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GAI#13034A General Mechanical Requirements June, 2015 15100 - 1

DIVISION 15 - MECHANICAL SECTION 15100 - GENERAL MECHANICAL REQUIREMENTS PART 1 - RELATED DOCUMENTS 1.1 SUMMARY: A. All work under Division 15 is subject to the General Conditions, and General Requirements (Division 1) for the entire contract. B. Provide all labor, materials, equipment, and services necessary for and incidental to the complete installation and operation of all mechanical work. C. Unless otherwise specified, all submissions shall be made to, and acceptances and approvals made by, the Engineer through the Architect. D. Contract Drawings are generally diagrammatic and all offsets, fittings, transitions and accessories are not necessarily shown. Furnish and install all such items as may be required to fit the work to the conditions encountered. Arrange piping, ductwork, equipment, and other work generally as shown on the contract drawings, providing proper clearance and access. Where departures are proposed because of field conditions or other causes, prepare and submit detailed shop drawings for approval in accordance with "Submittals" specified below. The right is reserved to make reasonable changes in location of equipment, piping, and ductwork, up to the time of rough-in or fabrication. E. Conform to the requirements of all rules, regulations and codes of local, state and federal authorities having jurisdiction. F. Be responsible for all construction means, methods, techniques, procedures, and phasing sequences used in the work. Furnish all tools, equipment and materials necessary to properly perform the work in a first class, substantial, and workmanlike manner, in accordance with the full intent and meaning of the contract documents. 1.2 PERMITS AND FEES: A. Obtain all permits and pay taxes, fees and other costs in connection with the work. File necessary plans, prepare documents, give proper notices and obtain necessary approvals. Deliver inspection and approval certificates to Owner prior to final acceptance of the work. B. Permits and fees shall comply with the General Requirements of the specification. C. For fuel burning equipment, obtain necessary construction and operating permits, including EPA and Maryland Department of Environment (MDE) Registrations/Permits.


1.3 EXAMINATION OF SITE: A. Examine the site, determine all conditions and circumstances under which the work must be performed, and make all necessary allowances for same. No additional cost to the Owner will be permitted for Contractor's failure to do so. 1.4 CONTRACTOR QUALIFICATION: A. Any Contractor or Subcontractor performing work under Division 15 shall be fully qualified and acceptable to the Architect. Submit the following evidence if requested.

1. A list of not less than five comparable projects that the Contractor completed. 2. Letter of reference from not less than three registered professional engineers,

general contractors or building owners.

3. Local and/or State License, where required.

4. Membership in trade or professional organizations where required. B. A Contractor is any individual, partnership, or corporation performing work by Contract or subcontract on this project. C. Acceptance of a Contractor or Subcontractor will not relieve the Contractor or subcontractor of any contractual requirements or his responsibility to supervise and coordinate the work of various trades. 1.5 MATERIALS AND EQUIPMENT: A. Materials and equipment installed as a permanent part of the project shall be new, unless otherwise indicated or specified, and of the specified type and quality. B. Where material or equipment is identified by proprietary name, model number and/or manufacturer, furnish named item (or its equal) as indicated in this specification. C. The suitability of named item only has been verified. Where more than one Manufacturer is named, only the first named Manufacturer has been verified as suitable. Manufacturers and items other than first named shall be equal or better in quality and performance to that of specified items, and must be suitable for available space, required arrangement and application. Contractor, by providing other than the first named Manufacturer, assumes responsibility for all necessary adjustments and modifications necessary for a satisfactory installation. D. Substitution will not be permitted for single specified items of material or equipment. E. The Contractor shall only submit those manufacturers indicated in the specification. Proposed alternate manufacturers will not be considered unless the specific item indicates "or as approved equal". Submit all data necessary to determine suitability of substituted items, for approval.


F. All items of equipment furnished shall have a service record of at least five (5) years. 1.6 FIRE SAFE MATERIALS: A. Unless otherwise indicated, materials and equipment shall conform to UL, NFPA or ASTM standards for fire safety with smoke and fire hazard rating not exceeding flame spread of 25 and smoke developed of 50. 1.7 REFERENCED STANDARDS, CODES AND SPECIFICATIONS: A. Specifications, Codes and Standards listed below are included as part of this specification, latest edition.

AABC - Associated Air Balance Council ABMA - American Boiler Manufacturers Association ACCA - Air Conditioning Contractors of America ACGIH - American Conference of Governmental Industrial

Hygienist AIHA - American Industrial Hygiene Association ASA - Acoustical Society of America ADC - Air Diffusion Council AMCA - Air Movement and Control Association ANSI - American National Standards Institute ARI - Air Conditioning and Refrigeration Institute ASHRAE - American Society of Heating, Refrigerating and Air

Conditioning Engineers ASME - American Society of Mechanical Engineers ASTM - American Society for Testing and Materials IBC - International Building Code IMC - International Mechanical Code IPC - International Plumbing Code CABO - Council of American Building Officials CS - Commercial Standard CSA - Canadian Standards Association IEEE - Institute of Electrical and Electronics Engineers MSSP - Manufacturers Standards Society of the Valve and

Fittings Industry NEC - National Electrical Code NEMA - National Electrical Manufacturers Association NFPA - National Fire Protection Association SMACNA - Sheet Metal and Air Conditioning Contractors

National Association TEMA - Tubular Exchanger Manufacturers Association UL - Underwriters' Laboratories

B. All mechanical equipment and materials shall comply with the codes and standards listed in the latest edition of ASHRAE HVAC Applications Handbook, Chapter entitled "Codes and Standards".


C. Unless otherwise indicated, referenced Codes or Standards shall mean latest edition. 1.8 SUBMITTALS, REVIEW AND ACCEPTANCE: A. Equipment, materials, installation, workmanship and arrangement of work are subject to review and acceptance. No substitution will be permitted after acceptance of equipment or materials except where such substitution is considered by the Engineer to be in best interest of Owner. B. All submittal information and literature shall be submitted for review in hard copy and electronic formats. A final approved electronic copy that incorporates all revisions shall be resubmitted for record. See specific requirements for electronic documentation for various portions of submittals herein. In the absence of specific electronic requirements, provide Microsoft application software files (Word, Excel, etc) or provide Adobe portable document format (PDF) for any other documentation to be submitted. Electronic submittals shall be originally authored in electronic media and not scanned versions with hand mark-ups unless specifically approved by the Owner. For portable document format this shall generally require selectable test and graphics that are readable to keep file size to a minimum (rather than graphic images alone). Electronic drawings shall be submitted in Autocad or Visio format. B. Within 45 calendar days after award of contract, submit for Engineer’s approval complete materials and equipment list, including a list of subcontractors’ and manufacturers’ names. After receipt of reviewed Material and Equipment List, submit complete shop drawings for approval. List all materials and equipment, indicating manufacturer, type, class, model, curves, and other general identifying information. C. Submit complete descriptive data for all items. Data shall consist of specifications, data sheets, samples, capacity ratings, performance curves, operating characteristics, catalog cuts, dimensional drawings, wiring diagrams, specific electrical/wiring requirements and connections including control and interlock wiring, installation instructions, and any other information necessary to indicate complete compliance with Contract Documents. Edit submittal data specifically for application to this project. D. Thoroughly review and stamp all submittals to indicate compliance with contract requirements prior to submission. Coordinate installation requirements and any electrical requirements for equipment submitted. Contractor shall be responsible for correctness of all submittals. E. Submittals will be reviewed for general compliance with design concept in accordance with contract documents, but dimensions, quantities, or other details will not be verified. F. Identify submittals, indicating intended application, location and service of submitted items. Refer to specification sections or paragraphs where applicable. Clearly indicate exact type, model number, style, size and special features of proposed item. Submittals of a general nature will not be acceptable. For substituted items, clearly list on the first page of the submittal all differences between the specified item and the proposed item. The Contractor shall be responsible for corrective action (or replacement with the specified item) while maintaining the specification requirements if differences have not been clearly indicated in the submittal.


G. Submit actual operating conditions or characteristics for all equipment where required capacities are indicated. Factory order forms showing only required capacities will not be acceptable. H. Acceptance will not constitute waiver of contract requirements unless deviations are specifically indicated and clearly noted. J. Use of electronic submittals requires prior approval from Engineer. Electronic submittals will be returned with electronic comments. Reimburse Engineer for costs associated with duplicating or copying electronic submittals for distribution. 1.9 SHOP DRAWINGS: A. Prepare and submit shop drawings for all specially fabricated items, modifications to standard items, specially designed systems where detailed design is not shown on the contract drawings, or where the proposed installation differs from that shown on contract drawings. B. Submit data and shop drawings as listed below, in addition to provisions of paragraph 1 above. Identify all shop drawings by the name of the item and system and the applicable specification paragraph number.

Items and Systems

Access Doors. Air Cooled Condensing Units. Air Distribution Systems. Air Handling Units, central station. As-Built Drawings. Automatic Temperature Control System, Equipment, and Diagrams. Central Control and Monitoring System (CCMS) and Equipment. Coils, heating and cooling Coordinated Drawings. Dampers, manual and automatic. Duct Materials and Hangers/Supports. Energy Management System (EMS) and Equipment. Equipment Rails and Curbs Exterior Equipment/Duct/Piping Supports. Fans. Final Balance Report. Fire Marshal Approvals. Fire Stopping - Methods and Materials. Flexible Ductwork and Connections. Grilles, Registers, Diffusers, Linear Slots and Fire Dampers. Identification System. Installation and Coordination Drawings. Louvers. Material and Equipment List. Packaged Rooftop Unit. Pipe Enclosures.


Pipe Materials and Hangers/Support. Pressure Gauges. Provision for Access. Pumps, In-line, Base Mounted. Record and Information Booklet. Roof Curbs. Rooftop Units. Test Certificates and Reports. Thermal Insulation Materials. Thermostats, temperature sensors Valves - Gate, Globe, Angle, Check, Plug, Butterfly, Ball, Needle. Variable Air Volume Units Vibration Isolation. Volume Control Dampers, manual. Wiring Diagrams, Flow Diagrams, and Operating Instructions.

C. Contractor, additionally, shall submit for approval any other shop drawings as required by the Architect. No item listed above shall be delivered to the site, or installed, until approved. After the proposed materials have been approved, no substitution will be permitted except where approved by the Engineer. 1.10 SUPERVISION AND COORDINATION: A. Provide complete supervision, direction, scheduling, and coordination of work under the Contract, including that of subcontractors. B. Coordinate rough-in of work and installation of sleeves, anchors, and supports for piping, ductwork, and other work performed under Division 15. C. Coordinate electrical work required under Division 15 with that under Division 16. Coordinate work under Division 15 with work under other Divisions. D. Where a discrepancy exists within the specifications or drawings or between the specifications and drawings, the more stringent (or costly) requirement shall apply until a clarification can be obtained from the Engineer. Failure to clarify such discrepancies with the Engineer will not relieve the Contractor of the responsibility of conforming to the requirements of the Contract. E. Failure of Contractor to obtain a full and complete set of Contract Documents (either before or after bidding) will not relieve the Contractor of the responsibility of complying with the intent of the Contract Documents. 1.11 CUTTING AND PATCHING: A. Accomplish cutting and patching necessary for the installation of work under Division 15. Damage resulting from this work to other work already in place shall be repaired at Contractor's expense. Where cutting is required, perform work in neat and workmanlike manner. Restore disturbed work to match and blend with existing, using materials compatible with the original. Use mechanics skilled in the particular trades required.


B. Do not cut structural members without approval. 1.12 PENETRATION OF WATERPROOF CONSTRUCTION: A. Coordinate the work to minimize penetration of waterproof construction, including roofs, exterior walls, and interior waterproof construction. Where such penetrations are necessary, furnish and install all necessary curbs, sleeves, flashings, fittings and caulking to make penetrations absolutely watertight. B. Where plumbing vents or other pipes penetrate roofs, flash pipe with Stoneman "Stormtite", or approved equal, roof flashing assemblies, with 4-pound lead, 6-inch skirt and caulked counterflashing sleeve similar to No. 1000-4. C. Furnish and install pitch pockets when and where required, whether indicated on drawings or not. All structural penetrations of roof will require pitch pockets. 1.13 CONCRETE AND MASONRY WORK: A. Furnish and install concrete and masonry work for equipment foundations, supports, pads, and other items required under Division 15. Perform work in accordance with requirements of other applicable Divisions of these specifications. B. Concrete shall test not less than 3,000 psi compressive strength after 28 days. C. Grout shall be non-shrink, high strength mortar, free of iron of chlorides and suitable for use in contact with all metals, without caps or other protective finishes. Apply in accordance with manufacturer's instructions and standard grouting practices. 1.14 DEMOLITION: A. Provide and coordinate removal of existing equipment as indicated. Take care to protect materials and equipment indicated for reuse or to remain. Contractor shall repair or replace items that are damaged. Contractor shall have Owner's representative present to confirm condition of equipment prior to demolition. It is strongly recommended that photographic evidence be collected of existing conditions prior to start of any demolition. B. The Owner reserves the right to salvage materials and equipment prior to and during construction. C. All other materials and equipment which are removed shall become property of the Contractor and shall be promptly removed from the premises and disposed of by the Contractor in an approved manner. All existing equipment refused by the Owner shall become the property of the Contractor and shall be removed from the site by the Contractor in a timely manner and disposed of in a legal manner. The Contractor shall be responsible for proper disposal of all removed equipment containing refrigerants. D. Where piping and ductwork is removed, remove all pipe and ductwork hangers which were supporting the removed piping or ductwork. Patch the remaining penetration voids with like materials to match existing construction.


1.15 DRIVE GUARDS A. Provide safety guards on all exposed belt drives, motor couplings, and other rotating machinery. Provide fully enclosed guards where machinery is exposed from more than one direction. B. When available, guards shall be factory-fabricated and furnished with the equipment. Otherwise, fabricate guards of heavy gauge steel, rigidly braced, removable, and finish to match equipment served. Provide openings for tachometers. Guards shall meet local, State and OSHA requirements. 1.16 VIBRATION ISOLATION A. Furnish and install vibration isolators, flexible connections, supports, anchors and/or foundations required to prevent transmission of vibration from equipment, piping or ductwork to building structure. See Section 15975 “VIBRATION CONTROL”. 1.17 FASTENERS A. All fasteners located in public spaces including gymnasium, corridors, classrooms, locker rooms, showers, toilet rooms, lobbies, etc., shall be provided with tamper-proof fasteners. Provide Pin Philips hardware as manufactured by Challenge Industries, or approved equal. 1.18 DEFINITIONS

A. Furnish and install or provide means to supply, erect, install, and connect to complete for readiness for regular operation, the referenced work.

B. Contractor means the Mechanical Contractor and any of his subcontractors, vendors, suppliers, or fabricators.

C. Piping includes pipe, all fittings, valves, hangers, insulation, identification, and other accessories relative to such piping.

D. Ductwork includes duct material, fittings, hangers, insulation, sealant, identification and other accessories.

E. Concealed means hidden from sight in chases, formed spaces, shafts, hung ceilings, embedded in construction, or in crawl space or attic.

F. Exposed means not installed underground or “concealed” as defined above.

G. Invert Elevation means the elevation of the inside bottom of pipe.

H. Finished Spaces: Spaces other than mechanical and electrical equipment rooms, furred spaces, pipe and duct shafts, unheated spaces immediately below roof, spaces above ceiling, unexcavated spaces, crawl spaces, and tunnels.


PART 2 - ELECTRICAL REQUIREMENTS 2.1 SCOPE: A. Furnish and install control and interlock wiring for the equipment furnished. In general, power wiring and motor starting equipment will be provided under Division 16. Carefully review the contract documents to coordinate the electrical work under Division 15 with the work under Division 16. Where the electrical requirements of the equipment furnished differ from the provisions made under Division 16, make the necessary allowances under Division 15. Where no electrical provisions are made under Division 16, include all necessary electrical work under Division 15. B. All electrical work performed under Division 15 shall conform to the applicable requirements of Division 16. 2.2 MOTORS AND CONTROLS: A. Motors and controls shall conform to the latest requirements of IEEE and NEMA, and shall be UL listed. Motor sizes are specified with the driven equipment. Motor starting and control equipment is specified either with the motor which is controlled or in an electrical specification section. The Contractor is advised to consult all specification sections to determine responsibility for motors and controls. B. Motors shall be designed, built and tested in accordance with the latest revision of NEMA Standard NG l. Motors connected to variable frequency drives shall comply with NEMA MG1, Section 31.40.4.2. C. Motors shall be suitable for use under the conditions and with the equipment to which applied, and designed for operation on the electrical systems specified or indicated.

1. Motor capacities shall be such that the horsepower rating and the rated full-load current will not be exceeded while operating under the specified operating conditions. Under no condition shall the motor current exceed that indicated on the nameplates.

2. Motor sizes noted in the individual equipment specifications are minimum

requirements only. It is the responsibility of the equipment manufacturers and of the Contractor to furnish motors, electrical circuits and equipment of ample capacity to operate the equipment without overloading, exceeding the rated full-load current, or overheating at full-load capacity under the most severe operating service of this equipment. Motors shall have sufficient torque to accelerate the total WR2 of the driven equipment to operating speed.

3. Motors shall be continuous duty type and shall operate quietly at all speeds and

loads.

4. Motors shall be designed for operation on 60 hertz power service. Unless otherwise specified or shown, motors less than 1/2 horsepower shall be single phase, and motors 1/2 horsepower and larger shall be 3 phase.


5. Motors shall be mounted so that the motor can be removed without removing the entire driven unit.

6. Brake horsepower load requirement at specified duty shall not exceed 85% of

nameplate horsepower times NEMA service factor for motors with 1.0 and 1.15 service factors. For water or refrigerant cooled motors driving compressors and where other limits for certain equipment are given, the maximum load percentage shall be 78%, 72%, and 70%, for motors with 1.25, 1.35, and 1.4 service factors, respectively.

7. Unless otherwise indicated, indoor motors shall be open drip-proof with 1.15 service

factors and outdoor motors shall be totally enclosed fan-cooled with 1.15 or 1.0 service factor.

D. Single phase motors, smaller than 1/20 horsepower shall be "life-time" ball or sleeve bearing; open, 120 volts, permanent-split capacitor or shaded pole type, minimum efficiency of 70% with a minimum full load power factor of 77%. E. Single phase motors 1/20 horsepower and larger, but less than 1/2 horsepower shall be "life-time" ball bearing; for outdoor service with Class A or B insulation, as standard with the motor manufacturer; capacitor start-induction run, permanent split capacitor, or repulsion start-induction run type with minimum efficiency of 70% and a minimum full load power factor of 77%. F. Three Phase Motors:

1. Except as otherwise specified in the various specification sections, 3 phase motors 1/2 horsepower and larger shall be NEMA Design B squirrel cage induction type meeting the requirements of this paragraph. Insulation shall be Class B or F, as

standard with the motor manufacturer; at 40C ambient temperature. Motors specified for operation at 480, 240, and 208 volts shall be nameplated 460, 230, 200 volts respectively. All motors shall be of the high efficiency type. Efficiencies at full load for three phase motors shall be not less than the values listed below:

Motor Nameplate

Minimum Efficiency at Nominal

Speed and Rated Load -- 230/460 Volts at 1750 RPM

1 HP and below (.74 kW)

82.5%

1-1/2 HP (1.1 kW)

84.0%

2 HP (1.5 kW)

84.0%

3 HP (2.2 kW)

87.5%

5 HP (3.7 kW)

87.5%

7-1/2 HP (5.6 kW)

89.5%


Motor Nameplate

Minimum Efficiency at Nominal

Speed and Rated Load -- 230/460 Volts at 1750 RPM

10 HP (7.5 kW) 89.5%

15 HP (11.2 kW)

91.0%

20 HP (14.9 kW)

91.0%

25 HP (18.7 kW)

92.4%

30 HP (22.3 kW)

92.4%

40 HP (29.7 kW)

93.0%

50 HP (37.3 kW)

93.0%

60 HP (44.6 kW)

93.6%

75 HP (52.1 kW)

94.1%

100 HP (74.6 kW)

94.5%

125 HP (93.3 kW)

94.5%

150 HP and above (111.9 kW)

95.0%

2. Three phase motors 1/2 HP or greater shall be the Duty Master XE by Reliance Electric Company, Super-E Premium Efficiency of Baldor Motor and Drives, the MAC II High Efficiency motor of Westinghouse Electric Corporation, the equivalent product of General Electric, Lincoln, Gould, Magnetec, Toshiba, or approved equal. For motors serving equipment being controlled by a variable speed drive, motor and drive shall be by the same manufacturer.

3. Minimum full load power factor before power factor correction of horizontal and

vertical shaft motors as follows:

1/2 HP

(3600 & 1800 RPM) - 70%

3/4 HP

(3600 & 1800 RPM) - 70%

1, 1-1/2 & 2 HP

(3600 & 1800 RPM) - 79%

3 HP to 250 HP

(3600 & 1800 RPM) - 85%

G. Control of each motor shall be manual or automatic as specified for each in the various mechanical sections. In general, and unless otherwise specified for a particular item in the various mechanical sections of the specifications, motor starters and controls shall be specified and provided under the various electrical sections of these specifications.


2.3 CAPACITORS: A. Capacitors for power factor correction shall be provided for motors indicated on the electrical drawings and on all motors 1 HP and above. Submit capacitors with equipment to which the capacitor is to be connected. Capacitors shall be connected at the motor terminals and raise the motor power factor to a minimum of 90%. Capacitors shall be sized by motor manufacturer. Capacitors shall have integral fusing and indicating lights on all phases to give visible indication that a fuse has blown. B. Capacitors shall not use Polychlorinated Biphenyl's (PCB) or mineral oil as a cooling medium. All capacitors shall have NEMA 1 enclosures for indoor mounting and NEMA 3R enclosures for exterior mounting. C. Coordinate wiring connections to capacitors and motors with the electrical contractor. D. Do not provide power factor correction for motors served by variable speed drives. PART 3 - EXECUTION 3.1 SUPPORTS, HANGERS AND FOUNDATIONS: A. Provide supports, hangers, braces, attachments and foundations required for the work. Support and set the work in a thoroughly substantial and workmanlike manner without placing strains on materials, equipment, or building structure. Submit shop drawings for approval. Coordinate all work with the requirements of the architectural and structural divisions. B. Supports, hangers, braces, and attachments shall be standard manufactured items or fabricated structural steel shapes. All interior hangers shall be galvanized. All exterior hangers shall be constructed of stainless steel utilizing stainless steel rods, nuts, washers, bolts, etc. C. Concrete housekeeping pads and foundations shall be not less than 4 inches high and shall extend a minimum of 6 inches beyond equipment bases. Provide wire-mesh or re-bar reinforcement; chamfer exposed edges and corners; and finish exposed surfaces smooth. 3.2 EQUIPMENT INSTALLATION - COMMON REQUIREMENTS A. Install equipment to provide maximum possible headroom, if mounting heights are not indicated. B. Install equipment according to approved submittal data. Portions of the work are shown only in diagrammatic form. Refer conflicts to Architect/Engineer. C. Install equipment level and plumb, parallel and perpendicular to other building systems and components in exposed interior spaces, unless otherwise indicated. D. Install mechanical equipment to facilitate service, maintenance, and repair or replacement of components. Connect equipment for ease of disconnecting, with minimum interference, to other installations. Extend grease fittings to accessible locations.


E. Install equipment giving right of way to piping installed at required slope. F. Install flexible connectors on equipment side of shut-off valves, horizontally and parallel to equipment shafts, if possible. 3.3 PROVISIONS FOR ACCESS: A. The Contractor shall provide access panels and doors for all concealed equipment, valves, strainers, manual, gravity and automatic dampers, filters, controls, control devices, cleanouts, fire dampers, damper operators, traps, and other devices requiring maintenance, service, adjustment, balancing or manual operation. B. Where access doors are necessary, furnish and install manufactured steel door assemblies consisting of hinged door, key locks (keyed alike), and frame designed for the particular wall or ceiling construction. Properly locate each door. Door size shall be a minimum of 24" x 24". Provide UL approved and labeled access doors where installed in fire rated walls or ceilings. Doors shall be Milcor Metal Access Doors as manufactured by Inland-Ryerson, or approved equal.

1. Acoustical or Cement Plaster: Style B

2. Hard Finish Plaster: Style K or L

3. Masonry or Dry Wall: Style M C. Where access is by means of lift-out ceiling tiles or panels, mark each panel using small color-coded or numbered tabs as specified under 3.7, paragraph C. Provide a chart or index for identification. Charts shall be similar to valve charts specified hereinafter. Provide chart in O&M Manual [and at new and existing boiler rooms]. Screw markers on ceiling grid. D. Access panels, doors, etc., described herein shall be furnished under the section of specifications providing the particular service to be turned over to the pertinent trade for installation. Coordinate installation with installing Contractor. 3.4 PAINTING AND FINISHES: A. Provide protective finishes on all materials and equipment. Use coated or corrosion-resistant materials, hardware and fittings throughout the work. Paint bare, untreated ferrous surfaces with rust-inhibiting paint. All exterior components including supports, hangers, nuts, bolts, washers, vibration isolators, etc., shall be galvanized or stainless steel. B. Clean surfaces prior to application of insulation, adhesives, coatings, paint, or other finishes. C. Provide factory-applied finishes where specified. Unless otherwise indicated factory-applied paints shall be baked enamel with proper pre-treatment. D. Protect all finishes and restore any finishes damaged as a result of work under Division 15 to their original condition.


E. The preceding requirements apply to all work, whether exposed or concealed. F. Remove all construction marking and writing from exposed equipment, ductwork, piping and building surfaces. Do not paint manufacturer's labels or tags. G. All exposed both insulated and non-insulated ductwork, piping, equipment, etc. shall be painted. Colors shall be selected by the Owner. H. Submit color of factory-finished equipment for approval prior to ordering. I. Insulation with canvas finishes shall be painted to provide a uniform finish. 3.5 CLEANING OF SYSTEMS: A. Thoroughly clean systems after satisfactory completion of pressure tests and before permanently connecting fixtures, equipment, traps, strainers, and other accessory items. Blow out and flush piping until interiors are free of foreign matter. B. Flush piping in circulating water systems to remove cutting oil, excess pipe joint compound and other foreign materials. Do not use system pumps until after cleaning and flushing has been accomplished to the satisfaction of the Engineer. Employ chemical cleaners, including a non-foaming detergent, not harmful to system components. After cleaning operation, final flushing and refilling, the residual alkalinity shall not exceed 300 parts per million. Submit a certificate of completion to Engineer stating name of service company used. C. Leave strainers and dirt pockets in clean condition. D. Clean fans, ductwork, enclosures, registers, grilles, and diffusers at completion of work. E. Install filters of equal efficiency to those specified in permanent air systems operated for temporary heating during construction. Replace with clean filters as specified prior to acceptance and after cleaning of system. F. Pay for labor and materials required to locate and remove obstructions from systems clogged with construction refuse after acceptance. Replace and repair work disturbed during removal of obstructions. G. Leave systems clean and in complete running order. 3.6 PROTECTION OF WORK: A. Protect work, material and equipment from weather and construction operations before and after installation. Properly store and handle all materials and equipment. B. Cover temporary openings in piping, ductwork, and equipment to prevent the entrance of water, dirt, debris, or other foreign matter. C. Cover or otherwise protect all finishes. D. Replace damaged materials, devices, finishes and equipment.


