SECTION 22 00 00 PLUMBING PART 1 GENERAL · 2017. 12. 5. · Chabot College Plant Chiller Addition...

Chabot College Plant Chiller Addition Chabot-Las Positas Community College District

Costa Engineers SECTION 22 0000 - PLUMBING Project No. 17035 Page 1

SECTION 22 00 00

PLUMBING

PART 1 GENERAL

1.1 SUMMARY

A. This Specification establishes the required standards for all labor, materials, equipment, and workmanship in connection with the furnishing, fabrication, and installation of “Plumbing” systems. Plumbing work includes, but is not necessarily limited to, the following items of work:

1. A complete system of soil, waste, vent and sanitary sewer piping and structures, including provisions for mechanical equipment drainage; and connection of same to existing soil, waste, vent and sanitary sewers, located approximately as indicated on the Drawings.

2. Water distribution system, complete, from points of contact with site domestic water systems, located approximately as indicated on the Drawings, to all plumbing fixtures, mechanical equipment, building specialties, and Owner supplied equipment scheduled for service on the Drawings.

3. Flashing of all plumbing pipe penetrations through exterior walls, roofs, and foundations. 4. Testing and adjusting of all piping systems and equipment herein specified. 5. Sterilization of domestic water systems. 6. Pipe wrapping and insulation.

B. Should any work or material not be included in the Drawings or Specifications but is nevertheless necessary for the proper execution of the stated scope therefore for full compliance with codes, laws, rules and regulations, the Contractor shall understand such work and material is required, and shall perform all such work and furnish such material as fully as if it were particularly delineated or described.

1.2 QUALITY ASSURANCE

A. Codes and Standards: Conform to all applicable codes and standards as stated herein, including the following: 1. American National Standards Institute (ANSI) 2. American Society of Mechanical Engineers (ASME) 3. American Society for Testing and Materials (ASTM) 4. California Building Code (CBC) 5. California Plumbing Code (CPC) 6. California Energy Conservation Code, Title 24 7. State of California Administrative Code (CAC) Titles 8, 17, and 24 8. California Electric Code (CEC) 9. National Electrical Manufacturers Association (NEMA) 10. Underwriters’ Laboratories (UL) 11. City Fire Marshal requirements 12. Comply with the latest edition of all applicable standards, including AWWA, PDI, and OSHA 13. NSF/ANSI 61 Standard, Drinking Water System Components - Health Effects for fixture

materials that will be in contact with potable water. 14. AB 1953, Amendments to Section 116875 of the Health and Safety Code relating to lead

plumbing.

B. Minimum requirements: The requirements of these are the minimum that will be allowed unless such requirements are exceeded by applicable codes or regulations, in which the regulatory codes or regulation requirements shall govern.



1.3 LICENSING

A. All plumbing systems shall be installed by a C-36 Plumbing Contractor. Plumbing systems include: waste removal and connection of on-site waste disposal systems; piping, storage tanks, and venting for supply of gases and liquids for any purpose; all gas appliances, flues, and gas connections; water and gas piping from the owner’s side of utility meter to the structure or fixed works; installation of any type of equipment to heat water or fluids to a suitable temperature; and maintenance and replacement of the items described above, including health and safety devices.

1.4 SUBMITTALS

A. Submittals shall be submitted to the Engineer for review and approval, per the following requirements. 1. Product Data: For each type of product.

a Submit cut sheets for each plumbing fixture. Include selected fixture and trim, fittings, accessories, appliances, appurtenances, equipment, and supports and indicate materials and finishes, dimensions, construction details, and flow control rates for each fixture indicated.

b Submit manufacturer’s product data for all plumbing piping, fittings, materials, and equipment.

2. Shop Drawings: Submit shop drawings to Engineer for approval, prior to fabrication or installation of any work. Do not install equipment or piping until layout drawings have been approved. Any work installed without prior shop drawing approval shall be removed at the Contractor’s expense. a Prepare complete consolidated and coordinated layout drawings for all new systems,

and for existing systems that are in the same areas. Shop drawings shall be prepared using AutoCAD 2012 or newer and shall be drawn at a minimum ¼” = 1’ - 0” scale. Sections, details, and diagrams shall be to required scales for specified areas.

b Complete and detailed shop drawings shall be maintained throughout the coordination and construction phase, indicating all equipment and trades’ work clearly. All equipment including piping, etc. shall clearly identify both top and bottom elevations as well as distances from equipment to established building lines. Coordinate with other trades and field conditions and show dimensions and details including building construction and access for servicing.

c Include diagrams for all piping, and power, signal and control wiring. d Use of contract documents for shop drawings is not acceptable

1.5 COORDINATION

A. All work shall be coordinated with water, gas, sanitary sewer, and other services on the site. The locations of points of connection to the site services shall be confirmed prior to commencement of any and all work required under this Section of the Specifications.

B. Coordinate roughing-in and final plumbing fixture locations, and verify that fixtures can be installed to comply with original design and referenced standards.

PART 2 PRODUCTS

2.1 GENERAL

A. Only specified materials shall be utilized in the work of this Section unless substitutions have been approved by the Engineer.

B. All materials shall be new and unused, of the best quality for the intended use, and shall be listed by the ASA, AGA, and UL as meeting their requirements and bearing their label wherever standards have been established and label services are regularly furnished by them.



2.2 PIPE, FITTINGS

A. General 1. Tracer wire shall be installed with all non-metallic piping below grade. Tracer wire shall be

solid core copper, 14 gauge minimum, laid continuously along pipes. Wire shall be "ty-wrapped" to pipe at eight feet on center. Tracer wire shall terminate in concrete access boxes at the beginning and terminal ends of the buried pipe.

2. Vent piping shall have vandal resistant mushroom vent caps. 3. All accessible pipe 2" and smaller shall be threaded. Fittings for threaded pipe shall be

150-lb. malleable iron, screwed and banded.

B. Below grade soil, waste and vent piping 1. Lines 2" and larger shall be standard weight, no-hub cast iron soil pipe and fittings

manufactured from gray cast iron with a tensile strength of not less than 21,000 psi, bituminous coated interior and exterior, conforming to the requirements of ASTM A888 and CISPI Standard 301. Each length of pipe shall be hydrostatically (water) tested by the manufacturer to verify compliance. All pipe and fittings shall be marked with the collective trademark of the Cast Iron Soil Pipe Institute and listed by NSF international. All pipe and fittings shall be of the same manufacturer. Approved manufacturers: AB&I, Charlotte, or Tyler

2. Joints: No hub couplings shall conform to CISPI 310 Standard, current edition. a Super-duty no-hub couplings shall have a shield constructed of type 304 stainless

steel with a minimum thickness of 0.016” (28 gauge). The worm gear drive clamps shall have a hexagon head to accept a 3/8” socketed torque wrench. The clamps shall be tightened to a minimum of 80 in pounds. The gaskets shall be manufactured using neoprene rubber meeting the requirements of ASTM C-564. Couplings shall meet FM 1680 class 1. Smooth shielded couplings shall have a type 304 stainless steel shield with a minimum thickness of 0.025” (24 gauge). Couplings 1-1/2” through 4” shall have four bands and 5” through 10” shall have six bands. Approved manufacturers: Husky SD4000, Clamp-All High Torq 125, or MG Couplings.

b Couplings shall be installed in accordance with manufacturer’s installation instructions, local code requirements, and shall be tightened using a calibrated torque wrench. The clamps shall be tightened between 115 and 125 inch pounds.

2.3 Drainage Pipe:

A. Drainage piping shall be Anvil, Mueller, Watts, or approved equal. 1. 1 ¼ inch and larger shall be type DWV copper tube, ASTM B306.

B. Drainage fittings shall be ASME B16.23, cast copper or ASME B16.29, wrought copper, solder-joint fittings. 1 ¼ inches & smaller, standard pressure fittings.

C. Solder shall be ASTM B 32, lead free with ASTM B 813, water-flushable flux

2.4 UNIONS

A. Steel pipe unions shall be malleable iron, 150 lb., ground joint, Anvil Figure 463.

B. Copper pipe unions shall be soldered joint, Nibco series 633 or 733, Mueller, or equal.

C. Dielectric unions shall be Epco, Watts, Zurn Wilkins, or equal.

2.5 DIELECTRIC FITTINGS

A. Precision Plumbing Products, “Clear Flow” series, threaded dielectric fittings, sizes 19100P thru 19195P.

B. Dielectric fittings shall have zinc electroplated steel casing, and NSF/FDA listed lining. Fittings shall meet the requirements of ASTM standard F1545 for continuous use at temperatures up to 225°F (- +5°F) and for pressures up to 300 psi, and shall achieve a dielectric waterway in all potable water and appropriate HVAC applications.



2.6 VALVES, SPECIALTIES

A. General Requirements 1. All valves, except pressure reducing and control valves, shall be the same size as the pipe

to which they are installed. 2. All valves of a particular type and size range shall be the product of one manufacturer. 3. Valve body materials shall be compatible with piping system materials. 4. Provide a union immediately downstream from each valve, unless the valve is flanged. 5. All valves shall be installed with the stem 45 degrees above horizontal, if possible. In no

case shall the stem be installed below horizontal. 6. Where insulation is indicated, install extended stem valves arranged in proper manner to

receive insulation.

B. Ball Valves (threaded): Valves shall be rated 600 PSI non-shock CWP and have 2-pc. Lead-free dezincification-resistant body, end piece, stem and ball, TFE seats, full port, separate pack nut with adjustable stem packing and anti-blowout stems. Valves ends shall have full depth ANSI threads. Valves shall be 3rd party certified to Annex G of NSF/ANSI 61. Nibco T-685-80-LF, Watts LFB-6080, or KITZ 858.

C. Ball Valves (solder): Nibco S-685-80-LF, Watts LFB-6081, or KITZ 859; two piece, full port, lead free, lever handle, 600 psi CWP

D. Gate Valves: 1. 3" and smaller shall be Nibco T134, Stockham B-120, KITZ 42T; bronze body, union

bonnet, rising stem, solid wedge, 150 lb. with wheel handle. 2. Larger than 3" shall be Nibco F-617-0 or KITZ 72; iron body, bolted bonnet, outside screw

and yoke, solid wedge, 125 lb. with wheel handle.

E. Lift Check Valves (vertical): Nibco T-480-Y-LFor KITZ 836; bronze body, inline lift type, Teflon seat, and discs, spring actuated, 125 lb.

F. Swing Check Valves (horizontal): Nibco T-413-Y-LF, Stockham B-345, or KITZ 822T; bronze body, Y-pattern swing-type, rated 200 PSI non-shock CWP. Body, bonnet, and disc hanger shall be of lead-free dezincification-resistant material and TFE seat disc. Valve ends shall be threaded type. Valves shall be 3rd party certified to Annex G of NSF/ANSI 61.

G. Backflow Preventers: 1. Pressure type: Zurn Wilkins #720A series or equal FEBCO, Watts, Ames 2. Main cold water line shall have reduced pressure type:

a ¼" to 2" – Zurn Wilkins #975-XLMS series, or equal FEBCO, Watts, Ames b 2½" to 10" – Zurn Wilkins #375 series, or equal FEBCO, Watts, Ames

H. Water Pressure Regulating Valves: Wilkins 500 YSBR series. Install where pressure to building exceeds 70 psi.

2.7 FLOOR SINKS

A. Floor Sinks: Where shown on the Drawings, floor drains and floor sinks shall be as follows: 1. FS-1: Zurn Z-1901-P-2, or equal Jay R Smith. 12" x 12" x 8" deep, white acid resisting

interior, aluminum anti-splash interior dome strainer, ½ trap primer connection, ½" grate, 2" pipe size. Set rim flush with finished floor.

2.8 SLEEVES, WALL PLATES

A. Service pipe through exterior walls, roofs: Sioux Chief or equal wall and ceiling plates; chrome plated at finished rooms.

B. Pipes through, under footings: 18 gauge iron sleeves two diameters larger than pipe, cast in concrete, annular space filled with mastic or plastic bituminous cement.



C. Pipes through fire rated walls shall be protected with fire retardant mastic as detailed on the drawings. Installation shall be in full accordance with the requirements of the UL system number. Hilti or approved equal.

D. Pipes through floors, interior concrete walls, and through fire rated walls and smoke stop partitions: 18 gauge iron sleeves, two diameters larger than pipe, annular space filled with 3M Brand Fire Barrier CP-25 caulk.

2.9 VIBRATION AND SOUND CONTROL

A. Make all necessary provisions to prevent the transmission of vibration to the building structure and the passage of noise from the equipment rooms to other rooms. Provisions shall include: vibration isolators for motor driven equipment; flexible pipe connections to motor driven equipment; resilient mounting for piping; sealing off pipe and duct penetrations of walls, floors and ceilings of equipment rooms.

B. Provide pipe and sound isolation for all piping through walls, Acoustoplumb by LSP/Specialty Products, Holdrite Silencer by Hubbard Enterprises, or equal.

2.10 HANGERS AND SUPPORTS

A. Pipe supports shall be Superstrut or equivalent Cooper B-Line, Nibco (Tolco), or Anvil International.

B. All hangers shall be electro-chromate finished. Hanger rods shall have electro-galvanized finish.

C. Copper tubing:

1. C-711 copper tube hanger complete with C-716 isolator. 2. Copper pipe shall be attached to channels with A-716 “Cush-A-Clamp”.

D. Trapeze hangers:

1. Grouped pipes may be supported by A-1200 channel bolted to rods.

E. Point of support connectors:

1. Wood construction: a Stationary pipes: 540 side beam hangers b Pipes subject to movement: S541

2. New concrete construction: 452 inserts. 3. Existing concrete construction: Phillips “Red-Head” 3-piece concrete anchors or Hilti “Quik-

Bolt”, drilled-in, concrete anchors. 4. Steel beams: Series 500 beam brackets. 5. Plywood decks: machine bolts, nuts and washers.

F. Vertical pipe risers:

1. Vertical pipe risers shall be securely supported with C-720 pipe clamps anchored to construction. a C-720P for bare cold water pipe, anchored to construction.

G. Pipes through studs or joists shall be isolated from structure with properly sized Hubbard "Hold-Rite" suspension clamps or LSP “Acousto-Plumb” system.

2.11 PIPE LABELS

A. Brady, Seton or approved equal pipe labels. Preprinted, color-coded, with lettering indicating service, and showing flow direction.

B. Self-Adhesive Pipe Labels: Printed plastic with contact-type, permanent-adhesive backing.



C. Pipe Label Contents: Include identification of piping service using same designations or abbreviations as used on Drawings, pipe size, and an arrow indicating flow direction.

D. Flow-Direction Arrows: Integral with piping system service lettering to accommodate both directions, or as separate unit on each pipe label to indicate flow direction.

E. Label Sizes (per ANSI A13.1 / ASME A13.1-2007 Standards):

1. For pipes or covering with outside diameter ¾ to 1¼ inch, minimum length of label: 8 inches, minimum height of letters: ½ inch.

2. For pipes or covering with outside diameter 1½ to 2 inches, minimum length of label: 8 inches, minimum height of letters: ¾ inch.

3. For pipes or covering with outside diameter 2½ to 6 inches, minimum length of label: 12 inches, minimum height of letters: 1¼ inch.

PART 3 EXECUTION

3.1 SITE CONDITIONS

A. This Contractor shall be held to have examined the site and compared it with the Contract Documents, and to have satisfied himself as to the conditions under which the work is to be performed. In the event of discrepancy, Contractor shall notify the Engineer and proceed as directed. Contractor shall be held responsible for all existing conditions, whether or not accurately described, and no allowance shall subsequently be made on his behalf for any error, omission, or extra expense to which he may be put due to failure or neglect on his part to make such examination and notification.

B. Prior to commencing the work of this Section, this Contractor shall inspect the installed work of other trades and verify that their work is sufficiently complete to permit the start of work under this Section and that the completed work will be in complete accordance with the original design. In the event of discrepancy immediately notify the Engineer and proceed as directed.

3.2 ACCESSIBILITY

A. Equipment shall be placed and piping connections made in such a manner that all routine adjustments and maintenance operations may be carried out without inconvenience and so that all code requirements for clearances are maintained.

3.3 INSTALLATION, GENERAL

A. Provide all necessary cutting in connection with the work of this Section. NO structural members shall be drilled, bored, or notched in a manner that will impair their structural capacity; all penetrations of concrete or masonry shall be made with core drills; NO cutting shall be done without the approval of the Engineer.

3.4 SEISMIC FORCE RESISTANCE

A. All plumbing piping systems shall adhere to the SMACNA “Seismic Restraint Manual: Guidelines for Mechanical Systems”, 2009 Edition with OSHPD amendments.

B. Piping: 1. Flexibility of piping systems must be maintained by the use of flexible devices at critical

points at junctions of separate building structures. Braces or anchors shall be designed to damp oscillations or check excessive movement. Flexible devices for piping of gas shall be loops or offsets. Flexible devices for other piping may be loops, Victaulic grooved, or roustabout couplings.

2. Piping at tops and bottoms of risers are critical points where flexibility is required, as well as at changes in direction on long runs of piping 4" and larger.



3. Tops of risers shall be restrained from motion in horizontal direction, and midpoints shall be anchored in all directions.

4. All piping systems bracing shall be designed to resist a seismic force and displacement in accordance with CBC Section 1615A1.12 through 1615A.1.22 and ASCE 7-10 Section 13.6.8 & 13.6.9.

5. The following table shows maximum lengths of shapes used for sway bracing:

TYPE/SIZE MAX. LENGTH TYPE/SIZE MAX. LENGTH

Angle (l/r=200) Flat Bar (l/r=200)

1½ x 1½ x ¼" 4'-10" 1½ x ¼" 1'-2"

2 x 2 x ¼" 6'-6" 2 x ¼" 1'-2"

2½ x 2½ x ¼" 8'-2" 2 x ⅜" 1'-9"

3 x 3 x ¼" 9'-10"

Threaded Rod Pipe (Schedule 40)

⅜" 1'-7" 1" 7'-0"

½" 2'-1" 1¼" 9'-0"

⅝" 2'-7" 1½" 10'-4"

¾" 3'-1" 2" 13'-1"

1" 4'-2"

3.5 IDENTIFICATION OF SYSTEMS

A. Nameplates

1. Nameplate bearing manufacturer's name or identifiable trademark shall be securely affixed in a conspicuous place on equipment, or name or trademark cast integrally with equipment, stamped or otherwise permanently marked on each item of equipment.

