

M. Impellers shall be statically and dynamically balanced for quiet operation

N. The fan and motor assembly shall be removable on a slide out arrangement. For

changeover systems, the motor shall be positioned below the unit coil to eliminate

damages due to excessive heat and air temperature

O. Maximum motor speeds shall not to exceed 24 rps



P. Cooling coil face velocities shall be sufficiently low to prevent moisture carry over

beyond the condensate drip tray, and to limit noise generation

Q. All units shall have air filters on the inlet side prior to coil and fan sections

R. Filters shall be of throwaway type readily accessible for inspection, removal and

replacement

S. The media shall be vermin and rot proof and shall not break up in the air stream

T. Filter media shall be non-flammable and shall not produce smoke or large flows of

noxious products when exposed to fire

U. Bonding agents shall have a flash point of not less than 163 °C

2.10. DECORATIVE INDOOR UNITS CABINET

The cabinet of the Ceiling, wall or floor mounted units shall be constructed of heavy

duty polymer or finished steel sheet baked with synthetic resin-paint, with a plastic air

panel assembly

2.11. 4-WAY CEILING UNITS

A. Four-way Ceiling units shall be provided with condensate pump

B. Pump assembly shall be of plastic body and trimmings

C. The unit shall be motor driven and shall be under the control of float level switch

D. A direct alarm signal shall be indicated on the equipment control panel to indicate

pump failure

2.12. REFRIGERATION CYCLE

The refrigeration cycle shall be equipped with a heat exchanger, an electronic

expansion valve, solenoid valves and flare connections and 2 shut off valves

2.13. OUTDOOR UNIT

A. Cabinet:

i. The cabinet shall be constructed of galvanized steel sheet, baked with

synthetic resin paint

ii. The service panel shall be easily removable for service access to the

electrical components and the compression section

B. Refrigeration cycle:



Each refrigeration cycle shall be equipped with a scroll compressor, a solenoid valve,

a heat exchanger, an accumulator, a 4-way valve and flare connection parts

C. Compressor protection:

Compressor inverter type The compressor shall be protected against breakdown by a

quick response over current relay, a high pressure switch, a wrap-around type oil

heater and a discharge gas thermistor

D. Outdoor fan and fan motor:

The outdoor fan shall be the plastic propeller type, dynamically balanced, and the fan

shall be directly driven for vertical-flow air discharge. The fan motor shall be

permanently lubricated and be protected from ingress of water

E. Outdoor Condensing Coil:

i. The condenser coils shall be the multi-pass, cross-finned tube type,

equipped with highly-efficient aluminum fins, mechanically bonded to

oxygen-free copper tubes.

ii. The coil shall be cleaned, dehydrated and tested for leakage at the factory

iii. All fins shall be protected against corrosive environment by proper

polymer coating

2.14. CONTROL

A. All electrical control devices shall be enclosed in the indoor and outdoor units

B. In addition to the compressor protection devices, the indoor fan motor shall be

equipped with an internal thermostat

2.14.1. MASTER MICROPROCESSOR CONTROLLER

A. Furnish microprocessor controller to perform the following functions:

i. Control and regulation of cooling and heating cycles

ii. Management functions of all sensors and actuators

iii. Control of all safety devices

iv. Oil balance between compressors

v. Automatic management of all indoor units on the system bus

vi. Low-noise night operation

vii. Duty, standby and run hours management of compressors



viii. Self diagnosis functions of outdoor and indoor units

ix. Full integration with the BMS

B. The outdoor fan motor shall be protected by an internal thermostat. The indoor fan

motor shall be directly supplied with the power source from the control circuit. The

functions of these control devices shall compose an electrical sequence of manual

starting and stopping, automatic continuous operation whenever the room thermostat

requires, and the protection devices allow the operation

C. Each indoor unit shall be supplied with liquid crystal remote

2.14.2. REFRIGERANT PIPING AND FITTINGS

A. Refrigerant pipes installed in the field shall consist of copper tubing and recessed

solder joint fittings. Tubing shall be in accordance with ASTM Specification B 88-

61 type 'k' hard drawn

B. Fittings shall be wrought copper or tinned cast brass, specifically selected for the

VRF system application

C. Fittings shall be supplied by the equipment manufacturer and installed in

accordance to the recommendation of the equipment manufacturers

D. Joint brazing should carried out with care as to prevent intrusion of foreign matters.

Blow all pipes with N2

E. Tubing shall be protected against oxidation during silver soldering by use of dry

nitrogen flowing through the tubing

F. Test all pipes by at twice the maximum operating pressure

G. All outdoor Refrigerant pipes shall run in cable trays or ladder for protection

PART 3 - EXECUTION

3.1. EXAMINATION

Verify concrete pad for condensing unit is ready for unit installation

3.2. INSTALLATION – INDOOR UNITS

A. Install Indoor Units with vibration isolators and mounting bracket

B. Install condensate piping with trap when gravity port used and route from drain pan

to condensate drainage system

C. Install components furnished loose for field mounting



D. Install connection to electrical power wiring in accordance with electrical

specifications

3.3. INSTALLATION – CONDENSING UNITS

A. Install condensing units on vibration isolators

B. Install units on concrete foundations

C. Install refrigerant piping from Indoor Units to condensing unit. Install refrigerant

specialties furnished with unit. Install thermal insulation with cladding on suction

piping. All brazed joints shall be accessible for future inspection and leak detection.

Provide access doors for this purpose for concealed areas. Access doors shall be

marked by the installer and provided by the civil contractor

D. Evacuate refrigerant piping and install full charge of refrigerant

E. Install electrical devices furnished loose for field mounting

F. Install control wiring and cables between air fan coil unit, condensing unit, and

field installed accessories

G. Install connection to electrical power wiring in accordance with electrical

specifications

H. Install the BMS integration network and wiring

3.4. MANUFACTURER'S FIELD SERVICES

A. Furnish initial start-up and shutdown during first year of operation, including

routine servicing and checkout

B. Provide on-site training of Owner's personnel on the operation, maintenance and

trouble shooting for the whole system. Training course shall be for full five working

days after which the manufacturer shall issue a certificate that the attendees are

capable of carrying out the above mentioned tasks

3.5. CLEANING

Vacuum clean coils and inside of unit cabinet

3.6. MANUFACTURER'S FIELD SERVICES

A. Demonstrate fan-coil unit operation and maintenance

B. Demonstrate starting, maintenance, and operation of condensing unit

3.7. NOTES

A. The design is based upon the equipment listed in the equipment



B. The tender pricing shall be based on any of the above listed acceptable

manufacturers for each type

C. The contractor must submit the base tender complying with the listed manufacturers

equipment. An alternative offer from alternative manufacturers may be submitted in

addition to the base tender, provided that full substantiating data of the equipment,

and noting the non-compliant features of the alternative equipment together with

the cost implications, is submitted. All alternative equipment offers may be

accepted or rejected at the sole discretion of the Engineer as it shall be to the

approval and final acceptance of the Engineer

D. Submit the compliance form with the Tender indicating the proposed manufacturers

for major equipment. Treat all equipment for which data submissions are required

as major equipment for this purpose

E. Changes from the equipment offered at Tender will not normally be permitted

unless the Engineer is satisfied that there is significant advantage in Principle




SECTION 15671

(NOT INCLUDED IN THIS CONTRACT)

HEAT PUMP CHILLERS PART 1 - GENERAL 1.1. SCOPE OF WORK

A. Provide factory assembled and tested outdoor air-heat pump chillers as indicated,

consisting of compressors, evaporator, reciprocating, condensers, expansion valves,

and (microprocessor) control panels. Chillers shall operate at 45-55oF (7.2-12.7 oC)

water temp. and shall be 400/230V, 50 Hz, 3 phase

B. Provide capacity and electrical characteristics as scheduled

C. Refrigerant: Provide full operating charge of chlorine free refrigerant (R- 407C,R-

410) and oil

1.2. HOUSING

A. Provide manufacturer’s standard equipment housing construction, corrosion

protection coating, and exterior finish

B. Provide removable panels and/or access doors for inspection and access to internal

parts and components

C. Unit shall be weatherproof with ample space for easy access to power and control

panels

1.3. HOUSING

A. Provide shell-and-tube design with seamless copper tubes roller expanded into tube

sheets

B. Design, test, and stamp for refrigerant side working pressure of 300 PSIG

minimum, and water side working pressure of 235 PSIG minimum, in accordance

with ASME pressure vessel code

C. Cooler fouling factor shall be 0.001

D. Provide one water pass with series of internal baffles, insulate with ½” minimum

flexible unicellular insulation with maximum K-value of 0.26

E. Provide water drain connection and bulb wells for temperature controller and low-

temperature cutout

F. Multiple-Compressor Unit: Provide independent multiple refrigerant circuits with

casketed evaporator heads



1.4. CONDENSER

A. Construct coils with configured aluminum fins mechanically bonded to seamless

copper tubing. Provide integral sub cooling circuit with liquid accumulators. Leak

test coils with air under water at 450 PSIG air pressure. Provide protective grilles

over exposed coil faces

B. Multiple-Compressor Unit: Provide multiple circuited condenser coils

C. Condenser fans: Provide propeller fans vertical discharge, direct driven, draw-

through design, statically and dynamically balanced. Provide permanently

lubricated ball-bearing phase motors with overload protection. Provide protective

grille over air discharge

D. Low Ambient Control: Provide head pressure control, designed to operate at

temperature down to 40oF

1.5. COMPRESSORS

A. Semi Hermetic reciprocating compressors with anti friction treatment specially

designed with chlorine free refrigerant. R-407C, lubricated by oil using a reversible

oil pump

B. Crankcase heater includes a protection device that stops the compressor in case of a

fault, 4-pole electric motor with two windings cooled by suction gas

C. It shall be protected by the following safety devices against the abnormal operating

conditions, discharge gas thermostat, thermo-magnetic circuit breaker, ground

current detector to avoid acid formation

D. The compressors shall be mounted on rubber anti-vibration dampers and equipped

with a discharge buffer and suction and discharge service valves

1.6. CAPACITY MODULATION

A. Compressor capacity is controlled by a hydraulically - operated slide valve

B. The slide valve operator is a piston/cylinder assembly, pressurized oil fed to and

bled from the assembly positions the valve. Oil movement is controlled by two

solenoid valves, each solenoid is operated by “Load” and “Unload” signals from the

capacity control system (return water temperature)

1.7. REFRIGERANT CIRCUIT

A. Chiller shall have minimum two refrigerant circuits with compressor per circuit.

Provide for each refrigerant circuit the following:

i. Liquid line shut off-valve

ii. Removable core filter drier



iii. Liquid line sight glass with moisture indicator

iv. Insulated suction line

v. Suction and discharge service valves

vi. Thermostatic expansion valves

vii. Solenoid valve

1.8. REFRIGERANT CIRCUIT

A. Provide weather tight microprocessor control panel, factory-wired for external

connection only. All controls including sensors shall be factory mounted and tested

prior to shipment and UL listed factory

B. The unit control module utilizing adaptive control microprocessor automatically

takes action to avoid unit shut down due to abnormal operating conditions

associated with low refrigerant temperature, high condensing operating condition

continue until a protective limit is violated, the unit will be shut down

C. Provide the following controls:

i. Power controls for start-up and shut down

ii. Terminal strip

iii. Pump down control relay

iv. Compressor starter relay Entire cycle logic

v. Reset relay

vi. No recycling compressor overload relay

vii. High/Low pressure cutout

viii. Oil pressure cutout, except for low oil pressure compressor systems

ix. Low-temperature cutout

x. Leaving chilled water temperature controller sensor

xi. Compressor motor protector

xii. Compressor anti-recycle timer

xiii. Control circuit breaker

xiv. Compressor contactor



xv. Condenser fan motor contactors

1.9. ACCESSORIES

A. Provide the following accessories:

i. Vapor proof chilled water flow switch

ii. Suction and discharger gauges

iii. Pressure gauges (high, low and oil)

iv. Wire mesh around chiller perimeter

v. Low ambient kit

vi. Circuit breaker for each compressor

vii. External overload for each compressor

viii. Hot gas muffler

ix. Cylindrical capacity unloaded (1-step per compressor)

x. High ambient kit by compressor unloading

xi. Discharge gas thermostat

xii. Suction accumulators

xiii. Door isolator

xiv. Anti-vibration mounting compressors

PART 2 - EXECUTION

2.1. INSTALLATION OF RECIPROCATING CHILLERS

A. General: Install reciprocating chillers in accordance with manufacturers written

instructions. Install reciprocating units plumb and level, firmly anchored in

locations indicated; maintain manufacturer’s recommended clearances

B. Arrange piping for easy dismantling to permit tube cleaning

C. Install the air-cooled reciprocating chillers in the sit in a way so as to prevent any

hot reciprocating air recirculation (from condenser fans discharge to condenser

suction)