3.7 OPERATION OF EQUIPMENT: A. Clean all systems and equipment prior to initial operation for testing, balancing, or other purposes. Lubricate, adjust, and test all equipment in accordance with manufacturer's instructions. Do not operate equipment unless all proper safety devices or controls are operational. Provide all maintenance and service for equipment that is authorized for operation during construction. B. Where specified, or otherwise required, provide the services of the manufacturer's factory-trained servicemen or technicians to start up the equipment. C. Do not use mechanical systems for temporary services during construction unless authorized in writing by the Owner. Where such authorization is granted, temporary use of equipment shall in no way limit or otherwise affect warranties or guaranty period of the work. D. Upon completion of work, clean and restore all equipment to new conditions; replace expendable items such as filters. E. Provide Owner with one (1) spare set of belts for each piece of belt-driven equipment. 3.8 IDENTIFICATIONS, FLOW DIAGRAMS, ELECTRICAL DIAGRAMS AND OPERATING

INSTRUCTIONS: A. Contractor shall submit for approval schematic piping diagrams of each piping system installed in the building. Diagrams shall indicate valve location, service, type (i.e., gate, globe, ball, etc.) make, model number and the identification number of each valve in the particular system. Following approval by all authorities, the diagrams shall be framed, mounted under glass and hung in each Mechanical Room where directed. Contractor shall deliver the tracing or sepia from which the diagrams were reproduced to the Owner. B. All valves shall be plainly tagged. C. All items of equipment, including motor starters, ATC panels, etc., shall be furnished with white letters and numbers on black plastic identification plates or aluminum letters and numbers on black engraved aluminum identification plates. Lettering shall be a minimum of 1/4" high. Identification plates shall be securely affixed to each piece of equipment, starters, panels, etc., by screws or adhesive (Tuff-bond #TB2 or as approved equal). Pressure sensitive tape backing is prohibited. D. Provide three (3) copies of operating and maintenance instructions for all principal items of equipment furnished. This material shall be bound as a volume of the "Record and Information Booklet" as hereinafter specified. E. All lines (piping and ductwork) installed under this contract shall be stenciled with "direction of flow" arrows and with stenciled letters naming each pipe and ductwork and service. F. Provide at least 16 hours of straight time instruction to the operating personnel. This instruction period shall consist of not less than two (2) consecutive 8-hour days. Time of instruction shall be designated by the Owner. Additional instruction time for the Automatic Temperature Control


(ATC) and Energy Management System (EMS) is specified in Section 15850 Automatic Temperature Controls. 3.9 WALL AND FLOOR PENETRATIONS: A. Provide sleeves for pipes and ducts passing through roofs, floors, ceiling, walls, partitions, air handling unit casings, structural members, and other building parts. B. Penetrations of mechanical room partitions, walls, ceilings, and floors shall be as specified in Section 15975, "Vibration Control". C. Provide escutcheons for sleeved pipes in finished areas. D. Piping sleeves:

1. Galvanized steel pipe, standard weight, where pipes are exposed and on roofs and in concrete and masonry walls. On exterior walls provide anchor flange welded to perimeter.

2. Twenty-two (22) gauge galvanized steel elsewhere.

E. Ductwork sleeves: 20 gauge galvanized steel. F. Penetrations shall be sealed and caulked airtight for sound and air transfer control. Voids where ducts and pipes penetrate floors or other fire rated assemblies shall be appropriately fire-sealed with an approved fire sealant (3M or Dow Corning Fire Sealant Foam and Caulk). G. Where piping extends through exterior walls, provide link-seal or equivalent. 3.10 RECORD DRAWINGS: A. Upon completion of the mechanical installations, the Contractor shall deliver to the Engineer one complete set of prints of the Mechanical Contract Drawings that shall be legibly marked in red pencil to show all changes and departures of the installation as compared with the original design. They shall be suitable for use in preparation of Record Drawings. 3.11 GUARANTEE: A. Contractor's attention is directed to guarantee obligations contained in the GENERAL CONDITIONS. B. The above shall not in any way void or abrogate Equipment Manufacturer's Guarantee or Warranty. Certificates of guarantee shall be included in the Operations and Maintenance Manuals. C. All equipment shall have a minimum warranty from the date of Owner acceptance for 2 years. D. Contractor shall also provide, when due to malfunction, two (2) years free service, from the time of final acceptance by the Owner, to keep the equipment in operating condition. This service


shall be rendered upon request when notified of any equipment malfunctions. Such free services provided by the Contractor shall be limited to repairs, maintenance and correction of malfunctions which are determined to be a result of faulty work or equipment provided by the Contractor. The Owner will be responsible for normal routine maintenance during this 2-year time period. 3.12 LUBRICATION: A. All bearings, motors, and all equipment requiring lubrication shall be provided with accessible fittings for same. Before turning over the equipment to the Owner, the Contractor shall fully lubricate each item of equipment, shall provide one year's supply of lubricant for each, and shall provide Owner with complete written lubricating instructions, together with diagram locating the points requiring lubrication. Include this information in the Record and Information Booklet. B. In general, all motors and equipment shall be provided with grease lubricated roller or ball bearings with Alemite or equal accessible or extended grease fittings and drain plugs. 3.13 RECORD AND INFORMATION BOOKLET: A. The Contractor shall have prepared three (3) copies of the Record and Information Booklet and deliver these copies of the booklet to the Owner. The booklet shall be as specified herein. The booklet must be approved and will not be accepted as final until so stamped. B. The booklet shall be bound in a three-ring loose-leaf binder similar to "National" No. 3881 with the following title lettered on the front: "Record and Information Booklet (insert name of the project)". No sheets larger than 8-1/2" x 11" shall be used, except sheets that may be neatly folded to 8-1/2" x 11" and used as a pull-out. C. Provide the following data in the booklet:

1. Catalog data on each piece of equipment furnished.

2. Maintenance operation and lubrication instructions on each piece of equipment furnished.

3. Complete catalog data on each piece of heating and air conditioning equipment

furnished with approved Shop Drawing or Submittal including Automatic Temperature Control (ATC).

4. Manufacturer's and Contractors' guarantees.

5. Chart form indicating time and type of routine maintenance of air handling units,

fans, etc. The chart shall also indicate tag number, model number of equipment, location and service. For replacement items such as filters, indicate type, size and quantity of the replaceable items.

6. Provide sales and service representatives’ names and phone numbers of all

equipment and subcontractors.


7. Catalog data of all equipment, valves, etc., which shall include wiring diagrams, parts list and assembly drawing.

8. Provide valve chart including valve tag number, valve type, valve model number,

valve manufacturer, style, service and location, etc., as specified hereinafter.

9. Copy of the approved balancing report.

10. Provide operating curves indicating design and balanced conditions for fans.

11. ATC Systems including As-Built ATC drawings of systems, sequences of operation including internal devices, wiring and pneumatic tubing within panels.

12. Identify all equipment and devices on wiring diagrams and schematics. Where field

connections are shown to factory-wired terminals, include manufacturer's literature showing internal wiring.

3.14 INSTALLATION AND COORDINATION DRAWINGS: A. Prepare, submit, and use composite installation and coordination drawings to assure proper coordination and installation of work. Drawings shall include, but not be limited, to the following: Complete Ductwork, Plumbing, Sprinkler and HVAC Piping Drawings showing coordination with lights, electrical equipment, structural, and architectural elements and provision for access. In addition, prepare a coordinated reflected ceiling plan indicating location of all ceiling-mounted devices and work related to all Divisions (including, but not necessarily limited to: ceiling grid, bulkheads, drywall ceilings, decorative ceilings, lights, air devices, access panels, sprinkler heads, speakers, fire alarm devices, exit signs, etc.). Items located in the ceiling shall be evenly spaced in symmetrical fashion, to the fullest extent possible. Electronic files shall be obtained from the Architect for the purposes of preparing installation and coordination drawings. B. Draw plans to a scale not less than 3/8-inch equals one foot. Include plans, sections, and elevations of proposed work, showing all equipment, piping and ductwork in areas involved. Fully dimension all work including lighting fixtures, conduits, pull boxes, panelboards, and other electrical work, walls, doors, ceilings, columns, beams, joists and other architectural and structural work. C. Identify all equipment and devices on wiring diagrams and schematics. Where field connections are shown to factory-wired terminals, include manufacturer's literature showing internal wiring. 3.15 TESTS, GENERAL: A. The entire new heating, cooling, and drainage systems shall be tested hydrostatically for a duration of four (4) hours before insulation covering is applied and proved tight under the following gauge pressures:

SYSTEM TEST PRESSURE

Coil Drain Piping 100 psi


Heating Water Supply & Return Piping

Refrigerant Piping

100 psi

Halide Torch

B. All testing shall be witnessed by the Owner or Engineer. The Contractor shall provide a minimum of 48 hour notice before testing. The Contractor shall coordinate with and get approval from the Owner. 3.16 LINTELS: A. Under this Section, provide lintels not provided elsewhere which are required for openings for the installation of mechanical and plumbing work. Lintels shall meet the requirements of the Architectural and Structural Sections and the Architectural Drawings and Specifications. 3.17 OUTAGES: A. Provide a minimum of fourteen (14) day notice to schedule outages. The Contractor shall include in their bid outages and/or work in occupied areas to occur on weekends, holidays, or at night. Coordinate and get approval of all outages with the Owner. B. Submit "Outage Request" form, attached at end of this Section, to Owner for approval. 3.18 PIPING AND DUCTWORK IDENTIFICATION: A. All piping and ductwork shall be identified with painted background marked with the name of the service with arrows to indicate flow direction. Color code and system identification shall comply with OSHA and ANSI Standards A13.1-1981. Scheme for the identification of piping systems and ASHRAE Fundamentals Handbook. B. Markings shall use letters of standard style (Sans Serif Gothic Bold), stenciled on pipes and ductwork, and shall be located near each branch connection, near each valve or near flanges, where pipes or ducts pass through walls or floors, adjacent to changes in direction, and at least every 30 feet on straight runs of pipe or ductwork. Where pipes or ductwork are adjacent to each other, markings shall be neatly lined up. All markings shall be located in such manner as to be easily legible from the floor.

Outside Diameter of Pipe or Covering (Inches)

Length of Color Field (Inches) Size of Letters (Inches)

3/4 to 1-1/4 8 1/2

1-1/2 to 2 8 3/4

2-1/2 to 6 12 1-1/4

8 to 10 24 2-1/2

Over 10 & Ductwork 32 3-1/2


For piping 1/2 inch and less, provide a permanently legible tag as specified hereinafter for valve identification. END OF SECTION


OUTAGE REQUEST

DATE APPLIED: _________________________BY: ____________________________________ DATE FOR OUTAGE: _________________________ FIRM: __________________________________ START OUTAGE--TIME:_________________________ DATE:__________________________________ END OUTAGE-----TIME:_________________________ DATE:__________________________________ AREAS AND ROOMS: _________________________________________________________________

FLOOR(S):___________________________________________________________

AREA(S):____________________________________________________________

ROOM(S):___________________________________________________________ WORK TO BE PERFORMED: ___________________________________________________________ SYSTEM(S): ________________________________________________________________________

________________________________________________________________________ REQUEST APPROVED BY:______________________________________________________________

(FOREMAN OR OTHER PERSON IN CHARGE)

(FOR OWNER’S USE ONLY):

APPROVED: YES____ NO____ BY: ______________________________ DATE:_____________________________ DATE/TIME--AS REQUESTED: ________________________OTHER: ___________________________ OWNER’S PRESENCE REQUIRED:

YES____ NO____ NAME: ______________________________________________________________ POINT OF CONTACT: ______________________________PHONE: _________________________

GAI#13034.A Piping, Fittings, Valves, Etc. June, 2015 15200 - 1

DIVISION 15 - MECHANICAL SECTION 15200 - PIPING, FITTINGS, VALVES, ETC. PART 1 - RELATED DOCUMENTS 1.1 SUMMARY: A. All work under this section is subject to the requirements of Section 15100, "General Mechanical Requirements". 1.2 DESCRIPTION: A. Provide all labor and materials necessary to furnish and install all piping systems on this project, including heating water systems, refrigerant systems, and drainage systems. PART 2 - PRODUCTS 2.1 PIPE MATERIALS A. All materials, unless otherwise specified, shall be new and of the best quality of their respective kinds, and shall conform to the requirements and ordinances of local and insurance authorities having jurisdiction. Valves shall be manufactured by NIBCO, Crane, Stockham, Milwaukee, Jamesburry, Hammond, DeZurick, Victaulic, Keystone, or Tyco – Grinnell. 1. Heating Water Supply & Return Piping (Inside building aboveground): Pipe: 2" and smaller - Seamless copper hard temper

Type "L" ASTM B88-83a.

2-1/2" and larger - Schedule 40 Black Steel, Grade B, Type E, ASTM A53 steel (ERW) with welded joints.

Fittings: 2-1/2" & larger - Schedule 40 wrought steel ASTM

Std. B16.9 long radius welding.

2" & smaller - Wrought copper ASTM 16.18 95-5 solder-type fittings.

Flanges: Wrought steel Class 150 welding neck. ASTM

Standard B16.5. Gate Valves: 2-1/2" & larger - IBBM, 125 lb. non-shock, cast iron,

bronze trim, nickel plated steel stems, OS&Y, flanged. NIBCO F-617-O.


2" & smaller - 150 lb. threaded Bronze valves, rising stem, union bonnet, solid wedge. NIBCO T-134.

Globe Valves: 2-1/2" & larger - IBBM, 125 lb.std. flanged, outside

screw and yoke, cast iron with bronze trim. NIBCO F-718-B.

2" & smaller - Bronze 150 lb. heavy duty, threaded with union bonnet, plug type stainless steel disc. NIBCO F-918-B.

Check Valves: 2-1/2" & larger - IBBM, 125 lb.std. flanged swing

check, with bronze trim, bolted cap, and complies with MSS-SP-71. NIBCO F-918-B.

2" & smaller - 150 lb. Threaded, bronze disc, complies with MSS SP-80. NIBCO T-433-B.

Balancing Valves: DeZurik Series 100, or approved equal, stainless

steel bearings, nickel seats (3" and larger) non-lubricated, eccentric plug with chlorobutyl rubber or Bunz-N resilient faced plugs suitable for 250°F, semi-steel screwed with fig. 159, removable lever and oper. nut for valves 3" and smaller. For valves 4" and larger, provide gear operators and flanged connections. All valves shall have adjustable memory stop.

2" & smaller - Figure 120, bronze body. 2-1/2" & larger - Figure 118, cast iron body. 2. Condensate Drain: Pipe: 2” & smaller - All drain lines soft temper “K” below-

ground, hard temper Type “L” above-ground, ASTM B88-83a.

Fittings: Solder type wrought copper ASTM B16.8--95-5

silver solder or braze (lead and antimony based solders are prohibited) and ANSI BIL.12 hot dipped galvanized threaded ends and 125 lb. galvanized cast iron fittings or 150 lb. galvanized malleable iron ASTM B16.3.

Unions: 2” & smaller - wrought copper, ground joint solder

ends.


3. Refrigerant Piping: Piping: Seamless copper tube, ANSI H23.1, Type ACR,

Type L, hard temper. Fittings: Wrought copper solder joint fittings, ANSI B16.22,

brazed silver alloy solder equal to Sil-For, or Easy-Flow.

Valves: Shut-off valves, packless 1/4" through 1-1/8" equal

to Henry 626 Series, wing cap valves 1- 3/8" through 4-3/8" equal to Henry 203 Series.

B. Steel pipe shall be similar and equal to National Tube Company, Grinnell, Wheatland, Stockham, Weldbend, Republic, Bethlehem, or approved equal, black or zinc-coated (galvanized) as indicated. Pipe shall be free from all defects which may affect the durability for the intended use. Each length of pipe shall be stamped with the Manufacturer's name. Cast iron pipe shall be similar and equal to Charlotte, NIBCO, or approved equal conforming to Cast Iron Soil Pipe and Fitting Institute (CISPI). C. Copper pipe and tube shall be Revere, Anaconda, Chase, or approved equal with approved solder fittings. D. Welding fittings for steel pipe shall meet the requirements of ASTM Standard A-23 and shall be standard catalog products. Fittings fabricated by mitering and notching pipe will not be accepted. E. Factory-trained representative shall periodically inspect the product installation. Contractor shall remove and replace any improperly installed products. 2.2 PIPE HANGERS, ROLLER SUPPORTS, ANCHORS, GUIDES, AND SADDLES: A. Unless otherwise indicated, hangers for metallic piping shall be adjustable, wrought clevis type, or adjustable malleable split ring swivel type, having rods with machine threads. Hangers shall be Anvil Company's Figure 260 for pipe 3/4" and larger, and Figure 65 for pipe 1/2" and smaller, or approved equal. Adjustable pipe stanchion with U-bolt shall be Anvil Company's Figure 191. Pipe roller supports shall be Anvil Company’s Figure 181 or Figure 271. Exterior pipe hangers shall be galvanized construction. For copper piping in direct contact with the hanger, hanger construction shall be copper coated to prevent contact of dissimilar metals similar to Anvil Company’s Figure CT-65. Hanger spacing and rod sizes for steel and copper pipe shall not be less than the following for horizontal piping:


Nominal Pipe Size Inches

Maximum Span Feet Minimum Rod Diameter inches of ASTM A36 Steel Threaded Rods

Standard Steel Pipe Copper Tube

1 and smaller 6 5 3/8

1 - 1/4 6 5 3/8

1-1/2 6 5 3/8

2 10 8 3/8

2-1/2 10 8 1/2

3 10 8 1/2

4 10 8 5/8

5 10 8 5/8

6 10 8 3/4

8 10 8 7/8

10 10 8 7/8

12 10 8 7/8

B. For vertical piping of the following, materials shall be supported according to the Manufacturer's recommendations but not less than the distances listed below: 1. Steel threaded pipe - at base and at each story height. C. Saddles shall be Anvil Company’s Figures 160, 161, 162, 163, 164, 165, 165A, 166A, or approved equal. Shields shall be Anvil Company’s Figure 167, or approved equal. D. Riser clamps shall be Anvil Company’s Figure 261 or CT-121 or approved equal. E. Support heating water piping 2-1/2" and larger with adjustable steel yoke roller hangers. 2.3 VALVES: A. Refer to Paragraph 2.1 A for approved Manufacturers. Provide parts list and assembly drawings (exploded view) for all valves in shop drawing submittals. Provide valves of the same type by the same manufacturer.


B. Multi-Purpose Valve: Multi-purpose valve (non-slam check valve, throttling valve, shut-off valves and calibrated balancing valve). Multipurpose valve shall be suitable for horizontal or vertical installation. The valve shall be a bubble tight shut-off with plug type flow control and spherical brass clapper. The valve shall be provided with memory stops, pointer and scale. The valve shall be of heavy-duty cast iron construction bronze fitted with standard ANSI flanged connections for sizes 4 inch and larger and threaded for sizes 3 inches and smaller. Multipurpose valve shall be rated for a maximum working pressure of 175 psig at 240°F. The valve shall be fitted with a stainless steel stem or stem sleeve and brass seat with "O" ring seal. Valve shall be Taco "Plus One" Number 300-4.2 or Bell and Gossett 3DS Triple Duty Valve, or equal. 2.4 STRAINERS: A. Strainers shall be "Y" type and shall be heavy and durable, constructed of best grade gray iron with the bottoms drilled and plugged. Bodies shall have arrows clearly cast on the sides to show flow direction. Strainers shall be equipped with easily removable covers. Total area of basket perforations shall be not less than four times the cross section of the entering pipe. Flow shall be into basket, and then out through the perforations. Strainers shall be suitable for water or the intended fluid. Strainers 2 inches and smaller shall have threaded ends, 2-1/2 inches and larger shall have flanged ends. B. Strainer screens shall be stainless steel. Perforations in water lines shall be 1/16" diameter for pipe sizes 5 inches and less, 1/8" diameter (40% open area) perforations for pipe sizes 6" and greater. Perforations in steam lines shall be 0.033" through 2" pipe size and 0.045" for pipe sizes greater than 2". C. Provide valved and capped (with chain) blowdowns in each strainer. Blowdown valves shall be Appollo 78-100/200 series or approved equal. D. Schedule of Service:

Schedule of Service

1.

Non-Potable Water

2" and smaller Mueller No. 11-M

2-1/2" and larger Mueller No. 758

E. Strainers shall be manufactured by Watts, Mueller, Armstrong, Yarway, Spirax/Sarco or StreamFlo. 2.6 UNIONS: A. Unions in steel pipe shall be malleable iron with brass inserted seats designed for a working pressure of 150 psig.


B. Unions in copper pipe shall be sweat fittings with bronze seats designed for a working pressure of 125 psig. 2.5 MANUAL AIR VENTS: A. Manual air vents shall be similar to gauge valves specified hereinafter. Provide 1/4" size on 3/4" pipe and smaller, 1/2" size on 1" pipe and larger. Install at all high points of piping. Valves shall be Crane No. 88, or approved equal, with threaded ends, bronze body, bronze or brass bonnet, and bronze stem. 2.6 AUTOMATIC AIR VENTS: A. Provide at air separators, expansion tanks and where shown on the drawings, float actuated non-modulating high capacity air vent to purge free air from the system and provide a positive shut-off at pressures up to 150 psig at a maximum temperature of 250°F. The high capacity air vent shall prevent air from entering the system if the system pressure drops below atmospheric pressure. The air vent shall be pilot operated for intermittent purging of free air up to pressures of 2 psig during normal system operation and diaphragm operated for full capacity purging of free air at pressures between 2 and 150 psig. The high capacity air vent shall be constructed of cast iron and fitted with components of Type 313 stainless steel, brass, EPDM and silicone rubber. Pipe discharge to floor drains. The high capacity vent shall be Model 107 by Bell and Gossett, Model 13w by Spirax Sarco, Amtrol Model No. 720, Taco, Wheatley, or approved equal. 2.7 THERMOMETERS: A. Unless otherwise indicated, thermometers shall be in a glass type, mercury filled, 9-inch scale size, corrosion-resistant metal case, with "any-angle" mounting: Trerice Industrial Thermometers, Weksler Instruments, Ernst Gage Company, or approved equal. Insertion stem length shall suit the pipe size and configuration. Thermometer wells shall be brass with brass union hubs in copper and ferrous piping. Where piping is insulated or otherwise covered, use wells with lagging extension. Where wells are installed in pipe tees at turns, increase pipe size so that well does not restrict flow. B. Unless otherwise indicated, thermometer ranges shall be as follows: 1. Heating Hot Water: 30°F to 240°F, 2°F Div. C. Provide heat-conducting compound in wells. 2.8 FLOW METERS: A. Flow measuring fittings shall be Taco Series 7000 Sentinel Flow Metering System—Catalog 400-2.2, or approved equal. The probe shall sense both the total pressure (upstream) and the static pressure (downstream) and by use of the double averaging design shall maximize the accuracy of the flow measurement. The flow fitting locations shown on the plans are schematic and indicate flows required to be measured. Exact locations shall be such that the


straight pipe lengths required by the Manufacturer's installation instructions be adhered to and the location be accessible. Submittal data shall include a schedule showing flow fitting location, size, and GPM required. Each metering station is to be furnished with a balancing valve and a nameplate permanently attached with a brass chain. The pressure drop for each flow fitting shall not exceed one foot. The combined accuracy of the primary metering element and the readout instrument shall be within plus or minus 2% of actual flow. Copper Type L in-line stations 3/4 inches and less shall have brass fittings with solder connections. In-line stations of steel or brass 1-1/2 inches and less shall have threaded ends. Standard metering stations shall be utilized for piping 2 inches and greater. B. A Sentinel differential pressure gauge shall be supplied with carrying case and hoses. Accuracy shall be plus or minus 2% of full span. Connecting hoses shall be 12 feet in length with the terminal fittings to be SAE flare swivel for ease in connection. Additional readout meter shall be furnished for the circuit setters. Differential pressure gauge system shall be Taco Model No. 7007, Bell and Gossett or approved equal.2.12 PIPING SPECIALTIES: 2.9 DIELECTRIC CONNECTIONS: A. Furnish and install electrically insulated dielectric unions or flanges, as manufactured by Watts Regulator, EPCO Sales, Inc., or approved equal, at the following locations: 1. Where steel piping systems join copper piping. 2. Where copper tube connects to domestic water storage tanks, expansion tanks,

and other steel vessels. 3. Avoid the installation of steel nipples, cast iron or steel valves and specialties, or

other ferrous components in predominately copper piping systems. Where such installation is necessary, isolate the component with dielectric connections. Do not mix steel pipe and copper tube in the same run of pipe or in the same section of a piping system.

PART 3 - EXECUTION 3.1 PIPING, GENERAL: A. All pipes shall be cut accurately to measurements established at the building, and shall be worked into place without springing or forcing, properly clearing all windows, doors and other openings. Excessive cutting or other weakening of the building structure to facilitate piping installation will not be permitted. All pipes shall be so installed as to permit free expansion and contraction without causing damage. Horizontal sanitary and storm water piping shall pitch a minimum of 1/4 inch per foot. All open ends of pipe lines, equipment, etc., shall be properly capped or plugged during installation to keep dirt or other foreign material out of the system. All pipes shall be run parallel with the lines of the building and as close to walls, columns and ceilings as may be practical, with proper pitch. All piping shall be arranged so as not to interfere with removal of other equipment on devices not to block access to doors, windows, manholes, or other access openings. Flanges or unions, as applicable for the type of piping specified, shall be provided in the piping at connections to all items of equipment, coils, etc., and installed so


that there will be no interference with the installation of the equipment, ducts, etc. All valves and specialties shall be placed to permit easy operation and access and all valves shall be regulated, packed and glands adjusted at the completion of the work before final acceptance. All piping shall be installed so as to avoid air or liquid pockets throughout the work. Ends of pipe shall be reamed so as to remove all burrs. B. All heating water piping shall be graded to convey entrained air to high points where automatic air vents shall be provided. The size of supply and return pipes for each piece of equipment shall in no case be smaller than the outlets in the equipment. C. All piping shall be run to provide a minimum clearance of 1/2" between finished covering on such piping and all adjacent work. D. All valves, strainers, caps, and other fittings shall be readily accessible E. Rough-in and final connections are required to all equipment and fixtures provided under this Contract. F. Drain valves with hose connections shall be provided at low points for drainage of piping systems. Blow down valves shall be provided at the ends of all mains and branches so as to properly clean by blowing down the lines throughout in the direction of normal flow. Blow down valves shall be provided with cap and chain. I. Cutoff valves shall be provided on each branch line from the mains on all heating/air conditioning lines serving two or more units. J. Shut-off valves shall be installed at the inlet and outlet of each coil, control valve, and piece of equipment to permit isolation for maintenance and repair. Units having multiple coils shall have separate valves for each coil. K. Balancing valves shall be installed in all heating/air conditioning water branches, at all pumps, where required for balancing, and where indicated on the drawings. L. Unions shall be installed on all bypasses, at all connections to equipment and control valves, where shown on drawings, or where required to facilitate removal of equipment whether shown or not. M. If the size of any piping is not clearly evident in the drawings, the Contractor shall request instructions for the Engineer as to the proper sizing. Any changes resulting from the Contractor's failure to request clarification shall be at his expense. Where pipe size discrepancies exist within the drawings, the larger pipe size shall govern. 3.2 PIPE JOINTS: A. Welded Joints: Joints in piping 2" and smaller shall be socket welded. Welding shall be in accordance with recommendations of the American Welding Society. Welding fittings shall conform in physical and chemical properties to the latest revisions of the American Society for Testing Materials.