B. Piping

1. Locate pipe labels where piping is exposed or above accessible ceilings in finished spaces; machine rooms; accessible maintenance spaces such as shafts, tunnels, and plenums; and exterior exposed locations as follows: a Adjacent to all valves and flanges b Near each branch connection, excluding short takeoffs for fixtures and terminal units.

Where flow pattern is not obvious, mark each pipe at branch. c At both sides of wall or floor penetrations. d Before and after all wall, floor and ceiling penetrations and inaccessible enclosures. e Adjacent to changes in direction. f At access doors, manholes, and similar access points that permit view of concealed

piping. g Near major equipment items and other points of origination and termination. h Spaced at maximum intervals of 25 feet along each run. Reduce intervals in areas of

congested piping and equipment. i On piping above removable acoustical ceilings. Omit intermediately spaced labels.

2. All piping shall be identified.

C. Pipe Label Color Schedule: (per ANSI A13.1 / ASME A13.1-2007)

a Potable, Cooling, Boiler Feed and other Water Piping:

1) Background Color: Green.

2) Letter Color: White. b Fire Quenching Fluids:

1) Background Color: Red.

2) Letter Color: White.



c Combustible Fluids:

1) Background Color: Brown.

2) Letter Color: White d Toxic and Corrosive Fluids

1) Background Color: Orange.

2) Letter Color: Black e Flammable Fluids:

1) Background Color: Yellow.

2) Letter Color: Black.

D. Valves

1. For identification and Owner's maintenance records, all valves shall be numbered and identified with clearly stamped 1¼" diameter brass tags, in accordance with drawings and service performed.

2. Control valves shall be also marked whether normally open (N.O.) or normally closed (N.S.).

3. Affix Underwriter's standard porcelain enameled identification signs to all fire protection sprinkler control valves, drain valves, and flow switches.

3.6 NSTALLATION, HANGERS & SUPPORTS

A. Piping

1. Installation of piping shall be such that damage cannot result through loading, expansion or contraction of piping. Anchors shall be installed to obtain uniformity of pipe movement.

2. Pipe supports shall be spaced sufficiently close to support pipes properly without formation of pockets. Hangers shall be installed at ends of mains and branches. Maximum horizontal support spacing shall be as follows:

3. Provide resilient mounting for domestic water piping. Thermal insulation may serve as resilient mounting for insulated piping.

4. Suspended water piping shall be anchored with steel struts installed at midpoint of each run.

5. No valve or piece of equipment shall be used to support piping. 6. Pipes through studs or joists shall be isolated from structure with properly sized Hubbard

"Hold-Rite" suspension clamps. 7. Install hangers and supports complete with necessary attachments, inserts, bolts, rods,

nuts, washers, and other accessories. 8. Install hangers and supports to allow controlled thermal and seismic movement of piping

systems, to permit freedom of movement between pipe anchors, and to facilitate action of expansion joints, expansion loops, expansion bends, and similar units.

9. Install lateral bracing with pipe hangers and supports to prevent swaying. 10. Installation of piping shall be such that damage cannot result through loading, expansion or

contraction of piping. Anchors shall be installed to obtain uniformity of pipe movement. 11. Install building attachments within concrete slabs or attach to structural steel. Install

additional attachments at concentrated loads, including valves, flanges, and strainers, 2-½ inches and larger and at changes in direction of piping. Install concrete inserts before concrete is placed; fasten inserts to forms and install reinforcing bars through openings at top of inserts.

B. Metal Pipe-hanger Installation: Install hangers, supports, clamps, and attachments as required to properly support piping from the building structure.

C. Metal Trapeze Pipe-Hanger Installation: Support together and space trapezes for smallest pipe size or install intermediate supports for smaller diameter pipes as specified for individual pipe hangers.

D. Thermal-Hanger Shield Installation: Install in pipe hanger or shield for insulated piping.



E. Load Distribution: Install hangers and supports so that piping live and dead loads and stresses from movement will not be transmitted to connected equipment.

F. Pipe Slopes: Install hangers and supports to provide indicated pipe slopes and to not exceed maximum pipe deflections allowed by ASME B31.9 for building services piping.

G. Pipe Supports 1. Pipe supports shall be spaced sufficiently close to support pipes properly without formation

of pockets. Hangers shall be installed at ends of mains and branches and maximum intermediate spacing shall be as follows:

Nominal Diameter Pipe (inches)

Maximum Space Between Hangers (feet)

Minimum Recommended

Rod Diameter for Single Rigid Rod Hangers (inches)

Standard Steel Pipe

Copper Tube

Water Steam Water Copper Steel

1/2 7 8 5 3/8 3/8

3/4 7 9 5 3/8 3/8

1 7 9 5 3/8 3/8

11/4 7 9 7 3/8 3/8

11/2 9 12 8 3/8 3/8

2 10 13 8 3/8 3/8

21/2 11 14 9 ½ ½

3 12 15 10 ½ ½

31/2 13 16 11 ½ ½

4 14 17 12 1/2 5/8

2. Cast iron soil pipe spacing shall be 10 feet maximum; minimum of one hanger per pipe section close to the joint on the barrel, also at changes of direction and branch connections.

3.7 INSTALLATION, PIPING

A. Soil, Waste, Vent, Drain Piping: 1. Soil, waste, and vent piping occurring within the building shall be installed to a uniform

minimum grade of ¼" per foot unless otherwise noted. Vent piping shall be graded so that all condensation shall flow directly to a soil or waste line.

2. Exterior soil and waste lines shall be installed to inverts or grades indicated on the drawings.

3. Bell and Spigot pipe shall be installed with the bell up grade. 4. Changes in direction of drainage piping shall be accomplished by the use of appropriate

drainage and sanitary fittings. 5. Drilling and tapping of drains, soil, waste, or vent pipes and the use of saddle hubs and

bands are prohibited. 6. Protection against breakage of piping passing under or through walls shall be provided

using specified sleeves and caulking. 7. Adapters shall be installed between threaded iron and soil pipe. 8. Test tees shall be installed at the foot of all soil, waste, and storm water stacks. 9. Cleanouts shall be located where indicated on the Drawings; at all horizontal offsets; at

ends of waste or sewer branches more than 5' in length; at intervals of 100' in straight runs



of piping, or at closer intervals if directed or required by local code. Location of cleanouts in finished spaces shall be approved by the Engineer prior to installation.

B. Indirect Waste Piping: 1. Indirect waste piping shall be installed to a uniform minimum grade of ¼" per foot unless

otherwise noted. 2. Changes in direction of indirect waste piping shall be accomplished by the use of

appropriate drainage fittings. 3. Drilling and tapping of indirect waste pipes and the use of saddle hubs and bands are

prohibited. 4. Protection against breakage of piping passing under or through walls shall be provided

using specified sleeves and caulking.

C. Excavation, Backfill: 1. Provide all excavation, trenching, and backfill in connection with the work of this Section. 2. Excavation shall be carried to 4" below the bottom of pipes. Provide a sand bedding for all

sloped drainage piping, and provide smooth uniformly graded bedding of firm but yielding material for all other piping, catch basins, and similar structures.

3.8 CONNECTION, OWNER FURNISHED EQUIPMENT

A. All electrical wiring and connections for equipment furnished under this Section shall be furnished and installed under the Electrical Sections.

3.9 TESTING, INSPECTIONS

A. This Contractor shall not allow or cause any work of this Section to be covered or enclosed until it has been inspected, tested, and approved by the Engineer and the authorities having jurisdiction over the Work. Should any of this work be enclosed or covered up before such inspection, testing, and approval, this Contractor shall uncover the work, have the necessary inspections, tests, and approvals made and, at no expense to the Owner, make all repairs necessary to restore both his work and that of other contractors that may have been damaged, to be in conformity with the Contract Documents.

B. Contractor shall make all tests required by all local, state, and federal laws, codes, ordinances, and regulations having jurisdiction over this work. Furnish all necessary labor, materials, and equipment for conducting tests, and pay all expenses in connection therewith. Should leaks develop while testing, repairs shall be made, and tests shall be repeated until a satisfactory test result is obtained.

C. In any test, proper safety procedures and equipment should be used, including personal protective equipment such as protective eyewear and clothing. Installers should always consider local conditions, codes and regulations, manufacturer’s installation instructions, and Engineers’ specifications in any installation.

D. Tests: 1. Water Piping: Shall be hydrostatically tested for 6 hours at 150 psi. All equipment shall be

tested water tight at utility pressure. 2. Drainage and Vent Piping: Shall be tested for (1) hour by plugging all outlets and filling the

pipes with water to the top of vertical sections of pipes. No loss of water shall be permitted. 3. Condenser water piping shall be hydrostatically tested at 125-psi pressure and proved tight

before covering. Tests may be made in sections provided connection to service previously tested is included in each succeeding test. Systems shall be tight for eight hours.

3.10 CLEANING

A. Flush all water piping systems. Remove, clean and replace all strainer baskets prior to final inspection.



3.11 ADJUSTING

A. Properly adjust all stops, and controls, and demonstrate safe and satisfactory operation of all equipment.

3.12 CLEANUP

A. Upon completion of the work of this Section, remove all surplus material, debris, and equipment associated with or used in the performance of this work.

END OF SECTION

Central Utility Plant Chiller Addition Chabot-Las Positas Community College District

Costa Engineers SECTION 23 00 00 – HVAC Project No. 17035 Page 1

SECTION 23 00 00

HEATING, VENTILATING AND AIR CONDITIONING

GENERAL

1.1 SUMMARY

This Specification establishes the required standards for all labor, materials, equipment and workmanship in connection with the furnishing, fabrication and installation of complete “Heating, Ventilating, and Air Conditioning” systems. The HVAC work for this project includes, but is not necessarily limited to, the following:

New water-cooled centrifugal liquid chiller; New open circuit, mechanical induced-draft cooling tower. Base mounted pumps; Hydronic heating piping and appurtenances; Hangers and supports; Valves for HVAC piping; HVAC insulation; Identification of HVAC piping and equipment; Start-up, testing, adjusting and balancing (See Section 23 0793)

1.2 SUBMITTALS

General

Before any fixtures, materials, or equipment are purchased, the Contractor shall submit to the Engineer for approval, a complete list of materials, fixtures, and equipment, giving the manufacturers' names, catalog number, capacity, size, power requirements, and other pertinent data. Submittal lists and drawings shall be specifically applicable to this project, shall include identifying marks assigned by Specifications and Drawings, and shall not contain extraneous material or optional choices.

Contractor shall make all necessary field measurements and investigations to assure that the equipment and assemblies will meet contract requirements. Review of drawings and other material submitted shall not be construed as a complete check or constitute a waiver of the requirements of the Drawings and Specifications, but will indicate that the material submitted is acceptable in quality and utility. This review shall not relieve the Contractor of the responsibility to fit the proposed materials to the spaces provided, and to effect necessary rearrangement or construction of other work.

Product Data:

For each type of product indicated, include manufacturer’s specifications, data sheets, and certified drawings on major equipment. Include physical and performance data such as weights, sizes, capacities, required clearances, performance curves, acoustical characteristics, finishes, color selection, and accessories.

Coordination/Layout Shop Drawings

The Contractor shall submit for the approval of the Engineer, shop drawings of proposed material and equipment that differ from the specified materials and equipment, and of any specified materials and equipment with special conditions and/or arrangements. These drawings shall show necessary modifications of Owner, plumbing, electrical and mechanical work required by the proposed materials and equipment.

Prepare complete consolidated and coordinated layout drawings for all new systems, and for existing systems that are in the same areas. Shop drawings shall be prepared using AutoCAD 2012 or newer and shall be drawn at a minimum ¼” = 1’ - 0” scale.

All drawings shall be fully coordinated with HVAC, Plumbing, Fire Protection, Electrical, Structural, and Architectural work. Drawings shall be coordinated and dimensioned



indicating equipment, pipe, duct, fire protection, and electrical in relation to architectural and structural features. Indicate exact locations of valves, piping specialties, access doors, etc.

Clearly identify and dimension the proposed locations of the principal items of equipment and adequate clearance for all equipment, piping, pumps, valves and other items. Provide detailed layout of all piping systems showing the proposed routes.

Show the access means for all items requiring access for operations and maintenance. Submit shop drawings to Engineer for approval, prior to fabrication or installation of any

work. Do not install equipment or piping until layout drawings have been approved. Any work installed without prior shop drawing approval shall be removed at the Contractor’s expense.

As-Built Drawings

A complete set of Contract Drawings shall be maintained at the work site, and all changes in the work shall be recorded on this set on a daily basis. In addition to changes made during course of work, show following:

a. Exact location, type and function of concealed valves and controllers. b. Exact size, elevations and location of underground and under floor piping.

Submit to Engineer for final approval.

Operation & Maintenance Data (Closeout)

Installing contractor shall provide all operating and maintenance instructions provided by the manufacturer, describing proper operation and maintenance of any equipment and devices installed. Operating and maintenance instructions shall cover maintenance, adjustment, and operation of each piece of apparatus.

Contractor shall also provide a parts list of all equipment and component parts for all equipment under this Section. The equipment list shall include manufacturer’s name, model number, and local representative, service facilities and normal channel of supply for each item.

Data shall be bound in a hard cover 3-ring binder, with table of contents identifying items therein, and index tabs for each system. Neatly obscure or cross out inapplicable data from manufacturer's literature. Include the following:

a. Manufacturer’s brochures, ratings, certified shop drawings, lubrication charts and data, and parts list with part numbers. Mark each sheet with equipment identification number and actual installed condition or system and location of installation. Specifically identify which options are provided.

b. Description of start-up and operating procedures for each system, including controls diagrams and description of operating sequences.

c. Recommend preventative maintenance schedule and procedures.

Submit data to the Engineer for approval. Final acceptance of the work will not be made until a satisfactory submission of this material is received and approved by the Engineer.

1.3 OPERATING & MAINTENANCE INSTRUCTIONS

The Owner's authorized representative shall be instructed in the operation and servicing of all heating, ventilating, and air conditioning systems. Provide a minimum of one man-day of instruction time. All instruction shall be provided at no cost to the Owner.

The Owner's authorized representative shall be instructed in the operation and servicing of all heating, ventilating, and air conditioning systems. Provide a minimum of one man-day of instruction time. All instruction shall be provided at no cost to the Owner.

Final acceptance of the work will not be made until a satisfactory submission of this material is received and approved by the Engineer.



1.4 WARRANTIES

Equipment warranties shall be provided for all equipment, with all necessary information filled in, except purchase date, in favor of the Owner.

1.5 DELIVERY, STORAGE, AND HANDLING

Contractor shall be responsible for delivery, storage, protection and placing of all equipment and materials.

Contractor shall protect the work and materials from damage during construction. Equipment stored at the jobsite shall be protected from dust, water or other damage, and be covered if equipment is exposed to weather. Protect interiors of new equipment and piping systems against entry of foreign matter. Clean both inside and outside before painting or placing equipment in operation. Any items damaged shall be repaired or replaced, at no additional cost to the Owner.

Cleanliness of Piping and Equipment Systems:

Exercise care in storage and handling of equipment and piping material to be incorporated in the work. Remove debris arising from cutting, threading and welding of piping.

Piping systems shall be flushed, blown or pigged as necessary to deliver clean systems. Contractor shall be fully responsible for all costs, damage, and delay arising from failure to

provide clean systems.

1.6 COOPERATION WITH OTHER TRADES:

Cooperate fully with other trades doing work on the project as may be necessary for the proper completion of the project. Refer to the Structural, Plumbing, and Electrical Drawings for details of the building structure and equipment installation that will tend to overlap, conflict with, or require coordination with the work of this Section, and schedule this work accordingly.

Priority of right of way in space shall be as follows, in decreasing order of authority:

Electrical lights, electrical panels and drain piping. Ductwork. Fire protection piping, domestic hot water, domestic cold water and condenser water

piping.

Any work done without regard for other trades shall be moved, replaced, or redone as required, without extra charges to Owner.

1.7 VERIFICATION OF EXISTING CONDITIONS AND DEMOLITION

The data given herein and on the Drawings is as exact as could be reasonably secured, but absolute accuracy is not guaranteed. Exact locations, distances, elevations, etc. will be governed by shop drawings, the building itself, and actual field conditions.

Before installation of any new work, verify the location, size and other conditions at all points of connection to services or other existing piping, and at all locations where new work will cross or pass near existing piping, electrical, or other facilities.

Information shown relative to existing services is based upon available records and data during preparation of the Drawings, but shall be verified. Make reasonable deviations found necessary to conform with actual locations and conditions, at no additional charge.

Remove piping, controls, fixtures, and equipment that is not to remain in service as shown on the Drawings or as required. This includes the removal of associated appurtenances and supports.

Patch, cap, or repair existing works affected by this demolition in concealed spaces within 6" of a live main or branch.

Deliver removed material to the Owner, as directed by the Engineer. Dispose of all other removed material offsite.



1.8 DAMAGE BY LEAKS

Contractor shall be responsible for any damage to work of other Contractors that is caused by leaks in any temporary or permanent piping systems due to pipe rupture, disconnected pipes or fittings, or by overflow of equipment.

PRODUCTS

2.1 GENERAL

Provide fan drives rated at 150% of motor horsepower. Drives shall be adjustable sheave type unless specified otherwise. Listed fan speeds are only approximate; select and/or change drives to operate at approximately midpoint of adjustable range after final balancing.

Provide guards to enclose exposed moving equipment components in accordance with California Department of Industrial Relations, CAL/OSHA Title 8 regulations. Fabricate belt guards with rigid angle iron frame, expanded metal screen, pivoted 4" diameter tachometer opening covers, and in two pieces to permit lubrication or sheave and belt adjustment without removing guard. Provide removable sheet metal guards at shafts and couplings and removable framed wire mesh guards at openings in mechanical systems.

2.2 PRODUCTS CRITERIA

All materials, appliances, and equipment shall be new and best of their respective kinds, free from defects, and of the make, brand or quality specified or as accepted by the Engineer.

Multiple Units: When two or more units of materials or equipment of the same type or class are required, these units shall be products of one manufacturer.

Apply and install all items in accordance with the manufacturer’s written instructions. Refer conflicts between the manufacturer’s instructions and the Drawings and Specifications to the Engineer for resolution.