D. Support: Install reciprocating chillers on floating base (as specified in section 15070

Vibration Isolation)



2.2. START-UP

A. Provide services of manufacturer’s factory-trained service representative to start up

reciprocating chillers. Include in start-up procedures, dehydration, testing controls,

demonstration of compliance with requirements, and replacement of damaged or

malfunctioning controls and equipment

B. Do not place chillers in sustained operation prior to initial balancing of mechanical

system which interface with the reciprocating chillers




SECTION 15733

PACKAGED ROOFTOP AIR CONDITIONING UNITS

PART 1 - GENERAL

1.1. SCOPE OF WORK

A. Installation of the unit

B. Required Connections

1.2. SCOPE OF WORK

A. Submit data indicating:

ix. Cooling and heating capacities

x. Dimensions

xi. Weights

xii. Rough-in connections and connection requirements

xiii. COP at design operating conditions

xiv. Electrical requirements with electrical characteristics and connection

requirements

xv. Controls

xvi. Accessories


connection requirements, and include start-up instructions

C. Manufacturer's certificate: Certify Products to meet specified requirements

D. Manufacturer’s Field Reports: Submit start-up report for each unit

1.3. CLOSEOUT SUBMITTALS

C. Project Record Documents: Record actual locations of controls installed

remotely from units

D. Operation and maintenance data: Submit manufacturer's descriptive literature,

operating instructions, installation instructions, and maintenance and repair data




D. Accept units and components on site in factory protective containers, with factory

shipping skids and lifting lugs. Inspect for damage

E. Comply with manufacturer's installation instruction for rigging, unloading and

transporting units

F. Protect units from weather and construction traffic by storing in dry, roofed location

1.5. COORDINATION

A. Coordinate installation of condensing units with concrete pad and roof structure

B. Coordinate installation of unit's connections with building structure

1.6. CODES AND STANDARDS

A. Work and materials shall conform to the British Standards and Codes of Practice,

and with all prevailing rules and regulations pertaining to adequate protection of all

moving parts, or otherwise hazardous conditions. Nothing in this Specification shall

be construed to permit work not conforming to the most stringent of the applicable

codes



IHVE The Institute of Heating and Ventilation Engineers

(UK)

EU Euro Vent


A.R.I Air Conditioning and Refrigeration Institute (USA)




BSI British Standard Institute

HVCA Heating and Ventilation Contractor’s Association

(UK)

B. Other International Standards may be considered provided they meet with the above

standards as a minimum



C. The Codes and Standards mentioned above are hereby made part of the Contract

Specification for the project, and the Contactor accepts full liability for ensuring

compliance with the same

PART 2 - PRODUCTS OF PACKAGE UNITS SYSTEM

2.15. UNIT

A. Package unit heat pump, R407C,R410, factory installed and tested microelectronic

controls, scroll compressors, for indoor fan shall have belt driven, FC, centrifugal

fans with fixed motor sheaves

B. All motors shall be circuit breaker protected

C. Units shall be provided an external-opened location for mounting fused disconnect

device

D. An outside air damper shall be adjustable for up to 25% of outside air

E. Economizer shall be factory installed. The assembly includes: fully modulating 0-

100% percent motor and dampers, minimum position setting, preset linkage, wiring

harness, and differential enthalpy control

F. Exhaust fan, power exhaust shall be available at all units and shall be factory

installed. It shall assist the barometric relief the damper to maintain building

pressurization

2.16. CAPACITY

All units capacities shall be in accordance to the schedule of equipment

2.17. CONTROL

A. Controls unit shall be completely factory wired with necessary controls and

terminals block for power wiring

B. Microprocessor controls shall be provided for all 24 v control functions

C. The resident control algorithms shall supply all the heating, cooling and/or

ventilating decisions in response to electronic signals from sensors measuring

indoor and outdoor temperatures

D. The control algorithm maintains accurate temperature control, minimizes drift from

set point and provides better building comfort. A centralized microprocessors shall

provide anti-short cycle timing and time delay between compressors to provide a

higher level of machine protection

E. CO2 sensor: This accessory shall be compatible with 0-50% hood and economizer

options. It shall measure CO2, (or CO2 and volatile organic compounds) in order to



increase/decrease the amount of fresh air and the amount of the air inside the

building




SECTION 15739 SPLIT SYSTEM AIR CONDITIONING UNITS



1. Air handling unit (indoor unit). 2. Condensing unit. (outdoor unit)

1.2 SUBMITTALS

A. Product Data: Submit data indicating:

1. Cooling and heating capacities. 2. Dimensions. 3. Weights. 4. Rough-in connections and connection requirements. 5. Duct connections. 6. Electrical requirements with electrical characteristics and

connection requirements. 7. Controls. 8. Accessories.


connection requirements, and include start-up instructions.

C. Manufacturer's Certificate: Certify Products to meet specified requirements. D.

Manufacturer’s Field Reports: Submit start-up report for each unit.

1.3 CLOSEOUT SUBMITTALS

A. Project Record Documents: Record actual locations of controls installed

remotely from units.

B. Operation and Maintenance Data: Submit manufacturer's descriptive literature,

operating instructions, installation instructions, and maintenance and repair

data. 1.4 QUALITY ASSURANCE

A. Performance Requirements:, Energy Efficiency Rating (EER) not less than

prescribed by ASHRAE 90.1 when used in combination with compressors and

evaporator coils when tested in accordance with ARI 210/240.

B. Cooling Capacity: Rate in accordance with ARI 210/240.

C. Sound Rating: Measure in accordance with ARI 270.

D. Insulation and adhesives: Meet requirements of NFPA 90A.



E. Maintain two copies of each document on site.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Accept units and components on site in factory protective containers, with factory shipping skids and lifting lugs. Inspect for damage.

B. Comply with manufacturer's installation instruction for rigging,

unloading and transporting units.

C. Protect units from weather and construction traffic by storing in dry, roofed

location. 1.6 COORDINATION

A. Coordinate installation of condensing units with concrete pad and roof

structure.

B. Coordinate installation of air handling units with building structure.

PART 2 PRODUCTS

2.1 SPLIT SYSTEM AIR CONDITIONING UNITS

A. Product Description: Split system consisting of indoor air handling unit and

outdoor condensing unit including cabinet, evaporator fan, refrigerant cooling

coil, compressor, refrigeration circuit, condenser, air filters, thermostat and

controls, air handling unit accessories, condensing unit accessories, refrigeration

specialties, and inter connecting refrigerant piping between indoor and outdoor

units including thermal insulation, control wiring and power cables.

B. Unit shall be suitable for cooling and reverse cycle heat pump for heating. 2.2 AIR HANDLING UNIT

A. Configuration: Horizontal air delivery with cabinet or ducted type or cassette as

indicated on drawings.

B. Cabinet: 1. Panels: Constructed of galvanized steel with baked enamel finish.

Cabinet shall be decorative type. 2. Insulation: Factory applied to each surface to insulate entire cabinet. 13 mm thick

neoprene coated glass fiber with edges protected from erosion.



C. Evaporator Fan: Forward curved centrifugal type, resiliently mounted

with high efficiency motor complying with NEMA MG1. Motor permanently

lubricated with built- in thermal overload protection.

D. Evaporator Coil: Constructed of copper tubes expanded onto aluminum fins.

Factory leak tested under water. Removable, PVC construction, double-sloped

drain pan with piping connections on both sides.

E. Refrigeration System: Refrigeration circuits controlled by factory installed

thermal expansion valve.

F. Air Filters: 25 mm thick glass fiber cleanable media in metal frames. 25 to

30 percent efficiency based on ASHRAE 52.1.

G. Air Handling Unit Accessories: 1. Mounting Sub-base with construction and finish matching unit casing. 2. Vibration Isolators: Neoprene-in-shear type. 3. Decorative cabinet of galvanized steel with backed enamel with

discharge grille and motor operated air deflection blades and return grille.

2.3 CONDENSING UNIT

A. General: Factory assembled and tested air cooled condensing units, consisting

of casing, compressors, condensers, coils, condenser fans and motors, and unit controls.

B. Unit Casings: Exposed casing surfaces constructed of galvanized

steel with manufacturer's standard baked enamel finish. Designed for outdoor

installation and complete with weather protection for components and controls,

and complete with removable panels for required access to compressors,

controls, condenser fans, motors, and drives.

C. Compressor: Single refrigeration circuit with rotary or scroll type compressors,

resiliently mounted, with positive lubrication, and internal motor overload

protection.

D. Condenser Coil: Constructed of copper tubing mechanically bonded to

aluminum fins, factory leak and pressure tested.

E. Controls: Furnish operating and safety controls including high and low

pressure cutouts. Control transformer. Furnish magnetic contactors for compressor and condenser fan motors.

F. Condenser Fans and Drives: Direct drive propeller fans statically and

dynamically balanced. Wired to operate with compressor. Permanently

lubricated ball bearing type motors with built-in thermal overload protection.

Furnish high efficiency fan motors.

G. Condensing Unit Accessories: Furnish the following accessories:



1. Controls to provide freeze protection on evaporator. 2. Time delay relay. 3. Anti-short cycle timer.

4. Disconnect switch. 5. Vibration isolators of neoprene rubber. 6. Condenser Coil Guard: Condenser fan openings furnished with PVC

coated steel wire safety guards.

H. Refrigeration specialties: Furnish the following for each circuit: 1. Charge of compressor oil. 2. Full charge of refrigerant. 3. Shut-off valves on suction and liquid piping. 4. Charging valve. 5. Crankcase heater. 6. Hot gas muffler. 7. Pressure relief device.

I. Refrigerant: Furnish full charge of ozone friendly refrigerant R410, or 407c.

2.4 CONTROLS

A. Thermostat: Remote space thermostat with single stage cooling. Furnish wall

bracket for thermostat. PART 3 EXECUTION

3.1 EXAMINATION

A. Verify concrete pad for condensing unit is ready for unit installation.

3.2 INSTALLATION - AIR HANDLING UNIT

A. Install air handling units on vibration isolators and mounting bracket.

B. Install floor mounted units on concrete housekeeping pads at least 87 mm

high and 150 mm wider than unit.

C. Install condensate piping with trap and route from drain pan to condensate

drainage system.

D. Install components furnished loose for field mounting.

E. Install connection to electrical power wiring in accordance with electrical

specifications. 3.3 INSTALLATION - CONDENSING UNIT

A. Install condensing units on vibration isolators.

B. Painted galvanized steel base to raise unit 200mm above finished roof level.

C. Install insulated refrigerant piping from unit to condensing unit. Install



refrigerant specialties furnished with unit, where pipes are exposed they shall

be housed inside a galvanized steel trunk size 10x7cm.

D. Evacuate refrigerant piping and install full charge of refrigerant.

E. Install electrical devices furnished loose for field mounting.

F. Install control wiring and cables between air handling unit, condensing unit, and field installed accessories.

G. Install connection to electrical power wiring in accordance with electrical

specifications. 3.4 MANUFACTURER'S FIELD SERVICES

A. Furnish initial start-up and shutdown during first year of operation,

including routine servicing and checkout. 3.5 CLEANING

A. Vacuum clean coils and inside of unit cabinet.

B. Install new cleanable filters in units at Substantial Completion.

3.6 DEMONSTRATION

A. Demonstrate air handling unit operation and maintenance.

B. Demonstrate starting, maintenance, and operation of condensing unit

including freeze protection on evaporator.