B. Qualify welding procedures, welders, and operators in accordance with ASME B31.1, or ASME B31.9 as applicable, for shop and project site welding of piping work. Certify welding of piping work using Standard Procedure Specifications by, and welders tested under supervision of, National Certified Pipe Welding Bureau (NCPWB). Submit welders' qualifications for approval. C. Screwed Joints: All screwed joints shall be made with tapered threads properly cut. Screwed joints shall be made perfectly tight with a stiff mixture of graphite and oil, applied with a brush to the male threads on the fittings. D. Soldered Joints and Copper Piping: Joints in copper piping shall conform to the following minimum standards. 1. The pipes shall be cut to a length making certain that the ends are square, using

a fine hacksaw blade or tube cutter. The ends of all pipes shall be reamed and all burrs removed.

2. The outside end of the pipe and the cut end of the fitting shall be cleaned with

steel wool, sand cloth, or steel wire brush. All dark spots shall be removed. 3. The flux shall be applied evenly and liberally to the outside end of the pipe and

the inside of the outer end of the fitting until all surfaces to be jointed are completely covered. The piping and fitting shall be slipped together and reworked several times to insure an even distribution of the flux.

4. The correct amount of solder per joint for each size pipe shall be used in

accordance with the Manufacturer's recommendations. 5. Solder joints shall be made by using a direct flame from a torch. 6. On pipe sizes larger than 1/4", the fittings and valves in the pipe shall be moved

or tapped with a hammer when the solder starts to melt to insure an even distribution of the solder.

7. The excess solder shall be removed while it is still in the plastic state leaving a

fillet around the cup of the fitting. 8. Solder joints shall be suitable for working pressure of 100 psig and for working

temperature of not less than 250ºF. The type of solder and flux used will be submitted for approval. Type 95-5 shall be the minimum standard.

E. Where copper piping joins steel piping, approved bronze adapters shall be used. F. Prohibited Connections: No direct weld, soldered, or brazed connections, without unions or flanges, shall be made to valves, strainers, apparatus, or related equipment. Right and left couplings, long threads, or caulking of pipe threads or gasket joints will not be permitted.


3.3 HANGERS, SUPPORTS, ANCHORS, GUIDES: A. General: All hangers shall be of an approved type arranged to maintain the required grading and pitching of lines to prevent vibration and to provide for expansion and contraction. Provide protection saddles between hangers and insulation on insulated pipe supported on rollers. Provide insulation protection shields for insulated piping without saddles. B. Spacing: Regardless of spacing, hangers shall be provided at or near all changes in direction, both vertical and horizontal, for all piping. For cast iron soil pipe, one hanger shall be placed at each hub or bell. C. Vertical Lines: Shall be supported at their bases, using either a suitable hanger placed in a horizontal line near the riser, or a base type fitting set on a pedestal, foundation or support. All vertical lines extending through more than one floor level shall be supported at each floor with a riser clamp. All vertical drops to pump suction elbows shall be supported by floor posts. D. Racks and Brackets: All horizontal piping on vertical walls shall be properly supported by suitable racks securely anchored into the wall construction. Where not practical to obtain ceiling anchorage, all piping near walls shall be supported by approved brackets securely anchored into the wall construction. Washer plates and other miscellaneous attachments, fasteners, etc., shall be Grinnell, or approved equal. All exterior hanger and bracket systems in their entirety shall be galvanized. E. Pipe Hangers and supports shall be attached to the panel point at the top chord of bar joist or at a location approved by the structural engineer. F. Select hangers and components for loads imposed. Secure rods with double nuts. G. Support of horizontal piping shall allow for vertical adjustment after installation of piping. H. Support overhead piping with clevis hangers. Support heating water piping 2-1/2" and larger on adjustable steel yoke roll hangers. 3.4 AIR VENTING: A. The top of each heating water supply and return riser, all other high points in the heating water supply and return piping, and other points as indicated or where necessary for the removal of air from the system or equipment shall be vented using an approved type of manual air vent. B. In addition to manual air vents at high points of system, each item of water heat transfer equipment shall be manually vented using an approved type manual air vent. All air vents shall be accessible. 3.5 VALVE IDENTIFICATION: A. All valves shall be identified with the appropriate service designation and valve number identification on brass valve tags. Each valve tag shall be 19 gauge brass and 1-1/2" diameter


with 1/4" black-filled letters over 1/2" black-filled numbers. Tags shall be fastened to valves with brass jack chains. Brass tags and fasteners shall be manufactured by Seton Name Plate Company, Champion-America, Inc. or approved equal. B. Valve tag numbers shall agree with valve numbers on diagrammatic hereinbefore specified. C. Provide a minimum of two (2) valve charts with valve numbers indicating valve number, location, purpose, valve type, size, manufacturer and service. Valve numbers shall start after the last valve number of the existing building. D. Valve charts shall be mounted behind glazed, wooden or aluminum frames (Style A116) and be hung as directed by the Owner. One (1) additional chart shall be provided for use in a plastic protective envelope (Style P8511). Additional copies shall be provided in each copy of the O&M Manuals. Valve chart frames and envelopes shall be manufactured by Seton Name Plate Company or approved equal. 3.6 CLEANING PIPING AND EQUIPMENT: A. The entire heating water piping systems shall be cleaned by filling with a solution of one (1) pound of tri-sodium phosphate to each 50 gallons of water and circulating this solution for a period of six (6) hours during which time the system shall reach operating temperature. The systems shall then be flushed with fresh water and refilled with fresh water and/or glycol solution and purged of all air.

END OF SECTION

GAI#13034.A Insulation June, 2015 15300-1

DIVISION 15 - MECHANICAL SECTION 15300 - INSULATION PART 1 - RELATED DOCUMENTS 1.1 REFERENCE: A. All work under this Section is subject to the requirements of Section 15100, "General Mechanical Requirements". 1.2 DESCRIPTION: A. All piping and ductwork installed under this Contract shall be covered as specified. PART 2 - PRODUCTS 2.1 GENERAL: A. All materials to be insulated shall be thoroughly cleaned, after completion of successful tests, and shall be covered as specified below. Insulation shall be Owens-Corning Fiberglass, Manville, Armstrong, P.P.G, or Knauf. B. In the absence of specific requirements, insulation shall conform to ASHRAE Standard 90.1, latest edition. 2.2 PIPE INSULATION MATERIALS: A. Type A - Sectional Molded Fibrous Glass: 1. Insulation shall be one piece or half sectional molded fibrous glass with "K" of 0.24 at

75oF mean temperature, for services for -60oF to +450oF minimum density of 1.5 lb./cu.ft.

2. Pipe insulation jacket shall be factory-applied vinyl coated, embossed and reinforced

vapor barrier laminate, with a perm rating of not more than 0.02 perms. All hot and cold, concealed and exposed butt strips shall be of the same material as jacket. Jacket and butt strips shall be sealed with field-applied Benjamin Foster adhesive. Jacket and butt strips shall be off-white color and shall be equivalent to Owens-Corning Fiberglass 25-ASJ.

3. For fittings on piping, valves and flanges, apply fiberglass molded or segmented

insulation equal in thickness to the adjoining insulation and securely fasten in place using wire. Apply a skin coat of insulating cement to produce a smooth surface. After cement is dry, apply a light coat of fitting mastic, UL labeled, Type C, for cold water piping, and Type H for hot water piping. Wrap fitting with fiberglass reinforcing cloth overlapping adjoining sections of pipe insulation by 2". Apply a second coat of Type C or Type H mastic over the reinforcing cloth, working it to a smooth finish. As an option to the above fittings, a polyvinyl chloride fitting cover may be supplied.


4. All pipe insulation, jackets, or facings, and adhesives used to adhere jacket or facing

to the insulation, including fittings and butt strips, shall have non-combustible fire and smoke hazard system rating and label as tested by ASTM E-84, NFPA 225, and UL 73 not exceeding Flame Spread 25, Fuel Contributed 50, Smoke Developed 50. Accessories such as adhesives, mastic cements, tapes and cloth for fittings shall have the same ratings as listed above. All products or their shipping cartons shall bear the Underwriter's label indicating that flame and smoke ratings do not exceed the above criteria.

5. Insulation shall be installed in accordance with Manufacturer's recommendations. B. All concealed pipe insulation shall be held in place with 3/4" wide aluminum bands. Bands shall be spaced to hold the ends and center of each section, and in no case shall the spacing exceed 18". Bands shall not be used on exposed work. C. For piping having vapor barrier insulation and for all insulated piping requiring supports, hangers and supports shall be installed outside the insulation. Wherever hangers and supports are installed outside the insulation, pipe insulation protecting shields shall be provided. Where insulation is a load bearing material, of sufficient strength to support the weight of the piping, pipe shields one-third the circumference of the insulation and of a length not less than three times the diameter of the insulation (maximum length 24") shall be provided. Insulation of 7-1/4 pound or greater density will be considered as load bearing for pipe sizes up to and including 2". Where insulation is not of sufficient strength to support the weight of the piping, a half section of calcium silicate insulation, such as Kaylo, shall be provided. Vapor barrier and finish shall be applied as required to match adjoining insulation. In addition, shields shall be furnished as specified above. D. For piping located outside of the building and within rooftop air handling units an aluminum weatherproof jacketing system shall be provided. This system shall be Polyweld by Pabco Metals Corp., Childers, Manville, or as approved equal, and installed per the Manufacturer's recommendations. Pipe jacketing shall be corrugated (3/16") deep aluminum, .016" thickness of H-14 temper with aluminum strapping of .75 inch wide and .020 inch thickness. Aluminum jacketing elbows shall be smooth, .016" thickness and 1100 alloy. All jacketing shall have an integrally bonded moisture barrier over the entire surface in contact with the insulation. Caulk all joints and install per Manufacturer's recommendations. 2.3 PIPING:

A. Service:

THICKNESS

Type A

Heating Water Piping 2-1/2" & Larger 1-1/2"

Heating Water Piping 2" & Smaller 1"

Drain Piping from Cooling Coils 1/2"


B. For piping outdoors, in outdoor air handlers, or pipe enclosures which are integral to outdoor air handlers, increase pipe insulation by 1” thickness and finish with aluminum metal jacket. 2.4 DUCTWORK: A. Insulate all supply and return ductwork with fiberglass exterior duct insulation with factory-applied foil facing. Exposed fiberglass duct insulation shall be rigid or non-flexible board type 5.0 pcf minimum density, 0.25 max. "K" factor, with white vinyl A.S.J. vapor barrier facing. All other concealed fiberglass duct insulation shall be flexible blanket type, 1.0 pcf minimum density. All concealed insulation shall have 0.20 max. "K" factor, with reinforced foil-skin-Kraft vapor barrier facing. Tightly butt all edges and seams. Secure insulation with flush mechanical fasteners spaced not less than one per square foot. B. Exposed fiberglass duct insulation: Tightly butt all edges and seams. Secure insulation with flush mechanical fasteners spaced not less than one per square foot. Insulation may be secured with 100% coverage of adhesive with mechanical fasteners on the underside of the duct only, in addition to adhesive. Cover all seams, joints and fasteners with not less than 3" wide tape matching the insulation facing. Pre-finished white fastener caps may be left exposed if the spacing and pattern is uniform in appearance. Staples will not be permitted. C. Outdoor ductwork shall be additionally covered with an aluminum jacket to protect from weather. Aluminum Jacket shall comply with ASTM B 209 (ASTM B 209M), Alloy 3003, 3005, 3105, or 5005, Temper H-14. Sheet and roll stock ready for shop or field sizing. Finish shall be stucco embossed with a thickness not less than 0.040 inch (1.0mm). Shall include a moisture barrier 3-mil- (0.075-mm-) thick, heat-bonded polyethylene and kraft paper. D. Schedule of Application:

Insulation

Thickness

Supply Air 50°F and Greater 2”

Less than 50°F 3"

Return Air 2"

Outdoor Air 2"

Field-Fabricated Plenum/Casings 2"

PART 3 - EXECUTION 3.1 WORKMANSHIP: A. The Contractor shall take special care to prevent soiling equipment below or adjacent to areas being insulated. He shall be completely responsible for removing insulation cement splashes


and smears and all surfaces that he mars or otherwise soils or defaces, and he will be totally responsible for restoring these damaged surfaces to their like-new condition when delivered to the site. 3.2 INSULATION COVERING: A. All exposed insulation shall have an 8 oz. canvas cover neatly cut and pasted over the insulation. Covers shall be painted, color-coded, and stenciled in accordance with the requirements of Sections 15100. Exposed areas include, but are not limited to, all mechanical equipment rooms, gymnasiums, natatorium, lobbies, classrooms, locker rooms, corridors and piping and/or ductwork exposed in an occupied space. 3.3 INSTALLATION: A. In the absence of specific requirements, installation of insulation shall conform to Midwest Insulation Contractors Association (MICA), “COMMERCIAL AND INDUSTRIAL INSULATION STANDARDS MANUAL”.

END OF SECTION

GAI#13034.A Performance Testing & Balancing June, 2015 15500-1

DIVISION 15 - MECHANICAL SECTION 15500 - PERFORMANCE TESTING & BALANCING PART 1 - GENERAL 1.1 GENERAL: A. All work under this section is subject to the requirements of Section 15100 "General Mechanical Requirements". B. This section covers performance testing and balancing of heating, ventilation, air conditioning systems and all hydronic systems. C. All testing and balancing shall be performed by an independent test and balance agency that specializes in and whose business is limited to the testing and balancing of mechanical systems. The agency must have membership in the "Associated Air Balance Council" and have a Professional Engineer certified by the National Examining Board and licensed in the State of Maryland. All final reports shall be signed and officially stamped by the certified test and balance engineer. D. Acceptable Agencies: Weisman Inc., Baltimore Air Balance Company, Baumgartner, Inc., American Testing, Chesapeake Testing & Balancing, Inc., Environmental Balancing Corporation, Testing & Balancing, Inc., or approved equal of AABC or NEBB. PART 2 - PRODUCTS This part not used. PART 3 - EXECUTION 3.1 REQUIREMENTS: A. Test and balance all heating, ventilating, air conditioning and hydronic systems. The work shall include, but not be limited to, the following: B. Leak-test all ductwork and air distribution systems, in accordance with requirements specified in Section 15700. C. Test the capacity and performance of all equipment and adjust to design conditions. D. Balance and adjust all air distribution systems to within 5% of design air quantities including maximum and minimum heating, cooling, and setpoints of air handling units, variable air volume boxes, and fan-coil units. E. Balance and adjust all water systems for design capacities or flow rates. Adjust variable flow pumps and differential pressure controls to the minimum differential pressure that will achieve design flow rates.


E. Adjust all fans to required speeds for design air flow including changing sheaves and drives. Adjust variable volume fans and static pressure controls to the minimum static pressure setpoint that will achieve design air flow rates. F. Test the capacity and performance of all equipment and adjust to design conditions. G. Operate and test all systems under all sequences of operation and adjust equipment and controls for efficient and stable operation. I. Test and balance all systems under adequate heating and cooling load conditions. If, in the opinion of the Engineer, there is insufficient load to properly test and balance the systems, perform sufficient preliminary balancing and adjustment to permit operation of the systems until such time as final testing and balancing can be accomplished under adequate load. J. Retest or rebalance the systems as required during the guarantee period. 3.2 COORDINATION BY THE MECHANICAL CONTRACTOR: A. Coordinate the testing and balancing work with the work of other trades. B. Furnish complete and up-to-date contract documents, shop drawings, installation and coordination drawings, submittal data, and other information to the testing and balancing agency so that the work is performed using all required system and equipment data. C. Plan and schedule testing and balancing at required times during construction. Review all plans, schedules and procedures with the Engineer before proceeding. D. Prepare all systems for testing and balancing. Provide clean filters in all air systems and clean strainers and traps in the piping systems. Provide final flushing of piping systems if required. E. Make all necessary adjustments and repairs to the work, correcting any malfunctions or deficiencies which are disclosed by testing and balancing. 3.3 PROCEDURES: A. Perform all testing and balancing in complete accordance with AABC National Standards for Field Measurement and Instrumentation, Form No. 81266, Volume One. B. Furnish all test instruments and equipment. All instruments must have been calibrated within six (6) months prior to use and shall be checked for accuracy prior to and during the work. C. Review all system designs and equipment manufacturer's data and be completely familiar with the work before proceeding. D. Plan all operations and procedures and review with the Engineer before proceeding. Make system layouts and diagrams where required.


E. Inspect all systems and determine that the work is complete and ready for testing and balancing before proceeding. F. Maintain complete and accurate records of all test results showing initial and final conditions. Record all temperatures, pressures, flows, speeds, current and voltages, control settings, ambient conditions, time, date and other pertinent data. G. Report all malfunctions or deficiencies to the Contractor so that corrective action can be taken. Repeat tests where required until design conditions are achieved. H. Where systems or equipment cannot be balanced or adjusted to design conditions, determine the cause and submit a complete report to the Engineer. I. Upon completion of the work and before final acceptance, submit six (6) copies of a complete testing and balancing report to the satisfaction of the Engineer. J. If, in the opinion of the Engineer, test results or portions thereof are incomplete or inconclusive, repeat necessary portions of the work to the satisfaction of the Engineer. 3.4 REPORTS A. Report format: Bind the report with a waterproof front and back cover. Include a table of contents identifying by page number the location of each report. Final report forms and report data shall be typewritten. Handwritten report forms or report data are not acceptable. B. Temperatures: On each TAB report form reporting TAB work accomplished on HVAC thermal energy transfer equipment, include the indoor and outdoor dry bulb temperature range and indoor and outdoor wet bulb temperature range within which the TAB data was recorded. Include in the TAB report continuous time versus temperature recording data of wet and dry bulb temperatures for the rooms, or zones, as designated in the following list:

1. Each classroom, office, locker room, showers, toilet rooms, lobbies and corridors. 2. Natatorium, all four (4) corners.

3. Handball courts, one (1) location each space. 4. Data shall be measured and compiled on a continuous basis for the period in

which TAB work affecting those rooms is being done.

5. Data shall be measured/recorded only after the HVAC systems installations are complete, the systems fully balanced and the HVAC systems controls operating in fully automatic mode.

6. Data may be compiled using direct digital controls trend logging where available.

Otherwise, the Contractor shall temporarily install calibrated time versus temperature/humidity recorders for this purpose. The HVAC systems and controls shall have been fully operational a minimum of 24 hours in advance of commencing data compilation.


C. Static Pressure Profiles: Report static pressure profiles for air duct systems. Report static pressure data for all supply, return, relief, exhaust and outside air ducts for the systems listed. The static pressure report data shall include, in addition to NEBB/AABC required data, the following:

1. Report supply fan, return fan, relief fan, and exhaust fan inlet and discharge static

pressures. 2. Report static pressure drop across the hot water coils, and heat reclaim devices

installed in unit cabinetry. 3. Report static pressure drop across outside air, return air, and supply air automatic

control dampers, both proportional and two-position, installed in unit cabinetry, or in the system ductwork.

4. Report static pressure drop across air filters, air flow measuring stations or other

pressure drop producing specialty items installed in unit cabinetry, or in the system ductwork. Examples of these specialty items are smoke detectors, white sound generators, RF shielding, wave guides, security bars, blast valves, small pipes passing through ductwork, and duct mounted humidifiers. Do not report static pressure drop across duct fittings provided for the sole purpose of conveying air, such as elbows, transitions, offsets, plenums, manual dampers, and branch takes-offs.

5. Report static pressure drop across outside air and relief/exhaust air louvers. 6. Report supply, return, exhaust/relief, outside air duct static pressure readings,

including the following locations:

a. Main Duct: Take readings at four locations along the full length of the main duct. Locations shall be at 25 percent, 50 percent, 75 percent, and 100 percent of the total duct length.

b. Branch Main Ducts: Take readings at branch main ducts. c. VAV Terminals: Take readings at inlet static pressure at VAV terminal box

primary air branch ducts.

7. Report static pressure setpoints for variable volume systems.

D. Duct Transverses: Report duct traverses for main and branch main supply, return, exhaust, relief and outside air ducts. This shall include all ducts, including those which lack 7 1/2 duct diameters upstream and 2 1/2 duct diameters downstream of straight duct unobstructed by duct fittings/offsets/elbows. The TAB Agency shall evaluate and report findings on the duct traverses taken. Evaluate the suitability of the duct traverse measurement based on satisfying the qualifications for a pitot traverse plane as defined by AMCA 203, "Field Measurements", Section 8, paragraph 8.3, "Location of Traverse Plane." E. Hydronic Systems:


1. Report differential set points for variable flow systems. 2. Report pressure drop across pumps, coils, and control elements. 3. Report pressure profiles for hydronic systems. E. Instruments: List the types of instruments actually used to measure the tab data. Include in the listing each instrument's unique identification number, calibration date, and calibration expiration date. Instrumentation, used for taking wet bulb temperature readings shall provide accuracy of plus or minus 5 percent at the measured face velocities. Submit instrument manufacturer's literature to document instrument accuracy performance is in compliance with that specified. F. Certification: Include the typed name of the TAB supervisor and the dated signature of the TAB supervisor. G. Performance Curves: The TAB Supervisor shall include, in the Certified TAB Reports, factory pump curves and fan curves for pumps and fans TAB'd on the job H. Calibration Curves: The TAB Supervisor shall include in the Certified TAB Reports, a factory calibration curve for installed flow control balancing valves, flow venturis and flow orifices TAB'd on the job, with design and balance points indicated. END OF SECTION

GAI#13034.A Heating, Ventilating, and Air Conditioning June, 2015 15600-1

DIVISION 15 - MECHANICAL SECTION 15600 - HEATING, VENTILATING, AND AIR CONDITIONING PART 1 - SUMMARY 1.1 GENERAL: A. All work under this section is subject to the requirements of Section 15100, "General Mechanical Requirements". B. All equipment shall meet minimum efficiency standards established by ASHRAE Standard 90.1, latest edition, and the Maryland Energy Efficiency Standards Act (MDEESA). 1.2 DESCRIPTION: A. The work to be performed shall include all labor, materials and equipment necessary to furnish and install complete, all mechanical equipment as shown on drawings, hereinafter specified or reasonably implied, and leaving the same in satisfactory operating condition. It is the intent that systems be installed complete with all items necessary to accomplish this purpose. PART 2 - PRODUCTS 2.1 PUMPS: A. Base-Mounted Pumps -- End Suction:

1. Furnish and install base-mounted centrifugal end suction pumps to circulate hot water, condenser water, glycol, and chilled water to the various items of equipment throughout the building, associated with the HVAC System. Pumps shall have sizes and capacities as indicated on the Drawings.

2. All pumps shall be suitable for the service and temperatures designated and shall

conform to the following requirements.

3. Pumps shall be cast iron bronze fitted and shall be suitable for up to 125 psi working

pressure and up to 250F water temperature. Pumps shall have center-line discharge for positive venting, flanged bodies, and same size suction and discharge. Pumps shall incorporate a grease lubrication system and be so designed that the bearing assembly can be removed in one piece. A water slinger shall be provided between the mechanical seal and bearing areas. Pump shafts shall be carbon steel with an AISI 1045 carbon steel sleeve, and be coupled to the motor shaft by a noiseless non-metallic coupler with guard. Impellers shall be one-piece cast bronze, dynamically balanced. Motors shall be 1750 rpm, or as indicated on the Drawings.

4. Pumps shall be designed so that they shall not overload at low heads and shall not

develop excessive pressure under throttled flow conditions or overload anywhere on the operating curve. Brake horsepower at specified conditions shall not exceed 78% of motor nameplate horsepower times service factor. Horsepower at any flow with


selected impeller shall not exceed motor nameplate horsepower times service factor. Operating performance curves shall be submitted for approval. Provide gauge tappings on each pump flange. Furnish dust caps at all oil fill tubes.

5. Units shall be provided with motors of not less than the horsepower indicated,

suitable for the service and available electrical characteristics. Units shall be controlled as hereinafter specified. After installation and prior to operation, each pump shall be aligned. Motors shall be as specified hereinbefore. Motor and variable speed controller shall be by the same manufacturer.

6. Impeller diameter shall not exceed 85% of the volute cutwater diameter. Maximum

cataloged impeller size shall be rated to produce at least 110% of the specified head at specified flow.

7. Pumps shall be manufactured by Taco, Armstrong, Patterson, Weinman, Thrush,

Bell and Gossett, or as approved equal. 2.2 VARIABLE SPEED DRIVE: A. Provide variable speed drive controllers for Air Handling Unit Supply and Return Fans, Pumps, and elsewhere, as indicated. B. The adjustable frequency controller (AFC) shall convert three-phase 60 Hertz utility power to adjustable voltage and frequency, three-phase, AC power for stepless motor control from 5% to 110% of base speed. C. The AFC shall be a voltage source type with a PWM output utilizing power transistor semi-conductors. D. The AFC, together with all options and modifications shall mount within a standard NEMA 1

enclosure suitable for continuous operation at ambient temperature of 0C to 40C with relative humidity to 95% non-condensing. All high voltage components within enclosure shall be isolated with steel covers. The complete unit shall be UL Approved and UL Labeled. E. Circuits shall provide DV/DT and DI/DT protection for semi-conductors. AFC shall be capable of starting into a rotating load without delay. Protective circuits shall cause instantaneous trip (IET) should any of the following faults occur:

1. One hundred ten percent of controller maximum sine wave current rating is exceeded.

2. Output phase-to-phase and phase-to-ground short circuit condition.

3. High input line voltage.

4. Low input line voltage.

5. Loss of input phase.


6. External fault. This protective circuit shall permit, by means of the terminal strip, wiring of remote NC safety contacts such as high static, firestat, etc., to shut down the drive.