All fixtures, materials, and equipment equal in quality and utility to these herein mentioned will be accepted. When specific names are used in describing fixtures, materials, and equipment they are mentioned as standards only, but this implies no right on the part of the Contractor to use other fixtures, materials and equipment, or methods, unless approved as equal in quality and utility by the Engineer. The decision of the Engineer shall govern as to what fixtures, materials, and equipment are equals to those mentioned, but the burden of proof as to the quality of any proposed fixtures, materials, or equipment shall be upon the Contractor. If any tests are necessary to determine the quality of proposed fixtures, materials, or equipment, an unbiased laboratory shall make such tests at the expense of the Contractor satisfactory to the Engineer.

2.3 PRESSURE PIPING (CHILLED WATER):

Pressure piping shall conform to the requirements of ANSI Safety Code for Pressure Piping, B31.1. Piping shall be commercially round and straight, be of uniform quality and workmanship, and free from all defects. All pressure piping shall be identified.

Pressure ratings herein are steam, unless specifically designated as “WOG” or “WWP”.

Copper tubing shall be drawn (hard) temper. ASTM B 88, Type L, unless otherwise specified. Mueller Industries or equal.

Fittings shall be wrought copper solder joint, ASME B16.22. Anvil, Victaulic, or Nibco. Fittings sizes not available in wrought copper shall be:

a. 2” and smaller: Cast bronze, threaded, ground joint unions b. 2½ “ and larger: Cast bronze, flanged unions, 150 psi class.



Viega pressure seal fittings and couplings are an acceptable proprietary joining method. Contractor must be specially trained and use tools required by manufacturer for this joining method.

Black steel, threaded: ASME B36.20, Schedule 40, with malleable iron fittings, ASME B16.3, 150 psi class.

2" and smaller shall be threaded.

Black steel, welded and seamless: ASTM A 53, Schedule 40, with steel welding-neck flanges and flanged fittings, ASME B16.9; 150 psi class.

2½" and larger shall be welded.

2.4 PREINSULATED PIPE

All underground chilled water lines with fluid temperatures up to 250°F shall be Perma-Pipe "POLY-THERM" type or approved equal. All straight sections, fittings, anchors and other accessories shall be factory fabricated to job dimensions. Each system layout shall be computer analyzed by the piping system manufacturer to determine stress on the carrier pipe and anticipated thermal movement of the service pipe. The system design shall be in strict conformance with ANSI B31.1, latest edition. Factory trained field technical assistance shall be provided for critical periods of installation such as unloading, field joint instruction and testing

Service Pipe

Internal piping shall be standard weight carbon steel, except for condensate return lines which shall be Schedule 80. All joints shall be butt-welded for 2½ inches and greater, and socket or butt-welded for 2 inches and below. Where possible, straight sections shall be supplied in 40-foot random lengths with piping exposed at each end for field joint fabrication.

Accessories

End seals, gland seals and anchors shall be designed and factory fabricated to prevent the ingress of moisture into the system.

Insulation

Service pipe insulation shall be spray applied 0.16 k-factor, and minimum 2lb/ft3 density, polyurethane foam for straight sections and preformed polyurethane foam for all fittings. All polyurethane foam insulation shall be minimum 90% closed cell. Open cell foams shall not be allowed. To ensure no voids are present, all insulation shall be inspected by one of the following methods: visually checked prior to application of the protective jacket or infrared inspection of the entire length, twenty-four hours after foaming is complete. The insulation shall be applied to the minimum thickness of 1 inch.

Protective Jacket

All straight sections of the insulated piping system shall be filament wound, fiberglass reinforced polymer (FRP) directly applied on the insulating foam. Thermoplastic casing material such as PVC or HDPE shall not be allowed.

The minimum thickness for FRP jacket shall be 0.100 inch. All fittings of the insulated piping system shall be prefabricated to minimize field joints and

jacketed in a chopped spray-up, polymer (FRP), directly applied onto the insulating foam to a thickness related to the filament-wound jacket thickness.

Field Joints

The internal pipe shall be hydrostatically tested to 150 psig or 1½ times the operating pressure, whichever is greater. Insulation shall then be poured in place into the field weld area. All field applied insulation shall be placed only in straight sections. Field insulation of fittings shall not be acceptable. The installer shall seal the field joint area with a heat



shrinkable adhesive backed wrap or with wrappings of glass reinforcement fully saturated with a catalyzed resin identical in properties to the factory-applied resin. Backfilling shall not begin until the heat shrink wrap has cooled or until the FRP lay-up has cured. All insulation and coating materials for making the field joint shall be furnished by the piping system manufacture.

Backfill

A 4-inch layer of sand or fine gravel shall be placed and tamped in the trench to provide uniform bedding for the pipe. The entire trench width shall be evenly backfilled with a similar material as the bedding in 6-inch compacted layers to a minimum height of 6 inches above the top of the insulated piping system. The remaining trench shall be evenly and continuously backfilled in uniform layers with suitable excavated soil.

2.5 UNIONS

Steel Pipe: malleable iron, 150 lb., ground joint, Anvil figure 463, Kuhns, or equal.

Copper Pipe: soldered joint, Nibco series 633 or 733, Mueller, or equal.

Dielectric: Epco, Watts, or equal.

2.6 STRAINERS

For pipes 1 ½” – 2”: Nibco T/S 221/222-A Wilkins S or YB series strainer, 20 mesh type 304 stainless steel screen, bronze construction, 200 psi, or approved equal. Provide with hose bibb drain.

For pipes 2 ½” & larger: Nibco F-721A, Wilkins F series, flanged, 125 lb., tapped bolted bonnet with plug and stainless steel screen.

For pipes 4” & larger: Wilkins F series. 125 lb., perforated metal screen, flanged.

2.7 PRESSURE GAUGES

Pressure gauges shall be Trerice No. 600CB or equivalent Marsh or approved equal.

Pressure gauges shall be of the 4 ½”dial size with flangeless cast aluminum case, stainless steel friction ring and glass window. Movement shall be brass with a bourdon tube and brass socket. Dial face shall be white with black graduations and markings. Pointer shall be friction adjustable type. Accuracy shall be + 1% of scale range, ASME B40.100 Grade 1A.

Range of gauges shall be not more than the operating range x 1.5. The proper range will be selected so that the average operating pressure falls approximately in the middle of the scale selected.

A gauge cock shall be supplied at each gauge connection.

Gauges on any service where pressure surges or pulsations are possible shall be provided with pressure snubbers

2.8 PRESSURE AND TEMPERATURE TEST STATIONS

Supply and install where required “Pete’s Plug II” a ¼" fitting to receive either a temperature or pressure probe ⅛" O.D. Fittings shall be solid brass with two valve cores of Nordel (Max 275°F) at 500 psi, fitted with a color-coded cap strap with gasket, and shall be rated at 1000 PSI at 140°F.

Additionally, the contractor shall supply to the owner upon completion of testing, a pressure and temperature test kit. It shall consist of 0-100 psi (700kPa) pressure gauge with a number 500 gauge adaptor attached. It shall contain one 25-125°F and one 0-220°F dial pocket testing thermometer. Also included shall be an extra number 500 gauge adaptor and protective carrying case with foam inserts.



2.9 THERMOMETERS

Weksler, Weiss, or approved equal. Adjustable with separable sockets and 6” minimum scale

reading of 30-240F. The proper range shall be selected so that the operating temperature of the material being measured will fall approximately in the middle of the scale.

Thermometer for pipeline or tank mounting shall have (brass or stainless steel) separable well. Thermometers installed on tanks shall have 6” minimum stem length.

Where insulation exceeds 2”, a longer stem shall be used with an extension neck separable well.

Thermometers for measuring fluid temperatures shall have stems with insertion length roughly half of the pipe diameter; minimum insertion length shall be 2”.

For applications where the process media may be corrosive or contained under pressure, the use of a thermowell is required to prevent damage to the thermometer and facilitate its removal from the process.

2.10 HANGERS AND SUPPORTS

Pipe supports shall be Superstrut or equivalent Cooper B-Line, Nibco (Tolco), or Anvil International.

All hangers shall be electro-chromate finished. Hanger rods shall have electro-galvanized finish.

Copper tubing:

C-711 copper tube hanger complete with C-716 isolator. Copper pipe shall be attached to channels with A-716 “Cush-A-Clamp”.

Insulated pipe:

C-711 pipe hanger fitted to outside of insulation with C-790 galvanized shields.

Trapeze hangers:

Grouped pipes may be supported by A-1200 channel bolted to rods.

Point of support connectors:

Wood construction: a. Stationary pipes: 540 side beam hangers b. Pipes subject to movement: S541

New concrete construction: 452 inserts. Existing concrete construction: Phillips “Red-Head” 3-piece concrete anchors or Hilti “Quik-

Bolt”, drilled-in, concrete anchors. Steel beams: Series 500 beam brackets. Plywood decks: machine bolts, nuts and washers.

Vertical pipe risers:

Vertical pipe risers shall be securely supported with C-720 pipe clamps anchored to construction. a. C-720P for bare cold water pipe, anchored to construction.

Pipes through studs or joists shall be isolated from structure with properly sized Hubbard "Hold-Rite" suspension clamps or LSP “Acousto-Plumb” system.

2.11 PIPE LABELS

Brady, Seton or approved equal pipe labels. Preprinted, color-coded, with lettering indicating service, and showing flow direction.

Self-Adhesive Pipe Labels: Printed plastic with contact-type, permanent-adhesive backing.



Pipe Label Contents: Include identification of piping service using same designations or abbreviations as used on Drawings, pipe size, and an arrow indicating flow direction.

Flow-Direction Arrows: Integral with piping system service lettering to accommodate both directions, or as separate unit on each pipe label to indicate flow direction.

Label Sizes (per ANSI A13.1 / ASME A13.1-2007 Standards):

For pipes or covering with outside diameter ¾ to 1¼ inch, minimum length of label: 8 inches, minimum height of letters: ½ inch.

For pipes or covering with outside diameter 1½ to 2 inches, minimum length of label: 8 inches, minimum height of letters: ¾ inch.

For pipes or covering with outside diameter 2½ to 6 inches, minimum length of label: 12 inches, minimum height of letters: 1¼ inch.

2.12 CHILLER

Trane CVHF series, centrifugal, hermetic water chiller as scheduled on the Drawings, or approved equal. The chiller shall use R-123 refrigerant, supplied by the manufacturer. The chiller shall be UL listed.

Compressor-Motor

Direct drive multiple-stage compressor, multi-stage capacity control guide vanes, and shrouded aluminum alloy impellers dynamically balanced. Motor-compressor assembly shall be balanced to .15 in./sec (.0038m/sec) maximum vibration measured on motor and bearing housings. The motor shall be refrigerant cooled, hermetically sealed, two-pole, squirrel cage induction type. Two pressure lubricated bearings shall support the rotating assembly.

A direct drive submerged oil pump motor, 3/4 hp (.560 kW) 115V/50/60/1 shall provide filtered and temperature controlled oil to compressor bearings.

Motor cooling shall be accomplished by a refrigerant pump that supplies liquid refrigerant to the motor. All motor windings shall be specifically insulated for operation within a refrigerant atmosphere.

Evaporator-Condenser

Shells shall be carbon steel plate. Evaporator shall include rupture disk per BSR/ASHRAE 15 Safety Code. Carbon steel tube sheets shall be drilled, reamed and grooved to accommodate tubes. Tubes shall be individually replaceable, externally finned seamless copper. Tubes shall be mechanically expanded into tube sheets.

Eliminators shall be installed over entire length of the evaporator tube bundle. A multiple orifice control system shall maintain proper refrigerant flow. Condenser baffle shall prevent direct impingement of compressor discharge gas upon the tubes.

Refrigerant side of the assembled unit shall be tested at both pressure (30.00 psi leak test) and vacuum. Water side shall be hydrostatically tested at 1 1/2 times design working pressure, but not less than 225.00 psi.

Water Boxes

Drains and vents - Water boxes shall have 3/4-inch NPTI vents and drain connections provided. Evaporators shall have 2 vents and 2 drains, condensers shall have 1 vent and 1 drain. Non-marine water boxes shall have water connections that extend out from the end.

Economizer

A single stage economizer shall be constructed in accordance with ASME Section VIII, Division I and consist of either one or two interstage pressure chambers which utilize a multiple orifice system to maintain the correct pressure differential between the condenser, economizer, and evaporator over the entire range of loading. The system shall contain no moving parts.



Purge System

The purge shall include a 1/4 hp 115V/60/1, 100V/50/1 air cooled condensing unit, purge tank, drier elements, a 1/20 hp (.037 kW) 115V/60/1, 110V/50/1 pump-out compressor, a carbon tank, and a heater. The purge shall be designed with an activated carbon filtration system that includes an auto-regeneration feature. The purge shall be rated in accordance with AHRI Standard 580.

The purge controller shall communicate with the '"Tracer AdaptiView™" controller and display, which is mounted on the front of the chiller control panel. Descriptive text shall indicate purge operating mode, status, set points, purge operating data reports, diagnostics, and alarms. Operating modes Stop, On, Auto, and Adaptive shall operate the purge refrigeration circuit and accumulate non-condensables with or without the chiller running.

TRANE Adaptive Frequency Drive (AFD), AdaptiView Control Panel:

The chiller shall have a "Tracer(tm) AdaptiView" microprocessor-based chiller control system that provides complete stand-alone control and monitoring. The Trane AFD shall be a closed-loop, liquid refrigerant cooled, pulsed width modulation design. It shall be a factory-mounted package, with controls to operate the chiller, including oil management, purge operation, interface to the starter, and comprehensive motor protection, including three-phase solid state motor overload. Inlet and outlet water (fluid) temperature sensors shall be located in the evaporator and condenser waterbox connections.

The display shall be a touch-sensitive 12 1/8" diagonal color liquid crystal display (LCD) that uses color graphics and animation. The touch sensitive interface shall allow the operator to view the chiller graphically and receive a status indication via subsystem animations. The operator shall be able to navigate easily between the primary chiller subsystems including: compressor, evaporator, condenser, and motor. For each subsystem, status, and detailed operating parameters shall be able to be viewed. In addition, alarms, reports, trending, and settings shall be accessible from the main screen. The display shall be mounted on a flexible "arm" that allows extensive height and viewing angle variations. For remote starters - Class 1 control panel voltage (30-115 V) shall be clearly labeled in the control panel. Class 2 input voltage (30V max) shall also be labeled in the control panel.

Operating Data shall include: a. operating hours b. number of starts c. chilled water setpoint d. evaporator and condenser water flow status e. evaporator entering and leaving water temperatures f. evaporator saturated refrigerant temperatures g. evaporator approach temperature h. evaporator refrigerant pressure i. condenser entering and leaving water temperatures j. condenser saturated refrigerant temperatures k. condenser approach temperature l. condenser refrigerant pressure m. oil differential pressure n. oil tank temperature o. purge mode p. purge average daily pump-out time q. % RLA per phase for motor r. RLA per phase s. volts per phase t. power factor u. kw v. kwh



w. frequency The AdaptiView shall also contain the following dedicated reports: Evaporator, Condenser,

Compressor, Motor, Purge, and ASHRAE. Each report shall be comprised of a detailed listing of operational data relative to that chiller subsystem.

Control functions shall include: a. leaving chilled water temperature b. percent demand limit c. chiller water reset (based on return water temperature d. front panel control type e. setpoint source f. differential to start g. differential to stop

Status data shall include: a. waiting to start b. running c. run limit d. run inhibit (adaptive) e. auto f. free cooling (option) g. preparing to shutdown h. shutting down (post lube) i. stopped

Safeties shall include automatic safety shutdown for: a. low chilled water temperature, b. low evaporator refrigerant temperature c. high condenser refrigerant pressure d. evaporator and condenser flow status e. low evaporator/condenser differential refrigerant pressure f. low oil pressure g. oil pressure overdue h. high or low oil temperature i. high bearing oil temperature (requires enhanced protection option) j. high motor current k. high motor temperature l. starter function faults m. critical temperature and pressure sensor faults

The devices shall be of a latching trip out type requiring manual reset. Non-latching safety trip outs for operating conditions.

Condenser Proof of Flow - Thermal Dispersion

A factory provided, field installed thermal dispersion type proof of flow switch (IFM) shall be provided. The thermal dispersion controller shall be mounted in the chiller control panel. The piping probe and wiring shall be field installed.

Paint:

The chiller's painted surfaces shall be coated with shall be coated with a beige epoxy single coat that is baked to finish.

Isolation

Neoprene isolation pads shall be supplied with each chiller for placement under all support points. Enough pads shall be provided to cover the area under the chiller supports.

Insulation

Insulation shall be factory applied. All low temperature surfaces shall be covered with 3/4" Armaflex ll or equal (thermal conductivity=0.28 BTU/hr-ft sq.) (1.59 W/m2-K), including the



evaporator, water boxes and suction elbow. The economizer shall be insulated with 3/8" insulation. The chiller feet are not insulated.

Accessories

Refer to equipment schedule remarks for any options and accessories to be provided.

Shipment

All units shall be of hermetic design, leak tested, charged to 5.00 psi and shipped as a single factory-assembled package.

A full oil charge shall be shipped in oil sump. Refrigerant shall be shipped to jobsite from refrigerant manufacturer.

The entire chiller shall be shrink-wrapped for protection.

Leak-Tight Warranty

The chiller shall have a 5-year limited Leak-Tight Warranty, valid for the lesser of 60 months from initial start-up or 66 months from date of shipment.

2.13 COOLING TOWER

Evapco "AT" series cooling tower, as scheduled on the Drawings or approved equal.

Quality Assurance

Verification of Performance: a. The thermal performance shall be certified by the Cooling Technology Institute in

accordance with CTI Certification Standard STD-201. Lacking such certification, a field acceptance test shall be conducted within the warranty period in accordance with CTI Acceptance Test Code ATC-105, by a Certified CTI Thermal Testing Agency. The Evaporative Heat Rejection Equipment shall comply with the energy efficiency requirements of ASHRAE Standard 90.1.

b. Unit Sound Performance ratings shall be tested according to CTI ATC-128 standard. Sound ratings shall not exceed specified ratings.

c. Unit shall meet or exceed energy efficiency per ASHRAE 90.1

Warranty

Fan Motor/Drive System: Warranty Period shall be 5 years from date of unit shipment from Factory (fan motor(s), fan(s), bearings, mechanical support, sheaves, bushings and belt(s)).