END OF SECTION



SECTION 15742

FAN COIL UNITS


A. Fan Coil Units

B. Controls

C. Unit Enclosure

1.2. RELATED WORK

A. Section 15830 Air Distribution Equipment (Fans)


ANSI American National Standards Institute

AMCA Air Movement and Control Association

A.R.I Air Conditioning and Refrigeration Institute



1.4. SUBMITTALS

A. Copies of manufacturers technical specifications including detailed installation

instruction

B. Operation and maintenance manual including spare parts list

C. Catalogue data showing illustrations and schedule of parts to facilitate assembly and

disassembly of the units

D. Certificate of compliance for materials and operators

PART 2 - GENERAL 2.1. ACCEPTABLE MANUFACTURERS

A. The Contractor shall submit to the supervising engineer the names of three

manufacturers and their products which will be acceptable under this section.

Approval of the manufacturer or product must be obtained before proceeding with



associated work

B. Units shall be the product of manufacturer regularly engaged in the production of

these units issuing complete catalog data of same

2.2. GENERAL

A. Construct all apparatus of materials of suitable for the conditions encountered

during operation

B. Thoroughly clean the entire system before installing filters or operating the fans

C. Each unit shall conform to the requirements of UL

2.3. PERFORMANCE

A. Provide fan coil units having the performance and duties indicated in the

schedules when operating under design conditions

B. Units shall be selected to maintain the required NC levels in the conditioned areas

2.4. CABINET

A. Exposed type (Decorative): The cabinet shall be fabricated of 18 gauge

galvanized steel painted with weather proof paints and baked enamel finish.

Interior surfaces shall be lined with 15mm inch coated glass fiber insulation

complete with mounting brackets, suitable for either wall hangings or ceiling

hung

B. Cabinet color finish shall be selected on site to match finishes schedule

C. Concealed type of fan coil units to be without casing

2.5. CABINET

A. All fan coil units shall have heating / cooling coil

B. Coils shall be in accordance with Section 15750 and shall have the capacities

indicated in equipment schedules

C. Face velocity through coil shall not exceed 2.5 m/s

2.6. FANS

A. Fan wheels shall be centrifugal, forward curved double width type aluminum fan

wheel, statically and dynamically balanced in scrolls of galvanized steel, mounted

on connection shaft with motor

B. Fans to be selected at medium speed



C. FCU's to be selected at high static pressure with medium speed

2.7. MOTORS

A. Provide fan motors and motors controls. Motors shall be permanent split capacitor

type with integral thermal overload protection, three speed type and shall run

without undue noise or vibration, rubber isolators and thermal overload protective

devices shall be provided

B. Motors shall comply with the requirements of electrical section of these

specifications

C. Motor speed shall not exceed 1450 RPM

2.8. FILTERS

A. All fan coil units shall have synthetic type flat filter 15 mm thick

B. Face velocity through filters shall not exceed 2.5 m/s

2.9. INSULATION

A. All fan coil units shall be internally lined with 15mm thick fiber glass insulation for

coil and fan sections

2.10. CONTROLS

A. Each coil of fan coil unit shall be provided with the following controls:

i. A combination room thermostat with automatic change over and

manual three speed (LO-ME-HI) motor control switch with an ON/OFF

position of decorative appearance)

ii. Motorized modulating 2-way modulating with actuator valve

iii. 3 Nos. Isolating valves (gate valves)

iv. Test points

v. Drain pan with P-trap

vi. Globe valve

vii. Double regulating valve with metering station

viii. Strainer

ix. Temperature gauge



x. Pressure gauge

PART 3 - GENERAL 3.1. ACCEPTABLE MANUFACTURERS

A. Connect P-trap drain pan to condensate drain

B. Install unit in accordance with manufacturer's instructions

3.2. TESTING AND BALANCING

A. Testing and balancing shall be in accordance with section 15950




SECTION 15810 DUCTS



1. Duct Materials. 2. Insulated flexible ducts. 3. Single wall spiral round ducts. 4. Glass fiber reinforced plastic round ducts. (NOT INCLUDED IN THIS

CONTRACT). 5. Transverse duct connection system. 6. Casings. 7. Ductwork fabrication. 8. Kitchen hood exhaust ductwork fabrication. 9. Duct cleaning. 10. Duct leak testing

1.2 REFERENCES

A. National Fire Protection Association:

1. NFPA 90A - Standard for the Installation of Air Conditioning and Ventilating Systems. 2. NFPA 90B - Standard for the Installation of Warm Air Heating and Air Conditioning Systems. 3. NFPA 96 - Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations.

B. Sheet Metal and Air Conditioning Contractors:

1. SMACNA - Fibrous Glass Duct Construction Standards. 2. SMACNA - HVAC Air Duct Leakage Test Manual. 3. SMACNA - HVAC Duct Construction Standard - Metal and Flexible.

1.3 PERFORMANCE REQUIREMENTS

A. Variation of duct configuration or sizes other than those of equivalent or

lower loss coefficient is not permitted except by written permission. Size

round ducts installed in place of rectangular ducts in accordance with ASHRAE

table of equivalent rectangular and round ducts.



1.4 SUBMITTALS

A. Shop Drawings: Submit duct fabrication drawings, drawn to scale not smaller than

1:50, on drawing sheets same size as Contract Documents, indicating: 1. Fabrication, assembly, and installation details, including plans, elevations,

sections, details of components, and attachments to other work. 2. Duct layout, indicating pressure classifications and sizes in plan view.

For exhaust duct systems, indicate classification of materials handled as defined in this section.

3. Fittings. 4. Reinforcing details and spacing. 5. Seam and joint construction details. 6. Penetrations through fire rated and other walls. 7. Terminal unit and coil installations. 8. Hangers and supports, including methods for building attachment,

vibration isolation, and duct attachment.

B. Product Data: Submit data for duct materials duct liner duct connectors.

C. Samples: Submit two samples of typical shop fabricated duct fittings.

D. Test Reports: Indicate pressure tests performed. Include date, section tested, test pressure, and leakage rate, following SMACNA HVAC Air Duct Leakage Test Manual.

E. Manufacturer's Installation Instructions: Submit special procedures for glass

fiber ducts.

F. Manufacturer's Certificate: Certify installation of glass fiber ductwork meet or

exceed specified requirements.

1.5 CLOSEOUT SUBMITTALS

A. Project Record Documents: Record actual locations of ducts and duct fittings.

Record changes in fitting location and type. Show additional fittings used. 1.6 QUALITY ASSURANCE

A. Perform Work in accordance with SMACNA - HVAC Duct Construction

Standards - Metal and flexible.

Design pressure for the constant air volume systems and the extract systems is 500

Pa and for the variable air volume systems is 800 Pa.

B. Construct ductwork to NFPA 90A and NFPA 90B and NFPA 96 standards.



C. Maintain one copy of each document on site.



PART 2 PRODUCTS 2.1 DUCT MATERIALS

A. Galvanized Steel Ducts: ASTM A653/A653M galvanized steel sheet, lock-

forming quality, having G90 zinc coating in conformance with ASTM A90/A90M.

B. Steel Ducts: ASTM A1008/A1008M ASTM A1011/A1011M ASTM

A568/A568M. C. Fasteners: Rivets, bolts, or sheet metal screws.

D. Hanger Rod: ASTM A36/A36M;, galvanized steel; threaded both ends, threaded

one end, or continuously threaded. 2.2 INSULATED FLEXIBLE DUCTS

A. Product Description: Multiple layers of aluminum laminate supported by helical

wound spring steel wire; fiberglass insulation; aluminized vapor barrier film. 1. Pressure Rating: 2.5 kPa positive and 250 Pa negative. 2. Maximum Velocity: 20.3 m/s. 3. Temperature Range: -28 degrees C to 99 degrees C. 4. Thermal Resistance: 0.7 square meter- degree K per watt. 5. Single wall spiral round ducts. 6. Single wall spiral round ducts. 7. Single wall spiral round ducts.

2.3 SINGLE WALL SPIRAL ROUND DUCTS

A. Product Description: UL 181, Class 1, round spiral lockseam duct constructed of

galvanized steel.

B. Construct duct with the following minimum gages:

Diameter Thickness mm 1. 75-350 mm 0.6 2. 375-650 mm 0.7 3. 700-900 mm 0.85 4. 950-1250 mm 1.0 5. 1300-2100 mm 1.3

C. Construct fittings with the following minimum gages:

Diameter Thickness mm 1. 75-350 mm 0.7 2. 375-650 mm 0.85



3. 700-900 mm 1.0 4. 950-1250 mm 1.0 5. 1300-1500 mm 1.3 6. 1550-2100 mm 1.6

2.4 GLASS FIBER REINFORCED PLASTIC ROUND DUCTS

A. Product Description: Filament wound glass fiber reinforced plastic with fire

retardant thixotropic resin] when tested in accordance with ASTM E84.

B. Construct duct and fittings with the following minimum wall thickness: Diameter

Wall Thickness mm 1. 150-500 mm 3.175 2. 525-900 mm 4.75 3. 925-1500 mm 6.35

C. Joints: Galvanized sheet metal sleeve located inside duct, sealed and secured with

screws and mastic to have air tight construction. 2.5 TRANSVERSE DUCT CONNECTION SYSTEM

A. Product Description: SMACNA "F" rated rigidity class connection, interlocking

angle and duct edge connection system with sealant, gasket, cleats, and corner clips.

2.6 CASINGS

A. Fabricate casings in accordance with SMACNA HVAC Duct Construction

Standards - Metal and Flexible and construct for operating pressure of 500 Pa for

constant volume systems and 800 Pa for variable volume system.

B. Reinforce access door frames with steel angles tied to horizontal and vertical

plenum supporting angles. Furnish hinged access doors where indicated or

required for access to equipment for cleaning and inspection.

C. Fabricate acoustic casings with reinforcing turned inward. Furnish 1.50 mm back

facing and 0.80 mm perforated front facing with 2.4 mm diameter holes on 4 mm

centers. Construct panels 75 mm thick packed with 72 kg/cu m minimum glass

fiber media, on inverted channels of 1.50 mm. 2.7 DUCTWORK FABRICATION

A. Fabricate and support rectangular ducts in accordance with SMACNA HVAC

Duct Construction Standards - Metal and Flexible and as indicated on Drawings. Provide duct material, gages, reinforcing, and sealing for operating pressures indicated.



B. Fabricate and support round ducts with longitudinal seams in accordance with

SMACNA HVAC Duct Construction Standards - Metal and Flexible (Round Duct

Construction Standards), and as indicated on Drawings. Provide duct material,

gages, reinforcing, and sealing for operating pressures indicated.

C. Construct T's, bends, and elbows with minimum radius 1-1/2 times centerline duct

width. Where not possible and where rectangular elbows are used, provide airfoil turning vanes. Where acoustical lining is indicated, furnish turning vanes of perforated metal with glass fiber insulation.

D. Increase duct sizes gradually, not exceeding 15 degrees divergence wherever

possible; maximum 30 degrees divergence upstream of equipment and 45 degrees

convergence downstream.

E. Fabricate continuously welded round and oval duct fittings two gages heavier

than duct gages indicated in SMACNA Standard. Minimum 100 mm cemented slip

joint, brazed or electric welded. Prime coat welded joints.

F. Provide standard 45-degree lateral wye takeoffs. When space does not allow 45-degree lateral wye takeoff, use 90-degree conical tee connections.

2.8 KITCHEN HOOD EXHAUST DUCTWORK FABRICATION

A. Fabricate in accordance with SMACNA HVAC Duct Construction Standards -

Metal and Flexible and NFPA 96.

B. Kitchen Hood Exhaust Ducts: Construct stainless steel 304, sheets using

continuous external joints. Ducts joints shall be treated with heat resistant paste.