F. The following adjustments shall be available in the controller and retained in non-volatile memory:

1. Maximum frequency (15 to 400 Hz) factory set at 60 Hz.

2. Minimum frequency (3 to 60 Hz) factory set at 6 Hz.

3. Acceleration (.1 to 360 seconds) factory set at 20 seconds.

4. Deceleration (.1 to 360 seconds) factory set at 20 seconds.

5. Volts/Hertz ratio factory set for 460V at 60 Hz.

6. Voltage offset or boost factory set at 100% torque.

7. Current limit (50% to 110% sine wave current rating) factory set at 100% current. G. The AFC shall have the following basic features:

1. Door-mounted operator’s controls consisting of a membrane command center

which allows manual stop/start and speed control, local/remote indication and manual/or automatic speed control selection. In addition, the command center will serve as a means to configure controller parameters such as minimum speed, maximum speed, acceleration and deceleration times, volts/Hz ratio, torque boost, etc. Potentiometers will not be allowed for these settings.

2. Main input disconnect to provide a positive disconnect between the controller and all

phases of the incoming A-C line. This disconnect shall be mounted inside the controller enclosure and have through-the-door interlocking toggle with provisions for padlocking.

3. Electronic motor overload relay.

4. Automatic restart after power outage, drive fault, or external fault, with drive in

automatic mode. The circuit shall allow the user to select up to ten (10) restart attempts as well as the dwell time between attempts. The reset time between fault occurrences shall also be selectable. All settings shall be via the membrane command center.

5. Door-mounted LED display for digital indication of:

a. Frequency output.

b. Voltage output.

c. Current output.


d. First fault indication.

6. Relay contacts for remote indication of drive fault and motor finning.

7. Smoke purge circuit to enable user-supplied N.C. contacts to force controller to a

preset adjustable speed when opened.

8. Three critical frequency avoidance bands, field-programmable via the membrane command center. Each critical frequency avoidance band shall have a bandwidth adjustable via keypad entry of up to 10 Hz.

9. Three programmable preset speeds which will force the AFC to a preset speed upon

a User contact closure.

10. Isolated process follower to enable VFC to follow a 4-20 mA signal.

11. The AFC shall have the capability to ride through power dips up to 500 msec without a controller trip depending on load and operating condition.

J. The VFC and all components shall be supplied within a single NEMA 1 enclosure, and shall be UL Listed as a single unit. K. The VFC Manufacturer shall maintain and staff nationwide service centers. These service engineers shall be employed by the Manufacturer and provide start-up service, including physical inspection of drive and connecting wiring and final adjustments to meet specified performance requirements. L. The VFC shall carry a full parts and labor warranty for two years from the date of Owner-acceptance of the equipment. M. The variable speed drive manufacturer shall be the manufacturer of the motors supplied with the associated equipment. Coordinate with the equipment manufacturers. N. The variable speed drive shall be Reliance VTAC VII, or approved equal of Cutler Hammer, Toshiba, or ABB. 2.3 ROOFTOP AIR HANDLING UNITS:

A. General Description

1. Packaged rooftop unit shall include compressors, evaporator coils, filters, supply fans, dampers, air-cooled condenser coils, condenser fans, hot water coils, exhaust fans, energy recovery wheels, and unit controls.

2. Unit shall be factory assembled and tested including leak testing of the DX coils, leak testing of the hot water coils, pressure testing of the refrigeration circuit, and run testing of the completed unit. Run test report shall be supplied with the unit in the service compartment’s literature pocket.

3. Unit shall have decals and tags to indicate lifting and rigging, service areas and


caution areas for safety and to assist service personnel.

4. Unit components shall be labeled, including pipe stub outs, refrigeration system components and electrical and controls components.

5. Estimated sound power levels (dB) shall be shown on the unit ratings sheet.

6. Installation, Operation and Maintenance manual shall be supplied within the unit.

7. Laminated color-coded wiring diagram shall match factory installed wiring and shall be affixed to the interior of the control compartment’s hinged access door.

8. Unit nameplate shall be provided in two locations on the unit, affixed to the exterior of the unit and affixed to the interior of the control compartment’s hinged access door.

B. Construction

1. All cabinet walls, access doors, and roof shall be fabricated of double wall, impact resistant, rigid polyurethane foam panels.

2. Unit insulation shall have a minimum thermal resistance R-value of 13. Foam insulation shall have a minimum density of 2 pounds/cubic foot and shall be tested in accordance with ASTM D1929-11 for a minimum flash ignition temperature of 610°F.

3. Unit construction shall be double wall with G90 galvanized steel on both sides and a thermal break. Double wall construction with a thermal break prevents moisture accumulation on the insulation, provides a cleanable interior, prevents heat transfer through the panel, and prevents exterior condensation on the panel.

4. Roof of the air tunnel shall be sloped to provide complete drainage. Cabinet shall have rain break overhangs above access doors.

5. Access to filters, dampers, cooling coils, exhaust fans, energy recovery wheels, compressors, and electrical and controls components shall be through hinged access doors with quarter turn, zinc cast, lockable handles. Full length stainless steel piano hinges shall be included on the doors.

6. Exterior paint finish shall be capable of withstanding at least 2,500 hours, with no visible corrosive effects, when tested in a salt spray and fog atmosphere in accordance with ASTM B 117-95 test procedure.

7. Units with cooling coils shall include double sloped 304 stainless steel drain pans.

8. Unit shall be provided with base discharge and return air openings. All openings through the base pan of the unit shall have upturned flanges of at least 1/2 inch in height around the opening.

9. Unit shall include lifting lugs on the top of the unit.


10. Unit base shall be fabricated of 1 inch thick double wall, impact resistant, rigid polyurethane foam panels.

C. Electrical

1. Unit shall be provided with standard power block for connecting power to the unit.

D. Supply Fans

1. Unit shall include direct drive, unhoused, backward curved, plenum supply fans.

2. Blowers and motors shall be dynamically balance and mounted on rubber isolators.

3. Motors shall be premium efficiency ODP with ball bearings rated for 200,000 hours service with external lubrication points.

4. Variable frequency drives shall be factory wired and mounted in the unit. Fan motors shall be premium efficiency.

E. Exhaust Fans

1. Exhaust dampers shall be sized for 100% relief.

2. Fans and motors shall be dynamically balanced.

3. Access to exhaust fans shall be through double wall, hinged access doors with quarter turn lockable handles.

4. Unit shall include direct driven, unhoused, backward curved, plenum exhaust fans.

F. Cooling Coils

1. Evaporator Coils

a. Coils shall be designed for use with R-410A refrigerant and constructed of copper tubes with aluminum fins mechanically bonded to the tubes and galvanized steel end casings. Fin design shall be sine wave rippled.

b. Coils shall have interlaced circuitry and shall be standard capacity.

c. Coils shall be helium leak tested.

d. Coils shall be furnished with factory installed thermostatic expansion valves.

G. Refrigeration System

1. Unit shall be factory charged with R-410A refrigerant.

2. Compressors shall be scroll type with thermal overload protection, independently circuited and carry a 5 year non-prorated warranty, from the date of original equipment shipment from the factory.


3. Compressors shall be mounted in an isolated service compartment which can be accessed without affecting unit operation. Lockable hinged compressor access doors shall be fabricated of double wall, rigid polyurethane foam injected panels to prevent the transmission of noise outside the cabinet.

4. Compressors shall be isolated from the base pan with the compressor manufacturer’s recommended rubber vibration isolators, to reduce any transmission of noise from the compressors into the building area.

5. Each refrigeration circuit shall be equipped with thermostatic expansion valve type refrigerant flow control.

6. Each refrigeration circuit shall be equipped with automatic reset low pressure and manual reset high pressure refrigerant safety controls, Schrader type service fittings on both the high pressure and low pressure sides and a factory installed replaceable core liquid line filter driers.

7. Unit shall include a variable capacity scroll compressor on the lead refrigeration circuits which shall be capable of modulation from 10-100% of its capacity.

H. Condensers

1. Air-Cooled Condenser

a. Condenser fans shall be a vertical discharge, axial flow, direct drive fans.

b. Coils shall be designed for use with R-410A refrigerant and constructed of copper tubes with aluminum fins mechanically bonded to the tubes and aluminum end casings. Fin design shall be sine wave rippled.

c. Coils shall be designed for a minimum of 10°F of refrigerant sub-cooling.

d. Coils shall be helium leak tested.

I. Heating Coils

1. Hot Water Heating Coils

a. Coils shall be certified in accordance with AHRI Standard 410 and be leak tested.

b. Coils shall be constructed of copper tubes with aluminum fins mechanically bonded to the tubes and galvanized steel end casings. Fin design shall be sine wave rippled.

c. Coils shall be two rows, half serpentine circuitry, and 12 fins per inch.

d. Coils shall be located in the reheat position downstream of the cooling coil.

e. Control valves shall be field supplied and field installed.

J. Filters

1. Unit shall include 4 inch thick, pleated panel filters with an ASHRAE efficiency of


85% and a MERV rating of 13, upstream of the cooling coil. Unit shall also include 2 inch thick, pleated panel pre filters with an ASHRAE efficiency of 30% and MERV rating of 8, upstream of the 4 inch standard filters.

K. Outside Air/Economizer

1. Unit shall include 0-100% economizer consisting of a motor operated outside air damper and return air damper assembly constructed of extruded aluminum, hollow core, airfoil blades with rubber edge and end seals. Damper blades shall be gear driven and designed to meet smoke damper Class-1 leakage specifications in accordance with U.L. 555S at 4 inches w.g. air pressure differential across the damper. Damper assembly shall be controlled by spring return enthalpy activated fully modulating

2. Economizer shall be furnished with return air CO2 override.

L. Energy Recovery

1. Where indicated, units shall contain a factory mounted and tested energy recovery wheels. The energy recovery wheels shall be mounted in a rigid frame containing the wheel drive motor, drive belt, wheel seals and bearings. Frame shall slide out for service and removal from the cabinet.

2. The energy recovery component shall incorporate a rotary wheel in an insulated cassette frame complete with seals, drive motor and drive belt.

3. Wheels shall be wound continuously with one flat and one structured layer in an ideal parallel plate geometry providing laminar flow and minimum pressure drop-to-efficiency ratios. The layers shall be effectively captured in stainless steel wheel frames or aluminum and stainless steel segment frames that provide a rigid and self-supporting matrix.

4. Wheels shall be provided with removable energy transfer matrix. Wheel frame construction shall be a welded hub, spoke and rim assembly of stainless, plated and/or coated steel and shall be self-supporting without matrix segments in place. Segments shall be removable without the use of tools to facilitate maintenance and cleaning. Wheel bearings shall be selected to provide an L-10 life in excess of 400,000 hours. Rim shall be continuous rolled stainless steel and the wheel shall be connected to the shaft by means of taper locks.

5. All diameter and perimeter seals shall be provided as part of the cassette assembly and shall be factory set. Drive belts of stretch urethane shall be provided for wheel rim drive without the need for external tensioners or adjustment.

6. The energy recovery cassette shall be an Underwriters Laboratories Recognized Component for electrical and fire safety. The wheel drive motor shall be an Underwriters Laboratory Recognized Component and shall be mounted in the cassette frame and supplied with a service connector or junction box. Thermal performance shall be certified by the manufacturer in accordance with ASHRAE Standard 84, Method of Testing Air-to-Air Heat Exchangers and AHRI Standard 1060, Rating Air-to-Air Energy Recovery Ventilation Equipment.


Cassettes shall be listed in the AHRI Certified Products.

7. Energy recovery wheel cassette shall carry a 5 year non-prorated warranty, from the date of original equipment shipment from the factory. The first 12 months from the date of equipment startup, or 18 months from the date of original equipment shipment from the factory, whichever is less, shall be covered under the standard AAON limited parts warranty. The remaining period of the warranty shall be covered by Airxchange. The 5 year warranty applies to all parts and components of the cassette, with the exception of the motor, which shall carry an 18 month warranty. Warranty shall cover material and workmanship that prove defective, within the specified warranty period, provided the Airxchange written instructions for installation, operation and maintenance have been followed. Warranty excludes parts associated with routine maintenance, such as belts. Refer to the Airxchange Energy Recovery Cassette Limited Warranty Certificate.

8. Unit shall include 4 inch thick, pleated panel outside air filters with an ASHRAE efficiency of 30% and MERV rating of 8, upstream of the wheels.

9. Hinged service access doors shall allow access to the wheels.

10. Total energy recovery wheels shall be coated with silica gel desiccant permanently bonded by a process without the use of binders or adhesives, which may degrade desiccant performance. The substrate shall be lightweight polymer and shall not degrade nor require additional coatings for application in marine or coastal environments. Coated segments shall be washable with detergent or alkaline coil cleaner and water. Desiccant shall not dissolve nor deliquesce in the presence of water or high humidity.

M. Controls

1. Factory Installed and Factory Provided Controller

a. Unit controller shall be capable of controlling all features and options of the unit. Controller shall be factory installed in the unit controls compartment and factory tested. Controller shall be capable of stand-alone operation with unit configuration, setpoint adjustment, sensor status viewing, unit alarm viewing, and occupancy scheduling available without dependence on a building management system. The Unit controller shall also be totally integrated with the existing Campus EMS system to allow all function as defined by the Contract Documents.

b. Controller shall have an onboard clock and calendar functions that allow for occupancy scheduling.

c. Controller shall include non-volatile memory to retain all programmed values without the use of a battery, in the event of a power failure.

d. Variable Air Volume Controller

1. Unit shall utilize a variable capacity compressor system and a variable speed supply fan system to modulate cooling and airflow as required to


meet space temperature cooling loads and to save operating energy. Cooling capacity and fan speed shall modulate based on supply air temperature.

2. Unit shall modulate heating with constant airflow to meet space temperature heating loads. Modulating heating capacity shall modulate based on supply air temperature.

e. Unit configuration, setpoint adjustment, sensor status viewing, unit alarm viewing, and occupancy scheduling shall be accomplished with connection to interface module with LCD screen and input keypad, interface module with touch screen, or with connection to PC with free configuration software. Controller shall be capable of connection with other factory installed and factory provided unit controllers with individual unit configuration, setpoint adjustment, sensor status viewing, and occupancy scheduling available from a single unit. Connection between unit controllers shall be with a modular cable. Controller shall be capable of communicating and integrating with the existing Johnson/Metasys network. Contractor shall provide and install all necessary material and labor to provide a fully functional and integrated control system.

2.4 INDOOR AIR HANDLING UNITS:

A. General Description

1. The Contractor shall furnish and install indoor air handling units as shown

and scheduled on the plans. The units shall be installed in a neat and workmanlike manner in strict accordance with this specification.

2. The units shall be furnished complete with insulated casing, centrifugal

fans, coils as scheduled, drain pan, filters, motor, drive, belt guard and accessories as required.

3. All units shall be rated and certified as complete units in accordance with

ARI Standard 430-74, and shall bear the ARI seal. Hot water coils shall be ARI certified under ARI Standard 410-74.

4. Adequate space around all sides of the air handling unit shall be provided

for proper servicing and maintenance. 5. Indoor air handling units shall be Model CAH as manufactured by Daikin

or approved Equal.

B. Unit Construction

1. Fabricate unit with heavy gauge channel posts and panels secured with mechanical fasteners. All panels, access doors, and ship sections shall be sealed with permanently applied bulb-type gasket. Shipped loose gasketing is not allowed.


2. Panels and access doors shall be constructed as a 2 to 4 -inch; thermal broke double wall assembly, insulation with an R-value of not less than R-13.

3. The inner liner shall be constructed of G90 galvanized and stainless steel. 4. The outer panel shall be constructed of G60 painted galvanized 18-gauge

steel. 5. The floor plate shall be furnished with .125 inch thick aluminum tread plate

in sections as indicated on project schedule. 6. Unit will be furnished with solid inner liners. 7. Panel deflection shall not exceed L/240 ratio at 125% of design static

pressure, maximum 5 inches of positive or 6 inches of negative static pressure. Deflection shall be measured at the panel midpoint.

8. The casing leakage rate shall not exceed .5 cfm per square foot of cabinet

area at 5 inches of positive static pressure or 6 inches of negative static pressure (.0025 m3/s per square meter of cabinet area at 1.24 kPa static pressure).

9. Module to module field assembly shall be accomplished with an

overlapping, full perimeter internal splice joint that is sealed with bulb type gasketing on both mating modules to minimize on-site labor and meet indoor air quality standards.

10. Access doors shall be flush mounted to cabinetry, with minimum of two six

inch long stainless steel piano-type hinges, latch and full size handle assembly. Access doors shall swing outward for unit sections under negative pressure. Access doors on positive pressure sections, shall have a secondary latch to relieve pressure and prevent injury upon access.

11. A 6-inch formed G60 galvanized steel base rail shall be provided by the

unit manufacturer for structural rigidity and condensate trapping.. The base rail shall be constructed with 12-gauge nominal for unit sizes 003 - 035 and 10-gauge nominal for unit sizes 040 - 090. The following calculation shall determine the required height of the base rail to allow for adequate drainage. Use the largest pressure to determine base rail height. [(Negative)(Positive) static pressure (in)] (2) + 4” = required base rail height. Should the unit base rail not be factory supplied at this height, the contractor is required to supply a concrete housekeeping pad to make up the difference.

12. Construct drain pans from stainless steel with cross break and double

sloping pitch to drain connection. Provide drain pans under cooling coil section. Drain connection centerline shall be a minimum of 3’’ above the base rail to aid in proper condensate trapping. Drain connections that


protrude from the base rail are not acceptable. There must be a full 2’’ thickness of insulation under drain pan.

13. Factory leakage test available for units selected with high pressure, low

leakage construction. The unit manufacturer shall provide a witnessed factory leak test on selected units. The cabinet shall be tested at the unit’s positive and negative maximum design operating static pressure, up to 8" of differential static pressure across the cabinet exterior walls for the entire unit. Cabinet leakage shall not exceed Class 6 leakage per ASHRAE Standard 111. All supply and return opening shall be sealed. Air pressure and flow shall be measured by a third party calibrated and certified apparatus. The testing shall be performed at the factory. Owner’s representative shall select on unit to be tested at the time of order. A written test report shall be prepared by the manufacturer and issued to the owner's representative.

14. Factory panel deflection testing available for units selected with high

pressure, low leakage construction. The unit manufacturer shall provide a factory deflection test on one unit at the unit’s positive and negative maximum design operating static pressure, up to 8" of differential static pressure across the cabinet exterior walls for the entire unit. A deflection limit of L/240 will be demonstrated at this time. “L” is defined as the height of a panel on the side of the unit. Measurement shall be at the mid-point of “L” along the largest panel on one side. Owner’s representative shall select on unit to be tested at the time of order. A written test report shall be prepared by the manufacturer and issued to the owner’s representative.

C. Fan Assemblies

1. Acceptable fan assembly shall be a double width, double inlet, class II, belt-drive type housed airfoil fan dynamically balanced as an assembly, as shown in schedule. Maximum fan RPM shall be below first critical fan speed. Fan assemblies shall be dynamically balanced by the manufacturer on all three planes and at all bearing supports. Copper lubrication lines shall be provided and extend from the bearings and attached with grease fittings to the fan base assembly near access door. If not supplied at the factory, contractor shall mount copper lube lines in the field. Fan and motor shall be mounted internally on a steel base. Provide access to motor, drive, and bearings through hinged access door.

2. Acceptable fan assembly shall be a double width, double inlet, class I,

belt-drive type housed forward curved fan dynamically balanced as an assembly, as shown in schedule. Maximum fan RPM shall be below first critical fan speed. Fan assemblies shall be dynamically balanced by the manufacturer on all three planes and at all bearing supports. Copper lubrication lines shall be provided and extend from the bearings and attached with grease fittings to the fan base assembly near access door. If not supplied at the factory, contractor shall mount copper lube lines in


the field. Fan and motor shall be mounted internally on a steel base. Provide access to motor, drive, and bearings through hinged access door.

3. Fan and motor shall be mounted internally on a steel base. Factory

mount motor on slide base that can be slid out the side of the unit if removal is required. Provide access to motor, drive, and bearings through hinged access door. Fan and motor assembly shall be mounted on 2" deflection spring vibration type isolators inside cabinetry.

D. Bearings, Shafts, and Drives

1. Bearings: Basic load rating computed in accordance with AFBMA - ANSI Standards. The bearings shall be designed for service with an L-50 life of 200,000 hours and shall be a heavy duty pillow block, self-aligning, grease-lubricated ball or spherical roller bearing type.

2. Shafts shall be solid, hot rolled steel, ground and polished, keyed to shaft,

and protectively coated with lubricating oil. Hollow shafts are not acceptable.

3. V-Belt drives shall be cast iron or steel sheaves, dynamically balanced,

bored to fit shafts and keyed. Fixed sheaves, matched belts, and drive rated based on motor horsepower. Minimum of 2 belts shall be provided on all fans with 10 HP motors and above. Standard drive service factor minimum shall be 1.1 S.F. for 1/4 HP – 7.5 HP, 1.3 S.F. for 10 HP and larger, calculated based on fan brake horsepower.

E. Electrical

1. Fan motors shall be manufacturer provided and installed, Open Drip Proof, premium efficiency (meets or exceeds EPACT requirements), 1750 RPM, single speed, 460V / 60HZ / 3P. Complete electrical characteristics for each fan motor shall be as shown in schedule.

2. The air handler(s) shall be ETL listed by Intertek Testing Services, Inc.

Units shall conform to bi-national standard ANSI/UL Standard 1995/CSA Standard C22.2 No. 236.

3. Wiring Termination: Provide terminal lugs to match branch circuit

conductor quantities, sizes, and materials indicated. Enclosed terminal lugs in terminal box sized to NFPA 70.

4. Manufacturer shall provide ASHRAE 90.1 Energy Efficiency equation

details for individual equipment to assist Building Engineer for calculating system compliance.

5. Installing contractor shall provide GFI receptacle within 25 feet of unit to

satisfy National Electrical Code requirements.


6. All electrical connection components shall be field provided and mounted as shown on project schedule.

F. Cooling and Heating Coils

1. Certification: Acceptable water heating and refrigerant coils shall be certified in accordance with AHRI Standard 410 and bear the AHRI label. Coils exceeding the scope of the manufacturer’s certification and/or the range of AHRI’s standard rating conditions will be considered provided the manufacturer is a current member of the AHRI Forced Circulation Air-Cooling and Air-Heating Coils certification programs and that the coils have been rated in accordance with AHRI Standard 410. Manufacturer must be ISO 9002 certified.

2. Water heating coil shall be provided. Provide access to coil(s) for service

and cleaning. Enclose coil headers and return bends fully within unit casing. Unit shall be provided with coil connections that extend a minimum of 5” beyond unit casing for ease of installation. Drain and vent connections shall be provided exterior to unit casing. Coil connections must be factory sealed with grommets on interior and exterior panel liners to minimize air leakage and condensation inside panel assembly. If not factory packaged, Contractor must supply all coil connection grommets and sleeves. Coils shall be removable through side and/or top panels of unit without the need to remove and disassemble the entire section from the unit.

3. Headers shall consist of seamless copper tubing to assure compatibility

with primary surface. Headers to have intruded tube holes to provide maximum brazing surface for tube to header joint, strength, and inherent flexibility. Header diameter should vary with fluid flow requirements.

4. Fins shall have a minimum thickness of 0.0075 inch aluminum plate

construction. Fins shall have full drawn collars to provide a continuous surface cover over the entire tube for maximum heat transfer. Tubes shall be mechanically expanded into the fins to provide a continuous primary to secondary compression bond over the entire finned length for maximum heat transfer rates. Bare copper tubes shall not be visible between fins.

5. Coil tubes shall be 5/8 inch OD seamless copper, 0.020 inch nominal tube

wall thickness, expanded into fins, brazed at joints. 6. Coil connections shall be carbon steel, threaded connection. Connection

size to be determined by manufacturer based upon the most efficient coil circuiting. Vent and drain fittings shall be furnished on the connections, exterior to the air handler. Vent connections provided at the highest point to assure proper venting. Drain connections shall be provided at the lowest point to insure complete drainage and prevent freeze-up.

7. Coil shall be furnished as an uncased galvanized steel track to allow for

thermal movement and slide into a pitched track for fluid drainage.


G. Direct Expansion Refrigerant Cooling Coil

1. Direct expansion refrigerant cooling coil shall be provided. 2. Provide access to coil(s) for service and cleaning. Enclose coil headers

and return bends fully within unit casing. Unit shall be provided with coil connections that extend a minimum of 3” beyond unit casing for ease of installation. Coil connections must be factory sealed with grommets on interior and exterior panel liners to minimize air leakage and condensation inside panel assembly. If not factory packaged, Contractor must supply all coil connection grommets and sleeves. Coils shall be removable through side and/or top panels of unit without the need to remove and disassemble the entire section from the unit.

3. Sweat type copper suction headers shall be provided. 4. Fins shall have a minimum thickness of 0.0075 inch aluminum plate

construction. Fins shall have full drawn collars to provide a continuous surface cover over the entire tube for maximum heat transfer. Tubes shall be mechanically expanded into the fins to provide a continuous primary to secondary compression bond over the entire finned length for maximum heat transfer rates. Bare copper tubes shall not be visible between fins.

5. Coil tubes shall be 5/8 inch OD seamless copper, 0.020 inch nominal tube

wall thickness, expanded into fins on 1 1/2-inch centers, brazed at joints. 6. Sweat type copper suction connections located at the bottom of the

suction headers for gravity oil drainage. Coils shall be uniformly circuited in a counterflow manner for either single circuit, row, face, interlaced, or interlaced face split capacity reduction as shown on unit schedule. Pressure type liquid distributors used. Coils shall be tested with 315 pounds air pressure under warm water, and suitable for 250 psig working pressure.

7. Coil casing shall be a formed channel frame of galvanized steel.

H. Filters

1. Furnish combination filter section with 2-inch pleated MERV 8 flat pre-filter with microbial resistant Intersept coating and 4-inch Varicel II MH cartridge 65% efficient (MERV 11) final filter. Provide side loading and removal of filters.

2. Furnish flat panel filter section with 2-inch pleated MERV 8 filter with

microbial resistant Intersept coating. Provide side loading and removal of filters.