The Entire Unit shall have a comprehensive 1 year warranty against defects in materials and workmanship from startup, not to exceed eighteen (18) months from shipment of the unit.

Description:

Factory assembled and tested, induced draft counter flow cooling tower complete with fan, fill, louvers, accessories and rigging supports

Materials of Construction

All cold water basin components including vertical supports, air inlet louver frames and panels up to rigging seam shall be constructed of heavy gauge mill hot-dip galvanized steel.

Upper Casing, channels and angle supports shall be constructed of heavy gauge mill hot-dip galvanized steel. Fan cowl and guard shall be constructed of galvanized steel. All galvanized steel shall be coated with a minimum of 2.35 ounces of zinc per square foot of area (G-235 Hot-Dip Galvanized Steel designation). During fabrication, all galvanized steel panel edges shall be coated with a 95% pure zinc-rich compound.

Fan(s):



Fan(s) shall be high efficiency axial propeller type, using a high strength die cast aluminum hub and fiberglass reinforced polypropylene (PPG) wide chord blades. Each fan shall be statically balanced and installed in a closely fitted cowl with venturi air inlet.

Drift Eliminators

Drift eliminators shall be constructed entirely of Polyvinyl Chloride (PVC). Design shall incorporate 3 changes in air direction and limit the water carryover to a maximum of 0.001% of the recirculating water rate.

Water Distribution System

Spray nozzles shall be precision molded ABS, large orifice nozzles utilizing fluidic technology. Spray header and branches shall be Schedule 40 Polyvinyl Chloride (PVC) with a steel connection to attach external piping.

Heat Transfer Media

Fill media shall be constructed of Polyvinyl Chloride (PVC) of cross-fluted design and suitable for inlet water temperatures up to 130° F. The bonded block fill shall be bottom supported and suitable as an internal working platform. Fill shall be self-extinguishing, have a flame spread of 5 under A.S.T.M. designation E-84-81a, and shall be resistant to rot, decay and biological attack.

Air Inlet Louvers

The air inlet louver screens shall be constructed from UV inhibited polyvinyl chloride (PVC) and incorporate a framed interlocking design that allows for easy removal of louver screens for access to the entire basin area for maintenance. The louver screens shall have a minimum of two changes in air direction and shall be of a non-planar design to prevent splash-out and block direct sunlight & debris from entering the basin.

Make up Float Valve Assembly

Make up float assembly shall be a mechanical brass valve with an adjustable plastic float.

Pan Strainer

Pan Strainer(s) shall be all Type 304 Stainless Steel construction with large area removable perforated screens.

Motors and Drives

Fan motor(s) shall be totally enclosed, ball bearing type electric motor(s) suitable for moist air service. Motor(s) shall be Premium Efficient, Class F insulated, 1.15 service factor design, inverter rated per NEMA MG1 Part 31.4.4.2 and suitable for variable torque applications and constant torque speed range with properly sized and adjusted variable frequency drives.

The fan drive shall be multigroove, solid back V-belt type with QD tapered bushings designed for 150% of the motor nameplate power. The belt material shall be neoprene reinforced with polyester cord and specifically designed for evaporative equipment service. Fan sheave shall be aluminum alloy construction. Belt adjustment shall be accomplished from the exterior of the unit.

Fan shaft shall be solid, ground and polished steel. Exposed surface shall be coated with rust preventative.

Fan shaft bearings shall be heavy-duty, self-aligning ball type bearings with extended lubrication lines to grease fittings located on access door frame. Bearings shall be designed for a minimum L-10 life of 100,000 hours.

Maintenance Access

Fan Section



a. Circular access door shall be located in the fan section for fan drive and water distribution system access. Swing away motor cover shall be hinged for motor access.

Basin Section a. Framed removable louver panels shall be on 2 sides of the unit for pan and sump

access.

Options/Accessories

See equipment schedule remarks for options/accessories to be provided.

2.14 PUMPS

Armstrong Series 4030 base mounted centrifugal pumps as scheduled on the Drawings or approved equal.

The pump shall be single, end suction type with radially split, top center-line discharge, self-venting casing. The casing-to-cover gasket shall be confined on the atmospheric side to prevent blow-out possibility.

Pump construction shall be cast iron, bronze fitted (all iron, all bronze, ductile iron) and shall be fitted with a long-life, product lubricated, drip-tight mechanical seal, with O-ring seat retainer, designed for the specified maximum temperature and pressure.

The shaft shall be fitted with a Stainless Steel shaft sleeve and be supported by two heavy duty ball bearings. The design shall allow Back Pull Out servicing, enabling the complete rotating assembly to be removed without disturbing the casing piping connections.

The pump shall be mounted on a rigid, single piece baseplate, with grouting hole, and connected by flexible coupling, with guard, to an energy efficient type motor, eligible for PG& E rebate.

The housing shall be hydrostatically tested to 150% maximum working pressure.

2.15 VARIABLE FREQUENCY DRIVE

ABB "ACH 550" series Variable Frequency Drive (VFD) consisting of a pulse width modulated (PWM) inverter designed for use with a standard NEMA Design B induction motor.

Qualifications:

VFDs and options shall be UL508 listed as a complete assembly. The base VFD shall be UL labeled 100 kA RMS Symmetrical, 600V max.

CE Mark – The base VFD shall meet product standard EN 61800-3 for the First Environment restricted level (Category C2). (RFI / EMI Filter spec).

The entire VFD assembly, including the bypass (if specified), shall be seismically certified and labeled as such in accordance with the 2012 International Building Code (IBC): a. VFD manufacturer shall provide Seismic Certification and Installation requirements at

time of submittal. b. Seismic importance factor of 1.5 rating is required, and shall be based upon actual

shake test data as defined by ICC AC-156. c. Seismic ratings based upon calculations alone are not acceptable. Certification of

Seismic rating must be based on testing done in all three axis of motion by a certified lab.

d. Special seismic certification of equipment and components shall be provided by OSHPD preapproval.

Submittals

Submittals shall include the following information: a. Outline dimensions, conduit entry locations and weight. b. Customer connection and power wiring diagrams. c. Complete technical product description including a complete list of options provided.



Building Information Modeling

BIM objects shall contain IFC parameters and associated data applicable to building system requirements. These elements shall support the analytic process including size, clearance, location, mounting heights, and system information where applicable.

The VFD package as specified herein shall be enclosed in a UL Type enclosure (enclosures with only NEMA ratings are not acceptable).

Environmental operating conditions: 5 to 104° F continuous. Altitude 0 to 3300 feet above sea level, less than 95%, non-condensing All circuit boards shall be coated to protect against corrosion.

All VFDs shall have the following standard features. a. All VFDs shall have the same customer interface, including digital display, and

keypad, regardless of horsepower rating. The keypad shall be removable, capable of remote mounting and allow for uploading and downloading of parameter settings as an aid for start-up of multiple VFDs.

b. The keypad shall include Hand-Off-Auto selections and manual speed control. There shall be fault reset and “Help” buttons on the keypad. The Help button shall include “on-line” assistance for programming and troubleshooting.

c. VFDs through 200 HP shall have internal chokes (reactors) providing 5% impedance to reduce the harmonics to the power line and to add protection from AC line transients.

d. The input current rating of the VFD shall not be greater than the output current rating. VFD’s with higher input current ratings require the upstream wiring, protection devices, and source transformers to be oversized per NEC 430.122

e. The VFD shall provide a programmable loss-of-load (broken belt / broken coupling) Form-C relay output. The drive shall be programmable to signal the loss-of-load condition via a keypad warning, Form-C relay output, and / or over the serial communications bus.

All VFDs to have the following adjustments: a. Run permissive circuit - There shall be a run permissive circuit for damper or valve

control. Regardless of the source of a run command (keypad, input contact closure, time-clock control, or serial communications), the VFD shall provide a dry contact closure that will signal the damper to open (VFD motor does not operate). When the damper is fully open, a normally open dry contact (end-switch) shall close. The closed end-switch is wired to a VFD digital input and allows VFD motor operation. Two separate safety interlock inputs shall be provided. When either safety is opened, the motor shall be commanded to coast to stop and the damper shall be commanded to close.

b. The VFD control shall include a programmable time delay for VFD start and a keypad indication that this time delay is active. A Form C relay output provides a contact closure to signal the VAV boxes open. This will allow VAV boxes to be driven open before the motor operates

c. The VFD shall include a fireman’s override input. The mode shall override all other inputs (analog/digital, serial communication, and all keypad commands), except customer defined safety run interlocks, and force the motor to run at a preset speed or in a separate PID mode.

Serial Communications a. The VFD shall have an EIA-485 port as standard. The standard protocols shall be

Modbus, Johnson Controls N2, Siemens Building Technologies FLN, and BACnet. The use of third party gateways and multiplexers is not acceptable. All protocols shall be “certified” by the governing authority (i.e. BTL Listing for BACnet).

EMI / RFI filters. All VFD’s shall include EMI/RFI filters. The onboard filters shall allow the VFD assembly to be CE Marked and the VFD shall meet product standard EN 61800-3 for the First Environment restricted level (Category C2).



Drive Options – Options shall be furnished and mounted by the drive manufacturer. All optional features shall be UL Listed by the drive manufacturer as a complete assembly and carry a UL508 label.

Warranty

The VFD Product Warranty shall be 36 months from the date of factory shipment. The warranty shall include all parts, labor, travel time and expenses. A toll free 24/365 technical support line shall be available.

2.16 SUCTION DIFFUSERS

Armstrong suction guide SG-66 where shown on Drawings or approved equal. Install on the suction of each pump an Armstrong Suction Guide, with Outlet Flow Stabilizing Guide Vanes, removable Stainless Steel Strainer and Fine Mesh Start-up Strainer.

Supply Suction Guide with Cast Iron body with ANSI 125 flanged ports.

The mechanical contractor shall inspect the strainer prior to activating the pump and, further, shall remove the Fine Mesh Start-up Strainer after a short running period. (24 hours maximum). Space shall be provided for removal of the Strainer and connection of a Blow-down Valve.

2.17 FLEXIBLE CONNECTORS

Pipe: Bronze, double braided, sweat solder ends, Metraflex BBS series, equivalent Keflex, or approved equal.

Pumps: Discharge side flexible connectors shall be Metraflex, "Vane Flex” or approved equal.

Install flexible connectors at all discharge pump connections to relieve pump and piping stresses. Flexible hose section to be 304 stainless steel, close pitch, annular corrugated hose with a type 304 braided outer covering. End connections to be ANSI class 150 carbon steel plate flanges.

Connectors at the discharge side of pumps shall incorporate internal flow straightening vanes to reduce turbulence prior to the balancing valve. Vanes to be capable of reducing discharge turbulence equal to 5-10 pipe diameters of straight pipe, while allowing full rated movement of the connector.

2.18 REDUCERS/INCREASERS

Armstrong Fluid Technologies, eccentric and concentric, size per line size and pump suction, pump discharge sizes.

2.19 INSULATION

Supply & Return Piping

Insulate all supply and return piping with Johns Manville "Micro-Lok HP" rigid fiberglass one-piece pipe insulation, Knauf Insulation ”Earthwool 1000 Degree”, “Earthwool Redi-Klad 1000 Degree, Owens Corning “Fiberglas” rigid glass mineral wool one-piece pipe insulation with an all purpose vapor retarder jacket, or approved equal.

ASJ+ jackets shall be constructed of high density, white kraft bonded to aluminum foil with fiberglass yarn, with a pressure sensitive closure system or aluminum foil reinforced with a glass scrim bonded to a kraft paper interleaving with an outer film layer leaving no exposed paper. Adhesives or staples will not be required to seal the jacket and butt strips.

Fittings, valves and flanges shall be covered with Manville “Zeston 2000” insulated PVC fitting covers and Hi-Lo Temp insulation inserts or Knauf “Proto LoSmoke”.

Insulation for all exposed piping and all piping in mechanical rooms and similar spaces shall be covered with Zeston PVC jacketing. PVC jackets shall be 20 mils thick and shall be bonded with Zeston Perma-Weld adhesive. In crawl spaces, Knauf Earthwool RediKlad



1000° pipe covering shall serve as an acceptable alternate to standard pipe covering and PVC.

All piping exposed to the weather shall be finished with aluminum jacketing with a laminated moisture retarder or Earthwool RediKlad 1000° with Venture Clad embossed jacket. Aluminum jacketing shall be overlapped 2 to 3 inches and held in place with stainless steel bands to form a weather tight system. Elbows and tees shall be fitted with matching aluminum fitting covers. Other fittings in metal-jacketed systems shall be finished with conventional weather-resistant insulating materials with painted aluminum finish.

Piping insulation thickness shall be as follows:

FLUID TEMPERATURE

RANGE (°F)

CONDUCTIVITY RANGE

(in Btu-inch per hour per square

foot per °F)

INSULATION MEAN RATING

TEMPERATURE (°F)

NOMINAL PIPE DIAMETER (in inches)

1 and less

1 to <1.5

1.5 to

< 4

4 to

< 8

8 and up

INSULATION THICKNESS REQUIRED (in inches)

Space cooling systems (chilled water, refrigerant and brine)

40-60 0.21-0.27 75 0.5 0.5 1.0 1.0 1.0

Below 40 0.20-0.26 50 1.0 1.5 1.5 1.5 1.5

2.20 VALVES

Ball Valves:

2” and smaller: a. Horizontal: Nibco T-413 (threaded) S-413 (solder), Stockham B-321, or KITZ 22/23;

bronze body, regrinding type, Y-pattern, renewable disc, Class 150. b. Vertical: Nibco T-480 or KITZ 36; bronze body, inline lift type, Teflon seat, and discs,

spring actuated 125 lb. SWP. 2½” and larger:

a. Horizontal: Nibco F-918-B, Stockham G-931, or KITZ 78; IBBM, iron body, bolted cap, flanged, horizontal swing, renewable seats and discs, 125 lb. SWP

b. Vertical: Nibco F-910 or KITZ 7032;, iron body, globe style, spring actuated, renewable seats and disc, 125 lb. class rating.

Check Valves:

2” and smaller: a. Horizontal: Nibco T-413 (threaded) S-413 (solder), Stockham B-321, or KITZ 22/23;

bronze body, regrinding type, Y-pattern, renewable disc, Class 150. b. Vertical: Nibco T-480 or KITZ 36; bronze body, inline lift type, Teflon seat, and discs,

spring actuated 125 lb. SWP. 2½” and larger:

a. Horizontal: Nibco F-918-B, Stockham G-931, or KITZ 78; IBBM, iron body, bolted cap, flanged, horizontal swing, renewable seats and discs, 125 lb. SWP

b. Vertical: Nibco F-910 or KITZ 7032;, iron body, globe style, spring actuated, renewable seats and disc, 125 lb. class rating.

Triple Duty Valves: Bell & Gossett, or approved equal, triple duty angle pattern valves, designed to perform the functions of a non-slam check valve, shut off valve, and calibrated balance valve.

Butterfly Valves:

Heating water valves



a. 2½” and larger: Nibco WD/LD 2000 Series, Centerline or Demco, Series NE, Iron body, stainless steel stem, bronze disc, “Buna N” seat, throttling and memory stop handle.

Air Eliminators: Air vents shall be installed at all high points in all water piping systems.

Automatic air vents: Arnstrong AAE-750 where shown on the Drawings or approved equal.

Manual air vents: 1” IPS x 2” long air chambers with readily accessible Dole No. 10 vent valve and 1/8” copper tubing

Circuit Setters: ITT Bell & Gossett, Circuit Setter Plus series, Model CB, calibrated balance valves with NPT and solder connections. Valves shall be designed to allow installing contractor to pre-set balance points for proportional system balance prior to system start-up. All valves ½” to 3” pipe size to be of bronze body/brass ball construction with glass and carbon filled TFE seat rings. Valves to have differential pressure read-out ports across valve seat area. Read-out ports shall be fitted with internal EPT inserts and check valves. Valve bodies to have 1/4" NPT tapped drain/purge port. Valves shall have memory stop feature to allow valve to be closed for service and then reopened to set point without disturbing balance position. All valves to have calibrated nameplates to assure specific valve settings. Valves shall be designed for positive shut-off.

All valves, except pressure reducing and control valves, shall be the same size as the pipe to which they are installed.

Provide a union immediately downstream from each valve, unless the valve is flanged.

All valves shall be installed with the stem 45 degrees above horizontal, if possible. In no case shall the stem be installed below horizontal.

EXECUTION

3.1 INSTALLATION, GENERAL

Provide all necessary cutting in connection with this work. No structural members shall be drilled, bored, or notched in a manner which will impair their structural capacity. All penetrations of concrete or masonry shall be made with core drills. No cutting shall be done without the approval of the Engineer.

3.2 SEISMIC FORCE RESISTANCE

All mechanical systems and plumbing piping system shall adhere to the SMACNA “Seismic Restraint Manual: Guidelines for Mechanical Systems”, 2009 Edition with OSHPD amendments.

Equipment:

Each piece of equipment installed under this Section shall be constructed and anchored to structural supports to resist a seismic force and displacement in accordance with CBC Section 1616A1.17 through 1616A.1.26 and ASCE 7-10 Chapter 13, 26 and 30.

Equipment manufacturers shall have equipment certified to satisfy that it is compliant with these special minimum seismic resistance requirements. Compliance shall be certified by an approved, independent agency and proof of such compliance from the agency shall be provided.

Piping:

Flexibility of piping systems must be maintained by the use of flexible devices at critical points at junctions of separate building structures. Braces or anchors shall be designed to damp oscillations or check excessive movement. Flexible devices for piping of gas shall be loops or offsets. Flexible devices for other piping may be loops, Victaulic grooved, or roustabout couplings.



Piping at tops and bottoms of risers are critical points where flexibility is required, as well as at changes in direction on long runs of piping 4" and larger.

Tops of risers shall be restrained from motion in horizontal direction, and midpoints shall be anchored in all directions.

All piping bracing shall be designed to resist a seismic force and displacement in accordance with ASCE 7-10, Section 13.3 as defined in Section 13.6.7 and 13.6.8 and 2016 CBC Section 1616A.1.25 and 1616A.1.26.