A. Verify sizes of equipment connections before fabricating transitions.

3.2 INSTALLATION

A. Install and seal ducts in accordance with SMACNA HVAC Duct Construction

Standards - Metal and Flexible.

B. During construction, install temporary closures of metal or taped polyethylene on open ductwork to prevent construction dust from entering ductwork system.

C. Use crimp joints with or without bead or beaded sleeve couplings for joining

round duct sizes 200 mm and smaller.

D. Install duct hangers and supports in accordance with Section 15060.



E. Use double nuts and lock washers on threaded rod supports.

F. Connect flexible ducts to metal ducts with draw bands.

G. Set plenum doors 150 to 300 mm above floor. Arrange door swing so fan static pressure holds door in closed position.

H. Casings: Install floor mounted casings on 100 mm high concrete curbs. At

floor, rivet panels on 200 mm centers to angles. Where floors are acoustically

insulated, furnish liner of 1.20 mm galvanized expanded metal mesh supported

at 300 mm centers, turned up 300 mm at sides with sheet metal shields.

I. Install kitchen range hoods in accordance with NFPA 96.

J. Install residue traps in kitchen hood exhaust ducts at base of vertical

risers with provisions for clean out. 3.3 INTERFACE WITH OTHER PRODUCTS

A. Install openings in ductwork where required to accommodate

thermometers and controllers. Install pitot tube openings for testing of

systems. Install pitot tube complete with metal can with spring device or screw

to prevent air leakage. Where openings are provided in insulated ductwork,

install insulation material inside metal ring.

B. Connect diffusers or plenums to low pressure ducts directly or with 500 mm maximum length of flexible duct held in place with strap or clamp.

C. Do not use flexible duct to change direction.

3.4 CLEANING

A. Clean duct system and force air at high velocity through duct to remove

accumulated dust. To obtain sufficient air flow, clean one half of system

completely before proceeding to other half. Protect equipment with potential to

be harmed by excessive dirt with temporary filters, or bypass during cleaning.

B. Clean large duct systems with high power vacuum machines. Protect

equipment with potential to be harmed by excessive dirt with filters, or bypass

during cleaning. Install access openings into ductwork for cleaning purposes. 3.5 TESTING

A. All ducts for supply air, return air, fresh air and exhaust air shall be tested for

leaks using light test in dark environment.

END OF SECTION



SECTION 15820

DUCT ACCESSORIES PART 1 - GENERAL 1.1. SCOPE OF WORK


i. Back-draft dampers

ii. Combination fire-and-smoke dampers

iii. Duct access doors

iv. Fire dampers

v. Volume control dampers

vi. Flexible duct connections

vii. Duct test holes

1.2. SCOPE OF WORK

A. Shop Drawings: Indicate for shop fabricated assemblies including volume control

dampers duct access doors and duct test holes

B. Product Data: Submit data for shop fabricated assemblies including fire dampers

including locations and ratings smoke dampers including locations and ratings

back-draft dampers flexible duct connections volume control dampers duct access

doors duct test holes and hardware used. Include electrical characteristics and

connection requirements

C. Manufacturer's Installation Instructions: Submit for Fire and Combination Smoke

and fire dampers

D. Manufacturer's Certificate: Certify products meet or exceed specified requirements


A. Protect dampers from damage to operating linkages and blades

1.4. FIELD MEASUREMENTS

A. Verify field measurements prior to fabrication

1.5. COORDINATION

A. Coordinate Work where appropriate with building control Work



1.6. EXTRA MATERIALS

A. Furnish five of each size and type of fusible link

PART 2 - PRODUCTS

2.1. BACK-DRAFT DAMPERS


Metal and Flexible, and as indicated on Drawings

2.2. DUCT ACCESS DOORS

A. Fabrication: Rigid and close fitting of galvanized steel with sealing gaskets and

quick fastening locking devices. For insulated ductwork, furnish minimum 25 mm

thick insulation with sheet metal cover;

i. Less Than 300 mm square, secure with sash locks

ii. Up to 450 mm Square: Furnish two hinges and two sash locks

iii. Up to 600 x 1200 mm : Three hinges and two compression latches with

outside and inside handles

iv. Larger Sizes: Furnish additional hinge

v. Access panels with sheet metal screw fasteners are not acceptable

2.3. FIRE DAMPERS

A. Fabricate in accordance with NFPA 90A and UL 555, and manufacturer’s condition

of listing. Permanently mark dampers for use in dynamic systems

B. Curtain Type Dampers: Galvanized steel with interlocking blades. Furnish stainless

steel closure springs and latches for closure under airflow conditions. Configure

with blades out of air stream. Damper rating shall be 1.5 hours. Furnish sleeve for

wall fixing and connection to duct work

C. Fusible Links: UL 33, separate at 71 oC with adjustable link straps for combination

fire/balancing dampers

2.4. VOLUME CONTROL DAMPERS



B. Splitter Dampers:



i. Material: Same gage as duct to 600 mm size in both dimensions, and two

gages heavier for sizes over 600 mm

ii. Blade: Fabricate of double thickness sheet metal to streamline shape,

secured with continuous hinge or rod

iii. Operator: Minimum 6 mm diameter rod in self aligning, universal joint

action, flanged bushing with set screw

iv. Single Blade Dampers: Fabricate for duct sizes up to 150 x 500 mm)

C. Multi-Blade Damper: Fabricate of opposed blade pattern with maximum blade with

200 mm. Assemble center and edge crimped blades in prime coated or galvanized

frame channel with suitable hardware

D. End Bearings: Except in round ductwork 300 mm and smaller, furnish end bearings.

On multiple blade dampers, furnish oil-impregnated nylon or sintered bronze

bearings. Furnish closed end bearings on ducts having pressure classification over

500 Pa

E. Quadrants:

i. Furnish locking, indicating quadrant regulators on single and multi-blade

dampers

ii. On insulated ducts mount quadrant regulators on standoff mounting

brackets, bases, or adapters

iii. Where rod lengths exceed 750 mm furnish regulator at both ends

2.5. FLEXIBLE DUCT CONNECTIONS



B. Connector: Fabric crimped into metal edging strip:

i. Fabric: UL listed fire-retardant neoprene coated woven glass fiber fabric

conforming to NFPA 90A, minimum density 1.0 kg/sq m

ii. Net Fabric Width: Approximately 150 mm wide

iii. Metal: 50 mm wide, 0.6 mm thick galvanized steel

2.6. DUCT TEST HOLES

A. Permanent Test Holes: Factory fabricated, air tight flanged fittings with screw cap

B. Furnish extended neck fittings to clear insulation



PART 3 - EXECUTION

3.1. EXAMINATION

A. Verify rated walls are ready for fire damper installation

B. Verify ducts and equipment installations are ready for accessories

C. Check location of air outlets and inlets and make necessary adjustments in position

to conform to architectural features, symmetry, and lighting arrangement

3.2. EXAMINATION

A. Install in accordance with NFPA 90A, and follow SMACNA HVAC Duct

Construction Standards - Metal and Flexible. Refer to Section 15810 for duct

construction and pressure class

B. Install back-draft dampers on exhaust fans or exhaust ducts nearest to outside

and/or where indicated on drawings

C. Install duct access doors for inspection and cleaning before and after filters, coils,

fans, automatic dampers, at fire dampers, combination fire and smoke dampers, and

as indicated on drawings. Install at locations for cleaning kitchen exhaust ductwork

in accordance with NFPA 96. Install minimum 200 x 200 mm size for hand access,

450 x 450 mm size for shoulder access, and as indicated on drawings. Install 100 x

100 mm for balancing dampers only. Review locations prior to fabrication

D. Install temporary duct test holes as required for testing and balancing purposes. Cut

or drill in ducts. Cap with neat patches, neoprene plugs, threaded plugs, or threaded

or twist- on metal caps

E. Provide fire dampers, combination fire and smoke dampers and smoke dampers at

locations as indicated on drawings. Install with required perimeter mounting angles,

sleeves, breakaway duct connections, corrosion resistant springs, bearings, bushings

and hinges

F. Install smoke dampers and combination smoke and fire dampers in accordance with

NFPA 92A

3.3. DEMONSTRATION

A. Demonstrate re-setting of fire dampers to Employer’s representative




SECTION 15830

AIR DISTRIBUTION EQUIPMENT (FANS)

PART 1 GENERAL

1.01 WORK INCLUDED

A. Centrifugal fans

B. Roof mounted fans

C. Duct mounted fans

D. Wall/window mounted fans

1.02 RELATED WORK

A. Section 15210 : Vibration Isolation

B. Section 15840 : Ductwork

C. Section 15860 : Duct Accessories

D. Section 15880 : Air Treatment Equipment (Filters)

F. Section 15990 : Testing Adjusting & Balancing of Environmental Systems


Conform to AMCA Bulletins regarding construction and testing. Fans shall

bear

AMCA certified rating seal.

1.04 REFERENCE STANDARDS

A. American National Standards Institute (ANSI).

B. Air Moving and Conditioning Association AMCA).

C. American Society of Heating, Refrigeration and Air Conditioning

Engineers (ASHRAE).

D. National Fire Protection Association

(NFPA). E Underwriters Laboratories (UL).



1.05 DESIGN CRITERIA

Contractor shall check the design duties of each fan and produce detailed

system pressure design calculations for each fan system for approval by the

Supervising Engineer, where the noise level shall be approved by the

engineer.

1.06 SUBMITTALS

A. Shop drawings in accordance with the appropriate specifications section

15011. B. Operating point plotted on curves.

C. Manufacturers' installation instructions.

D. Manufacturers' recommended spare parts and tools list. Operating and

maintenance data in accordance with the appropriate specifications section.

E. Certification of compliance for materials and

operation. F. Field tests.

PART 2 PRODUCTS

2.01 ACCEPTABLE MANUFACTURERS

A. The Contractor shall submit to the Supervising Engineer the names

of three manufacturers and their products which will be acceptable

under this Section. Approval of the manufacturer or product must be

obtained before proceeding with associated work.

B. Units shall be the product of a manufacturer regularly engaged in the

production of these units issuing complete catalog data for same.

C. Items of same function and performance are acceptable in conformance

with the appropriate specifications section.

2.02 GENERAL

A. The contractor shall supply and install where shown on the drawings,

fans as described hereinafter and of capacities indicated on the drawings.

B. The fan motors and starters shall be in accordance with the electrical

division of these specifications.

C. All Fans units shall comply with the maximum sound power levels laid.

D. All externally located fan units shall be of a completely weatherproofed type.



E. All fan units to be connected to the fire alarm station system shall have

electric control panel in accordance with the electrical divisions of the

specifications

F. Equivalent fan selections shall not decrease motor horsepower (wattage),

increase noise level, increase top speed by more than 10%, or increase

inlet air velocity by more than 20%, from that specified.

G. Fan performance based on sea level conditions.

H. Control unit with on-off switch for all fans provides manual/automatic

selection and test purpose.

I. Fans isolator for maintenance purposes shall be installed inside the fan housing.

2.03 SELECTION AND BALANCING

A. Provide fans capable of accommodating static pressure variations of plus or

minus

10%.

B. Provide balanced variable sheaves for motors to provide not less than 20

percent speed variation.

C. Statically and dynamically balanced fans to eliminate vibration

or noise transmission to occupied areas of the building.

D. Provide belt guards on belt driven fans.

E. Provide external louver where inlet or outlet is exposed.

2.04 PAINTING

All painting shall be in accordance with the relevant specifications section

and the following:

A. Prime coat fan wheels and housing at factory inside and outside. Prime

coating on aluminum parts is not required.

B. All ferrous parts to have one coat of chlorinated rubber primer, followed

by two top coats of weather resistant baked enamel.

2.05 CENTRIFUGAL ACOUSTIC IN-LINE FANS

A. It shall employ a compact, centrifugal acoustic in-line fan with a

guaranteed performance for fresh air systems with a significant static

pressure requirement.



B. Direct drive motors to be isolated from the air stream>

C. Centrifugal wheels shall be aluminum non-overloading, back worldly inclined,

and dynamically balanced.

D. Motors shall be rated or continuous running in ambient temperatures of up

to 50°C.