3. Filter media shall be UL 900 listed, Class I or Class II.


4. Filter Magnehelic gauge(s) shall be factory furnished and mounted by others.

I. Additional Sections

1. Energy recovery wheel shall be constructed of corrugated synthetic fibrous media, with a desiccant intimately bound and uniformly and permanently dispersed throughout the matrix structure of the media. Rotors with desiccants coated bonded, or synthesized onto the media are not acceptable due to delaminating or erosion of the desiccant material. Media shall be synthetic to provide corrosion resistance and resistance against attack from laboratory chemicals present in pharmaceutical, hospital, etc. environments as well as attack from external outdoor air conditions. Coated aluminum is not acceptable. Face flatness of the wheel shall be maximized in order to minimize wear on inner seal surfaces and to minimize cross leakage. Rotor shall be constructed of alternating layers of flat and corrugated media. Wheel layers should be uniform in construction forming uniform aperture sizes for airflow. Wheel construction shall be fluted or formed honeycomb geometry so as to eliminate internal wheel bypass. Wheel layers that can be separated or spread apart by airflow are unacceptable due to the possibility of channeling and performance degradation. The minimum acceptable performance shall be as specified in the unit schedule. Desiccant Material: The desiccant material shall be a molecular sieve, and specifically a 4A or smaller molecular sieve to minimize cross contamination. Wheel Media Support System: The wheel frames shall consist of evenly spaced steel spokes, galvanized steel outer band and rigid center hub. The wheel construction should allow for post fabrication wheel alignment. Wheel Seals: The wheel seals shall be full contact nylon brush seals or equivalent. Seals should be easily adjustable. Wheel cassette: Cassettes shall be fabricated of heavy duty reinforced galvanized steel or welded structural box tubing. Cassettes shall have a built in adjustable purge section minimizing cross contamination of supply air as shown on unit schedule. Bearings shall be inboard, zero maintenance, permanently sealed roller bearings, or alternatively, external flanged or pillow block bearings. Drive systems shall consist of fractional horsepower AC drive motors with multi-link drive belts. Face and bypass dampers shall be furnished as shown on unit schedule and drawings. Certification: The wheel shall be AHRI certified by the energy recovery wheel supplier to AHRI Standard 1060 and must bear the AHRI certification stamp. Private independent testing performed "in accordance with" various standards is not a substitute for AHRI certification and shall not be accepted. The wheel shall be listed or recognized by UL or equivalent.

2.5 OUTDOOR AIR COOLED CONDENSING UNITS:

A. GENERAL


1. Unit shall be factory assembled and tested including leak testing of the coil and run testing of the completed unit. Run test report shall be supplied with the unit in the controls compartment’s literature pocket.

2. Unit shall have decals and tags to indicate lifting and rigging, service areas and caution areas for safety and to assist service personnel.

3. Unit components shall be labeled, including pipe stub outs, refrigeration system components and electrical and controls components.

4. Installation, Operation and Maintenance manual shall be supplied within the unit.

5. Laminated color-coded wiring diagram shall match factory installed wiring and shall be affixed to the interior of the control compartment’s access door.

6. Unit nameplate shall be provided in two locations on the unit, affixed to the exterior of the unit and affixed to the interior of the control compartment’s access door.

7. Outdoor air cooled condensing unit shall be Aaon Model CC or approved equal.

B. CONSTRUCTION

1. Unit shall be completely factory assembled, piped, and wired and shipped in one section.

2. Unit shall be specifically designed for outdoor application and have 2 compressors for each circuit – dual circuits required.

3. The condenser coil shall be mechanically protected from physical damage by painted galvanized steel louvers covering the full area of the coil.

4. Access to condenser coils, condenser fans, compressors, and electrical and controls components shall be through hinged access doors with quarter turn, zinc cast, lockable handles.

5. Unit shall include a fork-liftable base.

C. ELECTRICAL

1. Unit shall be provided with standard power block for connecting power to the unit.

2. Control circuit transformer and wiring shall provide 24 VAC control voltage from the line voltage provided to the unit.

3. Unit shall be provided with factory installed and factory wired 115V, 15 amp GFI outlet with outlet disconnect switch in the unit control panel.

4. Unit shall be provided with phase and brown out protection which shuts down all motors in the unit if the electrical phases are more that 10% out of balance on voltage, the voltage is more that 10% under design voltage, or on phase reversal.


5. Units shall be provided with a suction pressure transducer on the lead refrigeration circuit.

D. AIR COOLED CONDENSER

1. Condenser fans shall be vertical discharge, axial flow, direct drive fans.

2. Fan motor shall be weather protected, single phase, direct drive, and open drip proof with inherent overload protection.

3. Coils shall be designed for use with R-410A refrigerant and constructed of copper tubes with aluminum fins mechanically bonded to the tubes and aluminum end casings. Fin design shall be sine wave rippled.

4. Coils shall be designed for a minimum of 10°F of refrigerant sub-cooling.

5. Coils shall be helium leak tested.

E. CONTROLS

1. Unit shall be provided with a terminal block for field installation of controls.

F. COMPRESSORS

1. Compressors shall be controlled and modulate capacity via a variable frequency drive. Unit mounted controller shall control head pressure and refrigeration capacity.

2.6 POOL DEHUMIDIFICATION UNIT WITH ENERGY RECOVERY:

A. GENERAL

1. The dehumidifier shall be single package outdoor unit mounted on the roof. Each unit shall include base rails, compressor(s), evaporator (dehumidifying coil), condenser (air reheat coil), water heater(s), supply air blower(s), blower motor(s), motor starters and controls in one complete enclosure. All controls shall be via fully programmable and fully self-diagnostic microprocessor, and fully integratable with Campus BAS System.

2. Entire unit shall be ETL listed and/or CSA certified. Units with listed components only

shall not be acceptable.

3. The unit shall be double walled construction and designed for outdoor, rooftop installation.

4. The unit shall include an Economizer control sequence for both cooling and dehumidification.

5. The unit shall be configured with the ability for purge mode by outdoor air

introduction and exhaust. Systems incorporating return air exhaust strategies after the evaporator coil are not acceptable or must fully disclose the resulting reduction in the unit’s net sensible cooling capacity.


6. All exhaust fan(s) shall be unit mounted and sized to maintain the facility at negative

pressure as prescribed by ASHRAE.

7. Unit shall be supplied with integral space heating coil sized to meet the skin losses and outdoor air heating loads.

8. Unit shall be supplied with Heat Recovery coils to preheat the outdoor air with energy reclaimed from the exhaust air.

9. Unit shall be supplied with an integral air-cooled condenser, factory piped, wired and charged with R-410A. It shall be mounted on the same curb as the dehumidification unit and shall utilize a single point power connection.

B. PRINCIPLE OF OPERATION

1. The unit shall be designed to maintain optimum comfort levels. The unit shall be able

to simultaneously heat pool water and reject heat to the air or provide air conditioning. The unit shall not allow wide swings in pool water or room air conditions. Units with oversized pool water heaters that cool the space shall not be acceptable.

2. The unit shall operate according to the following sequence. The warm humid air from

the natatorium passes through the dehumidifying coil and is cooled below its dew point, thereby condensing moisture. The heat captured by this process and the heat generated by the compressor power consumption are absorbed by a mechanical refrigeration system. This heat is then distributed as specified herein.

3. Besides humidity control, the first priority is to maintain the pool water temperature by

rejecting compressor heat through a water cooled condenser. An automatic compensation system shall proportionally direct the heat where it is required and permit unit start up regardless of water temperature. During initial startup with low pool water temperature, all available heat shall be directed to the pool water. Once the desired pool water temperature is reached, the water heating system shall adjust its output automatically. Unit shall be equipped with field adjustable water heating capacity accessed externally.

4. Control logic shall allow the system to continue to dehumidify and air condition

normally regardless of water flow rate. If the water flow is not present Low waterflow message shall be displayed on the operator panel. The water temperature difference between the inlet and the outlet shall not exceed 20°F in all operating modes to allow for the use of non-metallic piping on pool water mains. Water temperatures exceeding 120°F shall not be acceptable.

5. All heat shall be transferred to the air and contribute to the pool enclosure heating

requirement unless air conditioning is in operation. The leaving supply air dry bulb temperature is always the same or higher than the entering return air temperature, except when air conditioning is in operation.


C. OUTDOOR CABINET

1. Unit shall have a built-in electrical control panel with separate double-door

compartment (single door shall not be acceptable) 2. Entire cabinet and access doors shall be double walled construction with 2”

insulation and fitted with a minimum of 24-gauge solid metal inner liner. The inner liner shall be constructed of painted hot dipped zinc coated sheet metal. The inner metal liner is to be installed with a continuous thermal break to prevent condensation and full silicone caulk seal at all sections of contact to the enclosure. The metal liner shall be installed to act as a vapor barrier. Units without a metal inner liner as a vapor barrier shall not be acceptable.

3. All access doors shall have welded edges that are ground smooth and be equipped

with flush mounted, adjustable tension cam latch mechanisms and safety door stops and holders. The latches shall be secured to the unit frame and shall prevent entrance to the unit without tools.

4. All access doors shall be sealed against the unit frame with a continuous raised

weatherproof vinyl compression gasket. The compression gasket shall be fastened to the enclosure in a special freezeproof seam. Foam gasketing and glued gasketing shall not be acceptable.

5. Rain guards shall be installed over all access doors. 6. Roof panel has 1-1/2 inch standing seams with two 90° bends to form an inverted

“snap U’ channel. Each 90° bend shall be fully gasketed to eliminate thermal bridging.

7. A 100-watt light, NEMA 4 type, switch operated shall be provided. The light shall be

available for use with and without main power disconnect on. 8. All outdoor hardware shall be stainless steel. Plated or coated hardware shall not be

acceptable. All components not requiring welding shall use ¼-inch stainless steel bolts fastened to permanently enclosure mounted nuts. Loose bolts and sheet metal screws shall not be acceptable.

9. The unit shall be equipped with a rainhood and birdscreen for the outdoor air intake

and exhaust. The rainhood shall not reduce the face area of the damper. The rainhood and birdscreen construction and paint shall be the same as the units casing. The rainhood shall be shipped loose from the unit for field installation.

D. INSULATION

1. Rooftop units shall be insulated with 2-inch thick, fiberglass duct liner insulation,

approved for 250°F operating temperature and up to 5,000-fpm air velocity. Surface to be protected against perforation with a reinforcing mesh. Fire resistance rating to conform to NFPA Standard 90A. Sound attenuation coefficient shall be not less than 1.06 at a frequency of 1000 Hz as per ASTM Standard C423. Thermal conductivity


shall be not more than 0.232 Btu•in./h•sq. ft•F at 75°F. Insulation shall be securely fastened by spot welding to become an integral component of the enclosure and held on by mechanical fasteners. Adhesives shall not be acceptable.

E. EVAPORATOR (DEHUMIDIFIER COIL)

1. Shall be six or eight rows deep for maximum moisture removal capacity with air

velocity not to exceed 500 fpm, with 3/8-inch OD seamless copper riffle tubing mechanically expanded to assure high heat transfer with maximum ten aluminum fins per inch. Coils over 45-inches high shall have an intermediate one piece drain pan constructed of 20-gauge hot dipped zinc coated corrosion resistant sheet metal and painted after fabrication with a USDA-approved converted epoxy resin providing a chlorine and pool chemistry resistant finish.

2. Entire Evaporator coil, fins, and end plates shall be coated with Finguard Blygold®

for maximum corrosion resistance. Untreated fin material shall not be acceptable. Coating shall comply with ASTM B117/D1654 and ASTM D2126 for corrosion resistance. Electrofin Coating will not be accepted.

3. An adjustable damper shall be installed above the evaporator coil for apparatus dew

point control during cold water start-up. Capacity reduction methods shall absolutely not be used for dew point control. Systems with variable outdoor and return air flows shall have automatic air flow correction via motorized bypass dampers. Coils without bypass air shall not be acceptable.

4. Coil shall be factory tested at air pressures not less than 400 psig in a water bath.

F. CONDENSER (AIR REHEAT COIL)

1. Shall be sized to transfer 100% of the compressor heat of rejection into the air if

necessary with 3/8 inch OD seamless copper tubing mechanically expanded to assure high heat transfer with maximum twelve aluminum fins per inch.

2. Entire Condenser coil, fins, and end plates shall be coated with Finguard Blygold®

for maximum corrosion resistance. Untreated fin material shall not be acceptable. Coating shall comply with ASTM B117/D1654 and ASTM D2126 for corrosion resistance. Electrofin Coating will not be accepted.

3. Coil shall have a 16-gauge galvanized casing and end plates. 4. Coil shall be factory tested at air pressures not less than 600 psig in a water bath.

H. DRAIN PAN

1. Each unit shall be equipped with a sloped non-trapping drain pan under the entire

evaporator coil and prevent condensate carryover. Flat drain pans susceptible to water pooling and subsequent bacteria growth shall not be acceptable.


2. The drain pan shall be double walled with insulation and contracted of 16-gauge hot dipped zinc-coated corrosion resistant sheet metal and painted after fabrication with a USDA-approved epoxy resin providing a chlorine and pool chemistry resistant finish.

3. The unit shall be configured with a Bottom drain connection suitable for 1-1/2 inch O.D. P-trap connection (by others). Heat tracing (by others) will be required.

I. SUPPLY FANS

1. Blower

a) Shall be high performance direct drive radial fan with centrifugal backward-curved impeller. The fan unit shall be epoxy coated.

b) The inlet cone shall be made of epoxy coated steel. The inlet cone is optimized

to give the best possible aerodynamic performance and high efficiency. c) The single inlet impeller shall have backward curved blades made of epoxy

coated steel. The impeller is statically and dynamically balanced according to quality level of G2.5 (ATE G=6.3) and in accordance with DIN ISO 1940-1. The impeller is secured to the shaft through a hub.

2. Blower Motor(s)

a) Shall have inverter-rated insulation system and be open drip-proof, Class F insulation, induction type and pre-lubricated ball bearings. Motors shall have a service factor rating of 1.15 or higher and must be marked premium efficiency.

b) The motor(s) shall be totally enclosed fan cooled.

3. Spring Isolated Blower and Motor Assemblies

a) Blower and motor shall be mounted on a common welded structural steel sub-base, which in turn is spring isolated from the unit base. Springs shall have 1” deflection with top and bottom molded neoprene cups and levelling bolt at the top with a locking cap screw. The fan discharge shall be isolated from the cabinet with a six-inch reinforced canvas connector.

b) Entire sub-base shall be clamped down for shipment

J. OUTSIDE AIR FANS 1. Blower(s)

a) Shall be high performance direct drive radial fan with centrifugal backward-curved impeller. The fan unit shall be epoxy coated.

b) The inlet cone shall be made of epoxy coated steel. The inlet cone is optimized

to give the best possible aerodynamic performance and high efficiency.


c) The single inlet impeller shall have backward curved blades made of epoxy coated steel. The impeller is statically and dynamically balanced according to quality level of G2.5 (ATE G=6.3) and in accordance with DIN ISO 1940-1. The impeller is secured to the shaft through a hub.

2. Blower Motor(s)



3. Blower Direct Drive Assembly

a) All impellers are statically and dynamically balanced to a grade of G=2.5 in accordance with DIN ISO 1940-1. The impellers are secured to the shaft through a steel hub.

K. EXHAUST FANS

1. Blower(s)

a) Shall be double width, double inlet, multi-blade forward curved centrifugal type blower wheel, dynamically and statically balanced and tested, mounted on a solid steel coated.

b) Shall have a galvanized steel wheel and galvanized steel casing painted with a

baked epoxy finish. c) Sealed Bearings shall be grease-lubricated, self-aligning for 200,000 hours

average L-50 life. d) The unit mounted exhaust blower shall be supplied with a power open, spring

return back draft shut off damper.

2. Blower Motor(s)



3. Blower Belt Drive Assembly

a) Shall be double V-belt with a safety factor not less than 1.5 based on nominal motor horsepower, dynamically balanced cast iron fixed pitch blower sheave and dynamically balanced cast iron variable pitch motor sheave.


L. VFD DRIVE PACKAGE

1. The variable frequency drive shall be specifically designed for HVAC fan motors. 2. The variable frequency drive(s) Control Panel(s) is located out of air stream.

M. POOL WATER HEATER

1. Shall be sized specifically for the water heating requirements. Systems requiring more water flow must submit the larger pipe, pump and increased annual operating cost requirements. Oversized water heaters that result in cold supply air temperature when in pool water heating code shall not be acceptable. Coil shall be factory tested at air pressures not less than 600 psig in a water bath.

2. Shall be coaxial, for maximum heat transfer from refrigerant to potable water and

have cross contamination prevention feature and shall be approved for refrigerant pressure up to 660 psig. Pool heater(s) shall be corrosion resistant, cupronickel water circuit, self-purging and self-draining counter flow design.

3. Water circuit(s) shall be supplied with PVC pipe stub outs for easy connection. The

internal water circuit of the unit shall be smooth, valveless, and designed for constant water flow.

4. Rooftop water heaters shall be located in the warm air stream as a form of freeze

protection during power failures. Systems with water heaters in a service vestibule shall not be acceptable. Water circuit shall include a water pressure switch. The water pressure switch shall have a visible, calibrated, adjustable range scale with a snap-acting switch in a dust protected enclosure.

N. COMPRESSORS

1. Units shall have hermetic or scroll compressor(s), suction gas cooled, suitable for

refrigerant R-410a, equipped with internal solid state sensor thermal protection, service valves, resilient type external mounting and easily removable external crankcase heater for liquid migration protection.

2. Compressor manufacturer must have a wholesale outlet for replacement parts in

the nearest major city. 3. Shall be located in a compartment out of air stream not to disturb the air flow within

the dehumidifier during servicing. 4. Compressor(s) shall have a 3-year extended warranty underwritten by the

manufacturer. Third party coverage shall not be acceptable.

O. REFRIGERATION CIRCUIT

1. Shall have an in-line solder type liquid line filter drier, liquid and moisture indicator visible from outside the unit without removal of the access panel, and thermostatic expansion valve.


2. Tamper proof, hermetically sealed non-adjustable high and low pressure controls

and refrigeration service valves shall be installed using Schraeder type valves. 3. Refrigeration service valves shall be located outside of the air stream. 4. Suction line shall be fully insulated with not less than ½-inch closed cell insulation. 5. Pressure transducers shall be provided to monitor refrigerant low and high

pressures, eliminating the need for conventional service manifold gauges.

P. CONTROL PANEL

1. Shall be built-in within a separate compartment in order not to disturb the air flow during servicing.

2. All electrical components shall be mounted on a 14-gauge painted sub-panel.

Direct mounting of components to the partition wall not be acceptable. 3. Blower motor(s) and compressor(s) shall be controlled by contactors. 4. Blower motor(s) and compressor(s) shall be thermally protected. 5. Voltage monitor shall be provided to shut down electrical system to prevent

damage in the event of temporary voltage fluctuation, phase loss, or phase-sequence reversal. Voltage monitor shall be auto reset.

6. Unit shall be provided with single point power connection. Dual power connections

shall not be acceptable. 7. Dry contacts shall be provided for alarm and blower interlock. 8. Color coding and wire numbering shall be provided for easy troubleshooting. All

wires shall be in a wire duct. 9. Compressor(s) shall have a time delay start to prevent short cycling. 10. All wiring shall be installed in accordance with UL and/or CSA safety electrical

standards, and shall be in accordance with NFPA 70 – National Electrical Code in the USA and/or CEC – Canadian Electrical Code in Canada. All components used shall be UL Listed or Recognized and/or CSA Certified.

11. Electrical contractor shall be responsible for external power wiring, disconnect

switch and disconnect switch fusing. 12. A separate power block terminal shall be provided for 115V, single phase power

for service and floodlight. A grounded 115 V AC 15 Amp, convenience outlet shall be provided in the compressor compartment.


13. Programmable seven-day time clock with dry contacts for mode status reporting (in the event the BMS system is not providing the occupied signal).

14. Airflow switch and dry contact for dirty filter alarm.

Q. RETURN AIR FILTERS

1. The first set of Return Air Filters shall be asset of two (2) inch Extended Surface,

Pleated Filters with Antimicrobial MERV 8 rating (ASHRAE 52.2), suitable for commercial applications where 30-35% dust spot efficiency is desired or required. It is also suited to high moisture conditions where bacterial growth may be likely to occur on air filters. The antimicrobial treated media used minimizes the chance of bacterial growth. Initial resistance of 0.33 in. W.G. based on 500 FPM air velocity.

R. OUTDOOR AIR CONNECTION

1. Filters shall be two-inch cleanable type air filters suitable for commercial

application. The filtering element shall be made from 100% virgin natural fibers, spun into a high loft, interlocking maze. The fibers shall be bonded to touch scrim backing for rigidity. The frame shall be made of galvanized, formed channel with drain holes punches for ease of cleaning. The frame shall enclose a 16-gauge wire air leaving grid and 10-gauge wire front support grid for maximum filter pad support. Initial resistance at 100% R.A.F. of 0.07-inch W.G., dust holding capacity of 232 grams/ft. 2 and average arrestance efficiency of 67% based on 500 fpm air velocity.

2. Motorized balancing dampers shall be opposed type with overlapping blade and

double seals to minimize leakage. Damper leakage shall be less than 0.4% of maximum flow at 10-inch W.C. differential. Damper blades shall be mounted on steel rods which rotate on nylon bushings. Damper blades shall be extruded aluminum. All damper hardware shall be corrosion resistant

S. AIR-COOLED AIR CONDITIONING

1. Unit shall be equipped with air conditioning feature to reject all compressor heat to

an Integral (End) outdoor air-cooled condenser. The outdoor condenser shall be equipped with transformer and 24VAC control including contactor for fan motor.

2. Unit shall be provided with a dry contact rated for 24VAC/5A to operate the remote

outdoor condenser control. 3. Refrigeration circuit shall include three way refrigerant valve, receiver with pressure

relief valve (valve vented outside cabinet if refrigerant charge over 100 lbs.) set at 400 psig (600 psig for R410A) sized to hold the outdoor condenser charge, pressure control and pressure differential valve(s), and two shutoff valves to isolate the outdoor condenser.


4. Unit shall include an oil separator package if circuit system charge is over 200 lb. or line length is over 75 feet.

5. Hot gas lines shall be fully insulated with not less than 3/8-inch closed cell

insulation. Units without insulated hot gas lines in the air stream shall not be acceptable.

6. Condenser fans shall be direct drive, propeller type designed for low tip speed and

vertical air discharge. Fan blades shall be constructed of aluminum and riveted to dipped steel center hub. Fan diameter shall not exceed 30-inches with 1140 rpm.

7. Condenser fan motors shall be permanently lubricated sealed ball bearings with

built-in overload protection and resilient mounted to heavy-gauge galvanized steel rails. All motors shall be factory wired to the units’ weatherproof main control panel. All fans shall be protected with heavy gauge, welded steel wire fan guards with baked-on powder epoxy coating.

8. Condenser coil shall be designed for variable heat transfer into the air with

seamless deoxidized heavy wall smooth copper tubing mechanically expanded in self-spaced full collared aluminum plate fins for permanent bond to assure high heat transfer with maximum ten corrugated aluminum fins per inch. Coil shall have 16-gauge galvanized casing and end plates with plated hardware. Connections and bends are brazed with high temperature brazing alloy. Coils are factory leak tested at 400 psig in a water bath and purged using -40°F dew point air. Air-cooled condenser coils are provided with sweat-type connections and are sealed and pressurized at 20-psig dry air. Tube sheets are provided with oversized holes, and coils are supported in sliding tracks for friction-free assembly and maximum reliability.

T. HOT WATER HEATING COIL

1. Shall be factory installed and be one or two rows deep for variable heat transfer into the air with minimum ½-inch OD seamless copper tubing mechanically expanded with maximum twelve aluminum fins per inch.

2. Minimum fin thickness of 0.006 in. Minimum tube thickness = 0.016 in. 3. Water circuit to be designed for minimum 3.0 FPS and maximum 8 FPS to assure

maximum heat transfer. 4. Coil shall have a 16-gauge galvanized casing and end plates. 5. Coil shall be factory tested at air pressures not less than 400 psig in a water bath. 6. Shall be Thermoguard coated fins for maximum corrosion resistance. Untreated fin

material shall not be acceptable. Coating shall comply with ASTM B117/D1654 and ASTM D2126 for corrosion resistance.

7. Hot water flow shall be controlled by a unit mounted modulating three-way valve.

Valve actuator shall be direct-coupled type, which require no crank arm and


linkage, and be capable of direct mounting to a jack shaft. The actuator must be designed so that they may be used for either clockwise or counterclockwise fail-safe operation. Actuator shall have a manual positioning mechanism accessible on its cover. Actuator shall use a brushless DC motor and be protected from overload at all angles of rotation. Run time shall be constant and independent of torque. Actuator shall be UL listed and CSA certified, have a 2-year warranty, and be manufactured under ISO 9001 International Quality Control Standards. Actuator shall be controlled by the unit’s control system using PID heating sequence.

U. PURGE CYCLE WITH ECONOMIZER SEQUENCE

1. Minimum exhaust fan (EF#1) shall be double width, double inlet, multi-blade forward curved centrifugal type blower wheel, dynamically and statically balanced and tested, mounted on a solid steel coated shaft. Blower shall have a galvanized steel wheel and galvanized steel casing painted with a baked epoxy finish. Bearings shall be grease-lubricated, self-aligning for 200,000 hours average L-50 life. Its part-time operation shall be controlled by an occupied/unoccupied signal. Full-time exhaust fans shall not be acceptable.

2. Exhaust fan (EF#2) shall be double width, double inlet, multi-blade forward curved

centrifugal type blower wheel, dynamically and statically balanced and tested, mounted on a solid steel coated shaft. Blower shall have a galvanized steel wheel and galvanized steel casing painted with a baked epoxy finish. Bearings shall be grease-lubricated, self-aligning for 200,000 hours average L-50 life. Its part-time operation shall be controlled by a purge exhaust or Economizer signal. Full-time exhaust fans shall not be acceptable. The compressor(s) do(es) not operate during purge mode or Economizer mode.

3. Motors shall have inverter-rated insulation system and be open drip-proof, Class B

insulation, induction type, pre-lubricated ball bearings and mounted on an adjustable base. Motors shall have a service factor rating of 1.15 or higher.

4. Belt drive assembly shall be double V-belt with a safety factor not less than 1.5

based on nominal motor horsepower, dynamically balanced cast iron fixed pitch blower sheave and dynamically balanced cast iron variable pitch motor sheave.

5. Minimum exhaust, Purge exhaust, evaporator face and bypass and outdoor air

dampers shall be opposed type with overlapping blade and double seals to minimize leakage. Damper leakage shall be less than 0.4% of maximum flow at 10-inch W.C. differential. Damper blades shall be mounted on steel rods that rotate on nylon bushings. Damper blades shall be extruded aluminum. Outdoor air dampers shall have at least 1-inch of insulation. All damper hardware shall be corrosion resistant.

6. Minimum exhaust and Purge exhaust air dampers shall have at least 1-inch of

insulation. 7. All 5 actuators (EF#1, EF#2, evaporator face, evaporator bypass, and outdoor air)

shall be on-off spring return type. Damper actuators shall be direct-coupled type, which require no crank arm and linkage and be capable of direct mounting to a


jack shaft. The actuators must be designed so that they may be used for either clockwise or counterclockwise fail-safe operation. Actuators shall have a manual positioning mechanism accessible on its cover. Actuators shall use a brushless DC motor and be protected from overload at all angles of rotation. Run time shall be constant and independent of torque. Actuators shall be UL listed and CSA certified, have a 2-year warranty, and be manufactured under ISO 9001 International Quality Control Standards. Actuators shall be controlled by the unit’s integrated microprocessor control system.

8. Integral return air plenum and return air opening shall be sized for 100% air flow

with proper velocity reduction to allow for even evaporator coil loading and ample service access of exhaust fans through man-size access doors.