The following table shows maximum lengths of shapes used for sway bracing:

TYPE/SIZE MAX. LENGTH TYPE/SIZE MAX. LENGTH Angle (l/r=200) Flat Bar (l/r=200)

1½ x 1½ x ¼" 4'-10" 1½ x ¼" 1'-2"

2 x 2 x ¼" 6'-6" 2 x ¼" 1'-2"

2½ x 2½ x ¼" 8'-2" 2 x ⅜" 1'-9"

3 x 3 x ¼" 9'-10"

Threaded Rod Pipe (Schedule 40)

⅜" 1'-7" 1" 7'-0"

½" 2'-1" 1¼" 9'-0"

⅝" 2'-7" 1½" 10'-4"

¾" 3'-1" 2" 13'-1"

1" 4'-2"

3.3 EQUIPMENT

Install equipment to provide good appearance, easy access, and adequate space to allow replacement and maintenance. Provide bases, supports, anchor bolts, and other items required to achieve this. Installation shall be level, above moisture level, and adequately braced.

Thoroughly lubricate equipment before operating. Repair of damage resulting from failure to comply with this requirement shall be the Contractor's responsibility. Extend ¼-inch schedule 40 black steel lubrication pipes from hard-to-reach locations to front of equipment or to access doors. Terminate with proper lubrication fittings.

Move equipment into building through available openings. Dismantle equipment where necessary to accomplish this. After reassembly, test equipment to verify its satisfactory operating condition.

Connections to piping shall be secured and properly aligned and all utility and control connections shall be properly isolated from the building structure by means of vibration isolators and flexible connections. Any equipment not meeting this requirement will be modified and properly reinstalled at no expense to the Owner.

3.4 ELECTRICAL REQUIREMENTS:

Electrical work in this Section shall conform to the requirements of NEC. Equipment shall conform to the standards of the National Electric Manufacturer's Association. Electrical equipment shall bear the label of Underwriters' Laboratories, Inc., where examination and listing service is available for such materials. Motors and motor control equipment shall be as specified below.

The work shall include the furnishing of:

Motor controls mounted as integral part of equipment assemblies. Pre-wired control panels as described and shown. Electronic control panels and their components.



Wiring for low voltage controls and "interlock work" except where specifically shown otherwise.

Installing of:

All motors. All control panels and their components. Low voltage wiring, line voltage "interlock" wiring, control wiring for safety devices, alarms,

and refrigeration. a. Wiring includes all connections to devices, and all wiring shall be installed in conduit.

Devices shall be installed in NEMA enclosures of type required for location.

Flush enclosures: Keystone "Telephone Cabinets" type PF with pull box knockouts. Surface enclosures: Keystone LJC.

Electrical Controls:

Submit shop-wiring diagrams of temperature controls and air conditioning unit controls for approval. Furnish approved wiring diagrams and assistance to Electrician.

Refer to Electrical, Fire Protection, Plumbing and Mechanical documents for work and devices required. All wiring required by plumbing and heating, ventilating and air conditioning work shall be performed by the Controls Contractor.

3.5 PAINTING

Properly prepare work to be painted. Priming as required herein, shall be of a material compatible with paint for finish painting.

All equipment and materials shall be cleaned of grease, wax, oil, rust or dirt in preparation for finish painting. Any prime coated surfaces showing signs of rust before being finish painted shall be thoroughly cleaned and a new prime coat applied.

Prime paint both sides of flashings prior to installation.

Furnish can of touch-up paint with each factory finished piece of equipment.

Paint all piping in mechanical rooms. Color as selected by the Owner.

Black steel piping exposed to the environment shall be painted with rust-inhibiting paint. Color as selected by Owner.

3.6 VFD INSTALLATION

Installation shall be the responsibility of the mechanical contractor.

Power wiring shall be completed by the electrical contractor, to NEC code 430.122 wiring requirements based on the VFD input current.

The contractor shall complete all wiring in accordance with the recommendations of the VFD manufacturer as outlined in the installation manual.

Start-Up

Factory start-up shall be provided for each drive by a factory authorized service center.

Product Support

Factory trained application engineering and service personnel that are thoroughly familiar with the VFD products offered shall be locally available at both the specifying and installation locations. A toll free 24/365 technical support line connected to factory support personnel located in the US shall be available. Technical support offered only through the local sales office is not acceptable.

3.7 IDENTIFICATION OF SYSTEMS



Nameplates

Nameplate bearing manufacturer's name or identifiable trademark shall be securely affixed in a conspicuous place on equipment, or name or trademark cast integrally with equipment, stamped or otherwise permanently marked on each item of equipment.

Piping

Locate pipe labels where piping is exposed or above accessible ceilings in finished spaces; machine rooms; accessible maintenance spaces such as shafts, tunnels, and plenums; and exterior exposed locations as follows: a. Adjacent to all valves and flanges b. Near each branch connection, excluding short takeoffs for fixtures and terminal units.

Where flow pattern is not obvious, mark each pipe at branch. c. At both sides of wall or floor penetrations. d. Before and after all wall, floor and ceiling penetrations and inaccessible enclosures. e. Adjacent to changes in direction. f. At access doors, manholes, and similar access points that permit view of concealed

piping. g. Near major equipment items and other points of origination and termination. h. Spaced at maximum intervals of 25 feet along each run. Reduce intervals in areas of

congested piping and equipment. i. On piping above removable acoustical ceilings. Omit intermediately spaced labels.

All piping shall be identified. Pipe Label Color Schedule: (per ANSI A13.1 / ASME A13.1-2007)

a. Potable, Cooling, Boiler Feed and other Water Piping: i Background Color: Green. ii Letter Color: White.

b. Fire Quenching Fluids: i Background Color: Red. ii Letter Color: White.

c. Combustible Fluids: i Background Color: Brown. ii Letter Color: White

d. Toxic and Corrosive Fluids i Background Color: Orange. ii Letter Color: Black

e. Flammable Fluids: i Background Color: Yellow. ii Letter Color: Black.

Valves

For identification and Owner's maintenance records, all valves shall be numbered and identified with clearly stamped 1¼" diameter brass tags, in accordance with drawings and service performed.

Control valves shall be also marked whether normally open (N.O.) or normally closed (N.S.).

Affix Underwriter's standard porcelain enameled identification signs to all fire protection sprinkler control valves, drain valves, and flow switches.

Equipment

All equipment shall be labeled with 1" high stencils showing identifying mark noted on drawings, and usage.

Warning signs shall be placed on machines driven by electrical motors that are controlled by fully automatic starters, per California Code of Regulations, Title 8, Subchapter 7 - General Industry Safety Orders, Article 7, Section 3320.



A typewritten schedule of all stencils and valve tags used, with identification, shall be framed and posted in mechanical rooms, at locations as directed.

3.8 CHILLER INSTALLATION

The following are considered functions normally required of the equipment installer.

Install unit on a foundation with flat support surfaces level within 1/16" and of sufficient length to support concentrated loading. Place isolation pads provided under the unit. Install unit per applicable Trane Installation Manual. Complete all water and electrical connections.

Where specified, provide and install valves in water piping upstream and downstream of the evaporator and condenser water boxes as means of isolating shells for maintenance and to balance and trim system.

Furnish and install a flow switch with timer or equivalent device in both the chilled water and condenser water piping, properly interlocked to insure that unit can operate only when water flow is established.

Furnish and install taps for thermometers and pressure gauges in water piping adjacent to inlet and outlet connections of both evaporator and condenser. Furnish and install drain valves to each water box.

Install vent cocks on each water box. Furnish and install strainers upstream of chiller evaporator and condenser bundles to protect tubes from potential damage caused by debris in the circulating water. Note: Failure to install strainers in all water piping entering the chiller could result in tube plugging conditions that could damage unit components. If the circulating pumps are immediately upstream of the chiller bundles, then the strainer can be installed immediately ahead of the pumps. If the circulating pumps are downstream of the chiller bundles, then the strainers should be installed immediately ahead of the chiller bundles.

Furnish sufficient refrigerant 25.0 lb per machine and dry nitrogen 50.0 lb per machine for pressure testing under manufacturer's supervision.

Start-up unit under supervision of a qualified Trane field engineer. Where specified, insulate evaporator and any other portions of machine required to prevent

sweating under normal operating conditions. Water connection piping must not transfer forces to the chiller. Because of cumulative

tolerances in manufacture and field installation, prepiping of water connections closer than 36" is not recommended. Any problems associated with prepiping of water connections closer than 36" to the chiller are the responsibility of the installing contractor.

Furnish and install vent lines for rupture disk and purge venting to atmosphere per ASHRAE 15 and unit installation manual. Locally sourced and approved piping may be required between the chiller and the RuptureGuard.

3.9 INSTALLATION, INSULATION

Piping Insulation

Insulation shall be applied in complete accordance with the manufacturer’s published installation instructions on clean, dry surfaces. All insulation shall be continuous through wall and ceiling openings and sleeves. All joints shall be firmly butted together and longitudinal jacket laps and butt strips shall be smoothly secured. Specified adhesives, mastics and coatings shall be applied at the manufacturer’s recommended minimum coverage per gallon.

Provide insulated dual temperature pipes or cold pipes conveying fluids below ambient temperature with vapor retardant jackets with self-sealing laps. Seal all pipe terminations with vapor barrier mastic.

Inserts shall be installed at outside hangers. Inserts between the pipe and pipe hangers shall consist of rigid closed cell pipe insulation of thickness equal to the adjoining insulation. Inserts shall not be less than 12" long for pipe sizes through 2½" and not less than 18" long



for pipes larger than 2 ½". Refer to manufacturer’s recommendations for densities, sectional length, gauge of metal shield and distance between centering.

Metal shields shall be applied between hangers or supports and the pipe insulation. Shields shall be formed to fit the insulation and shall extend up to the center line of the pipe and the length specified for hanger inserts.

All pipe insulation ends shall be tapered and sealed, regardless of service.

3.10 INSTALLATION, HANGERS & SUPPORTS

Piping

Installation of piping shall be such that damage cannot result through loading, expansion or contraction of piping. Anchors shall be installed to obtain uniformity of pipe movement.

Pipe supports shall be spaced sufficiently close to support pipes properly without formation of pockets. Hangers shall be installed at ends of mains and branches. Maximum horizontal support spacing shall be as follows:

Provide resilient mounting for domestic water piping. Thermal insulation may serve as resilient mounting for insulated piping.

Suspended water piping shall be anchored with steel struts installed at midpoint of each run.

No valve or piece of equipment shall be used to support piping. Pipes through studs or joists shall be isolated from structure with properly sized Hubbard

"Hold-Rite" suspension clamps. Install hangers and supports complete with necessary attachments, inserts, bolts, rods,

nuts, washers, and other accessories. Install hangers and supports to allow controlled thermal and seismic movement of piping

systems, to permit freedom of movement between pipe anchors, and to facilitate action of expansion joints, expansion loops, expansion bends, and similar units.

Install lateral bracing with pipe hangers and supports to prevent swaying. Installation of piping shall be such that damage cannot result through loading, expansion or

contraction of piping. Anchors shall be installed to obtain uniformity of pipe movement. Install building attachments within concrete slabs or attach to structural steel. Install

additional attachments at concentrated loads, including valves, flanges, and strainers, 2-½ inches and larger and at changes in direction of piping. Install concrete inserts before concrete is placed; fasten inserts to forms and install reinforcing bars through openings at top of inserts.

Metal Pipe-hanger Installation: Install hangers, supports, clamps, and attachments as required to properly support piping from the building structure.

Metal Trapeze Pipe-Hanger Installation: Support together and space trapezes for smallest pipe size or install intermediate supports for smaller diameter pipes as specified for individual pipe hangers.

Thermal-Hanger Shield Installation: Install in pipe hanger or shield for insulated piping.

Load Distribution: Install hangers and supports so that piping live and dead loads and stresses from movement will not be transmitted to connected equipment.

Pipe Slopes: Install hangers and supports to provide indicated pipe slopes and to not exceed maximum pipe deflections allowed by ASME B31.9 for building services piping.

Insulated Piping: Attach clamps and spacers to piping.

a. Piping Operating above Ambient Air Temperature: Clamp may project through insulation.

b. Piping Operating below Ambient Air Temperature: Use thermal-hanger shield insert with clamp sized to match OD of insert.

c. Do not exceed pipe stress limits allowed by ASME B31.9 for building services piping.



Pipe Supports Pipe supports shall be spaced sufficiently close to support pipes properly without formation

of pockets. Hangers shall be installed at ends of mains and branches and maximum intermediate spacing shall be as follows:

Nominal Diameter Pipe (inches)

Maximum Space Between Hangers (feet)

Minimum Recommended

Rod Diameter for Single Rigid Rod Hangers (inches)

Standard Steel Pipe

Copper Tube

Water Steam Water Copper Steel

1/2 7 8 5 3/8 3/8

3/4 7 9 5 3/8 3/8

1 7 9 5 3/8 3/8

11/4 7 9 7 3/8 3/8

11/2 9 12 8 3/8 3/8

2 10 13 8 3/8 3/8

21/2 11 14 9 ½ ½

3 12 15 10 ½ ½

31/2 13 16 11 ½ ½

4 14 17 12 1/2 5/8

3.11 INSTALLATION, PIPING

Rough in shall proceed as rapidly as general construction will permit. All rough-in shall be complete, at locations verified by Engineer and/or Owner, and tested and inspected prior to installation of concrete, lath, plaster, gypsum wallboard, or other finishes.

All piping shall be concealed in finished rooms, installed in furred walls and partitions. Where furred or suspended ceilings occur, piping shall be installed in the concealed space at points adjacent to beams and/or other structural members, and coordinated with ductwork and equipment. Where exposed piping occurs, it shall be installed parallel to or at right angles to building walls, unless specifically shown otherwise on the Drawings.

Installation of piping shall be such that damage cannot result, through thermal expansion or contraction, to piping, building, or pipe hangers and supports. Anchors shall be installed at midpoints of all runs in main piping for the purpose of localizing pipe expansion or prevention of creepage.

All pipe lines shall be installed free from traps and air pockets, true to line and grade, with suitable supports properly spaced. All piping shall be installed without undue stresses and with provision for expansion and contraction.

All piping shall be new and free from foreign substances. American standard pipe threads shall be used for IPS threaded work. Joints in threaded piping shall be made up with Teflon tape applied to the male threads only. No screwed pipe joints shall be caulked or packed with rope or other packing materials. Pipe shall be free from tool marks, threads cut accurately with not more than 2 threads showing beyond fitting. Friction wrenches shall not be used with plated, polished, or soft metal piping. All changes in pipe size shall be made with reducing fitting. Bushings will not be permitted.

Protect unattended openings in piping during construction.



Weld all pipe 2.5 inches and larger. Use the following procedure. All welders must be AWS certified. AWS B2.1 SMAW 6G Pipe Welding Procedure Specifications.

Welding process: SMAW Grove Angle: 60 degrees Position: 6G Fixed position Material/Spec: A 106 Weld Progression: Up Thickness (pipe/tube): Groove (in) .280 Backing: No Notes: Sch. 40 Pipe Current/Polarity: DCEP Filler Metal Class: E6010Rt/E7018F1 Root Opening: 1/16 to 1/8 Other Filler Metal Class: Rt. 1/8, 3/32 Filler

Welded joints shall be beveled and butt-welded. Reductions of pipe shall be made with forged steel welding fittings. Branch reductions of two or more pipe sizes smaller than the main, may be Bonney "Weld-O-Let" fittings, or equal. Job fabricated reductions and branches shall not be used. All pipe burrs shall be reamed out. Welding rods shall be as follows, or approved equal:

Pipe Size Arc Welding Gas Welding 2" and larger Fleetweld #5 Oxweld #1 or Page Hi-Test M 1½" and smaller None Oxweld #1 or Page Hi-Test M

All copper tubing shall be formed in a workmanlike manner, in accordance with the Pipe and Tube Bending Handbook of the Copper and Brass Research Association. A tube bender giving support to the periphery of the tube shall be used. The tubing shall be protected against flatting or other injury.

All copper connections and joints shall be made in accordance with the Copper Tube Handbook, Copper and Brass Research Association. No swaged connections will be permitted. All valves, pumps, and similar equipment shall be connected to copper piping through union or flange adapter fittings.

Install air vents at all water piping high points when direction of flow is downward. Install sediment drain faucets at all low points.

Valves, cocks, etc., shall be installed to allow convenient accessibility and operation.

Unions and flanges shall be installed to allow convenient replacement of all equipment and cleaning tubes.

A union connection shall be installed downstream from all valves, at equipment connections and at other locations as required or directed.

Shut off valves shall be provided in all main services, and where required to permit proper servicing of equipment. Valves of one type shall be of one manufacturer.

All valves shall be of the same size as the pipelines in which they are installed, unless specifically sized on the Drawings. All hand controlled line valves shall be ball valves, except where throttling control or frequent operation is required, in which case globe or angle valves shall be used. Globe valves in horizontal lines shall be installed with stem in horizontal to permit line draining. All globe and angle valves shall be installed to close against pressure. Disc valves shall have discs suitable for the services for which they are to be used.

All valves shall be accessible and shall not be installed with the stems below the horizontal plane. Provide access panels at walls, ceilings, or floors.

Provide prime coated escutcheon plates at all points where exposed piping penetrates finished wall ceilings or floors.

Cutting or boring of joists or other structural members shall be done only when alternative routing is impossible and only upon written approval of the Engineer and/or Owner.

3.12 TESTS, INSPECTIONS:

This Contractor shall not allow or cause any work of this Section to be covered or enclosed until it has been inspected, tested, and approved by the Architect and the authorities having jurisdiction



over the Work. Should any of this work be enclosed or covered up before such inspection, testing, and approval, this Contractor shall uncover the work, have the necessary inspections, tests, and approvals made and, at no expense to the Owner, make all repairs necessary to restore both his work and that of other contractors which may have been damaged to be in conformity with the Contract Documents.

Furnish all necessary labor, materials, and equipment for conducting tests, and pay all expenses in connection therewith. Should leaks develop while testing, repairs shall be made, and tests shall be repeated until a satisfactory test is obtained.

In any test, proper safety procedures and equipment should be used, including personal protective equipment such as protective eyewear and clothing. Installers should always consider local conditions, codes and regulations, manufacturer’s installation instructions, and Engineer's project specifications in any installation.