E. Aluminum anti-back draught shutters shall be fitted as standard, being

opened by air movement and closed by stainless steel springs and synthetic

rubber buffers shall be provided to ensure quiet operation.

F. Impellers shall be high efficiency, backward curved centrifugal.

G. Motor specification:

1. Totally enclosed motors, three phase, Metric sized, ball

bearing, squirrel cage induction type, for direct on line starting.

All have class F insulation. Ratings comply generally with BS

5000: Pt 99 and IEC 34-1, with degree of protection IP 55 to

IEC 34-5.

2. Flameproof Motors: Units supplied with flameproof motors.

3. Motor speed shall not exceed 1450 RPM.

H. Lubrication: Motor bearings shall be pre lubricated with high quality

grease. In ambient temperatures up to 50°C.

I. It shall have the following accessories:

1. Inlet and Bird Guards

2. Safety disconnect switch.

3. Back draft dampers.

4. Variable inlet vent.

5. Inlet rings.

6. Support channels.

7. Vibration isolators & hangers.

8. Speed controller.

9. Fire Stand switch.

2.06 DUCT MOUNTED AXIAL, DIRECT DRIVE FAN

A. Motors:

1. It shall be constructed from aluminum as standard with special “T”

slot and pad mounted fixings. Suitable for horizontal through

to vertical shaft operation.



2. Supplied IP 55, with removable drain plugs.

2.06 DUCT MOUNTED AXIAL, DIRECT DRIVE FAN (cont’d)

3. Bearings lubricated with wide temperature range

grease, re lubricatatbel or sealed for life depending

on size.

4. Continuous operating range -40°C to +50°C and

+200°C for fans serving kitchen hoods.

5. Insulation class F as standard.

6. Motor speed shall not exceed 1450

RPM. B. Impellers:

1. Impellers shall have a unique aerodynamic section blade to

optimize the efficiency of performance and minimize the generation

of noise.

2. It shall have high pressure die cast aluminum hub and clamp-

plate, with equally spaces, fully adjustable, high pressure die cast

aerofoil section blades.

3. It shall have a no overloading characteristic; the peak power

input occurs within the range of normal operating pressures and is

always exceeded by the motor rating.

4. It shall be reversed for emergency use. Reversal shall be

obtained by interchanging electrical connections.

C. It shall have the following:

1. Motor and Impeller side guards inter.

2. Choice of auto-transformer or electronic speed controllers.

3. 2 speed switch for Delta/Star reconnection.

4. Mounting Feet for both horizontal and vertical operation.

5. Matching Flanges.

6. Flexible Connectors.

7. Air Operated Dampers.

8. Bell mouth inlets.

9. Vibration Isolators.

10. Fan casings, motor mounting arms, mounting feet, matching

flanges and guards are all hot dipped galvanized after

manufacture.

2.07 MOTORS AND MOTOR STARTERS



A. Provide fan motors. Motors shall be squirrel cage induction type, totally

enclosed with speed not exceed 1800 R.P.M. unless otherwise stated.

B. Motor starters shall be provided under electrical section and installed in

relevant motor control center.

C. Refer to relevant electrical specification.

PART 3 EXECUTION

3.01 INSTALLATION

A. Supply and install sheaves as necessary for final air balancing.

B. Provide acoustic insulation on duct to below roof line and on fan inlet

plenum, and drip pan for collecting condensation.

C. Provide sound Attenuators or sound attenuating roof curb, as

indicated and to prevent noise break in to occupied spaces. Noise criteria

in occupied spaces shall not exceed specified design levels.

3.02 ELECTRICAL CONNECTIONS

A. Connect all fans to a motor control center and as indicated in wiring

diagrams.

B. All control, instrumentation and power wiring shall be part of electrical

works and shall be in accordance with the relevant electrical specifications.

3.03 CLEANING

A. Do not operate fans for any purpose, temporary or permanent until all duct

work is clean, filters in place, bearing lubricated and fan has been run under

observation.

3.04 TESTING AND BALANCING

All fields testing and balancing shall conform to Section 15990.

3.05 OPERATING AND MAINTENANCE DATA

Operating and maintenance data shall be supplied in conformance

with the appropriated specification.

END OF SECTION



SECTION 15870

AIR OUTLETS

PART 1 - GENERAL

1.1. SCOPE OF WORK

A. Side wall registers

B. Liner diffusers

C. Square ceiling diffusers

D. Supply ceiling diffusers

E. Return ceiling grilles and exhaust

F. Fresh air grilles with filter

G. Supply architectural ceiling diffuser grilles

H. Return architectural ceiling diffusers

I. Door / transfer grilles

J. Outside louvers

K. Roof hoods

L. Goosenecks

1.2. RELATED WORK

A. Section 15840 Ductwork

B. Section 15860 Duct Accessories

C. Section 15990 Testing, Adjusting, and Balancing of

Environmental Systems

D. Section 15880 Filters

1.3. QUALITY ASSURANCE

A. Make air flow tests and sound level measurements in accordance with applicable

Air Diffusion Council equipment test codes and ASHRAE standards

B. Manufacturer shall certify catalogue performance and ensure correct application of

air outlet types



1.4. QUALITY ASSURANCE

ASNI American National Standards Institute

ARI Air-conditioning and Refrigeration Institute

ADDC Air Diffusion Council

AMCA Air Moving and Conditioning Association

ASHRAE American Society of Heating, Refrigerating

and Air Conditioning Engineers

AABC Associated Air Balance Council

SMACNCA Metal and Air Conditioning Contractors' National

Association, Inc.

1.5. SUBMITTALS

A. Submit Manufacturer's installation instructions

B. Manufacturers recommended spare parts and tools list, operating and maintenance

data

C. Certificate of compliance for materials and operation

D. Field tests

1.6. JOB CONDITIONS

A. Review requirements of outlets as to size, finish, and type of mounting prior

to submitting shop drawings and schedules of outlets

B. Check location of outlets and make necessary adjustments in position to conform

with architectural features, symmetry, and lighting arrangement

PART 2 - PRODUCTS

2.1. ACCEPTABLE MANUFACTURERS

A. The Contractor shall submit to the Supervising Engineer the names of three

manufacturers and their products which will be acceptable under this Section.

Approval of the manufacturer or product must be obtained before proceeding with

associated work

B. Units shall be product of a Manufacturer regularly engaged in the production of

these units issuing complete engineering catalogue manual data of same



2.2. APPLICATION

A. Before being ordered, selection of all supply outlets shall be checked by the

manufacturer for throw pressure, drop and sound noise level and mounting height,

face velocity indicated on the drawings, all outlets shall be specially selected for

their particular application and designed for quiet operation, selections to be

approved by the architects

B. All air outlet shall be constructed from extruded aluminum sections, and shall have

a powder coated finish to match the false ceiling, color of finish shall be to the

approval of the architects

C. Rate units in accordance with Air Diffusion Council standards

D. Base air outlet application on room noise level as indicated in design conditions

and Section 15000

E. Provide supply aluminum outlets with sponge rubber seal around edge

F. Provide baffles to direct air away from walls, columns, or other obstructions within

radius of diffuser operation

G. Provide plaster frame for diffusers located in plaster surfaces

H. Provide anti-smudge frames or plaques on diffusers located in rough textured

surfaces such as an acoustical plaster

I. Distribute specified quantity of air evenly without drafts, air movement faster than

0.25 m/s or dead zones. Mix room air with primary by induction to provide

equalization of room temperature without stratification

2.3. SIDE WALL REGISTERS (SUPPLY, RETURN AND EXHAUST)

A. For sidewall registers provide streamlined and individually adjustable blades, depth

of which exceeds 19 mm maximum spacing. Provide spring tension or other device

to set blades

B. Heavy gauge, extruded aluminum, anodized finish construction frame, with rigid

corner clips fasteners to ensure greater strength and higher rigid smooth fitting

corner

C. Provide supply registers with integral, gang-operated opposed blade dampers with

removable key operator, operable from face, and shall be of the double deflection

type, having vertical front bars and horizontal back bars

D. Provide return exhaust register as supply register but with single deflection type

E. Side wall registers to be push fit



2.4. LINEAR DIFFUSERS (SUPPLY AND RETURN)

A. Provide linear supply diffusers of adjustable pattern slot type with fully adjustable

deflection blades, number of slots as indicated on drawings

B. Diffuser face shall be free of fasteners or screws

C. Supply linear diffusers shall be provided with factory assembled plenum boxes with

opposed blade dumpers

D. Fabricate of aluminum extrusions with powder coated finish to match with the false

ceiling colour

E. On multi-slot units the air pattern from each slot shall be adjusted individually from

the face of the diffuser

F. Diffusers located in plaster ceilings shall be provided with separate plaster stop

mounting frame

G. Alignment clips shall be provided so that continuous sections shall appear to be one

piece

H. Diffusers to be push fit

2.5. SQUARE DIFFUSERS (SUPPLY AND RETURN)

A. Provide square rectangular, adjustable or fixed flow pattern, stamped, multi-core

type diffuser to discharge air in 360 degrees pattern with sector zing baffles where

indicated or required

B. Diffusers shall have surface mount or snap-in or inverted T-bar or spine type frame

to suit ceiling

C. Fabricate of aluminum extrusions with powder coated finish to match with the false

ceiling colour

D. Provide radial opposed blade damper and multi-louvered equalizing grid with

damper adjustable from diffuser face for supply diffuser only

E. Diffuser mounting system shall be compatible with the ceiling system provided

F. Volume controls supply diffuser outlets shall be accessible through the outlets from

below the ceiling and shall maintain their setting when adjusted

G. Diffusers to be push fit

2.6. SUPPLY CEILING GRILLES

A. Extruded aluminum construction of double deflection type with opposed blades

dampers, front blades vertical and rear blades horizontal and fitted with key



operated opposed blade dampers gaskets to be fitted

2.7. SUPPLY CEILING GRILLES

A. Same as supply air grilles but of single deflection type with opposed blade damper

and exhaust air grilles without approved blade damper

2.8. FRESH AIR GRILLE WITH FILTER AND DAMPER

A. The Same as supply ceiling grilles but of single deflection type volume control

damper and filter 25 mm thick

2.9. FRESH AIR GRILLE WITH FILTER AND DAMPER

A. Supply ceiling diffuser shall be square, architectural, panel faced

B. Diffusers sizes and mounting types and outlets shall be as shown on drawings

C. No. of slots and slot width shall be as shown on drawings

D. Diffusers shall be compatible with 24” X 24” modules for lay-in T-bar ceiling

E. Diffusers shall be field adjustable for vertical, 1-way, 2-way, 3-way and 4-way

discharge patterns

F. Each supply slot of the diffuser shall be provided with a two – elements

aerodynamically curved, “ice-tong” shaped steel deflector capable of 180º pattern

adjustment from the face of the diffuser and shall allow volume damper of supply

air for final balancing. All adjustments shall be accessible from the face of the