9. Outdoor air opening shall be sized for scheduled outdoor air capability.

V. HEAT RECOVERY COILS

1. The air-to-air heat exchanger shall recover and transfer the energy from the exhaust air to the incoming make-up air resulting in 50% energy savings. The heat recovery process is independent of compressor operation and does not have any moving parts. Systems requiring compressor operation shall not be acceptable.

2. Evaporator (Exhaust Air coil)

a. Shall not be less than six rows deep for maximum heat transfer with air velocity not to exceed 500 fpm, with 5/8-inch OD seamless copper tubing mechanically expanded with maximum ten aluminum fins per inch.

b. Coil shall have a 16-gauge galvanized casing and end plates. c. Coil shall be factory tested at air pressures not less than 400 psig in a water

bath. d. Shall have Thermo + FinGuard coated fins. Coating shall comply with ASTM

B117/D1654 and ASTM D2126 for corrosion resistance.

3. Condenser (Outdoor Air Coil)

a. Shall not be less than four rows deep for maximum heat transfer into the air with 5/8-inch OD seamless copper tubing mechanically expanded with maximum ten aluminum fins per inch.

b. Coil shall have a 16-gauge galvanized casing and end plates. c. Coil shall be factory tested at air pressures not less than 400 psig in a water

bath. d. Shall have Thermo + FinGuardHyPoxy® coated fins. Coating shall comply

with ASTM B117/D1654 and ASTM D2126 for corrosion resistance.


4. Refrigeration Circuit

a. Both coils shall operate with R-410A refrigerant using a thermos-siphon system.


W. MANUFACTURERS

1. Unit shall be maintained by Dectron, Inc. with capacities as scheduled, or equal.

2.7 FANS: A. General:

1. Provide fans as indicated. All fans shall have been tested and their performance rated in accordance with Air Movement and Control Association, Inc., Bulletin 210-85 Test Code and shall be licensed to bear the AMCA Seal. All fans shall carry the AMCA Certified Rating Seal for air and sound. Sound power levels shall be submitted for approval.

2. The first critical speed of the fan shaft, wheel, and bearing arrangement shall be at

least 125% of the maximum cataloged fan speed.

3. Selected fans shall be rated for 15% greater static pressure than specified at the design air flow and shall be selected to the right of the apex of the pressure/volume curve. At design speed, fans shall provide stable operation down to 85% of the design volume.

4. Brake horsepower shall not exceed 78% of the motor nameplate horsepower times

the motor service factor for BI fans and 70% for FC fans.

B. In-Line Centrifugal Fan (Belt Drive):

1. Duct-mounted fans shall be of the centrifugal belt driven in-line type. The fan housing shall be constructed of heavy gauge galvanized steel and shall include duct mounting collars.

2. Unit shall have service doors to permit easy access to all interior components.

3. The fan wheel shall be of the aluminum backward inclined, centrifugal type.

4. Wheels shall be dynamically and statically balanced and shall overlap the spun inlet venturi for maximum performance. The motor and drives shall be isolated from the air stream.

5. Motors shall be of the heavy duty type with permanently lubricated, sealed ball bearings.

6. The wheel shaft shall be ground and polished shafting mounted in heavy duty permanently sealed pillow block bearings. Drives shall be sized for a minimum of 165% of driven horsepower.

7. Pulleys shall be of the fully machined cast iron type, keyed and securely attached to the wheel and motor shafts. The motor pulleys shall be adjustable for final system balancing.

8. Flexible wiring leads shall be provided from the fan motor to an external mounted


junction box and disconnect switch permitting access for service without disconnecting the field wiring.

9. All fans shall bear the AMCA Certified Ratings Seal for both air and sound performance.

10. Manufacturers: Greenheck, Penn, ACME, or equal.

2.8 VARIABLE AIR VOLUME TERMINAL UNITS: A. Single Duct, Variable Volume Terminal Units (Pressure-Independent - Digital):

1. Furnish and install TITUS Model DESV single duct, variable air volume terminals of the sizes and capacities shown in the plans.

2. Terminals should be certified under the ARI Standard 880-89 Certification Program

and carry the ARI Seal. Non-certified terminals may be submitted after testing at an independent testing laboratory under conditions selected by the Engineering Consulting in full compliance with ARI Standard 880-89. These tests must be witnessed by the Engineering Consultant with all costs to be borne by the Terminal Manufacturer. Testing does not ensure acceptance.

3. The terminal casing shall be minimum 22 gauge galvanized steel, internally lined

with dual density glass fiber insulation which complies with UL 181 and NFPA 90A. All exposed insulation edges shall be coated with NFPA 90A approved sealant to prevent entrainment of fibers in the airstream. The discharge connection shall be slip-and-drive construction for attachment to metal ductwork. The casing shall be constructed to hold leakage to the maximum values shown in Table A.

4. The damper shall be heavy gauge steel with shaft rotating in Delrin or bronze oilite

self-lubricating bearings. Nylon bearings are not acceptable. Shaft shall be clearly marked on the end to indicate damper position. Stickers or other removable markings are not acceptable. The damper shall incorporate a mechanical stop to prevent overstroking, and a synthetic seal to limit close-off leakage to the maximum values shown in Table B.

5. Actuators shall be capable of supplying at least 35 in./lb. of torque to the damper

shaft, and shall be mounted externally for service access. Terminals with internal actuator mounting or linkage connection must include gasketed access panel, removable without disturbing ductwork. Casing with access panel shall be constructed to hold leakage to the maximum values shown in Table A.

6. At an inlet velocity of 2000 fpm, the differential static pressure required to operate

any terminal size shall not exceed .10" wg for the basic terminal or .15" wg for the terminal with integral attenuator.

7. Sound ratings for the terminal shall not exceed 30 NC at 2" static pressure. Sound

performance shall be ARI certified.


8. The terminals shall be equipped with pressure independent digital controls which can be reset to modulate airflow between zero and the maximum cataloged cfm. Maximum airflow limiters are not acceptable.

9. The terminals shall incorporate multi-point, center-averaging velocity sensors. A

minimum of four measuring ports must be parallel to the take-off point from the sensor. Sensors with measuring ports in series are not acceptable. The sensor must provide a minimum differential pressure signal of .03" w.g. at inlet velocities of 500 fpm. The sensor must provide control signal accuracy of +/-5%, with the same size inlet duct at any inlet condition.

10. Velocity controllers shall have a constant reset span regardless of minimum and

maximum cfm setpoints. Each controller shall be field convertible direct or reverse acting without recalibration. Control devices shall be provided by the Terminal Manufacturer.

11. Flow measuring taps and flow curves shall be supplied with each terminal for field

balancing air flow. Each terminal shall be equipped with labeling showing unit location, size, minimum and maximum cfm setpoints, damper fail position, and thermostat action. Actuators shall be provided by the Terminal Manufacturer.

12. Hot water reheat coils shall be enclosed in a minimum 20 gauge galvanized steel

casing, with slip and drive construction for attachment to metal ductwork. Coils shall be factory installed on the terminal discharge. Fins shall be rippled and corrugated heavy gauge aluminum, mechanically bonded to tubes. Tubes shall be copper with minimum wall thickness of .016", with male solder header connections. Coils shall be leak tested to 300 psi, with minimum burst pressure of 2000 psi at ambient temperature. Number of coil rows and circuits shall be selected to provide performance as required per the plans. Coil performance data shall be based on tests run in accordance with ARI Standard 410.

D. Maximum coil air pressure drop at maximum air flow shall not exceed 0.1" w.g. E. Locate units for unobstructed access to unit panel, controls, and valving. F. The minimum static pressure differential required to operate the terminal units shall not exceed 0.1" w.g. G. Level hot water coils. H. Manufacturers: Titus, Environmental Technology, Trane, Price. PART 3 - EXECUTION NOT USED END OF SECTION

GAI# 13034.A Air Distribution System June, 2015 15700 - 1

DIVISION 15 - MECHANICAL SECTION 15700 - AIR DISTRIBUTION SYSTEM PART 1 - RELATED DOCUMENTS 1.1 SUMMARY: A. All work under this section is subject to the requirements of Section 15100 "General Mechanical Requirements". B. The fabrication and installation of all ductwork, together with related equipment, shall comply with the standards of the National Fire Protection Association, as set forth in NFPA Standard No. 90A, as well as with the applicable requirements of the Sheet Metal and Air Conditioning Contractors' National Association, Inc., and the latest edition of the ASHRAE Guide. C. All duct sizes shown are net inside clear dimensions. Where internal duct lining is used, increase duct sizes accordingly to provide the indicated net free area. Unless otherwise indicated size run-outs, drops, and connections to grilles, registers, diffusers, fans, coils, louvers, filters, and other equipment to the full size of the equipment connection. D. Minor changes may be made in duct sizes where required to fit the available space, provided the indicated net free area and approximate aspect ratio are maintained. E. Smoothly transition all ductwork and prevent excessive or unnecessary turbulence or pressure loss. PART 2 - PRODUCTS 2.1 GENERAL: A. Unless otherwise indicated or specified, fabricate ductwork of galvanized sheet steel. Duct gauges, jointing and reinforcement shall conform to Tables 4, 5, 6 and 7, as applicable, Chapter I of the latest ASHRAE Guide and Data Book. Construction details shall conform to applicable Duct Manuals as published by Sheet Metal and Air Conditioning Contractors' Association, Inc. (SMACNA). B. Erect sheet metal ductwork in a first-class, workmanlike manner secured in place rigidly and permanently. Provide suitable hangers, securely attached to building construction with bolts, clips or inserts. Hangers shall be structural shapes, flat bars, or formed strap hangers; use of wire will not be permitted. Hangers shall not pass through or be inside duct. Support vertical ducts passing through floors by angles riveted to duct and resting either on floor or on brackets secured to building construction. All space around duct where they pass through any walls, floors, ceilings, or roofs shall be sealed tight with incombustible inert material. Do not arrange ducts so as to impair the effectiveness of fireproofing around structural members. Provide sheet metal flanged collars around exposed ducts passing through walls, floors, or ceilings in finished areas to provide finished appearance. Seal all duct joints and seams including low pressure supply and return, and exhaust ductwork with "Hardcast" sealing system as manufactured by Hardcast, Inc., or approved equal.


C. Flexible connections of neoprene or other NFPA approved noninflammable fabric shall be provided in duct system at all rooftop air handling units’ inlet and outlet connections. D. Provide 90-degree elbows of radius construction wherever space permits and elsewhere of

square construction. Construct 90 square elbows with double radius turning vanes. If centerline radius on curved elbows must be less than 1-1/2 duct width, provide full length metal turning vanes. Provide 3/4" trailing edge on turning vanes of 90 degree square elbows wherever elbow is less than one duct perimeter upstream of change in duct size or direction. E. Provide duct collars and angle iron framework for mounting of automatic dampers. F. Branch connections shall utilize 45 degree entry or conical fittings. G. Provide offsets with 30 degree maximum full radius elbows. 2.2 DUCT PRESSURE RATINGS A. Supply duct systems from rooftop air handling units shall be constructed for medium pressure service (4" W.G.). Return air duct systems shall be constructed for low pressure service (-) 2" W.G. 2.3 DUCT CONSTRUCTION: A. Rectangular and/or Round Ductwork (Low Pressure): 1. Make allowance for internal duct lining where required. Sizes shown on the

drawings are inside clear dimensions. 2. Determine duct gauges for the longest duct side and use for all four sides. Joints

and reinforcing requirements apply to the longest duct side.

3. Reinforce all ducts to prevent buckling, vibration, or noise as recommended in the referenced construction standards, and as required to suit the installed conditions.

4. Do not crossbreak duct which will receive rigid insulation covering.

5. Where tap sizes of divided-flow fittings are not indicated, make branch and main connection sizes proportional to their respective air flows and maintain uniform transverse velocities in the fitting.

6. Make radius elbows and radius tee connection with throat radius equal to or greater

than the width of the duct. Use vaned elbows where shown, and where radius elbows will not fit the space, and in all square bends.

7. Turning vanes shall be 36-inch maximum vane length. Where longer vanes are

required, use two or more sets of vanes with intermediate runners securely fastened together.


8. Bolt, screw, rivet, or spot weld reinforcing members securely to the duct on not less than 6-inch centers.

9. Where ducts are open-ended without grilles, registers, or other means of stiffening,

reinforce and stiffen the open end with standing seams or an angle frame.

10. Paint all cut ends on galvanized angles, rods, and other uncoated surfaces with aluminum paint.

11. Where ductwork is not painted or otherwise finished, remove all exposed traces of

joint sealers, Manufacturer's identification and other markings.

12. Aluminum sheet shall be 3003 H14 alloy or duct sheet, 16,000 psi min. tensile strength, and capable of being formed to a Pittsburgh lock seam. Aluminum ductwork shall be provided in all shower and drying rooms and extend to 5’-0” beyond all perimeter walls of shower/drying areas.

13. Reinforcing members for aluminum ductwork may be galvanized steel or aluminum

unless otherwise indicated. Where aluminum reinforcing is used, size the member in accordance with ASHRAE recommendations to have rigidity equivalent to listed mild steel angle sizes.

14. Where aluminum ductwork is used, make allowance for increased thermal

expansion. Particularly avoid direct contact between aluminum and concrete or masonry walls subject to dampness.

15. Determine duct gauges based on duct size and pressure indicated in 2.2A. C. Round and/or Rectangular Ductwork (Medium Pressure):

1. Determine duct gauges based on duct diameter or duct size and pressures indicated in paragraph 2.2A of this section.

2. Round duct shall be spiral seam type.

3. All branch ducts shall connect to the main duct with a 45o conical lateral or low loss fittings as shown on the drawings where possible. If not possible, a 90o conical connection shall be used.

4. All elbows shall be long radius. 5. All seams and joints of fittings shall be welded by gas fusion with rod material same

as duct material.

6. Connections to equipment shall be flexible material, NEMA approved, having adequate reinforcing to be compatible with internal pressure of system.

7. Paint all cut ends and welded joints with aluminum paint.


8. Make allowance for internal duct lining where required. Sizes shown on the

drawings are inside clear dimensions. See 2.12C for lined round ductwork. Rectangular lined ductwork shall have perforated metal liner.

9. Determine duct gauges for the longest duct side and use for all four sides. Joints

and reinforcing requirements apply to the longest duct side.

10. Reinforce all ducts to prevent buckling, vibration, or noise as recommended in the referenced construction standards and as required to suit the installed conditions.

11. Do not crossbreak duct which will receive rigid insulation covering.

12. Where tap sizes of divided-flow fittings are not indicated, make branch and main connection sizes proportional to their respective air flows and maintain uniform transverse velocities in the fitting.

13. Make radius elbows and radius tee connection with throat radius equal to or greater

than the width of the duct. Use vaned elbows where shown and where radius elbows will not fit the space, and in all square bends.

14. Turning vanes shall be 36-inch maximum vane length. Where longer vanes are

required, use two or more sets of vanes with intermediate runners securely fastened together.

15. Bolt, screw, rivet, or spot weld reinforcing members securely to the duct on not less

than 6-inch centers.

16. Where ducts are open-ended without grilles, registers, or other means of stiffening, reinforce and stiffen and open end with standing seams or an angle frame.

17. Remove all exposed traces of joint sealers, Manufacturer's identification and other

markings. 18. Aluminum sheet shall be 3003 H14 alloy or duct sheet, 16,000 psi min. tensile

strength, and capable of being formed to a Pittsburgh lock seam. Aluminum ductwork shall be provided in all shower and drying rooms and extend to 5’-0” beyond all perimeter walls of shower/drying areas.

19. Where aluminum ductwork is used, make allowance for increased thermal

expansion. Particularly avoid direct contact between aluminum and concrete or masonry walls subject to dampness.

D. Round and oval duct shall be spiral conduit and fittings as manufactured by United McGill, Semco, Eastern Sheet Metal, Spira-Matic. 2.4 FABRIC DUCTWORK:


A. Internal Hoop System: Air diffusers shall be constructed with internal retention system.

1. System shall consist of an internal 360 degree hoop system, spaced 5’ on center. 2. System shall be installed with a one row suspension system located 1.5” above top-

dead-center of the textile system. 3. System attachment to cable or U-Track shall be made using Gliders spaced 12

inches. 4. Available for diameters from 8” – 60”.

a. Cable suspension hardware to include cable, eye bolts, thimbles, cable clamps, and turnbuckle(s) as required. 1. Cable suspension options: a. Impregnated steel cable (required for natatorium applications) b. Stainless Steel, Galvanized, Plastic coated, or PVC coated is NOT acceptable. 2. Support lengths shall be 5’

B. TEXTILE

1. Fabric Type

a. Textile Construction: Filament/filament twill polyester that includes 55% recycled content, treated with a machine washable anti-microbial agent by the fabric manufacturer, fire retardant in accordance with UL 2518. Non-linting filament yarn to meet the requirements of ISO Class 3 environment.

b. Air Permeability: 2 (+2/-1) CFM/ft2 per ASTM D737, Frazier c. Weight: 6.8 oz./yd2 per ASTM D3776 d. Warranty: 15 years

2. Textile Color a. As selected by Owner.

C. TEXTILE SYSTEM FABRICATION REQUIREMENTS:

1. Textile system to be constructed in modular lengths (zippered) with proper radial

securing clips (inlets, endcaps, and mid-sections) and top access zippers for vertical cable safety attachment.

2. Integrated air dispersion shall be specified and approved by manufacturer. a. Linear Vents

1. Air dispersion accomplished by linear vent and permeable fabric. Linear vents must be sized in 1 CFM per linear foot increments (based on .5” SP), starting a 1 CFM through 90 CFM per linear foot. Linear vent is to consist of an array of open orifices rather than a mesh style vent to reduce maintenance requirements of mesh style vents. Linear vents should also be designed to minimize dusting on fabric surface.

2. Size of vent openings and location of linear vents to be specified and approved by manufacturer.

3. Inlet connection to metal duct via fabric draw band with anchor patches as supplied by manufacturer. Anchor patches to be secured to metal duct via zip screw fastener – supplied by contractor.


3. Inlet connection to metal duct via fabric draw band with anchor patches as supplied by manufacturer. Anchor patches to be secured to metal duct via zip screw fastener – supplied by contractor.

4. Inlet connection includes zipper for easy removal / maintenance. 5. Lengths to include required intermediate zippers as specified by manufacturer. 6. System MUST include Adjustable Flow Devices to balance turbulence, airflow and

distribution as needed. Flow restriction device shall include ability to adjust the airflow resistance from 0.06 – 0.60 in w.g. static pressure.

7. End cap includes zipper for easy maintenance. 8. Each section of the textile shall include identification labels documenting order

number, section diameter, section length, piece number, code certifications and other pertinent information.

D. DESIGN PARAMETERS:

1. Textile air diffusers shall be designed from 0.25” water gage minimum to 3.1” maximum, with 0.5” as the standard.

2. Textile air diffusers shall be limited to design temperatures between 0 degrees F and 180 degrees F (-17.8 degrees C and 82 degrees C).

3. System overall design; diameter, length, airflow, operating static pressure and dispersion shall be designed or approved by the manufacturer.

4. Do not use textile diffusers in concealed locations. 5. Use textile air dispersion systems only for positive pressure air distribution

components of the mechanical ventilation system. 2.5 AIR VOLUME CONTROLS: A. Furnish and install air volume control devices where indicated and where required to adjust and balance air flow in the systems. B. Manual volume dampers in ductwork shall be factory-assembled units with rigid frame, opposed-blade action, and locking quadrant operator. Mark the extended damper shaft and align the operating handle to indicate the blade position. Dampers shall be as manufactured by Ruskin, American Warming and Ventilating, Inc., Arrow, or approved equal. Rectangular dampers shall be Type MD35, with steel channel frame, 16 gauge steel blades, 9" maximum blade spacing, low pressure, nylon bearings, galvanized finish with aluminum paint touchup. Round manual balancing dampers shall be Type MDRS25 manufactured by Ruskin, Arrow, American Warming and Ventilating, Inc. or as approved equal. D. Furnish and install duct collars and angle iron frames for the installation of ATC dampers. 2.6 AIR TERMINAL DEVICES: A. Furnish and install air supply and return devices of sizes and capacities as scheduled on the Drawings. Catalog numbers shown are to establish standards of quality. Substitutions of equal quality will be considered only if performance characteristics, including throw, drop, pressure loss, sound pressure level, etc., are equal to or better than the performance characteristics of the specified product.


B. Ductwork behind registers, grilles, and diffusers shall be given two coats of flat black paint. Devices shall be white finish. C. Contractor shall determine frame and mounting type required for type of ceiling or finish utilized. D. Where air terminal devices are installed in duct collars or branches, furnish and install air extractors. Furnish and install control grids, volume dampers, and/or other accessories necessary to ensure uniform air flow across the terminal devices. Accessories shall be of the same material as the terminal device. Install fixed blade terminals so that blades block the normal line of vision. Furnish three (3) of each type of removable key operators. E. Manufacturers: Price, Titus, Krueger, Anemostat. F. Device Schedule (Refer to Contract Drawings for Locations, Sizes, and Capacities):

1. Type A - Louvered Face Ceiling Supply Diffusers, Square and Rectangular: Titus Model TDC, adjustable discharge, aluminum construction, equalizing grid, opposed blade damper, removable core, round or square neck, throw direction as indicated on drawings, 24"x24" lay-in module size, white finish.

2. Type B - Louvered Return Register: Titus 350 Series, aluminum, single deflection, 35 degree blades, 1/2" deflection, front blades parallel to long dimension, opposed blade damper, white finish.

3. Type C - Linear Supply Slot Diffuser: Titus Model ML, extruded aluminum, 3 slots, 1" in width each slot, black pattern controllers for adjusting volume and pattern, end boarders, end caps, and mitered corners for closing off ends of diffuser, white finish.

2.7 INSTRUMENT TEST PORTS: A. Furnish and install instrument test ports in the ductwork to allow use of pitot tube length. Equip holes with Ventlok #699 instrument ports. Fittings shall extend beyond duct covering. 2.8 DUCT ACCESS DOORS: A. Furnish and install adequately sized duct access doors, at air measuring devices, and other locations where indicated and required for duct access. Doors shall be the continuous piano hinged type with approved latches and neoprene compression-type gaskets with 1" thick fiberglass double skin and shall be Ruskin Model ADH22, Air Balance, Inc. FSA-100 or as approved equal. Stiffen ductwork at door openings. Where doors are installed in insulated ductwork, provide equivalent insulation in the door assembly. Where access doors are installed in the fire rated partitions, provide "Fire Seal" access doors as manufactured by Air Balance, Inc., or approved equal, UL approved, meeting the rating of the enclosure in which the access door is installed. B. Where duct access doors are installed in medium pressure ductwork, they shall be as manufactured by Ruskin Type ADHP-3, or approved equal, with six latches continuous gasket and insulated core. PART 3 - EXECUTION


3.1 DUCT INSTALLATION: A. Coordinate ductwork with other work and install ducts at proper elevations and locations to maintain indicated ceiling heights and clearances. Provide all elbows, transitions, offsets, connections, and other fittings necessary to fit the work into place or to connect to equipment or diffusers. Method of duct support connection to structure and slabs shall be approved by Structural Engineer, submit shop drawings. B. Substantially support ductwork with structural shapes, flat bars, or formed strap hangers securely attached to the building structure by means of bolts, clamps, or inserts. Support vertical ducts by angles attached to the duct and resting on the floor or supported by brackets or hangers attached to the building structure. Strap hangers shall be 16 gauge minimum galvanized steel formed under the bottom edge of duct. Use square 1/4" thick washer tight against the bend on upper strap attachments to horizontal surfaces. Place all supports external to the ductwork and out of the air stream. Provide additional supports at coils and other concentrated loads. Arrange supports so that duct weight is not transmitted to ceilings, fans or other equipment. C. Prevent direct contact between ductwork and building surfaces or other equipment. Where ducts pass through walls, partitions, floors, ceilings, or roofs, pack and seal the space around the duct with an approved fire-safe inert material. D. Use galvanized or corrosion-resistant hangers, supports, brackets, and hardware. E. Furnish and install NFPA approved duct connections where shown, at all connections to fans, and wherever ducts cross building expansion joints. Use glass-reinforced neoprene fabric, roll-formed to sheet metal strips or flanges. Support adjacent ductwork to provide sufficient slack in the connection. F. See NFPA 90A-13-3-3-8, and latest publication of SMACNA. Prevent direct contact between ductwork and building surfaces or other equipment. The opening in the construction around the duct shall not exceed one inch average clearance on all sides. Where ducts pass through walls partitions, floors, ceilings, or roofs, pack and seal the space around the duct with an approved fire-safe inert material capable of preventing the passage of flame and hot gases sufficiently to ignite cotton waste when subjected to the same NFPA 251 time-temperature conditions required for fire barrier penetration. G. Coordinate duct installation with the requirements of Section 15975, Vibration Isolation. H. In shower rooms and drying areas, where aluminum ductwork is installed, use aluminized hangers, supports, brackets, and hardware. 3.2 DUCTWORK IDENTIFICATION A. All ductwork shall be identified with painted background marked with the name of the service with arrows to indicate flow direction. Color code and system identification shall comply with OSHA and ANSI Standards A13.1-1981. Scheme for the identification of ductwork systems and ASHRAE Fundamentals Handbook.


B. Markings shall use letters of standard style (Sans Serif Gothic Bold), stenciled on ductwork, and shall be located near each branch connection, near each valve or near flanges, where ducts pass through walls or floors, adjacent to changes in direction, and at least every 30 feet on straight runs of ductwork. Where ductwork is adjacent to each other, markings shall be neatly lined up. All markings shall be located in such manner as to be easily legible from the floor.

Outside Diameter of Pipe or Covering (Inches)

Length of Color Field (Inches)

Size of Letters (Inches)

3/4 to 1-1/4 8 1/2

1-1/2 to 2 8 3/4

2-1/2 to 6 12 1-1/4

8 to 10 24 2-1/2

Over 10 & Ductwork 32 3-1/2

3.3 LEAKAGE TESTS: A. All low pressure sheet metal ductwork shall undergo leakage tests at 2 inches water gauge. Supply ductwork after the discharge on terminal units does not require leakage test. Tests shall be accomplished under this section and witnessed as specified under Section 15500. B. All medium pressure sheet metal ductwork shall undergo leakage tests at 4 inches water gauge. Tests shall be accomplished under this section and witnessed as specified under Section 15500. C. Leakage from each duct system shall not exceed 2% for low pressure and 1% for medium pressure of the normal air handling capacity of the system. If the system ductwork is tested in sections the leakage shall not exceed 1/2 of 1% of the CFM to be handled by that section, and the total leakage of the system shall not exceed 1% of the total system CFM. Test pressure shall not exceed the pressure limits of the duct construction as defined in SMACNA "High Pressure Duct Construction Standards". Repair all leaks which are audible, regardless of the leakage rate of the duct system as a whole, by remaking the entire defective joint or seam. Spot sealing of ducts in place will be unacceptable. D. Submit a complete report of ductwork leakage test to the Engineer and Owner.