Make all necessary control adjustments and balancing of air and water flows. Operate the entire system for a period of time not less than 3 working days for the purpose of proving satisfactory performance. During this period, instruct such persons as the Owner and/or Engineer may designate in the proper operation of the systems. Should further adjustment prove necessary, operating tests shall be repeated until a satisfactory test result is obtained.

Heating water and chilled water piping shall be hydrostatically tested at 125-psi pressure and proved tight before covering. Tests may be made in sections provided connection to service previously tested is included in each succeeding test. Systems shall be tight for eight hours.

3.13 CHEMICAL TREATMENT AND CLEANING OF HYDRONIC PIPING

After all hydronic piping has been hydrostatically tested, the piping shall be flushed thoroughly with water to remove all loose foreign material that may be present. Existing piping shall be drained and refilled.

3.14 CLEANUP

Upon completion of the work of this Section, remove all material, debris, and equipment associated with or used in the performance of this work.

SEQUENCE OF OPERATIONS

4.1 SYSTEM COMPONENTS

The chilled water system is a constant volume primary / variable volume secondary system.

There will be 21 individual ice tanks and 12 future. There will be three chillers CH-1 & CH-2 on the primary CW system and CH-3 on the

secondary CW system. a. (1) 300 ton chw / 240 ton ice making nominal capacity chiller CH-1. b. (1) 300 ton chw / 240 ton ice making nominal capacity chiller CH-2. c. (1) 500 ton chw nominal capacity chiller CH-3

There will be two primary chilled water pumps PCHWP-1 & PCHWP-2, and one future running at constant volume.

There will be two condenser water pumps CWP-1 & CWP-2 for Cooling Tower 1, and one CWP-3 for the Cooling Tower 2 all running at constant volume.

There will be one two cell cooling tower with CT-1A & CT-1B with VFDs on the cooling tower fans, and one single cell 500 T cooling tower CT-2.

There will be two secondary chilled water pumps SCHWP-1 & SCHWP-2 running at variable volume with variable frequency drives.

There will be one secondary chilled water pump pressurizing CH-3 running at variable volume with variable frequency drive



There will be one chilled water pump CHWP-1 serving HX-3 plant side running at constant volume.

There will be one chilled water pump CHWP-2 serving HX-3 I.T. Bldg. side running at variable volume with VFD.

There will be three modulating 3-way valves V-8, V-10, & V-11 for mixing chilled water on the primary loop with position % feedback.

There will be two modulating 2-way valves V-9 & V-18 with position % feedback. There will be eight actuated isolation valves V-4, V-5, V-6, V-7, V-12, V-13, V-14, & V-15 on

the primary CHW loop. There will be six actuated isolation valves V-20, V-21, V-22, V-23, V-24, & V25 on the CDW loop. There will be three actuated isolation valves V-17 & V-18 & V-XX on the secondary CHW loop. These valves are equipped with end switches with position indication for full open and closed.

There will be one chilled water fan coil unit FCU-1, and one exhaust fan EF-1 serving the chiller room. EF-1 is equipped with a VFD.

There will be four 2-position motorized dampers (MD) to control airflow: MD-1 & MD-2 (FCU-1), MD-3 & MD-4 (EF-1).

4.2 SENSORS

Secondary Chilled Water Supply Temperature (SCHWS, TS-9)

Secondary Chilled Water Return Temperature (SCHWR, TS-10)

Secondary Chilled Water supply to CH-3 (SCHW, TS-XX)

Secondary Chilled Water Return from CH-3 (SCW TS-XX

Secondary Chilled Water Differential Pressure at Buildings (N.I.C.)

Secondary Chilled Water Differential Pressure at Plant (DP-1)

Secondary Chilled Water Differential Pressure at CH-3 (DP-XX)

Secondary Chilled Water Flow to CH-3 (FM-XX)

Secondary Chilled Water Flow Rate in GPM (FM-3)

Primary Chilled Water Supply Temperature from Chillers (TS-1)

Primary Chilled Water Return Temperature to Chillers (TS-2)

Primary Chilled Water Flow Rate in GPM (FM-2)

Primary Chilled Water Flow Rate from Ice Storage in GPM (FM-1)

Secondary chilled water return flow after bypass valve (FM-4)

Secondary Leaving HX-1 Temperature (TS-11)



Secondary Entering HX-3 Temperature (TS-7)

Primary Chilled Water Valve to Bypass Ice Storage (V-8)

Primary Entering Temperature HX-3 (TS-6)

Primary Leaving Temperature HX-3 (TS-5)

Leaving Ice Tanks Temperature (TS-3)

Mixed Temperature after V-8 valve (TS-4)

Cooling Tower Leaving Temperature (TS-13)

Cooling Tower Entering Temperature (TS-14)



Chiller CH-1 Differential Pressure CHW (DPS-3)

Chiller CH-2 Differential Pressure CHW (DPS-4)

Chiller CH-1 Differential Pressure CDW (DPS-5)

Chiller CH-2 Differential Pressure CDW (DPS-6)

Outside Air Temperature

4.3 SAFETIES

All primary chilled water pumps will have a digital current switch installed at the pump motor starter.

If a pump has been signaled to start and the current switch does not status after a 20 seconds time out, then the pump will be disabled and an alarm will be initiated.

If all secondary pumps fail, initiate a shutdown sequence. Shut down chiller plant. Send critical failure alarm

Secondary DP sensor alarm will be initiated if DP-1is below 5 psid and any secondary pump is command at 100% and any secondary pump has been running for more that 10 minutes. Shut down chiller plant. Send failure alarm.

The cooling tower fan is shutdown upon cooling tower vibration switch detection of vibrations. The vibration switch is directly interlocked with the cooling tower fan VFD emergency shutdown contact.

In the event an alarm contact closure activated by DP switch at 7 psig below set point for GFS-1, send a critical alarm page to the facilities watch desk.

Monitor TS-1 on the outlet of the chillers. Alarm if V-14, V-12 & 13 are open and V-15 is closed when TS-1 temperature drops to the ice production set point, then send a valve failure alarm and shut down chillers.

Monitor TS-6 on the inlet to HX-3. If temp drops to 38°F or below, then modulate V-9 to increase TS-6 temp. Send a low temp alarm to facilities desk.

Monitor TS-4 during off-hours and if temperature increases to 46°F, send alarm and enable chiller with set point 41°F to serve heat exchanger (HX-3).

4.4 GENERAL OPERATIONAL NOTES:

Start/Stop

All chillers are available for operation 24 hrs a day, 7 days a week. Enable the chiller plant upon a call for cooling from the campus, schedule, input from GELI

Control or manual enable. Chillers operate under their own operating and safety controls. Run cooling towers and pumps a minimum of 60 minutes in a 24-hour period at night. The

cooling towers will be idle much of the time due to the initial plant load being satisfied by the ice storage system.

Alarm if temperatures deviate more than +/- 2°F (adj.) off of setpoint.

All EMS set points are adjustable from the graphic workstation.

Calculate chiller plant load in Tons and display on graphic.

CH-1 and CH-2 Chiller Staging

Chiller CH-1 & CH-2 set points: a. 41°F (adj.) during the day on chiller only mode

Both Chillers will be dedicated to charging the ice tanks.



The lag chiller will stage on if the TS-4 is 2°F above set point for at least 5 minutes (adj.) during chiller and ice harvest mode.

The lag chiller will stage down when the chiller load has been equal or less than 40% of the chiller’s load capacity for at least 5 minutes (adj.).

The lead and lag chiller and associated pumps and valves will rotate for equal runtime.

Monitor Ice usage and when 90% is used, send alarm.

Griswold pump (WT-01)

Monitor status contacts. Start/Stop of system. Runs when condenser water pump runs. Stops one hour after

condenser water pump stops. Alarm if signal and no status.

Dolphin Water Treatment System (WT-02)

Monitor water treatment alarm and status contacts. Start/Stop of system based on schedule (adj.). Mode 0 – Both Chillers off, Mode 1 – Chillers providing the cooling in combination with or

without ice tanks, Mode 2 – Chillers charging the ice tanks. a. If mode 1 or 2 has not been initiated within a 24 hour period, energize the lead & lag

condenser water pump and centrifugal separator at 1.00 AM (adj.). Open all condenser water isolation valves at chillers and cooling towers.

b. Run for min 60 minutes in this flush mode. Revert to mode 0 at the end of flush mode. Capture this sequence and identify as flush mode on display graphic.

c. De-energize cooling tower fans in flush mode. d. Provide start/stop function for centrifugal separator (WT-01) and dolphin water

treatment system (WT-02). e. Centrifugal separator (WT-01) and dolphin water treatment system (WT-02) to start

when system switches from mode 0 to mode 1 or 2 and vice-versa. f. Centrifugal separator (WT-01) and dolphin water treatment system (WT-02) shall run

during flush mode and in modes 1 or 2.

Refrigerant Monitoring

Monitor alarm contacts. a. Refrigeration Room cooled by FCU-1 and ventilated by EF-1 running continuously 24

hrs a day, 7 days a week. b. Chiller Room temperature set point 85°F(adj.) at FCU-1 T-stat. c. EF-1 VFD to be controlled by static sensor mounted in ductwork. d. Air balancer to set stop positions for open and close damper control signals.

FCU-1 and EF-1 to have four modes of operation: a. Normal mode - Close MD-1 (OA Damper) and open MD-2 (RA Damper) to minimal

economizer position. Open MD-3 (Lower Intake) and close MD-4 (Upper Intake). Set EF-1 duct pressure set point to obtain 2600 CFM.

b. Normal economizer mode - When outside air temp is lower than 75 degrees (adj) and there is a demand for cooling, Modulate MD-1 open and Modulate MD-2 close. Open MD-3 (Lower Intake) and MD-4(Upper Intake). Set EF-1 duct pressure set point to obtain 4000 CFM.

c. Ice making economizer mode - Secondary CHW system is off during Chiller ice making mode. Open MD-1 (OA Damper) and close MD-2 (RA Damper). Open MD-3 (Lower Intake) and open MD-4 (Upper Intake). Set EF-1 duct pressure set point to obtain 4000 CFM.

Start cooling towers. Stage cooling towers and valves to maintain 70°F (adj.) cooling tower leaving water temperature set point.

Close V-16 and V-17 secondary HX isolation valves.



Upon ice production completion, EMS will disable all chillers, cooling towers, condenser water pumps, and one primary pump. EMS will keep lead primary pump, and CHWP-1 & 2 running.

Open V-5 (CH-1) and V-4 (CH-2) chiller bypass valves. Valve positions are proven. Close chiller V-7 & V-20 (CH-1) and V-6 & V-21 (CH-2). Valve positions are proven Close tower V-22 & 23 (CT-1A) and V-24 & 25 (CT-1B).

Modulate V-9 to maintain TS-8 temp at 44°F.

Upon failure of any equipment, send a failure alarm.

4.5 ICE HARVEST SEQUENCE OF OPERATION (Stage 1 and 2)

If during ice harvest TS-3 is within 2°F of TS-1and V-8 open 100% to the ice tanks for 10 minutes, then set “Ice is Depleted” flag and enable chiller only sequence.

Disable all chillers, cooling towers, condenser water pumps.

CHWP-1 and CHWP-2 are On.

Open lead chiller bypass valve. Lag chiller bypass valve is closed. Lead and lag chiller isolation valves are closed.

Close valves V-6, 7, 20, 21, 22, 23, 24 & 25.

Start lead primary pump.

Modulate V-8 to maintain temperature set point of 41°F at TS-4. Alarm if V-8 signal does not match V-8 feedback.

Open V-14, V-13 & V-17 HX-1 isolation valve. Valve positions are proven.

Start lead secondary pump.

Shut off CHWP-1 & CHWP-2 60 (adj) seconds after lead secondary pump start.

Close V-15 loop control valve.

Modulate V-11 (HX-1) valve to maintain the secondary chilled water supply temperature TS-11 set point at 44°F (adj.).

If the secondary chilled water temperature at TS-11 is above set point for 10 minutes, then enable the lag HX-2.

Open V-12 & V-18 (HX-2) isolation valve. Valve positions are proven.

Open lead and lag chiller bypass valves. Lead and lag chiller isolation valves are closed.

Start the lag primary pump.

Modulate V-10 (HX-2) valve to maintain the secondary chilled water supply temperature TS-12 set point at 44°F (adj.).

Start lag secondary pump.

If TS-11 or TS-12 is 2°F above set point for 10 minutes, then start the simultaneous chiller and ice harvest sequence.

At least once per MONTH or WEEK harvest ice to “Ice is Depleted” signal to reset ice storage tanks

4.6 SIMULTANEOUS CHILLER AND ICE HARVEST SEQUENCE OF OPERATION (Stage 3 and 4)

If during simultaneous chiller and ice harvest TS-3 is within 2°F of TS-1and V-8 open 100% to the ice tanks for 10 minutes, then set “Ice is Depleted” flag and enable chiller only sequence.

GELI Controller will set flag to use CH-3 or CH-1 & CH-2



Enable lead chiller sequence. Lead chiller set point will be 41 °F (adj.).

Open lead chiller CHW isolation valve when close its CHW bypass valve.

The lag chiller CHW bypass valve will remain open and its CHW isolation valve will remain closed.

Open lead chiller CW isolation valve.

Enable lead cooling tower and start the lead CW pump.

Both primary chilled water pumps are on

Start lead condenser water pump.

Secondary pumps SCHWP-1 and 2 are On.

Modulate V-8 to maintain temperature set point of 41°F at TS-4. Alarm if V-8 signal does not match V-8 feedback (deadband of 5% with 30 second delay).

Modulate V-11 and V-10 to maintain the secondary chilled water supply temperature set point at TS-11 (HX-1) and TS-12 (HX-2) respectively.

If the primary chilled water temperature at TS-4 is 2°F above set point for 10 minutes with ice harvesting and lead chiller running, then enable the lag chiller sequence.

Open lag chiller CHW isolation valve then close its CHW bypass valve.

Open lag chiller CW isolation valve. Valve positions are proven open.

Enable lag cooling tower and start lag condenser water pump.

Enable lag chiller.

Open cooling tower valves V-22 & 23 (CT-1A) and V-24 & 25 (CT-1B) Valve positions are proven open.

Modulate V-8 to maintain temperature set point of 41°F at TS-4. Alarm if V-8 signal does not match V-8 feedback (deadband of 5% with 30 second delay).

Modulate V-11 and V-10 to maintain the secondary chilled water supply temperature set point at TS-11 (HX-1) and TS-12 (HX-2) respectively.

Cooling towers to maintain 68°F (adj.) cooling tower leaving water temperature / chiller condenser water entering temperature at TS-13.

Secondary pumps SCHWP-1 and 2 are On to maintain secondary chilled water differential pressure.

Rotate the equipment to maintain equal runtime. Rotate on a weekly basis.

4.7 CHILLER CH-1 & CH-2 ONLY SEQUENCE OF OPERATION (Stage 5 and 6)

Open the lead chiller CHW isolation valve. Close the lag chiller CHW isolation valve. Close both chiller CHW bypass valves.

Open the lead chiller CW isolation valve. Close the lag chiller CW isolation valve. Valve open positions are proven.

Enable the lead cooling tower and start the lead CW pump. Valve positions are proven open.

Open V-8 to bypass ice tanks.

Open valve V-14.

Open lead HX-1 isolation valve V-13 & V-17. Valve positions are proven.

Close V-15 loop control valve. Valve positions are proven.



Start lead Primary pump after valve positions are proven open.

Start lead chiller after valve positions are proven open and primary pump is running.

Modulate V-11 to maintain the secondary chilled water supply temperature set point at TS-11 (HX-1).

Stage cooling towers to maintain 68°F (adj) cooling tower leaving water temperature at TS-13.

Lead secondary pump is On.

If the lead chiller is running and primary chilled water temperature at TS-4 is 2°F above set point for 10 minutes, then enable the lag chiller sequence.

The chillers must have delays between stages to prevent short cycling.

Start lag primary chilled water pump, and lag condenser water pump.

Open lag chiller valves V-7 & V-20 (CH-1) or V-6 & V-21 (CH-2), and cooling tower valves V-22 & 23 (CT-1A) and V-24 & 25 (CT-1B). Valve positions are proven open.

Open lag HX-2 isolation valves V-12 & V-18. Valve positions are proven.

Start lag secondary pump.

Enable lag chiller after valve positions are proven.

The lag chiller will stage down at 40% of chiller load capacity if plant load requirements are being met based on the equation: a. TONS = [GPM(SCHWRT-SCHWST)]/24 = [ (FM3) x (TS10 – TS9)]/24

4.8 CHILLER CH-3 ONLY SEQUENCE OF OPERATION (Stage 9)

Open the chiller CHW isolation valve. Close chiller CHW bypass valves.

Open the chiller CW isolation valve. Valve open positions are proven.

Enable the cooling tower CT-2 and start the CWP-3 pump. Valve positions are proven open.

Open lead HX-1isolation valve V-17, Valve positions are proven

Maintain 68°F (adj) cooling tower leaving water temperature at TS-XX.

Lead secondary SCHWP pump is On.

If the chiller CH-3 is running and secondary chilled water temperature at TS-10 is 2°F above set point for 10 minutes, then

If Ice Storage capacity is available initiate Ice Harvest sequence in series with CH-3 operation.

If Ice Storage capacity is not available, initiate CH-1 & CH-2 in stages with CH-3 (Stage 5 & 6)

The chillers must have delays between stages to prevent short cycling.


Costa Engineers SECTION 23 0593 – TESTING, ADJUSTING & BALANCING FOR HVAC Project No. 17035 Page 1

SECTION 23 0593

TESTING, ADJUSTING, AND BALANCING FOR HVAC

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section.

B. Section 23 0000 - mechanical equipment

1.2 SUMMARY

A. Section Includes:

1. Balancing hydronic systems

2. Controls verification

1.3 SCOPE

A. The T&B Agency will provide the following services:

1. Provide all supervision, personnel, instruments, calibration equipment, and all other materials necessary to perform balancing and testing, and compile test data including calculations and services necessary for the heating, ventilating, and air conditioning systems for this project, all in accordance with the project Drawings and Specifications and as specified herein.

2. The T&B Agency shall be responsible for inspecting, balancing, adjusting, testing, and logging the data of the performance of all heat exchangers, and the flows of water through all coils.