diffuser

G. The diffuser shall made of extruded aluminum and factory fabricated 22 gauge steel

back pan

H. The diffuser shall have the capacity to insert a ceiling tile into the center of the

diffuser to match the ceiling system

I. The ceiling tile will be provided by the ceiling system contractor

J. The back pan shall be movable and shall include side handles

K. The diffuser inlet shall be located on the top o the back pan and shall have a

minimum of 1 1/8” depth available for flexible duct connection

L. Damper shall be constructed of heavy gauge steel

M. The diffuser finish (colour) shall be selected by supervising engineer coordinated

with interior engineer

N. Pattern controllers shall be black



O. The finish shall be an anodic acrylic paint, baked at 315 ºF for 30 minutes

P. The paint must pass a 100 hour ASTM D117 Corrosive Environments Salt Spray

Test without creep age, blistering, or deterioration of film

Q. The paint must pass a 250 hour ASTM – 870 Water Immersion Test. The paint

must also pass the ASTM D-2794 Reverse Impact Cracking Test with a 50 inch

pound force applied

R. The manufacturer shall provide published performance data for the architectural

diffuser

S. The test data shall include static pressure drop, horizontal air throw pattern, and NC

T. The diffuser shall be tested in accordance with ANSI / ASHRAE standard 70 –

1991

U. Center panel of diffusers shall match surrounding ceiling tiles

V. Uniform, unbroken flow pattern guards against ceiling smudging to be provided

W. Discharge pattern to be individually adjustable for each slot

X. Pattern controller shall be provided for each slot to control the direction of flow and

volume, and discharge directions to be adjustable 180º

2.10. RETURN ARCHITECTURAL CEILING DIFFUSERS

A. Return ceiling diffusers shall be square, architectural, panel faced of the sizes as

shown on the drawings

B. The face of the return diffuser shall match the supply diffuser

C. Diffusers slot width and No. of slot to be as shown on drawings

D. Diffuser shall be computable with 24” X 24” modules for lay-in T – bar ceiling

E. Return diffuser shall made of extruded aluminum and factory fabricated 22 gauge

light shield

F. The diffuser shall have the capacity to insert a ceiling tile into the center of the

diffuser to match the ceiling system

G. The ceiling tile will be provided by the ceiling system contractor

H. The light shield shall be removable

I. The diffuser finish (colour) shall be selected by supervising engineer coordinated

with interior engineer



J. The finish shall be an anodic acrylic paint, baked at 315 ºF for 30 minutes

K. The paint must pass a 100 hour ASTM D117 Corrosive Environments Salt Spray

Test without and creep age, blistering, or deterioration of film

L. The paint must pass a 250 hour ASTM – 870 Water Immersion Test

M. The paint must also pass the ASTM D – 2794 Reverse Impact Cracking Test with a

50 inch pound force applied

N. The test data shall include negative static pressure drop and NC

O. The diffuser shall be tested in accordance with ANSI / ASHRAE standard 70-1991

2.11. OUTSIDE LOUVERS

A. Louvers 100 mm deep with blades on 45 degrees slope heavy channel frame, bird

screen with 12mm square mesh for exhaust and 19mm for intake. Intake must be

provided with sand trap louver

B. Fabricate of 12 gauge (2.50 mm) extruded aluminum and provide welded assembly

C. Finish in factory color anodized finish

2.12. ROOF HOODS

A. For air inlet or exhaust hoods provide removable hood, curb flange and bird screen

with 12 mm square mesh for exhaust and 19 mm and sand trap Louver for intake

B. Fabricate of galvanized steel, minimum 16 gage (1.50 mm) base and 20 gage (0.90

mm) hood or aluminum minimum 16 gage (1.50 mm) and 18 gage (1.20 mm) hood.

Provide suitable reinforcing to hood

C. Mount unit on minimum 305 mm high curb base with insulation between duct and

curb

D. Finish in factory prime coat finish

E. Make hood outlet area minimum of twice throat area

2.13. GOOSENECKS

A. Fabricate goosenecks of minimum 18 gage (1.20 mm) galvanized steel

B. Mount on minimum 305 mm high curb base where size exceeds 229 mm x 229 mm

PART 3 - EXECUTION

3.1. INSTALLATION



A. Install items in accordance with Manufacturers' printed instructions

B. Paint ductwork visible behind air outlets Matt black

3.2. CLEANING

A. All cleaning shall conform to architectural and structural specification

3.3. TESTING & BALANCING

A. All field testing and balancing shall conform to Section 15950

3.4. OPERATING AND MAINTENANCE DATA

A. Operating and Maintenance data shall be supplied in conformance with

architectural and structural specification




SECTION 15950 TESTING, ADJUSTING AND BALANCING


A. Sectio

n

Includes: 1. Testing, adjusting and balancing of air systems.

2. Testing adjusting, and balancing of hydronic and refrigerating systems. 3. Measurement of final operating condition of HVAC systems.

4. Sound measurement of equipment operating conditions.

5. Vibration measurement of equipment operating conditions.

B. Related Sections: 1. Section 15905 – Controls and Instrumentation: Requirements for

coordination between control system and testing, adjusting, and balancing work.

2. Section 15940 - Sequence of Operation: Sequences of operation for HVAC equipment.

1.2 REFERENCES

A. Associated Air Balance Council:

1. AABC MN-1 - National Standards for Testing and Balancing Heating, Ventilating, and Air Conditioning Systems.

B. American Society of Heating, Refrigerating and Air-Conditioning Engineers:

1. ASHRAE 111 - Practices for Measurement, Testing, Adjusting and

Balancing of Building Heating, Ventilation, Air-Conditioning and

Refrigeration Systems.

C. Natural Environmental Balancing Bureau:

1. NEBB - Procedural Standards for Testing, Adjusting, and

Balancing of Environmental Systems. 1.3 SUBMITTALS

A. Prior to commencing Work, submit proof of latest calibration date of each

instrument.

B. Test Reports: Indicate data on AABC MN-1 National Standards for

Total System Balance forms prepared following ASHRAE 111 NEBB Report

forms containing information indicated in Schedules. Submit data in S.I. units.

C. Field Reports: Indicate deficiencies preventing proper testing, adjusting, and balancing of systems and equipment to achieve specified performance.

D. Prior to commencing Work, submit report forms or outlines indicating

adjusting, balancing, and equipment data required. Include detailed

procedures, agenda, sample



report forms and copy of AABC National Project Performance Guaranty and

Copy of

NEBB Certificate of Conformance Certification.

E. Submit draft copies of report for review prior to final acceptance of Project.

F. Furnish reports in soft cover, letter size, binder manuals, complete with table of

contents page and indexing tabs, with cover identification at front and side.

Include set of reduced drawings with air outlets and equipment identified to

correspond with data sheets, and indicating thermostat locations. 1.4 CLOSEOUT SUBMITTALS

A. Project Record Documents: Record actual locations of flow measuring stations

balancing valves and rough setting.

B. Operation and Maintenance Data: Furnish final copy of testing, adjusting, and

balancing report inclusion in operating and maintenance manuals. 1.5 QUALITY ASSURANCE

A. Perform Work in accordance with AABC MN-1 National Standards for

Field Measurement and Instrumentation, Total System Balance ASHRAE

111 NEBB Procedural Standards for Testing, Balancing and Adjusting of

Environmental Systems.

B. Maintain one copy of each document on site.

C. Prior to commencing Work, calibrate each instrument to be used. Upon

completing

Work, recalibrate each instrument to assure reliability. 1.6 QUALIFICATIONS

Agency: Qualified engineer specializing in testing, adjusting, and balancing of systems specified in this section with minimum three years documented experience approved by the Engineer.

1.7 SEQUENCING

A. Sequence balancing between completion of systems tested and Date of

Substantial Completion.


A. Verify systems are complete and operable before commencing work.

Verify the following: 1. Systems are started and operating in safe and normal condition. 2. Temperature control systems are installed complete and operable.



3. Proper thermal overload protection is in place for electrical equipment.

4. Final filters are clean and in place. If required, install temporary

media in addition to final filters. 5. Duct systems are clean of debris. 6. Fans are rotating correctly. 7. Fire and volume dampers are in place and open. 8. Air coil fins are cleaned and combed. 9. Access doors are closed and duct end caps are in place. 10. Air outlets are installed and connected. 11. Duct system leakage is minimized. 12. Hydronic systems are flushed, filled, and vented. 13. Pumps are rotating correctly. 14. Proper strainer baskets are clean and in place or in normal position. 15. Service and balancing valves are open.

2.2 PREPARATION

A. Furnish instruments required for testing, adjusting, and balancing operations.

B. Make instruments available to Engineer to facilitate spot checks during testing.

2.3 INSTALLATION TOLERANCES

A. Air Handling Systems: Adjust to within plus or minus 5 percent of design.

B. Air Outlets and Inlets: Adjust total to within plus 10 percent and minus 5

percent of design to space.

C. Hydronic Systems: Adjust to within plus or minus 5 percent of design. 2.4 ADJUSTING

A. Verify recorded data represents actual measured or observed conditions.

B. Permanently mark settings of valves, dampers, and other adjustment devices

allowing settings to be restored. Set and lock memory stops.

C. After adjustment, take measurements to verify balance has not been disrupted. If disrupted, verify correcting adjustments have been made.

D. Report defects and deficiencies noted during performance of services, preventing

system balance.

E. Leave systems in proper working order, replacing belt guards, closing access

doors, closing doors to electrical switch boxes, and restoring thermostats to

specified settings.

F. At final inspection, recheck random selections of data recorded in report. Recheck points or areas as selected and witnessed by Owner.



G. Check and adjust systems approximately six months after final acceptance

and submit report. 2.5 AIR SYSTEM PROCEDURE

A. Adjust air handling and distribution systems to obtain required or design

supply, return, and exhaust air quantities at site altitude.

B. Make air quantity measurements in main ducts by Pitot tube traverse of

entire cross sectional area of duct.

C. Measure air quantities at air inlets and outlets.

D. Adjust distribution system to obtain uniform space temperatures free from objectionable drafts.

E. Use volume control devices to regulate air quantities only to extent

adjustments do not create objectionable air motion or sound levels. Effect

volume control by using volume dampers located in ducts.

F. Vary total system air quantities by adjustment of fan speeds. Provide sheave drive changes to vary fan speed. Vary branch air quantities by damper regulation.

G. Provide system schematic with required and actual air quantities recorded at

each outlet or inlet.

H. Measure static air pressure conditions on air supply units, including filter

and coil pressure drops, and total pressure across fan. Make allowances for 50

percent loading of filters.

I. Adjust outside air automatic dampers, outside air, return air, and exhaust dampers for design conditions.

J. Measure temperature conditions across outside air, return air, and exhaust

dampers to check leakage.

K. At modulating damper locations, take measurements and balance at extreme

conditions.

L. Measure building static pressure and adjust supply, return, and exhaust air

systems to obtain t h e required relationship between each to maintain

approximately 12.5 Pa positive static pressure near building entries.

2.6 WATER SYSTEM PROCEDURE

A. Adjust water systems to obtain design quantities.

B. Use calibrated Venturi tubes, orifices, or other metered fittings and pressure



gauges to determine flow rates for system balance. Where flow-metering devices are not installed, base flow balance on temperature difference across various heat transfer elements in system.

C. Adjust systems to obtain specified pressure drops and flows through

heat transfer elements prior to thermal testing. Perform balancing by

measurement of temperature differential in conjunction with air balancing.

D. Effect system balance with automatic control valves fully open or in normal

position to heat transfer elements.

E. Effect adjustment of water distribution systems by means of balancing cocks,

valves, and fittings. Do not use service or shut-off valves for balancing unless

indexed for balance point. 2.7 SCHEDULES

A. Equipment Requiring Testing, Adjusting, and Balancing:

1. Fire Pumps. 2. Plumbing Pumps. 3. HVAC Pumps. 4. Boilers. 5. Variable refrigerant volume system 6. Split units 7. Fans. 8. Air Inlets and Outlets. 9. Noise Level Data.