END OF SECTION

GAI#13034.A AUTOMATIC TEMPERATURE CONTROL June, 2015 15850 - 1

DIVISION 15 - MECHANICAL SECTION 15850 - AUTOMATIC TEMPERATURE CONTROL PART 1 - RELATED DOCUMENTS 1.1 SUMMARY: A. All work done under this section is subject to the requirements of Section 15100, "General Mechanical Requirements". B. The Building Automation System (BAS) contractor shall furnish and install a fully integrated building automation system, incorporating direct digital control (DDC) for energy management, equipment monitoring and control, and subsystems compatible with the campus standard Johnson Metasys Controls System. The system shall not be limited to only use proprietary communication protocols, but also be able to integrate a wide variety of third-party devices, open protocol devices, and applications via existing vendor protocols and through the latest software standards. The intent is to allow information about the system provided in this contract to be sent to another workstation on Campus. C. The installation of the control system shall be performed under the direct supervision of the controls manufacturer with the shop drawings, flow diagrams, bill of materials, component designation or identification number and sequence of operation all bearing the name of the manufacturer. The installing manufacturer shall certify in writing, that the shop drawings have been prepared by the equipment manufacturer and that the equipment manufacturer has supervised their installation. In addition, the equipment manufacturer shall certify, in writing, that the shop drawings were prepared by their company and that all temperature control equipment was installed under their direct supervision. D. All materials and equipment used shall be standard components, regularly manufactured for this and/or other systems and not custom designed specially for this project. All systems and components shall have been thoroughly tested and proven in actual use for at least two years. E. BAS manufacturer shall be responsible for all BAS and Temperature Control wiring for a complete and operable system. All wiring shall be done in accordance with all local and national codes. F. Reference is hereby made for this Contractor to become familiar with Division 16 of these specifications. Familiarization is for coordination purposes only. The Control Contractor shall provide all necessary relays, contacts, interlock wiring, etc., not provided under Division 16 for the automation of the ATC and BAS Systems as required by the sequence of operation and BAS input/output schedule. The Control Contractor shall coordinate all requirements with the building Fire Alarm System. The Control Contractor shall provide all additional devices and interlock wiring required for the automation of the ATC System and monitoring of the BAS System. I. The control system shall include all necessary and specified control equipment properly installed in accordance with the specifications and drawings and shall include, but not be limited to the following:


1. Rooftop Air Handling Units 2. Split System Air Handling Units 3. Variable Air Volume Terminals 4. Fans 5. Pumps

1.2 WORK BY OTHERS: A. Mechanical contractor shall install all wells, valves, taps, dampers, flow stations, etc. furnished by BAS manufacturer. It shall be the BAS Manufacturer’s responsibility to ensure that the Mechanical Contractor is aware of these items and make provisions to install any items not included by the Mechanical Contractor. B. Electrical Contractor provides:

1. 120V power to all BAS an/or Temperature control panels 2. Wiring of all power feeds through all disconnect starters to electrical motor. 3. Wiring of any remote start/stop switches and manual or automatic motor speed

control devices not furnished by BAS manufacturer. 4. Wiring of any electrical sub-metering devices furnished by BAS manufacturer.

C. Products furnished but not installed under this section 1. Section 15200 - Hydronic Piping: a. Control Valves b. Flow Switches c. Temperature Sensor Wells and Sockets d. Flow Meters 2. Section 15200 - Refrigerant Piping: a. Pressure and Temperature Sensor Wells and Sockets D. Products installed but not furnished under this section 1. Section 15700 - Refrigeration Equipment: a. Pressure Transmitters b. Temperature Transmitters c. Power Transmitters d . Refrigerant Leak Detectors 2. Section 15600 - Air Handling Equipment: a. Thermostats b. Sensors c. Controllers 3. Section 16754 - Fire Alarm Systems a. Duct Smoke Detectors 1.3 RELATED WORK


A. Division 1 - General and Special Conditions B. Division 15 - Mechanical C. Division 16 - Electrical 1.4 QUALITY ASSURANCE A. The BAS system shall be designed and installed, commissioned and serviced by manufacturer employed, factory trained personnel. Manufacturer shall have an in-place support facility within 100 miles of the site with technical staff, spare parts inventory and necessary test and diagnostic equipment. Distributors or licensed installing contractors are not acceptable. The manufacturer shall provide full time, on site, experienced project manager for this work, responsible for direct supervision of the design, installation, start up and commissioning of the BMS. The Bidder shall be regularly engaged in the manufacturing, installation and maintenance of BMS systems and shall have a minimum of ten (10) years of demonstrated technical expertise and experience in the manufacture, installation and maintenance of BMS systems similar in size and complexity to this project. A maintained service organization consisting of at least ten (10) competent servicemen for a period of not less than ten years and provide a list of 10 projects, similar in size and scope to this project, completed within the last five years. B. Materials and equipment shall be the catalogued products of manufacturers regularly engaged in production and installation of automatic temperature control systems and shall be manufacturer's latest standard design that complies with the specification requirements. C. All BAS peer-to-peer network controllers, central system controllers and local user displays shall be UL Listed under Standard UL 916, category PAZX; Standard ULC C100, category UUKL7; and under Standard UL 864, categories UUKL, UDTZ, and QVAX and be so listed at the time of bid. All floor level controllers shall comply, at a minimum, with UL Standard UL 91 6category PAZX; Standard UL 864, Categories UDTZ, and QVAX and be so listed at the time of Bid. D All electronic equipment shall conform to the requirements of FCC Regulation, Part 15, Governing Radio Frequency Electromagnetic Interference and be so labeled. E. The manufacturer of the Building Automation System shall provide documentation supporting compliance with ISO-9002 (Model for Quality Assurance in Production, Installation, and Servicing) and ISO-140001 (The application of well-accepted business management principles to the environment). The intent of this specification requirement is to ensure that the products from the manufacturer are delivered through a Quality System and Framework that will assure consistency in the products delivered for this project. F. This system shall have a documented history of compatibility by design for a minimum of 15 years. Future compatibility shall be supported for no less than 10 years. Compatibility shall be defined as the ability to upgrade existing field panels to current level of technology, and extend new field panels on a previously installed network.


G. Compatibility shall be defined as the ability for any existing field panel microprocessor to be connected and directly communicate with new field panels without bridges, routers or protocol converters. H. The Controls Contractor shall coordinate with Division 15 and 16 Contractors to ensure that all required items for a complete system are provided. 1. 5 SUBMITTALS A. Submit 10 complete sets of documentation in the following phased delivery schedule: 1. Valve and damper schedules 2. Equipment data cut sheets 3. System schematics, including: Sequence of operations Point names Point addresses Interface wiring diagrams Panel layouts. System riser diagrams 4. Auto-CAD compatible as-built drawings B. Upon project completion, submit operation and maintenance manuals, consisting of the following: 1. Index sheet, listing contents in alphabetical order

2. Manufacturer's equipment parts list of all functional components of the system, Auto-CAD disk of system schematics, including wiring diagrams

3. Description of sequence of operations 4. As-Built interconnection wiring diagrams 5. Operator's Manual 6. Trunk cable schematic showing remote electronic panel locations, and all trunk data

7. List of connected data points, including panels to which they are connected and input device (ionization detector, sensors, etc.)

8. Conduit routing diagrams 9. Software. 1.6 WARRANTY A. Provide all services, materials and equipment necessary for the successful operation of the entire BAS system for a period of two years after beneficial use. B. Maintain all panels, firmware and software at the latest manufacturer’s revision for a period of two three years. C. The adjustment, required testing, preventative maintenance and repair of the system includes all computer equipment, transmission equipment and all sensors and control devices.


D. The on-line support services shall allow the local BAS subcontractor to dial out over telephone lines to monitor and control the facility's Building Automation System. This remote connection to the facility shall be within 2 hours of the time that the problem is reported. This coverage shall be extended to include normal business hours, after business hours, weekends and holidays. E. If the problem cannot be resolved on-line by the local office, the national office of the building automation system manufacturer shall have the same capabilities for remote connection to the facility. If the problem cannot be resolved with on-line support services, the BAS manufacturer shall dispatch the appropriate personnel to the job site to resolve the problem within 4 hours of the time that the problem is reported. PART 2 - PRODUCTS 2.1 ACCEPTABLE MANUFACTURERS A. Johnson/Metasys. B. No substitutions. 2.2 NETWORKING COMMUNICATIONS A. The design of the BAS shall network operator workstations and stand-alone DDC Controllers. The network architecture shall consist of multiple levels for communication efficiency, a campus-wide (Management Level Network) Ethernet network based on TCP/IP protocol, high performance peer-to-peer building level network(s) and DDC Controller floor level local area networks with access being totally transparent to the user when accessing data or developing control programs. B. The design of BAS shall allow the co-existence of new DDC Controllers with existing DDC Controllers in the same network without the use of gateways or protocol converters.

1. New system shall be fully integrated for communication and control by the JCI MetaSYS installed on campus. Integration shall be accomplished by connecting new Standalone DDC control panels to the existing control panels.

2. From the central workstation in the Central Plant, building engineers, mechanics and

operators shall be able to access any point at any DDC controller in the building. Also, any building engineer shall be able to plug into any main DDC panel on campus and be able to access any point on the system from that point. From the PC workstation located in the Central Plant, the building engineers and operators shall be capable of receiving all alarms and full point. All point naming, point editing, password management, database management, software programming, software editing, software modifying, alarming, trending and reporting must be able to be accomplished from any DDC panel on the network. All graphics creation, graphics editing, graphics modifications and graphics management must be able to be accomplished from any PC workstation on the system.


3. Systems that do not comply completely with the above items are not acceptable. Windowing, or hot keying between PCs is unacceptable.

4. System shall have the capability to be an OPC Client and Server for dynamic

communication with OPC Clients or Servers over an Ethernet network. At a minimum, the following must be supported:

Data Access 1.0 (96), 1.0A (97) and 2.0 (11/98) Alarms & Events 1.0 (1/99) C. Peer-to-Peer Building Level Network:

1. All operator devices either network resident or connected via dial-up modems shall have the ability to access all point status and application report data or execute control functions for any and all other devices via the peer-to-peer network. No hardware or software limits shall be imposed on the number of devices with global access to the network data at any time.

2. The peer-to-peer network shall support a minimum of 100 DDC controllers and PC

workstations 3. Each PC workstation shall support a minimum of 4 peer to peer networks hardwired

or dial up. 4. The system shall support integration of third party systems (fire alarm, security,

lighting, PCL, chiller, boiler) via panel mounted open protocol processor. This processor shall exchange data between the two systems for interprocess control. All exchange points shall have full system functionality as specified herein for hardwired points.

5. Telecommunication Capability:

a. Auto-dial/auto-answer communications shall be provided to allow DDC

Controllers to communicate with remote operator stations and/or remote terminals via telephone lines, as indicated in the sequence of operations.

b. Auto-dial DDC Controllers shall automatically place calls to workstations to

report alarms or other significant events. The auto-dial program shall include provisions for handling busy signals, "no answers" and incomplete data transfers.

c. Operators at dial-up workstations shall be able to perform all control

functions, all report functions and all database generation and modification functions as described for workstations connected via the network. Routines to automatically answer calls from remote DDC or HVAC Mechanical Equipment Controllers shall be inherent in the Controller. The use of additional firmware or software is not acceptable. The fact that communications are taking place with remote DDC or HVAC & Mechanical Equipment Controllers over telephone lines shall be completely transparent to an operator.


d. Multiple modems shall be supported by DDC or HVAC & Mechanical

Equipment Controllers on the Peer-to-Peer Network to ensure continuous communication to workstation.

7. Web Based Operator Interface

a. The BAS shall provide a web based graphical interface that allows users to access the BAS data via the Internet, extranet, or Intranet. The interface shall use HTML based ASP pages to send and receive data from the BAS to a web browser.

b. A web server computer will be supplied. The web server shall use

Microsoft’s IIS server 4.0 with Windows NT4, or IIS 5.0 with Windows 2000, and support browser access via Microsoft Internet Explorer 5.0 (or higher), or Navigator Netscape 6.0 (or higher).

c. All information exchanged over Internet shall be optionally encrypted and

secure via SSL (provided by Owner). d. Access to the web interface may be password protected. A user’ rights and

privileges to points and graphics will be the same as those assigned at the BAS workstation. An option will exist to only allow users “read” access via the web browser, while maintaining “command” privileges via the BAS workstation.

e. Commissioning of the Web interface shall not require modification or

creation of HTML or ASP pages. All graphics available at the BAS graphical workstation shall be available to users via a web browser.

f. The web-based interface shall provide the following functionality to users,

based on their access and privilege rights:

1) Logon Screen – allows the user to enter their user name, password and Domain name for logging into the web server.

2) Alarm Display – a display of current BAS alarms to which the user

has access will be displayed. Users will be able to acknowledge and erase active alarms, and link to additional alarm information including alarm messages, and informational and memo text. Any alarm acknowledgements initiated through the web interface will be written to the BAS central workstation activity log.

3) Graphic Display – Display of system graphics available in the BAS

workstation will be available for viewing over the web browser. Software that requires creation of “web” graphics in order to display them via the browser interface will not be acceptable. A graphic selector list will allow users to select any graphics to which they have access. Graphic displays will automatically refresh with the latest


change of values. Users will have the ability to command and override points from the graphic display as determined by their user accounts rights.

4) Point details – users will have access to point detail information

including operational status, operational priority, physical address, and alarm limits, for point objects to which they have access rights.

5) Point Commanding – users will be able to override and command

points they have access to via the web browser interface. Any commands or overrides initiated via the web browser interface will be written to the BAS central workstation activity log.

g. The web server licensing options will allow concurrent access by (5), (10),

(25), (50), (100) browser connections. h. Internet connections, ISP services, as well as necessary firewalls or proxy

servers shall be provided by the Owner as required to support the web access feature.

D. Management Level Network

1. All Ethernet-capable PCs shall simultaneously direct connect to the Ethernet Management Level Network without the use of an interposing device.

2. Operator Workstation shall be capable of simultaneous direct connection and

communication with BACnet, OPC, and Apogee MLN networks without the use of interposing devices.

3. The Management Level Network shall not impose a maximum constraint on the

number of operator workstations. 4. When appropriate, any controller residing on the peer-to-peer building level

networks shall connect to Ethernet network without the use of a PC or a gateway with a hard drive.

5. Any PC on the Ethernet Management Level Network shall have transparent

communication with controllers on the building level networks connected via Ethernet, as well as, directly connected building level networks. Any PC shall be able to interrogate any controller on the building level network.

6. Any break in Ethernet communication from the PC to the controllers on the building

level networks shall result in an alarm notification at the PC. 7. The standard client and server workstations on the Management Level Network

shall reside on industry standard Ethernet utilizing standard TCP/IP, IEEE 802.3


8. Any break in Ethernet communication between the standard client and server workstations on the Management Level Network shall result in a notification within the Windows taskbar at each workstation.

9. Access to the system database shall be available from any standard client

workstation on the Management Level Network. 10. Client access to client-server workstation configurations over low-bandwidth network

technologies shall be available optionally via Windows Terminal Services or Web browser interface. Remote client access via Windows Terminal Services shall provide multiple, independent sessions of the workstations software – Terminal Services clients shall have workstation software access, without the need to install the workstation software on the local hard drive.

2.3 DDC & HVAC EQUIPMENT CONTROLLERS A. The air handler and rooftop unit controllers are provided with the equipment, by the equipment manufacturer. B. Provide full interface to air handling equipment controllers, reporting all available points and alarms back to the central workstation. C. Coordinate with the equipment manufacturer for available points, interface protocols, and provide any additional required hardware, software, or programming necessary for full integration. 2.4 DDC BUILDING CONTROLLER A. Air handling equipment shall report back to a building controller. DDC Controllers shall be a 16-bit stand-alone, multi-tasking, multi-user, real-time digital control processors consisting of modular hardware with plug-in enclosed processors, communication controllers, power supplies and input/output point modules. Controller size shall be sufficient to fully meet the requirements of this specification and the attached point I/O schedule. Each controller shall support a minimum of three (3) Floor Level Application Specific Controller Device Networks. B. Each DDC Controller shall have sufficient memory to support its own operating system and databases, including: Control processes, Energy management applications, Alarm management applications including custom alarm messages for each level alarm for each point in the system, Historical/trend data for points specified, Maintenance support applications, Custom processes, Operator I/O, Dial-up communications, and Manual override monitoring C. Each DDC Controller shall support firmware upgrades without the need to replace hardware. D. Provide all processors, power supplies and communication controllers so that the implementation of a point only requires the addition of the appropriate point input/output termination module and wiring. E. DDC Controllers shall provide a minimum two RS-232C serial data communication ports for operation of operator I/O devices such as industry standard printers, operator terminals, modems


and portable laptop operator's terminals. DDC Controllers shall allow temporary use of portable devices without interrupting the normal operation of permanently connected modems, printers or terminals. F. As indicated in the point I/O schedule, the operator shall have the ability to manually override automatic or centrally executed commands at the DDC Controller via local, point discrete, on-board hand/off/auto operator override switches for digital control type points and gradual switches for analog control type points.

1. Switches shall be mounted either within the DDC Controllers key-accessed enclosure, or externally mounted with each switch keyed to prevent unauthorized overrides.

2. DDC Controllers shall monitor the status of all overrides and inform the operator that

automatic control has been inhibited. DDC Controllers shall also collect override activity information for reports.

G. DDC Controllers shall provide local LED status indication for each digital input and output for constant, up-to-date verification of all point conditions without the need for an operator I/O device. Graduated intensity LEDs or analog indication of value shall also be provided for each analog output. Status indication shall be visible without opening the panel door. H. Each DDC Controller shall continuously perform self-diagnostics, communication diagnosis and diagnosis of all panel components. The DDC Controller shall provide both local and remote annunciation of any detected component failures, low battery conditions or repeated failure to establish communication. Isolation shall be provided at all peer-to-peer network terminations, as well as all field point terminations to suppress induced voltage transients consistent with: RF-Conducted Immunity (RFCI) per ENV 50141 (IEC 1000-4-6) at 3 V Electro Static Discharge (ESD) Immunity per EN 61000-4-2 (IEC 1000-4-2) at 8 kV air

discharge, 4kV contact Electrical Fast Transient (EFT) per EN 61000-4-4 (IEC 1000-4-4) at 500 V signal, 1 kV

power Output Circuit Transients per UL 864 (2,400V, 10A, 1.2 Joule max) Isolation shall be provided at all peer-to-peer panel's AC input terminals to suppress

induced voltage transients consistent with: IEEE Standard 587-1980 UL 864 Supply Line Transients Voltage Sags, Surge, and Dropout per EN 61000-4-11 (EN 1000-4-11) J. In the event of the loss of normal power, there shall be an orderly shutdown of all DDC Controllers to prevent the loss of database or operating system software. Non-volatile memory shall be incorporated for all critical controller configuration data and battery backup shall be provided to support the real-time clock and all volatile memory for a minimum of 60 days.

1. Upon restoration of normal power, the DDC Controller shall automatically resume full operation without manual intervention.


2. Should DDC Controller memory be lost for any reason, the user shall have the

capability of reloading the DDC Controller via the local RS-232C port, via telephone line dial-in or from a network workstation PC.

2.9 PORTABLE OPERATOR'S TERMINAL (POT) A. Provide industry standard, commercially available portable operator terminals with a LCD display and a full-featured keyboard. The POT shall be handheld and plug directly into all DDC Controllers, HVAC & Mechanical Equipment Controllers, and Floor Level Network Controllers as described below. Provide a user-friendly, English language-prompted interface for quick access to system information, not codes requiring look-up charts. B. Functionality of the portable operator's terminal connected at any DDC Controller: Access all DDC Controllers and ASCs on the network, Backup and/or restore DDC Controller data bases for all system panels, not just the DDC Controller connected to, Display all point, selected point and alarm point summaries, Display trending and totalization information, Add, modify and/or delete any existing or new system point, Command, change setpoint, enable/disable any system point, Program and load custom control sequences as well as standard energy management programs, Acknowledge alarms. C. Functionality of the portable operator's terminal connected to any application specific controller: Provide connection capability at either the Floor Level Network Controller or a related room sensor to access controller information, provide status, setup and control reports, Modify, select and store controller database, command, change setpoint, enable/disable any controller point. D. Connection of a POT to a DDC or HVAC & Mechanical Equipment Controller, or ASC Controller shall not interrupt nor interfere with normal network operation in any way, prevent alarms from being transmitted, or preclude centrally-initiated commands and system modification. E. Portable operator terminal access to controller shall be password-controlled. Password protection shall be configurable for each operator based on function, points (designating areas of the facility), and edit/view capability. 2.10 LOCAL USER DISPLAY A. provide in the new electrical room, a display and keypad for local interface for each air handler controller. A keypad shall be provided for interrogating and commanding points in the controller. The display shall use the same security password and access rights for points in the display as is used in the associated controller. The LCD display shall be a minimum of a 2 line 40 character display. The LCD display shall include the full point name, value (numeric, digital or state text), point priority and alarm status on one screen. The LCD shall dynamically update the value, priority, and alarm status for the point being displayed. The display shall be mounted either on the door of the enclosure or remote from the controller. 2.11 WORKSTATION OPERATOR INTERFACE


A. Basic Interface Description: Update the existing campus and head end software, as a minimum, to include the following functionality for the new systems: 1. Real-time graphical viewing and control of the BAS environment 2. Reporting 3. Scheduling and override of building operations 4. Collection and analysis of historical data 5. Point database editing, storage and downloading of controller databases. 6. Alarm reporting, routing, messaging, and acknowledgment

7. “Collapsible tree,” dynamic system architecture diagram application: Showing the real-time status and definition details of all workstations and devices on a management level network, Showing the real-time status and definition details of all DDC and HVAC Mechanical Controllers at the building level, Showing the status and definition details of all field-level application controllers

8. Definition and construction of dynamic color graphic displays. 9. Online, context-sensitive help, including an index, glossary of terms, and the

capability to search help via keyword or phrase. 10. On-screen access to User Documentation, via online help or PDF-format electronic

file. 11. Automatic database backup at the workstation for database changes initiated at

DDC Controller operator interface terminals. 12. Display dynamic trend data graphical plot. Must be able to run multiple plots

simultaneously: Each plot must be capable of supporting 10 pts/plot minimum, Must be able to command points directly off dynamic trend plot application, must be able to plot both real-time and historical trend data

13. Program editing 14. Transfer trend data to 3rd party spreadsheet software 15. Scheduling reports 16. Operator Activity Log B. Provide a graphical user interface that shall minimize the use of keyboard through the use of a mouse or similar pointing device, with a "point and click" approach to menu selection and a “drag and drop” approach to inter-application navigation. Selection of applications within the workstation software shall be via a graphical toolbar menu – the application toolbar menu shall have the option to be located in a docked position on any of the four sides of the visible desktop space on the workstation display monitor, and the option to automatically hide itself from the visible monitor workspace when not being actively manipulated by the user. C. Update the graphical user interface, menus, and software to include new equipment and sub components including: 1. Dynamic color graphics application 2. Alarm management application 3. Scheduling application 4. Dynamic trend graph data plotter application 5. Dynamic system architecture diagram application 6. Control Program and Point database editing applications 7. Reporting applications


F. Scheduling and override: Provide a calendar type format for simplification of time and date scheduling and overrides of building operations. Schedule definitions reside in the PC workstation, DDC Controller, and HVAC Mechanical Equipment Controller to ensure time equipment scheduling when PC is off-line -- PC is not required to execute time scheduling. Provide override access through menu selection, graphical mouse action or function key. Provide the following capabilities as a minimum: 1. Weekly schedules 2. Zone schedules

3. Event schedules – an event consists of logical combinations of equipment and/or zones

4. Report schedules 5. Ability to schedule for a minimum of up to 365 days in advance 6. Additionally, the scheduling application shall: a. Provide filtering capabilities of schedules, based on name, time, frequency,

and schedule type (event, zone, report) b. Provide sorting capabilities of schedules, based on name, time and type of

schedule (zone, event, report) c. Provide searching capabilities of schedules based on name – with

wildcarding options H. Collection and Analysis of Historical Data: Provide trending capabilities that allow the user to easily monitor and preserve records of system activity over an extended period of time. Any system point may be trended automatically at time-based intervals (up to four time-based definitions per point) or change of value, both of which shall be user-definable. Trend data shall be collected stored on hard disk for future diagnostics and reporting. Automatic Trend collection may be scheduled at regular intervals through the same scheduling interface as used for scheduling of zones, events, and reports. Additionally, trend data may be archived to network drives or removable disk media for future retrieval. Trend data reports shall be provided to allow the user to view all trended point data. Reports may be customized to include individual points or predefined groups of selected points. Provide additional functionality to allow predefined groups of up to 250 trended points to be easily transferred on-line to Microsoft Excel. The DDC Contractor shall provide custom designed spreadsheet reports for use by the owner to track energy usage and cost, equipment run times, equipment efficiency, and/or building environmental conditions. DDC contractor shall provide setup of custom reports including creation of data format templates for monthly or weekly reports. Provide additional functionality that allows the user to view real-time trend data on trend graphical plot displays. A minimum of ten points may be plotted, of either real-time or historical data. The dynamic graphs shall continuously update point values. At any time the user may redefine sampling times or range scales for any point. In addition, the user may pause the graph and take "snapshots" of plot screens to be stored on the workstation disk for future recall and analysis. Exact point values may be viewed and the graphs may be printed. A minimum of 8 true graphs shall run simultaneously. Operator shall be able to command points directly on the trend plot by double clicking on the point. Operator shall be able to zoom in on a specific time range within a plot. The dynamic trend plotting application shall support the following types of graphs, with option to graph in 3D: line graph, area graph, curve graph, area-curve graph, step graph, and scatter graph. Each graph may be customized by the user, for graph type, graph text, titles, line styles and weight, colors, and configurable x- and y-axes.