3. The T&B Agency shall balance, test, and adjust the systemic components to obtain optimum conditions in each conditioned space in the building. If construction deficiencies are encountered which preclude obtaining optimum conditions, the deficiencies will be recorded and given to the Owner’s Representative. The T&B Agency is advised that deficiencies in the HVAC construction are often encountered during final T&B services, and should include in the bid an amount deemed advisable to compensate for time in identifying the deficiencies.

B. During construction, the T&B Contractor shall inspect the installation of pipe systems, sheet metal work, temperature controls, and other component parts of the HVAC systems. Inspections shall be conducted a minimum of three times. Typically, this is performed when 60% of the ductwork and piping are installed and again when 90% of the total system is installed and prior to insulation. A copy of the written report is to be issued to the Mechanical Engineer for review.

1.4 SUBMITTALS

A. Strategies and Procedures Plan: Within 30 days of Contractor's Notice to Proceed, submit T&B strategies and step-by-step procedures.

B. System Readiness Checklists: Within 30 days of Contractor's Notice to Proceed, submit system readiness checklists for use by systems installers in verifying system readiness for T&B. Examination Report: Within 30 days of Contractor's Notice to Proceed, provide a summary report of the examination review required in Part 3 “Examination”, if issues are discovered that may preclude the proper testing and balancing of the systems.



C. Examination Report: Provide a summary report of the examination review if issues are discovered that may preclude the proper testing and balancing of the systems.

D. Certified T&B reports: Within 30 days of completion of balancing work, submit AABC-certified T&B report.

1. Submit one copy of the final T&B Report directly to the design professional of record. Provide three additional copies to the contractor.


A. T&B Contractor Qualifications:

1. General Contractor will employ a T&B Agency that is certified by the Associated Air Balancing Council (AABC). The T&B Agency will have experience in the field of hydronic system balancing, possess calibrated instruments, and employ qualified Supervisors and skilled Technicians to perform all required tests. The T&B Agency shall have a minimum of ten (10) years experience in the Testing, Adjusting, and Balancing field.

B. T&B technician shall perform the following:

1. Review field data reports to validate accuracy of data and to prepare certified T&B reports.

2. Certify that the T&B team complied with the approved T&B plan and the procedures specified and referenced in this Specification.

3. Certify the T&B report

C. T&B Conference: If requested by the Owner or Construction Manager after approval of the T&B Agency’s submittals, meet to develop a mutual understanding of the details

1. Agenda Items:

a. The examination report.

b. The Strategies and Procedures plan.

c. Systems readiness checklists.

d. Coordination and cooperation of trades and subcontractors.

e. Coordination of documentation and communication flow.

D. Approved Test and Balance agencies in the area:

RS Analysis, Inc. 1035 Suncast Lane, Suite 130 El Dorado Hills, CA 95762 (916) 358-5672

National Air Balance Company, Inc. 4171 Business Center Drive Fremont, CA 94538 (510) 623-7000

Raglen System Balance, Inc. 1121 University Terrace Reno, NV 89502 (775) 747-0100

Pacific Test & Balance, Inc. 4771 Mangels Blvd. Fairfield, CA 94534 (707) 696-2444

E. T&B Report Forms: Use standard T&B contractor's forms.



F. Instrumentation Type, Quantity, Accuracy, and Calibration: As described in “AABC National Standards for Total Systems Balance.”

PART 2 - PRODUCTS (NOT USED)

PART 3 - EXECUTION

3.1 CONTRACTOR RESPONSIBILITIES

A. Provide T&B agency one complete set of contract documents, change orders, and approved submittals in digital and hard copy formats. Project Schedule and Mechanical Contractor’s Shop Drawings and Temperature Control Drawings shall be provided as issued or received.

B. Controls contractor shall provide required BAS hardware, software, personnel and assistance to T&B agency as required to balance the systems. Controls contractor shall also provide trending report to demonstrate that systems are complete.

C. Coordinate meetings and assistance from suppliers and contractors as required by T&B agency.

D. Provide additional valves, dampers, sheaves and belts to properly test and balance, which shall be installed by the Mechanical Contractor as directed by T&B agency, at no additional cost to owner.

E. Mechanical Contractor shall install test holes where indicated by the T&B Agency. Test holes shall be complete with removable and replaceable plugs

F. Flag all manual volume dampers with fluorescent or other high-visibility tape.

G. Provide access to all dampers, valves, test ports, nameplates and other appurtenances as required by T&B agency.

H. Replace or repair insulation as required by T&B agency.

I. Have the HVAC systems at complete operational readiness for T&B to begin. As a minimum verify the following:

1. Hydronics:

a. Piping is complete with all terminals installed.

b. Water treatment is complete.

c. Systems are flushed, filled and air purged.

d. Strainers are pulled and cleaned.

e. Control valves are functioning per the sequence of operation.

f. All shutoff and balance valves have been verified to be 100% open.

g. Pumps are started, and proper rotation is verified.

h. Pump gauge connections are installed directly at the pump inlet and outlet flange or in discharge and suction pipe prior to any valves or strainers.

i. VFD start-up is complete and all safeties have been verified.

j. System readiness checklists are completed and returned to T&B agency.

J. Promptly correct deficiencies identified during T&B.

K. Maintain a construction schedule that allows the T&B agency to complete work prior to occupancy.

L. Before testing or balancing is started, the Mechanical Contractor shall adjust belts and sheaves; align all parts; oil and grease bearings in accordance with manufacturer’s instructions; clean



exterior surfaces of coil tubes and fins; flush interior of coil tubes, pull until clean; and check mixing damper operation to insure free operation and activation by the correct thermostat

M. The Mechanical Contractor shall be responsible for certifying in writing that the system, as scheduled for balancing, is operational and complete. Completeness shall include not only the physical installation, but the Mechanical Contractor’s certification that the prime movers are installed in good working order, and that full load performance has been preliminary tested under the certification of the Mechanical Contractor. Before any testing and balancing is started, a complete report shall be sent to the T&B Agency by the Mechanical Contractor.

N. The Mechanical Contractor shall be responsible for making all modifications to rectify discrepancies reported by the T&B Contractor as indicating non-compliance with the Contract Documents. By completing the work on time, the Mechanical Contractor shall provide sufficient time before the completion date so that balancing can be accomplished.

3.2 EXAMINATION & REVIEW

A. Review the Contractor shop drawing submittals for their effect on the test and balance process and overall performance of the HVAC system. Submit recommendations for enhancements or changes to the system.

B. Review location, type, and size of balancing valves, flow metering stations, and automatic control valves in the water flow station.

C. Review location of pressure sensors in the water distribution system.

D. Review automatic control systems as they affect the test and balance procedure.

E. Review sheet metal and piping shop drawings to verify the installation of flow control devices.

F. Examine systems for installed balancing devices, such as test ports, gage cocks, thermometer wells, flow-control devices, balancing valves and fittings, and manual volume dampers. Note the locations of devices that are not accessible for testing and balancing.

G. Review the approved submittals for HVAC systems and equipment.

H. Review equipment performance data including fan and pump curves.

I. Examine HVAC equipment and verify that bearings are greased, belts are aligned and tight, clean permanent filters are installed, and controls are ready for operation.

J. Examine strainers to verify that Mechanical Contractor has replaced startup screens with permanent screens and that all strainers have been cleaned.

K. Examine two-way valves for proper installation and function.

L. Examine three-way valves for proper installation for their intended function of diverting or mixing fluid flows.

M. Examine heat-transfer coils for correct piping connections and for clean and straight fins.

N. Examine air vents to verify that mechanical contractor has removed all air from all hydronic systems.

3.3 PREPARATION

A. Prepare a T&B plan that includes:

1. Equipment and systems to be tested.

2. Strategies and step-by-step procedures for balancing the systems.

3. Instrumentation to be used.

4. Sample forms with specific identification for all equipment.



B. Prepare system-readiness checklists, as described in the AABC National Standards for Total System Balance, for use by contractors in verifying system readiness for T&B. These shall include, at a minimum:

1. Hydronics:

a. Piping is complete with all terminals installed.

b. Water treatment is complete.

c. Systems are flushed, filled and air purged.

d. Strainers are pulled and cleaned.

e. Control valves are functioning per the sequence of operation.

f. All shutoff and balance valves have been verified to be 100% open.

g. Pumps are started and proper rotation is verified.

h. Pump gauge connections are installed directly at the pump inlet and outlet flange or in discharge and suction pipe prior to any valves or strainers.

i. VFD start-up is complete and all safeties are verified.

j. Suitable access to balancing devices and equipment is provided.

3.4 GENERAL PROCEDURES FOR TESTING AND BALANCING

A. Perform testing and balancing procedures on each system according to the procedures contained in AABC's "National Standards for Total System Balance" and in this Section.

B. Cut insulation, ducts, pipes, and equipment cabinets for installation of test probes to the minimum extent necessary for T&B procedures.

C. Mark equipment and balancing devices, including damper-control positions, valve position indicators, fan-speed-control levers, and similar controls and devices, with paint or other suitable, permanent identification material to show final settings.

D. Take and report testing and balancing measurements in inch-pound (IP) units.

3.5 GENERAL PROCEDURES FOR HYDRONIC SYSTEMS

A. Prepare test reports for pumps, coils and heat exchangers. Obtain approved submittals and any manufacturer-recommended testing procedures. Crosscheck the summation of required coil and heat exchanger flow rates with pump design flow rate.

B. Verify that hydronic systems are ready for testing and balancing:

1. Check liquid level in expansion tank.

2. Check that makeup water-has adequate pressure to highest vent.

3. Check that control valves are in their proper position.

4. Locate start-stop and disconnect switches, electrical interlocks, and motor starters.

5. Verify that motor starters are equipped with properly sized thermal protection.

6. Check that air has been purged from the system.

3.6 PROCEDURES FOR CONSTANT-FLOW HYDRONIC SYSTEMS

A. Adjust pumps to deliver total design gpm.

1. Measure total water flow.



a. Position valves for full flow through coils.

b. Measure flow by main flow meter, if installed.

c. If main flow meter is not installed determine flow by pump total dynamic head (TDH) or exchanger pressure drop.

2. Measure pump TDH as follows:

a. Measure discharge pressure directly at the pump outlet flange or in discharge pipe prior to any valves.

b. Measure inlet pressure directly at the pump inlet flange or in suction pipe prior to any valves or strainers.

c. Convert pressure to head and correct for differences in gauge heights.

d. Verify pump impeller size by measuring the TDH with the discharge valve closed. Note the point on manufacturer's pump curve at zero flow and verify that the pump has the intended impeller size.

e. With all valves open, read pump TDH. Adjust pump discharge valve until design water flow is achieved.

3. Monitor motor performance during procedures and do not operate motor in an overloaded condition.

B. Adjust flow measuring devices installed in mains and branches to design water flows.

1. Measure flow in main and branch pipes.

2. Adjust main and branch balance valves for design flow.

3. Re-measure each main and branch after all have been adjusted.

C. Adjust flow measuring devices installed at terminals for each space to design water flows.

1. Measure flow at all terminals.

2. Adjust each terminal to design flow.

3. Re-measure each terminal after all have been adjusted.

4. Position control valves to bypass the coil and adjust the bypass valve to maintain design flow.

5. Perform temperature tests after all flows have been balanced.

D. For systems with pressure-independent valves at the terminals:

1. Measure differential pressure and verify that it is within manufacturer’s specified range.

2. Perform temperature tests after all flows have been verified.

E. For systems without pressure-independent valves or flow measuring devices at the terminals:

1. Measure and balance coils by either coil pressure drop or temperature method.

2. If balanced by coil pressure drop, perform temperature tests after all flows have been verified.

F. Verify final system conditions as follows:

1. Re-measure and confirm that total water flow is within design.

2. Re-measure all final pumps' operating data, TDH, volts, amps, static profile.

3. Mark all final settings.

G. Verify that all memory stops have been set.



3.7 PROCEDURES FOR VARIABLE-FLOW HYDRONIC SYSTEMS

A. Balance systems with automatic two- and three-way control valves by setting systems at maximum flow through heat-exchange terminals and proceed as specified above for hydronic systems.

B. Adjust the variable-flow hydronic system as follows:

1. Verify that the differential-pressure sensor is located per the contract documents.

2. Determine if there is diversity in the system.

C. For systems with no diversity:

1. Follow procedures outlined in "Procedures for Constant-Flow Hydronic Systems" Article.

2. Prior to verifying final system conditions, determine the system differential-pressure set point.

3. If the pump discharge valve was used to set total system flow with variable-frequency controller at 60 Hz, at completion open discharge valve 100 percent and allow variable-frequency controller to control system differential-pressure set point. Record pump data under both conditions.

4. Mark all final settings and verify that all memory stops have been set.

D. For systems with diversity:

1. Determine diversity factor.

2. Simulate system diversity by closing required number of control valves, as approved by the design engineer.

3. Follow procedures outlined in "Procedures for Constant-Flow Hydronic Systems" Article.

4. Open control valves that were shut. Close a sufficient number of control valves that were previously open to maintain diversity, and balance the terminals that were just opened.

5. Prior to verifying final system conditions, determine the system differential-pressure set point.

6. If the pump discharge valve was used to set total system flow with variable-frequency controller at 60 Hz, at completion open discharge valve 100 percent and allow variable-frequency controller to control system differential-pressure set point. Record pump data under both conditions.

7. Mark all final settings and verify that all memory stops have been set.

E. PROCEDURES FOR CHILLERS

1. Balance water flow through each evaporator [ and condenser] to within specified tolerances with all pumps operating per design sequence. Record the following data with each chiller operating at design conditions:

a. Evaporator-water entering and leaving temperatures, pressure drop, and water flow.

b. For water-cooled chillers, condenser-water entering and leaving temperatures, pressure drop, and water flow.

c. Power factor if shown on the chiller display panel.

d. Kilowatt input if shown on the chiller display panel.

e. Capacity: Calculate in tons of cooling.

f. For air-cooled chillers, verify condenser-fan rotation and record fan and motor data including number of fans and entering- and leaving-air temperatures.



F. PROCEDURES FOR COOLING TOWERS

1. Balance total condenser-water flows to the towers. Measure and record the following data:

a. Condenser-water flow to each cell of the cooling tower.

b. Entering- and leaving-water temperatures.

c. Wet- and dry-bulb temperatures of entering air.

d. Wet- and dry-bulb temperatures of leaving air.

e. Condenser-water flow through bypass.

f. Fan and motor operating data.

G. PROCEDURES FOR CONDENSING UNITS

1. Retain this article if using condensing units.

2. Verify proper rotation of fans.

3. Measure entering- and leaving-air temperatures.

4. Record fan and motor operating data.

H. TOLERANCES

1. Set HVAC system's water flow rates within the following tolerances:

a. Heating-Water Flow Rate: Plus or minus 10 percent.

b. Cooling-Water Flow Rate: Plus or minus 10 percent.

2. Maintaining pressure relationships as designed shall have priority over the tolerances specified above.

3.8 FINAL TEST AND BALANCE REPORT

A. The report shall be a complete record of the HVAC system performance, including conditions of operation, items outstanding, and any deviations found during the T&B process. The final report also provides a reference of actual operating conditions for the owner and/or operations personnel. All measurements and test results that appear in the reports must be made on site and dated by the AABC technicians or test and balance engineers.

B. The report must be organized by systems and shall include the following information as a minimum:

1. Title Page:

a. AABC certified company name

b. Company address

c. Company telephone number

d. Project identification number

e. Location

f. Project Architect

g. Project Engineer

h. Project Contractor

i. Project number

j. Date of report



k. AABC Certification Statement

l. Name, signature, and certification number of AABC TBE

2. Table of Contents.

3. AABC National Performance Guaranty.

4. Report Summary:

a. The summary shall include a list of items that do not meet design tolerances, with information that may be considered in resolving deficiencies.

5. Instrument List:

a. Type.

b. Manufacturer.

c. Model.

d. Serial Number.

e. Calibration Date.

6. T&B Data:

a. Provide test data for specific systems and equipment as required by the most recent edition of the "AABC National Standards."

C. One copy of the final test and balance report shall be sent directly to the Mechanical Engineer of record. Provide five additional copies to the contractor.

3.9 ADDITIONAL TESTS

A. Controls Verification

1. In conjunction with system balancing perform the following:

a. Work with the temperature control contractor to ensure the system is operating within the design limitations, and gain a mutual understanding of intended control performance.

b. Verify the integrity of valves and dampers in terms of tightness of close-off and full-open position. This includes dampers in multi-zone units.

c. Check that all valves are properly installed in the piping system in relation to direction of flow and location.

d. Verify the proper application of all normally open and normally closed valves.

e. Check the locations of all thermostats and humidistats for potential erratic operation from outside influences such as sunlight, drafts or cold walls.

f. Check the locations of all sensors to determine whether their position will allow them to sense only the intended temperatures, humidities, or pressures. Control Contractor will relocate as deemed necessary by the TAB Agency.

g. Check the sequence of operation for any control mode is in accordance with approved shop drawings. Verify that only minimum simultaneous heating and cooling occurs. Observe that heating cannot take place until the cooling zone of valve is completely closed.

h. Verify that all controller set points meet the design intent.

i. Verify the operation of all interlock systems.

j. Verify that controllers are calibrated and function as intended.



k. Verify that controller setpoints are as specified.

l. Verify the operation of lockout or interlock systems.

m. Verify the operation of all valve and damper actuators.

n. Verify that all controlled devices are properly installed and connected to the correct controller.

o. Verify that all controlled devices travel freely and are in the position indicated by the controller: open, closed, or modulating.

p. Perform all system verification to assure the safety of the system and its components.

2. Reporting

a. The report shall include a summary of verifications performed, remaining deficiencies, and any variations from specified conditions.

3. A systematic check of the above requirements shall be included in the final TAB report.

3.10 FINAL ACCEPTANCE

A. At the time of final inspection, the T&B Agency shall recheck, in the presence of the Owner’s Representative, specific and random selections of data, i.e. water and air quantities, recorded in the Certified Report.

B. Points and areas for recheck shall be selected by the Owner’s Representative.

C. Measurement and test procedures shall be the same as approved for work forming basis of Certified Report.

D. Selections for recheck, specific plus random, will not normally exceed 25% of the total number tabulated in the report, except that special air systems may require a complete recheck for safety reasons.