B. Report Forms

1. Title Page: a. Name of Testing, Adjusting, and Balancing Agency b. Address of Testing, Adjusting, and Balancing Agency c. Telephone and facsimile numbers of Testing, Adjusting, and

Balancing Agency d. Project name e. Project location f. Project Architect g. Project Engineer h. Project Contractor i. Project altitude j. Report date

2. Summary Comments: a. Design versus final performance b. Notable characteristics of system c. Description of systems operation sequence d. Summary of outdoor and exhaust flows to indicate

building pressurization e. Nomenclature used throughout report f. Test conditions



3. Instrument List:

a. Instrument b. Manufacturer c. Model number d. Serial number e. Range f. Calibration date

4. Electric Motors: a. Manufacturer b. Model/Frame c. HP/BHP and kW d. Phase, voltage, amperage; nameplate, actual, no load e. RPM f. Service factor g. Starter size, rating, heater elements h. Sheave Make/Size/Bore

5. V-Belt Drive: a. Identification/location b. Required driven RPM c. Driven sheave, diameter and RPM d. Belt, size and quantity e. Motor sheave diameter and RPM f. Center to center distance, maximum, minimum, and actual

6. Pump Data: a. Identification/number b. Manufacturer c. Size/model d. Impeller e. Service f. Design flow rate, pressure drop, BHP and kW g. Actual flow rate, pressure drop, BHP and kW h. Discharge pressure i. Suction pressure j. Total operating head pressure k. Shut off, discharge and suction pressures l. Shut off, total head pressure

7. Combustion Test: a. Manufacturer b. Model number c. Serial number d. Firing rate e. Overfire draft f. Gas meter timing dial size g. Gas meter time per revolution h. Gas pressure at meter outlet i. Gas flow rate j. Heat input k. Burner manifold gas pressure



l. Percent carbon monoxide (CO)

m. Percent carbon dioxide (CO2) n. Percent oxygen (O2) o. Percent excess air p. Flue gas temperature at outlet q. Ambient temperature r. Net stack temperature s. Percent stack loss t. Percent combustion efficiency u. Heat output

8. VRV: a. Identification/number

b. Manufacturer

c. Capacity

d. Model number

e. Serial number

f. Evaporator entering water temperature, design and actual g. Evaporator leaving water temperature, design and actual h. Evaporator pressure drop, design and actual

i. Evaporator water flow rate, design and actual 9. Cooling and heating Coil Data:

a. Identification/number b. Location c. Service d. Manufacturer e. Air flow, design and actual f. Entering air DB temperature, design and actual g. Entering air WB temperature, design and actual h. Leaving air DB temperature, design and actual i. Leaving air WB temperature, design and actual j. Air pressure drop, design and actual

10. Air Moving Equipment: a. Location b. Manufacturer

c. Model number

d. Serial number e. Arrangement/Class/Discharge f. Air flow, specified and actual g. Return air flow, specified and actual h. Outside air flow, specified and actual i. Total static pressure (total external), specified and actual j. Inlet pressure k. Discharge pressure l. Sheave Make/Size/Bore m. Number of Belts/Make/Size n. Fan RPM

11. Return Air/Outside Air Data: a. Identification/location



b. Design air flow

c. Actual air flow d. Design return air flow e. Actual return air flow f. Design outside air flow g. Actual outside air flow h. Return air temperature i. Outside air temperature j. Required mixed air temperature k. Actual mixed air temperature l. Design outside/return air ratio m. Actual outside/return air ratio

12. Exhaust Fan Data: a. Location b. Manufacturer c. Model number d. Serial number e. Air flow, specified and actual f. Total static pressure (total external), specified and actual g. Inlet pressure h. Discharge pressure i. Sheave Make/Size/Bore j. Number of Belts/Make/Size k. Fan RPM

13. Duct Traverse: a. System zone/branch b. Duct size c. Area d. Design velocity

e. Design air flow

f. Test velocity g. Test air flow h. Duct static pressure i. Air temperature j. Air correction factor

14. Duct Leak Test: a. Description of ductwork under test b. Duct design operating pressure c. Duct design test static pressure d. Duct capacity, air flow e. Maximum allowable leakage duct capacity times leak factor f. Test apparatus

1) Blower 2) Orifice, tube size 3) Orifice size 4) Calibrated

g. Test static pressure h. Test orifice differential pressure



i. Leakage

15. Air Monitoring Station Data: a. Identification/location b. System c. Size d. Area e. Design velocity

f. Design air flow

g. Test velocity h. Test air flow

16. Flow Measuring Station: a. Identification/number b. Location c. Size d. Manufacturer e. Model number f. Serial number g. Design Flow rate h. Design pressure drop i. Actual/final pressure drop j. Actual/final flow rate k. Station calibrated setting

17. Air Distribution Test Sheet: a. Air terminal number b. Room number/location c. Terminal type d. Terminal size e. Area factor f. Design velocity g. Design air flow h. Test (final) velocity i. Test (final) air flow j. Percent of design air flow

18. Sound Level Report: a. Location b. Octave bands - equipment off c. Octave bands - equipment on d. NC level - equipment on

19. Vibration Test: a. Location of points:

1) Fan bearing, drive end 2) Fan bearing, opposite end 3) Motor bearing, center (when applicable) 4) Motor bearing, drive end 5) Motor bearing, opposite end 6) Casing (bottom or top) 7) Casing (side) 8) Duct after flexible connection (discharge)

9) Duct after flexible connection (suction)

b. Test readings: 1) Horizontal, velocity and displacement 2) Vertical, velocity and displacement



3) Axial, velocity and displacement c. Normally acceptable readings, velocity and acceleration d. Unusual conditions at time of test e. Vibration source (when non-complying)

END OF SECTION



SECTION 15992 MECHANICAL COMMISSIONING



1. Commissioning description. 2. Commissioning responsibilities.

B. Related Sections:

1. Section 15820 - Duct Accessories: Product requirements for ductwork test holes. 2. Section 15905 - HVAC Instrumentation: Submittal and training

requirements. 3. Section 15940 – Sequence of operation: Submittal, training, and

programming requirements. 4. Section 15950 - Testing, Adjusting, and Balancing: For requirements and procedures concerning testing, adjusting, and balancing of mechanical systems. 5. Plumbing systems.

1.2 REFERENCES

A. Associated Air Balance Council:

1. AABC - AABC Commissioning Guideline.

B. American Society of Heating, Refrigerating and Air-Conditioning Engineers: 1. ASHRAE Guideline 1 - The HVAC Commissioning Process.

C. National Environmental Balancing Bureau:

1. NEBB - Procedural Standards for Building Systems Commissioning. 1.3 COMMISSIONING DESCRIPTION

A. HVAC commissioning process includes the following tasks:

1. Testing and startup of HVAC equipment and systems. 2. Equipment and system verification checks. 3. Assistance in functional performance testing to verify testing and

balancing, and equipment and system performance. 4. Provide qualified personnel to assist in commissioning tests, including

seasonal testing. 5. Complete and endorse functional performance test checklists provided by Commissioning Authority to assure equipment and systems are fully operational and ready for functional performance testing. 6. Provide equipment, materials, and labor necessary to correct

deficiencies found during commissioning process to fulfill contract and warranty requirements.



7. Provide operation and maintenance information and record

drawings to Commissioning Authority for review verification and

organization, prior to distribution. 8. Provide assistance to Commissioning Authority to develop, edit, and

document system operation descriptions. 9. Provide training for systems specified in this Section with coordination by Commissioning Authority.

B. Equipment and Systems to Be Commissioned: 1. Chiller heat pump 2. Pumps. 3. Piping systems. 4. Ductwork. 5. Split system air conditioning units. 6. Fans. 7. Fire dampers. 8. Indoor air quality. 9. Equipment sound control. 10. Equipment vibration control. 11. Kitchen hood exhaust systems.(not include in our project)

12. Solar water heating system.(not include in our project)

13. Automatic temperature control system. .(not include in our project)

14. Testing, Adjusting and Balancing work. 1.4 COMMISSIONING SUBMITTALS

A. Draft Forms: Submit draft of system verification form and functional

performance test checklist.

B. Test Reports: Indicate data on system verification form for each piece of

equipment and system as specified. Use AABC forms as guidelines. Submit

data in metric units.

C. Field Reports: Indicate deficiencies preventing completion of equipment

or system verification checks equipment or system to achieve specified

performance. 1.5 CLOSEOUT SUBMITTALS

A. Project Record Documents: Record revisions to equipment and system

documentation necessitated by commissioning.

B. Operation and Maintenance Data: Submit revisions to operation and

maintenance manuals when necessary revisions are discovered during

commissioning. 1.6 QUALITY ASSURANCE

A. Perform Work in accordance with AABC, ASHRAE Guideline 1 or NEBB.

B. Maintain two copies of each document on site.



1.7 COMMISSIONING RESPONSIBILITIES

A. Equipment or System Installer Commissioning Responsibilities: 1. Attend commissioning meetings. 2. Ensure temperature controls installer performs assigned

commissioning responsibilities as specified below. 3. Ensure testing, adjusting, and balancing agency performs assigned

commissioning responsibilities as specified. 4. Provide instructions and demonstrations for Owner's personnel. 5. Ensure subcontractors perform assigned commissioning responsibilities. 6. Ensure participation of equipment manufacturers in appropriate startup,

testing, and training activities when required by individual equipment specifications.

7. Develop startup and initial checkout plan using manufacturer’s startup procedures and functional performance checklists for equipment and systems to be commissioned.

8. During verification check and startup process, execute HVAC related portions of checklists for equipment and systems to be commissioned.

9. Perform and document completed startup and system operational checkout procedures, providing copy to Commissioning Authority.

10. Provide manufacturer’s representatives to execute starting of equipment. Ensure representatives are available and present during agreed upon schedules and are in attendance for duration to complete tests, adjustments and problem-solving.

11. Coordinate with equipment manufacturers to determine specific requirements to maintain validity of warranties.

12. Provide personnel to assist Commissioning Authority during equipment or system verification checks and functional performance tests.

13. Prior to functional performance tests, review test procedures to ensure feasibility, safety and equipment protection and provide necessary written alarm limits to be used during tests. 14. Prior to startup, inspect, check, and verify correct and complete

installation of equipment and system components for verification checks included in commissioning plan. When deficient or incomplete work is discovered, ensure corrective action is taken and re-check until equipment or system is ready for startup.

15. Provide factory supervised startup services for equipment and systems.

Coordinate work with manufacturer and Commissioning Authority. 16. Perform verification checks and startup on equipment and systems as specified. 17. Assist Commissioning Authority in performing functional performance

tests on equipment and systems as specified. 18. Perform operation and maintenance training sessions scheduled by

Commissioning Authority. 19. Conduct HVAC system orientation and inspection.

B. Temperature Controls Installer Commissioning Responsibilities:

1. Attend commissioning meetings. 2. Review design for ability of systems to be controlled including the

following: a. Confirm proper hardware requirements exists to perform



functional performance testing.

b. Confirm proper safeties and interlocks are included in design. c. Confirm proper sizing of system control valves and actuators and

control valve operation will result capacity control identified in Contract Documents.

d. Confirm proper sizing of system control dampers and actuators and damper operation will result in proper damper positioning.

e. Confirm sensors selected are within device ranges. f. Review sequences of operation and obtain clarification from engineer. g. Provide written sequences of operation for packaged

controlled equipment. Equipment manufacturers’ stock sequences may be included, when accompanied by additional narrative to reflect Project conditions.

3. Inspect, check, and confirm proper operation and performance of control hardware and software provided in other Division 15 sections.

4. Submit proposed procedures for performing automatic temperature control system point-to-point checks to Commissioning Authority and engineer. 5. Inspect check and confirm correct installation and operation of

automatic temperature control system input and output device operation through point-to- point checks.

6. Perform training sessions to instruct Owner's personnel in hardware operation, software operation, programming, and application in accordance with commissioning plan and requirements of Section 15905, 15910, 15940 and 15950.

7. Demonstrate system performance and operation to Commissioning Authority during functional performance tests including each mode of operation.

8. Provide control system technician to assist during Commissioning Authority

verification check and functional performance testing. 9. Provide control system technician to assist testing, adjusting, and

balancing agency during performance of testing, adjusting, and balancing work.

10. Assist in performing operation and maintenance training sessions scheduled by Commissioning Authority.

C. Testing, Adjusting, and Balancing Agency Commissioning Responsibilities:

1. Attend commissioning meetings. 2. Participate in verification of testing, adjusting, and balancing report

for verification or diagnostic purposes. Repeat sample of 10 percent of measurements contained in testing, adjusting, and balancing report as indicated in commissioning plan.

3. Assist in performing operation and maintenance training sessions

scheduled by Commissioning Authority.

1.8 SCHEDULING

A. Prepar

e

schedule indicating anticipated start dates for the

following: 1. Piping system pressure testing.



2. Piping system flushing and cleaning.

3. Ductwork cleaning.

4. Ductwork testing.

5. Equipment and system startups.

6. Automatic temperature control system checkout.

7. Testing, adjusting, and balancing.

8. HVAC system orientation and inspections. 9. Operation and maintenance manual submittals. 10. Training sessions.

B. Schedule seasonal tests of HVAC equipment and systems during peak weather

conditions to observe full-load performance.