I. Dynamic Color Graphic Displays: Create color graphic floor plan displays and system schematics for each air handling unit and sub component, , shall be provided by the BAS contractor as indicated in the point I/O schedule of this specification to optimize system performance, analysis and speed alarm recognition. The operator interface shall allow users to access the various system schematics and floor plans via a graphical penetration scheme, menu selection, point alarm association, or text-based commands. Graphics software shall permit the importing of Autocad or scanned pictures for use in the system. Dynamic temperature values, humidity values, flow values and status indication shall be shown in their actual respective locations within the system schematics or graphic floor plan displays, and shall automatically update to represent current conditions without operator intervention and without pre-defined screen refresh rates. Provide the user the ability to display real-time point values by animated visual representation. Animation shall depict movement of mechanical equipment, or air or fluid flow. A library (set) of animation symbols shall be included within the workstation software’s graphics application. Animation shall reflect, ON or OFF conditions, and shall also be optionally configurable for up to five rates of animation speed. Sizable analog bars shall be available for monitor and control of analog values; high and low alarm limit settings shall be displayed on the analog scale. The user shall be able to "click and drag" the pointer to change the setpoint. Provide the user the ability to display blocks of point data by defined point groups; alarm conditions shall be displayed by flashing point blocks. Equipment state or values can be changed by clicking on the associated point block or graphic symbol and selecting the new state (on/off) or setpoint. State text for digital points can be user-defined up to eight characters. Colors shall be used to indicate status and change as the status of the equipment changes. The state colors shall be user definable. The windowing environment of the PC operator workstation shall allow the user to simultaneously view several applications at a time to analyze total building operation or to allow the display of a graphic associated with an alarm to be viewed without interrupting work in progress. Off the shelf graphic software, Microgafx Designer or Corel Draw software, shall be provided to allow the user to add, modify or delete system graphic background displays. A clipart library of HVAC application and automation symbols shall be provided including fans, valves, motors, chillers, AHU systems, standard ductwork diagrams and laboratory symbols. The user shall have the ability to add custom symbols to the clipart library. The clipart library shall include a minimum of 400 application symbols. In addition, a library consisting of a minimum of 700 graphic background templates shall be provided. The Graphics application shall include a set of standard Terminal Equipment controller application-specific background graphic templates. Templates shall provide the automatic display of a selected Terminal Equipment controller’s control values and parameters, without the need to create separate and individual graphic files for each controller. 2.12 FIELD DEVICES A. Provide instrumentation as required for monitoring, control or optimization functions. All devices and equipment shall be approved for installation in the City of Baltimore. . B. Room Temperature Sensors: Digital room sensors shall have LCD display, day / night override button, and setpoint slide adjustment override options. The setpoint slide adjustment can be software limited by the automation system to limit the amount of room adjustment. Temperature monitoring range +20/120°F -13° to 49°C) Output signal Changing resistance


Accuracy at Calibration point +0.5°F (+/- 0.3°C) Set Point and Display Range 55° to 95° F (13° to 35°C) Liquid immersion temperature: Temperature monitoring range +30/250°F (-1°/121°C) Output signal Changing resistance Accuracy at Calibration point +0.5°F (+/-0.3°C) Duct (single point) temperature: Temperature monitoring range +20/120°F (-7°/49°C) Output signal Changing resistance Accuracy at Calibration point +0.5°F (+/-0.3°C) Duct Average temperature: Temperature monitoring range +20° +120°F(-7°/+49°C) Output signal 4 – 20 mA DC Accuracy at Calibration point +0.5°F (+03°C) Sensor Probe Length 25’ L (7.3m) Outside air temperature: Temperature monitoring range -58°+122° F(-50ºC to +50ºC) Output signal 4 – 20 mA DC Accuracy at Calibration point +0.5°F (+/-0.3°C) C. Liquid Differential Pressure Transmitter Ranges 0-5/30 inches H20 0-25/150 inches H20 0-125/750 inches H20 Output 4 – 20 mA DC Calibration Adjustments Zero and span Accuracy +-0.2% of span Linearity +-0.1% of span Hysteresis +-0.05% of span D. Differential pressure: Unit for fluid flow proof shall be Penn P74. Range 8 to 70 psi Differential 3 psi Maximum differential pressure 200 psi Maximum pressure 325 psi Unit for air flow shall be Siemens Building Technologies SW141. Set point ranges: 0.5” WG to 1.0” WG (124.4 to 248.8 Pa) 1.0” WG to 12.0” WG (248.8 to 497.6 Pa) Static pressure sensor:


Range 0 to .5” WG (0 to 124.4 Pa) 0 to 1” WG (0 to 248.8 Pa) 0 to 2” WG (0 to 497.7 Pa) 0 to 5” WG (0 to 1.2 kPa 0 to 10” WG (0 to 2.5 kPa) Output Signal 4 – 20 mA VDC Combined static error 0.5% full range Operating Temperature -40º to 175º F (-40C to 79.5ºC) F. Air Pressure Sensor: Range: 0 to 0.1 in. water (0 to 24.9 Pa) 0 to 0.25 in. water (0 to 63.2 Pa) 0 to 0.5 in. water (0 to 124.5 Pa) 0 to 1.0 in. water (o to 249 Pa) 0 to 2.0 in water 90 to 498 Pa) 0 to 5.0 in. water (0 to 1.25 kPa) 0 to 10.0 in.water (0 to 2.49 kPa) Output signal 4 to 20 mA Accuracy +1.0% of full scale G. Humidity Sensors: Range 0 to 100% RH Sensing Element Bulk Polymer Output Signal 4 – 20 mA DC Accuracy At 77°F(25ºC) + 2% RH H. Insertion Flow Meters (Equal to Onicon Series F-1200) Sensing Method Impedance Sensing Accuracy + 2% of Actual Reading Maximum Operating Pressure 400 PSI Output Signal 4 – 20 mA Bi-directional where required. I. Pressure to Current Transducer Range 3 to 15 psig (21 to 103 kPa) Output signal 4 – 20 mA Accuracy + 1% of full scale (+ 0.3 psig) J. Control Valves (all control valves shall have electric actuators). Electric Control Rangeability 40:1 Flow Characteristics Modified. Equal percentage Control Action Normal open or closed as indicated Medium Water Body Type Screwed ends 2” and smaller, flanged


valves 2½” and larger Body Material Bronze Body Trim Bronze Stem Stainless Steel Actuator 0-10 VDC, 4-20 MA or 2 position 24 VAC/120VAC All automatic temperature control valves in water lines shall be provided with characterized throttling plugs and shall be sized for minimum 25% of the system pressure drop or 5 psi, whichever is less. Two position valves shall be line size. Two-way modulating valves in variable flow heating water systems shall utilize pressure independent control valves equal to Griswold Controls PIC valve. Valve shall be sized for a maximum pressure loss of 5 psig and have full authority over the entire operating range. K. Damper Actuators

1. Electric control shall be Siemens Building Technologies OpenAir™ direct coupled actuators.

2. Damper actuators shall be Brushless DC Motor Technology with stall protection, bi-

directional, fail safe spring return, all metal housing, manual override, independently adjustable dual auxiliary switch. The actuator assembly shall include the necessary hardware and proper mounting and connection to a standard 1/2” diameter shaft or damper blade.

3. Actuators shall be designed for mounting directly to the damper shaft without the

need for connecting linkages.

4. All actuators having more than 100 lb-in torque output shall have a self-centering damper shaft clamp that guarantees concentric alignment of the actuator’s output coupling with the damper shaft. The self-centering clamp shall have a pair of opposed “v” shaped toothed cradles; each having two rows of teeth to maximize holding strength. A single clamping bolt shall simultaneously drive both cradles into contact with the damper shaft.

5. All actuators having more than a 100 lb-in torque output shall accept a 1” diameter

shaft directly, without the need for auxiliary adapters. 6. All actuators shall be designed and manufactured using ISO900registered

procedures, and shall be Listed under Standards UL873 and CSA22.2 No. 24-93 l. 2.14 MISCELLANEOUS DEVICES A. Thermostats: Room thermostats shall be of the gradual acting type with adjustable sensitivity. They shall have a bi-metal sensing element capable of responding to a temperature change of one-tenth of one degree. (Provide all thermostats with limit stops to limit adjustments as required.) Thermostats shall be arranged for either horizontal or vertical mounting. In the vertical position thermostat shall fit on a mullion of movable partitions without overlap. Mount the thermostat covers with tamper-proof socket head screws.


B. Freezestats: Install freezestats as indicated on the plans and provide protection for every square foot of coil surface area with one linear foot of element per square foot of coil. Upon detection of low temperature, the freezestats shall stop the associated supply fans and return the automatic dampers to their normal position. Provide manual reset. C. Firestats: Provide manual reset, fixed temperature line voltage type with a bi-metal actuated switch. Switch shall have adequate rating for required load. D. Current Sensing Relay: Provide solid-state, adjustable, current operated relay. Provide a relay which changes switch contact state in response to an adjustable set point value of current in the monitored A/C circuit. Adjust the relay switch point so that the relay responds to motor operation under load as an “on” state and so that the relay responds to an unloaded running motor as an “off” state. A motor with a broken belt is considered an unloaded motor. Provide for status device for all fans and pumps. 2.18 DAMPERS: A. Control Dampers:

1. The Temperature Control Contractor shall provide all automatic control dampers of the types indicated on the plans and not specified to be integral with other equipment. Frames shall be not less than 16 gauge galvanized steel. Blades shall not be over 6 inches wide airfoil shaped double skin construction of 14 gauge equivalent thickness. Bearings shall be stainless steel sleeves with 1/2" shafts. Blade edge seals shall be vinyl blade with flexible metal compressible jamb seals of the tight-seal spring type. Dampers and seals shall be suitable for temperature ranges of -40°F to 250°F.

2. All proportional control dampers shall be opposed blade type and all two-position

dampers shall be parallel blade type. 3. Dampers shall be sized to meet flow requirements of the application. The sheet

metal Contractor shall furnish and install baffles to fit the damper to duct size. Baffles shall not exceed 6".

4. Dampers shall be minimum leakage type to conserve energy and the temperature

control manufacturer shall submit leakage and flow characteristic data for all control dampers with the temperature control submittal. Maximum leakage shall be 3 CFM/Sq.Ft. at static pressure of 1 inch W.C. for a damper width of 48 inches.

5. Ultra-low leakage dampers for outside air intakes shall have blade edges fitted with

replaceable, snap-on, inflatable seals to limit damper leakage to 1/2 percent at applied static pressure.

6. Medium and low pressure rectangular control dampers shall be Type CD60 airfoil

low leakage damper as manufactured by Ruskin or as approved equal of American


Warming and Ventilating, Air Balance and Arrow. Round control dampers shall be Type CERS25 with blade edge seals as manufactured by Ruskin or as approved equal.

B. Damper Motors:

1. Damper motors shall be either normally closed or normally open, as specified, to

provide the proper sequence of operation. The damper motor power unit shall be rolling diaphragm type with low reversal loss. Motors shall have ample capacity to handle the required load under all conditions. Where sequencing is required, damper motors for the fan system shall be equipped with non-leaking type of positive positioning device, which shall make available the full power of the diaphragm motor in both directions so as to produce the exact position of damper demanded of the control, regardless of external forces such as air velocity, pressure, friction, etc.

2. Positioners: Positive positioning relays shall be provided on damper motors to

provide sufficient power, sequencing, repeatability and speed of response. Positioner shall allow field adjustment of both starting pressure and operating span. Positioner shall provide an anti-lockup feature and shall provide accurate positioning without excessive air bleed.

PART 3 - EXECUTION 3.1 PROJECT MANAGEMENT A. Provide a designated project manager who will be responsible for the following: Construct and maintain project schedule, On-site coordination with all applicable trades, subcontractors, and other integration vendors, Authorized to accept and execute orders or instructions from owner/architect, Attend project meetings as necessary to avoid conflicts and delays, Make necessary field decisions relating to this scope of work, and Coordination/Single point of contact. 3.2 SEQUENCE OF OPERATION A. Job specific - per job requirements 3.3 POINT SCHEDULE MATRIX - I/0 SCHEDULE A. Attached I/O schedule. The contractor shall collaborate with the owner directly to determine the owner's preference for naming conventions, etc., before entering the data in to the system. 3.4 START-UP AND COMMISSIONING A. When installation of the system is complete, calibrate equipment and verify transmission media operation before the system is placed on-line. All testing, calibrating, adjusting and final field tests shall be completed by the manufacturer. Verify that all systems are operable from local controls in the specified failure mode upon panel failure or loss of power.


B. Provide any recommendation for system modification in writing to owner. Do not make any system modification, including operating parameters and control settings, without prior approval of owner. C. After manufacturer has completed system start-up and commissioning. Joint commissioning of integrated system segments shall be completed. 3.5 ELECTRICAL WIRING AND MATERIALS A. Install, connect and wire the items included under this Section. This work includes providing required conduit, wire, fittings, and related wiring accessories. All exposed wiring shall be installed in conduit. Plenum rated cable may be utilized in concealed and accessible areas. B. Provide wiring between thermostats, aquastats and unit heater motors, all control and alarm wiring for all control and alarm devices for all Sections of Specifications. C. Provide 120 volt, single phase, 60 hertz emergency power to every BMS DDC Controller panel, HVAC/Mechanical Equipment Controller, PC console, power supply, transformer, annunciator, modems, printers and to other devices as required. It is the intent that the entire building management system except terminal equipment shall be operative under emergency power conditions in the building. The power supplies are to be extended in conduit and wire from emergency circuit breakers. D. Provide status function conduit and wiring for equipment covered under this Section. E. Provide conduit and wiring between the BMS panels and the temperature, humidity, or pressure sensing elements, including low voltage control wiring in conduit. F. Provide conduit and control wiring for devices specified in this Section. G. Provide conduit and signal wiring between motor starters in motor control centers and high and/or low temperature relay contacts and remote relays in BMS panels located in the vicinity of motor control centers. H. Provide conduit and wiring between the PC workstation, electrical panels, metering instrumentation, indicating devices, miscellaneous alarm points, remotely operated contractors, and BMS panels, as shown on the drawings or as specified. I. All wiring to be compliant to local building code and the NEC. J. Provide electrical wall box and conduit sleeve for all wall mounted devices. 3.7 PERFORMANCE A. Unless stated otherwise, control temperatures within plus or minus 2 degrees F, humidity within plus or minus 3% of the set point and static pressure within 10% of set point. 3.8 COMMISSIONING, TESTING AND ACCEPTANCE


A. Perform a three-phase commissioning procedure consisting of field I/O calibration and commissioning, system commissioning and integrated system program commissioning. Document all commissioning information on commissioning data sheets which shall be submitted prior to acceptance testing. Commissioning work which requires shutdown of system or deviation from normal function shall be performed when the operation of the system is not required. The commissioning must be coordinated with the owner and construction manager to ensure systems are available when needed. Notify the operating personal in writing of the testing schedule so that authorized personnel from the owner and construction manager are present throughout the commissioning procedure. Prior to system program commissioning, verify that each control panel has been installed according to plans, specifications and approved shop drawings. Test, calibrate and bring on line each control sensor and device. Commissioning to include, but not be limited to: Sensor accuracy at 10, 50 and 90% of range, Sensor range, Verify analog limit and binary alarm reporting, Point value reporting, Binary alarm and switch settings, Actuator ranges, Fail safe operation on loss of control signal, electric power, network communications. B. After control devices have been commissioned (i.e., calibrated, tested and signed off), each BMS program shall be put on line and commissioned. The Contractor shall, in the presence of the owner and construction manager, demonstrate each programmed sequence of operation and compare the results in writing. In addition, each control loop shall be tested to verify proper response and stable control, within specified accuracies. System program test results shall be recorded on commissioning data sheets and submitted for record. Any discrepancies between the specification and the actual performance will be immediately rectified and retested. C. After all BMS programs have been commissioned, the Contractor shall verify the overall system performance as specified. Tests shall include, but not be limited to: Data communication, both normal and failure modes, Fully loaded system response time, Impact of component failures on system performance and system operation, Time/Date changes, End of month/ end of year operation, Season changeover, Global application programs and point sharing, System backup and reloading, System status displays, Diagnostic functions, Power failure routines, Battery backup, Smoke Control, stair pressurization, stair, vents, in concert with Fire Alarm System testing, Testing of all electrical and HVAC systems with other division of work. D. Submit for approval, a detailed acceptance test procedure designed to demonstrate compliance with contractual requirements. This Acceptance test procedure will take place after the commissioning procedure but before final acceptance, to verify that sensors and control devices maintain specified accuracy's and the system performance does not degrade over time. E. Using the commissioning test data sheets, the contractor shall demonstrate each point. The contractor shall also demonstrate all system functions. The contractor shall demonstrate all points and system functions until all devices and functions meet specification. F. The contractor shall supply all instruments for testing and turn over same to the owner after acceptance testing. All test instruments shall be submitted for approval. Test Instrument Accuracy: Temperature: 1/4F or 1/2% full scale, whichever is less.


Pressure: High Pressure (psi): ½ psi or 1/2% full scale, whichever is less. Low Pressure: 1/2% of full scale (in w.c.) Humidity: 2% RH Electrical: 1/4% full scale G. After the above tests are complete and the system is demonstrated to be functioning as specified, a thirty day performance test period shall begin. If the system performs as specified throughout the test period, requiring only routine maintenance, the system shall be accepted. If the system fails during the test, and cannot be fully corrected within eight hours, the owner may request that performance tests be repeated. 3.9 TRAINING A. The manufacturer shall provide factory trained instructor to give full instruction to designated personnel in the operation of the system installed. Instructors shall be thoroughly familiar with all aspects of the subject matter they are to teach. The manufacturer shall provide all students with a student binder containing product specific training modules for the system installed. All training shall be held during normal working hours of 8:00 am to 4:30 PM weekdays. B. Provide 40 hours of training for Owner's designated operating personnel. Training shall include: Explanation of drawings, operations and maintenance manuals, Walk-through of the job to locate control components, Operator workstation and peripherals, DDC controller and ASC operation/function, Operator control functions including graphic generation and field panel programming, Operation of portable operator's terminal, Explanation of adjustment, calibration and replacement procedures, Student binder with training modules. C. Since the Owner may require personnel to have more comprehensive understanding of the hardware and software, additional training must be available from the Manufacturer. If such training is required by the Owner, it will be contracted at a later date. 3.10 LOCAL CONTROL AND EMS CONTROL: A. For each rooftop air handling unit as required in the I/O Summary as indicated on the drawings, provide a panel-mounted hand-off-automatic "Local Control"-"EMS Control"-"Off" switch that allows for the EMS or local controls to start/stop systems and/or equipment. B. For each piece of equipment listed under paragraph 3.3A above, provide a red pilot light for "running" and a green pilot light for the "idle". Pilot lights shall be 25,000 hour rated, shall be replaceable from the front, and shall be interlocked with equipment motor starter auxiliary contacts. Provide a red pilot light to indicate failure or alarm conditions (i.e., freeze stat, smoke detectors, load filter, etc.). C. Provide a panel-mounted pump selector switch that shall determine the primary and stand-by status of each pump and shall automatically transfer all associated control functions and interlocks to the selected pumps. All input and output points listed on the EMS point schedule that


are connected through a control panel provided by the ATC Subcontractor shall be wired through dedicated terminal strips. END OF SECTION

GAI# 13034.A Vibration Control June, 2015 15975-1

DIVISION 15 - MECHANICAL SECTION 15975 – VIBRATION CONTROL PART 1 - RELATED DOCUMENTS 1.1 GENERAL: A. All work under this section shall also be subject to the requirements of Section 15100, "General Mechanical Requirements". 1.2 SUMMARY: A. Provide all labor and materials necessary to furnish and install vibration control systems on this project as herein specified and/or shown on the drawings. B. Mount all mechanical equipment on suitable vibration isolators so as to prevent transmission of vibration into or through the building structure. Isolators shall be as manufactured by Mason Industries, Inc., or Amber Booth, and shall be selected by the Isolator Manufacturer for each item of equipment in accordance with requirements hereinafter specified. C. The equipment manufacturer shall supply all fan and motor bases, cradles, pipe/duct hangers, spring and/or neoprene isolators, neoprene pads, flexible connectors, etc., as a coordinated package by a single manufacturer. D. Select isolators for uniform static deflections according to distribution of weight; and for not less than the indicated isolation efficiency with the lowest rotational speed of equipment as the disturbing frequency. E. Isolators and bases shall be stable during stopping and starting of equipment without transverse or eccentric movement of equipment, and shall be designed to resist horizontal forces of equipment which may operate unbalanced. F. In general, select isolators on the basis of criteria as specified in the latest edition of the ASHRAE Applications Handbook. 1.3 SUBMITTALS A. Shop Drawings: Submit Shop Drawings showing isolator types and sizes, locations with static and dynamic load on each location, and installation details. B. Product Data: Submit manufacturer’s product data and certificates of compliance for each type of vibration control product provided. C. Measured Equipment Deflections: Upon completion of vibration control work, prepare a report showing measured device deflections for each major item of equipment indicated. 1.4 MANUFACTURER RESPONSIBILITIES


A. The Contractor shall arrange with the manufacturers of the vibration isolation and seismic control devices to provide the following services along with the specified equipment and control devices: 1. Determine vibration isolation and seismic restraint device sizes and locations.

2. Provide piping, ductwork and equipment isolation systems as indicated. 3. Guarantee specified isolation system deflection. 4. Provide installation instructions and drawings. 5. Provide resilient restraining devices as required to limit equipment and piping motion

in excess of 1/4-inch as approved by the Engineer.

1.5 QUALITY ASSURANCE A. The determination of static, and dynamic loadings and the design of brackets, supports, connections, restraints and other structural elements shall be performed by a registered professional civil or structural engineer. PART 2 - PRODUCTS 2.1 MANUFACTURERS: A. Isolators of listed manufacturers shall be the equivalent of the specified types by Mason Industries, Inc. B. Manufacturers: Mason Industries, Inc., Amber Booth, Korfund, Vibration Eliminator, or approved equal. 2.2 CORROSION PROTECTION FOR STEEL PARTS: A. Where steel parts are exposed to weather, provide hot-dipped galvanized coating of at least 2 ounces of zinc per square foot of surface. Coat springs with neoprene. 2.3 NEOPRENE: A. Grade durometer 40, 50 or 60 and oil-resistant. 2.4 SPRING ISOLATORS: A. General: Provide spring isolators or protected spring isolators that are adjustable and laterally stable with free-standing springs of horizontal stiffness at minimum 80 percent of the vertical (axial) stiffness. For machine-attached and floor-attached restraining elements, separate from metal-to-metal contact by neoprene cushions 1/8" thick minimum. Provide neoprene acoustic friction pads at least 1/4" thick.


B. Type C: Spring Isolator--Spring type isolators shall be free-standing and laterally stable without any housing and complete with 1/4" neoprene acoustical friction pads between the baseplate and the support. All mountings shall have leveling bolts that must be rigidly bolted to the equipment. Spring diameters shall be no less than 0.8 of the compressed height of the spring at rated load. Springs shall have a minimum additional travel to solid equal to 50% of the rated deflections, compressed spring height and solid spring height. Mountings shall be Type SLF. 2.5 FLOOR-MOUNTED ISOLATORS: A. Neoprene Isolation Pads: Provide pads at least 1/4" thick with cross-ribbed or waffle design. For concentrated loads, provide steel bearing plates bonded or cold cemented to the pads. B. Neoprene Isolators--Rubber (neoprene)-in-shear mounting: Provide molded neoprene isolators having steel base plates with mounting holes and, at the top, steel mounting plates with mounting holes or threaded inserts. Provide elements of type and size coded with molded letters or color-coded for capacity identification. Embed metal parts completely in neoprene. Double deflection neoprene mountings shall have a minimum static deflection of 0.35". Bolt holes shall be provided for these areas where bolting is required. On equipment such as small vent sets and close coupled pumps, steel rails shall be used above the mounting to compensate for the over-hang. 2.6 SUSPENSION ISOLATORS: A. General: Provide hangers with suspension isolators encased in open steel brackets. Isolate hanger rods from isolator steel brackets with neoprene-lined opening. B. Suspension Spring Isolators--Vibration hangers shall contain a steel spring and 0.3" deflection neoprene element in series. The neoprene element shall be molded with a rod isolation bushing that passes through the hanger box. Spring diameters and hanger box lower hole sizes shall be large enough to permit the hanger rod to swing thru a 30o arc before contacting the hole and short circuiting the spring. Springs shall have a minimum additional travel to solid equal to 50% of the rated deflection. Submittals shall include a scale drawing of the hanger showing the 30o capability. 2.7 BASES: A. Concrete Bases--Vibration isolator manufacturer shall furnish rectangular structural beam or channel concrete forms for floating foundations. The base depth need not exceed 12" unless specifically recommended by the base manufacturer for mass or rigidity. In general, bases shall be a minimum of 1/12th of the longest dimension of the base, but not less than 6". Forms shall include minimum concrete reinforcement consisting of half inch bars or angles welded in place on 6" centers running both ways in a layer 1-1/2" above the bottom, or additional steel as is required by the structural conditions. Forms shall be furnished with steel members to hold anchor-bolt sleeves when the anchor bolts fall in concrete locations. Height saving brackets shall be employed in all mounting locations to maintain a 1" clearance below the base. PART 3 - EXECUTION 3.1 GENERAL PROVISIONS:


A. Install vibration-and-noise isolation materials and equipment as indicated and in accordance with Machinery Manufacturer's instructions. B. Where neoprene elements of vibration isolator may be subjected to high pipe temperatures above 160 deg F, provide metal heat shields or thermal isolators. C. All vibration isolators exposed to weather shall be hot dipped galvanized with springs coated with neoprene in accordance with paragraph 2.2 hereinbefore described. D. Anchor Bolts and Grout: Secure machinery to foundations and inertia bases with anchor bolts. Grout equipment with baseplates, the full area under baseplates with premixed non-shrinking grout. After grout has set, remove wedges, shims, and jack bolts and fill spaces with grout. E. Common Machinery Foundations: Mount electrical motors on the same foundations as driven machinery. Support piping connections, strainers, valves, and risers on the same foundation as the pumps. F. Machinery: Provide vibration isolators, flexible connectors and seismic snubbers in accordance with manufacturer's recommendations. Machinery with spring isolators or protected spring isolators shall rock or move freely within limits of stops or seismic snubber restraints. G. Stability: Isolators shall be stable during starting and stopping of machinery without traverse and eccentric movement of machinery that would damage or adversely affect the machinery or attachments. H. Lateral Motion: The installed vibration isolation systems for each piece of floor or ceiling mounted machinery shall have a maximum lateral motion under machinery start up and shut down conditions of not more than 1/4". Restrain motions in excess by approved spring mountings. I. Roof and Upper Floor Mounted Machinery: On the roof or upper floors, mount machinery on isolators with vertical stops. Rest isolators on beams or structures designed and installed in accordance with the SMACNA ASMM Plate 61. J. Electrical Connections: Provide flexible conduit or multiple conductor cable connections for machinery with sufficient extra length to permit 2" minimum displacement in any direction without damage. 3.2 ADJUSTING AND CLEANING A. Clean each vibration control unit and verify that each is working freely and that there is no dirt or debris in the immediate vicinity that could possibly short-circuit unit isolation. 3.3 START-UP A. Before start-up of equipment, check level of equipment or apparatus as required. Start up and check for proper deflection of vibration isolation devices. Make necessary adjustments. 3.8 ISOLATION FOR SPECIFIC EQUIPMENT:


A. The vibration isolator manufacture shall provide isolators for all pieces of equipment provided for the job. Unless otherwise indicated, isolator shall be selected by the isolator manufacturer on the basis of criteria as specified in the ASHRAE 1991 Applications Handbook Chapter 42, Table 34 and Figure 44 unless a more stringent requirement is indicated.

END OF SECTION