C. Schedule occupancy sensitive tests of equipment and systems during conditions of both minimum and maximum occupancy and use.

1.9 COORDINATION

A. Notify Commissioning Authority minimum of four weeks in advance of the

following: 1. Scheduled equipment and system startups. 2. Scheduled automatic temperature control system checkout. 3. Scheduled start of testing, adjusting, and balancing work.

B. Coordinate programming of automatic temperature control system with

construction and commissioning schedules. PART 2 EXECUTION

2.1 INSTALLATION

A. Install additional balancing dampers, balancing valves, access doors, test

ports, and pressure and temperature taps required by commissioning plan.

B. Place HVAC systems and equipment into full operation and continue operation during each working day of commissioning.

C. Install replacement sheaves and belts to obtain system performance, as

requested by Commissioning Authority.

D. Install test holes in ductwork and plenums as requested by Commissioning

Authority for taking air measurements. Refer to Section 15820.

E. Prior to start of functional performance test, install replacement filters in

equipment. 2.2 COMMISSIONING

A. Seasonal Sensitive Functional Performance Tests:

1. Test heating equipment at winter design temperatures. 2. Test cooling equipment at summer design temperatures with fully



occupied building. 3. Participate in testing delayed beyond Final Completion to test

performance at peak seasonal conditions.

B. Be responsible to participate in initial and alternate peak season test of

systems required to demonstrate performance.

C. Occupancy Sensitive Functional Performance Tests: 1. Test equipment and systems affected by occupancy variations

at minimum and peak loads to observe system performance. 2. Participate in testing delayed beyond Final Completion to test performance with actual occupancy conditions.

END OF SECTION



SECTION 14215

ELECTRIC ELEVATOR

1. Part One

ELEVATOR DATA

1.Type: Passenger elevator (High & Basic school)

A. Capacity: not less 800 kg, not less than 10 Persons or manufacturer

recommendation

B. Floors: 3

C. Speed: not less than 1.6 m/s

D. Hoist away size: 24500 mm (W) x 2000 mm (D)

E. Floors names: G, F, and S or as per required by the owner

F. Control system:

i. Modern control

ii. Microprocessor

iii. Distributed inverter control

iv. Serial communication between the main boards of the elevator in

machine room and other electrical cards or equipments like outside

push buttons + indicators, COP, etc.

G. VVVF closed loop system must be built-in within control system and not

manufactured by a third-party

H. Control panels that depends on the central design will be rejected as well as

the control boards that VVVF system will be manufactured in another

company plant or not built completely in control panel

I. Operation: Full collective

J. Travel distance: 7500 mm approx.

K. Overhead: 4300 mm

L. Pit depth: 1,600 mm



1.7. ELEVATOR CAR

A. Entrances: 1

B. Car internal height: 2,200 mm (H)

C. Car internal dimension: According to EN code suitable for 10 passengers

D. Car door opening: 900 mm (W) x 2,100 mm (H)

E. Car door protection: Multi-photo cell (curtain)

F. Opening type: Central opening

G. Car door finish: Mirror stainless steel

H. Car flooring: Recessed to receive granite with thickness = 20 mm

I. Door operator: Heavy duty, VVVF DRIVE

J. Car walls: Etched mirror stainless steel

K. Car ventilation: 1 Electrical silent fan

L. Hand rail: Cylindrical stainless steel at back wall

M. Lighting: Fluorescent

N. Ceiling: Stainless steel mirror

1.8. CAR OPERATING PANEL

A. Full height mirror stainless steel

B. Push button for each served floor

C. Door open button

D. Door close button

E. Fan button

F. Emergency call button

G. Up and down direction arrows

H. Digital display position indicator

I. Interphone 3-way and alarm buzzer system

J. Overload and full indication signals



K. Instruction plate

L. Man machine function box including many operation device

M. Emergency car light

1.9. LANDING DOORS

A. GF floor: hairline stainless steel with narrow jamb

B. Typical floors: hairline stainless steel

1.10. HALL SIGNAL

A. Hall call button: Electromechanical, spot–LED type

B. Hall position indicator: At all floors, 7 segment, show direction and position,

full and out of service signals

C. Next departure arrows: At the floor

D. Maintenance box: At top of car containing up & down button, and

maintenance operation switch

1.11. MACHINERY

A. Machine:-traction, gearless motor (synchronous motor)

B. Drive: VVVF closed loop

C. Location: without machine room, or with machine room

D. Safety gear: progressive

E. Roping: 2: 1

F. Power supply: 380 V, 3–PHASE, 50 Hz

G. Lighting supply: 220 V, 1–PHASE. 50 Hz

H. Maintenance operating lamp and socket outlet

1.12. SERVICE FUNCTIONS

A. Safety drive operation: when a car stops between floors due to mechanical

malfunction (excluding interruption of electricity), the car descends to the

nearest floor below

B. Anti-nuisance operation: in case of substantial difference between the

number of calls registered on the car operating panel and actual load in the

elevator, the elevator prevents unnecessary operation by canceling all

registered calls when it arrives at the nearest floor



C. Automatic door open & close lime adjustment: Door open and close times

are automatically adjusted depending on whether the call is a hall call or a

car call to increase the operating efficiency

D. Car door safety edge: extending the full height of the car door, this device

causes the doors to return to the fully open position, should the door

encounter a person or obstacle car call

E. Micro leveling: an automatic two -way leveling device is provided to

maintain the elevator car level with the landing , regardless of elevator load

or direction reversal

F. Detection of jammed hall button and exclusion from operation service :. A

hall button jammed mechanically, the hall call will be automatically

bypassed after being served once, until the problem is resolved

G. Overload: Car load weighing Device to prevent an over loaded car from

starting, light and buzzer are provided. The buzzer remains sounding until

the over load condition decreases the door remains open during overload

H. Car call cancellation: If false calls are registered by mistake or abuse, the

weighting device will decide upon actual loading, answer first call and

cancel other calls automatically

I. Parking operation: elevators can be automatically parked at a preset time,

thus a void manual stopping and restarting

J. Emergency fire service: the elevator will automatically return to the lobby or

primary designed floor when fire detection devices (supplied by other) are

activated, allowing passenger to exist. The floor will remain parked at that

landing until the detection devices (supplied by others) are deactivated or

until the elevator is used by afire man using a special fire man service switch

or key

K. Door nudging: when the doors remain open for more than the fixed door

open time (approx. 20seconds) this feature closes the doors at reduced

closing speed with the buzzer sounding

L. Full load: sensor full rated load and does not respond to outside calls until

load is reduced

M. Intercom at 3–way: the passenger in the elevator room can communicate

with any person in machine or maintenance room

N. ALP: automatic evacuation of passenger when power or electricity is

interrupted

1.13. ADDITIONAL SAFETY DEVICES

A. Emergency cab lighting



B. Terminal and final limit switch

2. Part Two

ELEVATOR DATA

1.Type: Passenger elevator (Administration Building)

A. Capacity: not less 550 kg, not less than 7 Persons or manufacturer

recommendation

B. Floors: 3

M. Speed: not less than 1.6 m/s

N. Hoist away size: 1500 mm (W) x 1600 mm (D)

O. Floors names: G, F, and S or as per required by the owner

P. Control system:

v. Modern control

vi. Microprocessor

vii. Distributed inverter control

viii. Serial communication between the main boards of the elevator in

machine room and other electrical cards or equipments like outside

push buttons + indicators, COP, etc.

Q. VVVF closed loop system must be built-in within control system and not

manufactured by a third-party

R. Control panels that depends on the central design will be rejected as well as

the control boards that VVVF system will be manufactured in another

company plant or not built completely in control panel

S. Operation: Full collective

T. Travel distance: 7500 mm approx.

U. Overhead: 4220 mm

V. Pit depth: 1,600 mm



2.1. ELEVATOR CAR

O. Entrances: 1

P. Car internal height: 2,200 mm (H)

Q. Car internal dimension: According to EN code suitable for 7 passengers

R. Car door opening: 900 mm (W) x 2,100 mm (H)

S. Car door protection: Multi-photo cell (curtain)

T. Opening type: Central opening

U. Car door finish: Mirror stainless steel

V. Car flooring: Recessed to receive granite with thickness = 20 mm

W. Door operator: Heavy duty, VVVF DRIVE

X. Car walls: Etched mirror stainless steel

Y. Car ventilation: 1 Electrical silent fan

Z. Hand rail: Cylindrical stainless steel at back wall

AA. Lighting: Fluorescent

BB. Ceiling: Stainless steel mirror

2.2. CAR OPERATING PANEL

N. Full height mirror stainless steel

O. Push button for each served floor

P. Door open button

Q. Door close button

R. Fan button

S. Emergency call button

T. Up and down direction arrows

U. Digital display position indicator

V. Interphone 3-way and alarm buzzer system

W. Overload and full indication signals



X. Instruction plate

Y. Man machine function box including many operation device

Z. Emergency car light

2.3. LANDING DOORS

C. GF floor: hairline stainless steel with narrow jamb

D. Typical floors: hairline stainless steel

2.4. HALL SIGNAL

E. Hall call button: Electromechanical, spot–LED type

F. Hall position indicator: At all floors, 7 segment, show direction and position,

full and out of service signals

G. Next departure arrows: At the floor

H. Maintenance box: At top of car containing up & down button, and

maintenance operation switch

2.5. MACHINERY

I. Machine:-traction, gearless motor (synchronous motor)

J. Drive: VVVF closed loop

K. Location: without machine room, or with machine room

L. Safety gear: progressive

M. Roping: 2: 1

N. Power supply: 380 V, 3–PHASE, 50 Hz

O. Lighting supply: 220 V, 1–PHASE. 50 Hz

P. Maintenance operating lamp and socket outlet

2.6. SERVICE FUNCTIONS

O. Safety drive operation: when a car stops between floors due to mechanical

malfunction (excluding interruption of electricity), the car descends to the

nearest floor below

P. Anti-nuisance operation: in case of substantial difference between the

number of calls registered on the car operating panel and actual load in the

elevator, the elevator prevents unnecessary operation by canceling all

registered calls when it arrives at the nearest floor



Q. Automatic door open & close lime adjustment: Door open and close times

are automatically adjusted depending on whether the call is a hall call or a

car call to increase the operating efficiency

R. Car door safety edge: extending the full height of the car door, this device

causes the doors to return to the fully open position, should the door

encounter a person or obstacle car call

S. Micro leveling: an automatic two -way leveling device is provided to

maintain the elevator car level with the landing , regardless of elevator load

or direction reversal

T. Detection of jammed hall button and exclusion from operation service :. A

hall button jammed mechanically, the hall call will be automatically

bypassed after being served once, until the problem is resolved

U. Overload: Car load weighing Device to prevent an over loaded car from

starting, light and buzzer are provided. The buzzer remains sounding until

the over load condition decreases the door remains open during overload

V. Car call cancellation: If false calls are registered by mistake or abuse, the

weighting device will decide upon actual loading, answer first call and

cancel other calls automatically

W. Parking operation: elevators can be automatically parked at a preset time,

thus a void manual stopping and restarting

X. Emergency fire service: the elevator will automatically return to the lobby or

primary designed floor when fire detection devices (supplied by other) are

activated, allowing passenger to exist. The floor will remain parked at that

landing until the detection devices (supplied by others) are deactivated or

until the elevator is used by afire man using a special fire man service switch

or key

Y. Door nudging: when the doors remain open for more than the fixed door

open time (approx. 20seconds) this feature closes the doors at reduced

closing speed with the buzzer sounding

Z. Full load: sensor full rated load and does not respond to outside calls until

load is reduced

AA. Intercom at 3–way: the passenger in the elevator room can communicate

with any person in machine or maintenance room

BB. ALP: automatic evacuation of passenger when power or electricity is

interrupted

2.7. ADDITIONAL SAFETY DEVICES

C. Emergency cab lighting



D. Terminal and final limit switch


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