E. If random tests elicit a measured flow deviation of 10% or more from that recorded in the Certified Report listings, by 10% or more of the selected recheck stations, the report shall be automatically rejected. In the event the report is rejected, all systems shall be readjusted and tested, new data recorded, new Certified Report submitted, and new inspection tests made, all at no additional cost to the Owner.

F. Following final acceptance of the Certified Report by the Owner’s Representative the settings of all valves, splitters, dampers, and other adjustment devices shall be permanently marked by the T&B Agency, so that adjustment can be restored if disturbed at any time. Devices shall not be marked until after final acceptance.

END OF SECTION

Chabot College Central Plant Chiller Addition Chabot-Las Positas Community College District

Costa Engineers SECTION 23 0900 – CONTROLS FOR HVAC Project No. 17035 Page 1

SECTION 23 0900 CONTROLS

PART 1 GENERAL

1.1 GENERAL DESCRIPTION

A. The school has an existing “Alerton” DDC system already in place. The intent of these Specifications is to connect the new mechanical equipment as shown on the Drawings to the existing DDC.

B. Furnish a Microsoft Windows based Direct Digital Control System (DDCS) in accordance with this Specification Section. Items of work included are as follows.

1. Provide all necessary hardware and software to meet the specified functional requirements. 2. Prepare individual hardware layouts, interconnection drawings, and control loop

configuration data from project design data. 3. Implement the detailed design for all system input/output points, distributed control and

system data bases, graphic displays, logs, and management reports based on control descriptions, logic drawings, configuration data, and bid documents.

4. Design all equipment cabinets, panels, and the data communication network cables including all associated hardware.

5. Provide and install all cabinets, panels, and data communication network cables including all associated hardware.

6. Provide and install all interconnecting cables between supplied cabinets, controllers, and output devices.

7. Provide and install all interconnecting cables between all operator terminals and peripheral devices (such as printers, etc.) supplied under this section.

8. Provide complete specifications for all items supplied by the Vendor from others (such as printers, instruments, etc.).

9. Provide supervisory specialists and technicians at the job site to assist in all phases of system installation, start-up, and commissioning.

10. Provide a comprehensive operator and technician training program as described herein. 11. Provide as-built documentation, software, and all DDC control logic and all associated

support documentation on approved media that accurately represents the final system.

1.2 SYSTEM DESCRIPTION

A. General Requirements

1. Provide a Distributed Processing System complete with Direct Digital Control (DDC) and Direct Analog Control (DAC) software. This system is to control all specified equipment directly, without intervening conventional controls.

2. All DDC Controllers for Central mechanical equipment, and Windows based Operators' Terminal(s) shall communicate with each other and share information.

3. The Controls Contractor shall assume complete responsibility for the entire controls system as a single source and shall certify that he has on staff, under his direct employ, on a day to day basis, factory trained technical personnel, qualified to engineer, program, debug, and service all portions of the DDC control system, including central system Operators Terminal, Terminal Unit Controllers, and all other portions of the DDC control system.

B. Basic System Features:

1. Operator Terminal software on campus shall be utilized. 2. Complete energy management firmware, including self adjusting optimum start, demand

limiting, global control strategies and logging routines for use with total control systems. All energy management firmware shall be resident in field hardware and not dependent on the



Operators Terminal for operation. Operators Terminal software is to be used for access to field based energy management control firmware only.

3. Equipment monitoring and alarm function including information for diagnosing equipment problems.

4. The complete system including, but not limited to terminal unit controllers, Operator terminals shall Auto-restart, without operator intervention, on resumption of power after a power failure. Unitary controllers shall utilize EEPROM for all variable data storage. Batteries on unitary controllers shall not be allowed.

5. Modular system design of proven reliability. 6. Each field panel capable of independent control. 7. All software and/or firmware interface equipment for connection to remote monitoring

station from field hardware or the Operators Terminal. 8. Equipment runtime totalization of fans, heaters, boilers, etc., capable of alarm generation

and alarm dial out to remote sites. 9. Field control devices such as terminal unit controllers shall have optically isolated

communication lines. Controllers not optically isolated and utilizing a ground referenced communication technique are specifically prohibited.

10. Communication wiring for field control devices shall not be dependent on daisy chaining of communication wiring. Communication wire may be run in star patterns, daisy chained or combination of either, allowing units to be added to a communication line easily in the future.

11. All DDC hardware and software shall be designed and manufactured by U.S. corporations. All hardware shall be Listed Underwriters Laboratory for Open Energy Management Equipment (PAZX) under the UL Standard for Safety 916 in the US, with integral labels showing rating.

12. All hardware shall be in compliance with FCC Part 15, Subpart J, Class A.


A. Responsibility: The supplier of the DDCS shall be responsible for inspection and Quality Assurance (QA) for all materials and workmanship furnished by him.

B. Component Testing: Maximum reliability shall be achieved through extensive use of high-quality, pre-tested components. Each controller, sensor, and all other DDC components shall be individually tested by the manufacturer prior to shipment.

C. Tools, Testing, and Calibration Equipment: Provide all tools, testing and calibration equipment necessary to ensure reliability and accuracy of the DDCS.

1.4 REFERENCE STANDARDS

A. The latest edition of the following standards and codes in effect and amended as of date of Supplier's Proposal, and any subsections thereof as applicable, shall govern design and selection of equipment and material supplied:

1. ASHRAE American Society of Heating, Refrigerating and Air Conditioning Engineers 2. UBC Uniform Building Code, including local amendments 3. UL 916 Underwriters Laboratories Standard for Energy Management Equipment 4. NEC National Electrical Code

B. City, county, state, and federal regulations and codes in effect as of date of purchase.

C. Except as otherwise indicated, vendor shall secure and pay for all permits, inspections, and certifications required for his work and arrange for necessary approvals by the governing authorities.



1.5 SUBMITTALS

A. Drawings:

1. Within four weeks after award of contract, the Supplier shall submit review drawings, installation and operation instruction and a recommended spare parts list.

2. Drawings shall be standard sizes (24 inches x 36 inches) or (11 inches x 17 inches). 3. Provide three copies of submittal drawings.

B. System documentation by the Vendor shall include the following as a minimum:

1. System configuration diagrams in simplified block format. 2. Input/Output point and alarm point summary listing. 3. Electrical drawings showing all system internal and external connection points, terminal

block layouts and terminal identification. 4. Manufacturer's instructions and drawings for installation, maintenance and operation of all

purchased items. 5. Overall system operation and maintenance instructions, including preventive maintenance

and troubleshooting instructions. 6. Complete recommended spare parts list.

1.6 SCHEDULING AND COORDINATION

A. The Vendor shall provide a detailed project design and installation schedule with time markings and details for hardware items and software development phases.

B. The schedule shall show all the target dates for transmission of project information and documents and will indicate system installation, debug, and commissioning timing dates.

1.7 WARRANTY

A. Warranty shall cover all costs for parts, labor, and associated travel, and expenses for a period of one year from completion of system demonstration.

B. Hardware and software personnel supporting this warranty agreement shall provide on-site or off-site service in a timely manner after failure notification to the Vendor. The maximum acceptable response time to provide this service at the site shall be 24 hours.

C. This warranty shall apply equally to both hardware and software.

1.8 MANUFACTURER

A. Acceptable manufacturer for control system shall be Alerton Technologies, Inc.

B. Owner reserves the right to reject, at his option, all bids that do not meet the specified requirements stated.

PART 2 PRODUCTS

2.1 TERMINAL UNIT CONTROLLERS

A. General

1. Provide programmable and application specific Terminal Unit Controller as needed to comply with sequence of operation, point list, and drawings. All Terminal Unit Controller units shall be completely stand-alone with no loss of control if communication with global controller is interrupted. All control parameters, DDC programs and local variables such as setpoint information shall be stored in EEPROM on board each Terminal Unit Controller



allowing the operator to change information as desired. Controllers that utilize a battery to backup control parameters, etc., shall not be allowed.

2. All points on drawings, in sequence of operation and on point list shall be connected to and controlled by DDC units. No control shall be done by external devices such as thermostats or analog controls that are not part of the DDC system.

3. Programmable Terminal Unit Controllers shall be used in custom applications such as central plant, built up air handlers, fume hoods or when application specific controllers sequence of operation is not applicable.

4. Communication from Global controller to Terminal Unit Controllers shall be via two wire communication trunk as specified for Global Controllers above. Any type of Terminal Unit Controller shall communicate on the same communication trunk. System shall communicate to one Terminal Unit Controller regardless of whether other Terminal Unit Controllers on the same communication line are powered and connected. Ground referenced communications is prohibited.

5. Global controller shall communicate to all field controllers manufacturer has made in the past as well as currently.

B. Programmable Terminal Unit Controllers

1. Each programmable Terminal Unit Controller shall be completely programmable from the system terminal, via field computer or via remote communications. Program execution rate shall be ten times per second minimum (once every 100 milliseconds).

2. This controller shall be programmed to perform custom strategies for system based on information from all points in the field. Program that implements these strategies shall be completely flexible and user definable. Any controllers utilizing factory programmed strategies that cannot be modified by field personnel on site, require factory assistance, or cannot be downloaded via remote communications are not acceptable. Changing strategies via firmware changes is also unacceptable.

3. Programming shall be object oriented using program blocks familiar to control specialists for all program strategies. Provide documentation in flow chart form for all programming. Include samples of flow chart documentation in submittals. All flow charts shall be generated with CAD system and automatically downloaded to controller. No re-entry of database shall be necessary. As-Built documentation of all software shall be provided to end user in flow chart form at completion of project.

4. Program and program parameters such as set points shall be stored in EEPROM. Battery backed RAM shall not be accepted for this level of controller.

5. All inputs shall be universal in that they accept analog and digital information. Inputs shall be capable of detecting a 0.1 second momentary closure. Analog inputs shall be capable of accepting thermistor inputs, 0 to 5 VDC, 0 to 10 VDC, or 4 to 20 mA inputs. No external hardware shall need to be added for Terminal Unit Controller to accept these different types of inputs. All inputs shall utilize a minimum of 10-bit analog to digital conversion.

6. Every digital output shall have local status indication. Outputs shall have minimum control resolution of 0.1 seconds On or Off.

7. Each of the analog outputs shall be independently switch selectable to output 0 to 10 VDC or 4 to 20 mA. Unit shall be programmable to output a sub range of voltage or current to match the device controlled. Analog outputs shall use 8 bit digital to analog conversion.

8. Terminal Unit Controller may be programmed to control what is displayed on zone sensor display. See section 2.5. Terminal Unit Controller may be programmed to show alphanumeric values on zone sensor display in response to program changes or button presses on the zone sensor.

9. Each Terminal Unit Controller shall provide 24 VDC at 250 mA as a source of power for current transducer sensors in the field.

C. Application Specific Terminal Unit Controllers

1. Application Specific Terminal Unit Controllers shall be completely stand-alone controllers for unitary type controls such as VAV terminal boxes, heat pumps, AC units, unit ventilators, etc. All programs shall be resident in controller for complete stand-alone operation.



2. EEPROM technology shall be used for storage of program parameters such as set points, limits, etc. Controllers utilizing a battery for backup of program parameters shall not be allowed.

3. All application specific Terminal Unit Controller units shall have capability to use Digital display zone sensor, or thermistor type zone sensor as listed in section 2.5.

2.2 OPERATOR FIELD INTERFACE DEVICE

A. Hardware

1. Operator field interface shall communicate to global controller via RS-485 at 38.4K baud minimum. RS-232 port shall be available for reprogramming displays. This port shall be accessible without removing any covers from unit.

2. Provide minimum of 128K of nonvolatile RAM for display storage and 32K of EPROM. Battery shall retain memory for 30 days minimum.

3. Operator interface device shall be housed in plastic enclosure suitable for mounting in office area. Device shall be separate unit from global controller and mount on standard doublewide box.

B. Displays

1. Operator Terminal shall display all data associated with project as called out on drawings and/or point list supplied. Information shall be labeled with English description on display and shall be shown in engineering units as labeled (i.e. temperature shall be displayed in degrees F, 72.3F.) Terminal shall allow user to change all EMS functions associated with the project such as set points, time schedules, holiday schedules, etc. with single button push. This shall be done without any reference to point addresses or other numeric/mnemonic indications.

2. All displays shall be generated and customized in such a manner by local DDCS supplier that they fit the project as specified. No canned displays that are modifiable only by factory personnel shall be acceptable. Displays shall use standard English for labeling and readout.

3. Menu system shall be used for display selection. Menu items on display shall allow penetration to lower level displays. Dynamic point information and menu items may be mixed on the same display to allow sub displays to exist for each item. Each display may be protected from viewing unless operator has appropriate security level. Display security level may be assigned to each display.

4. All dynamic point information shall be updated every 1 second. Any changes by the operator shall be acted on by devices in the field within 1 second.

5. Cursor keys shall be used to move cursor to desired item for selection of new display or to allow the operator to make changes. Entry of name to view or change data shall not be necessary.

6. Displays may be modified on site or via remote communications.

C. Security System

1. Provide security system that prevents unauthorized use unless operator is logged on. Access shall be limited to operator terminal's functions unless user is logged on. This includes displays as outlined above.

2. Operator's Terminal shall access passwords from global controller that are user definable. Each password may have one of 10 security levels that define extent of access for operator once logged on with that password.

D. Schedules

1. Operator Terminal shall provide access to all scheduling in global controller. That is, time

schedules, event schedules and holiday schedules. Operator, after entering appropriate



password, shall be able to view and change schedules within local global controller or any other global controller connected via LAN network.

E. Alarm History

1. Operator Terminal shall display alarm history of any alarms that are routed to it. User may select which alarms are to be accepted by operator terminal for storage in battery backed RAM. Alarms may come from local global controller or any global controller on network. Alarms shall be viewed based on type of alarm received.

F. Energy Logs

1. Operator Terminal shall display daily energy consumption along with time and value of peak demand. In addition, display shall show outside air average temperature along with high and low outside air temperature for the day. Operator shall be able to select desired day to view information.

2.3 TEMPERATURE SENSORS

A. General (as required where not currently existing):

1. All temperature sensors to be solid state electronic, factory calibrated to within one-half degree F, interchangeable. Wall sensors to be housed in enclosure appropriate for application. Duct and well sensors to be electronically identical with housing appropriate for application. Provide appropriate wells for installation by others.

2. Provide Digital display zone sensor for all wall sensors unless indicated otherwise on drawings.

B. Digital Display Zone Temperature Sensor:

1. Sensor shall contain digital display and user function keys along with temperature sensor. Sensor shall function as occupant control unit. It shall allow occupant to raise and lower setpoint and activate terminal unit for night override use all within limits as programmed by building operator. Sensor shall also allow service technician access to terminal unit controller functions for use as system setup and test and service tool. Sensor shall display and allow modification of Terminal Unit Controller parameters. Systems that require a hand held field service tool shall not be allowed.

2. Provide means for occupant to view room setpoint, room temperature, and outside air temperature at each controller. Override time may be set and viewed in 0.1 hour increments. Override time count down shall be automatic, but may be reset to zero using function keys on unit. Display shall be blank in unoccupied mode unless a function button is pressed.

3. Display shall also be used for status and alarm indication as described in the sequence of operation.

C. Zone Temperature Sensor

1. Sensor shall contain override switch, electronic sensor, setpoint bias lever and jack for connection to Digital Display zone sensor for troubleshooting. The operator shall program the time of on after hours override operation from 0.0, no override, to 9.9 hours in 0. hour increments. Push buttons are to remain inactive until zone is in the after hours mode.

2. Setpoint bias shall be via labeled bias lever. Maximum bias shall be plus or minus 3 degrees F.

3. Override switch shall be located under sensor housing and shall not be visible to user.

2.4 OTHER SENSORS

A. Temperature Transmitters



B. Differential Pressure Transmitters

2.5 CONTROL DEVICES

A. Valves

B. Actuators

C. Relays and Signal Transmitters

PART 3 EXECUTION

3.1 EXAMINATION

A. Prior to starting work, carefully inspect installed work of other trades and verify that such work is complete to the point where work of this Section may properly commence.

B. Notify the Owners Representative in writing of conditions detrimental to the proper and timely completion of the work.

C. Do not begin work until all unsatisfactory conditions are resolved.

3.2 INSTALLATION (GENERAL)

A. Install in accordance with manufacturer's instructions.

B. Provide all miscellaneous devices, hardware, software, interconnections installation and programming required to insure a complete operating system in accordance with the sequences of operation and point schedules.

3.3 LOCATION AND INSTALLATION OF COMPONENTS

A. Locate and install components for easy accessibility; in general, mount 60 inches above floor with minimum 3'-0" clear access space in front of units. Obtain Owner Representative's approval on locations prior to installation.

B. All instruments, switches, transmitters, etc., shall be suitably wired and mounted to protect them from vibration and high temperatures.

C. Identify all equipment and panels. Provide permanently mounted tags to all panels.

D. Provide stainless steel or brass thermowells suitable for respective application and for installation under other sections; sized to suit pipe diameter without restricting flow.

3.4 INTERLOCKING AND CONTROL WIRING

A. Provide all interlocks and controls wiring. All wiring shall be installed in a neat and professional manner in accordance with Division 16 and all state and local electrical codes.

B. Provide wiring as required by functions as specified and as recommended by equipment manufacturers, to serve specified control functions.

C. Control wiring shall not be installed in power circuit raceways. Magnetic starters and disconnect switches shall not be used as junction boxes. Provide auxiliary junction boxes as required. Coordinate location and arrangement of all control equipment with the Owner's Representative prior to rough in.

D. Provide auxiliary pilot duty relays on motor starters as required for control function.

E. Provide power for all control components from nearest electrical control panel or as indicated on the electrical drawings. Coordinate with electrical contractor.



F. All controls wiring in the mechanical, electrical, telephone and boiler rooms to be installed in raceways. All other wiring to be installed in a neat and inconspicuous manner per local code requirements.

3.5 DDC POINT SUMMARY

A. Provide all Database generation.

B. Displays: System displays shall show all points in the system. They shall be logically laid out for ease of use by the owner. Provide outside air temperature indication on all system displays associated with economizer cycles.

C. Run time Totalization: At a minimum, run time totalization shall be incorporated for each monitored supply fan, return fan, exhaust fan, hot water and chilled water pumps. Warning limits for each point shall be entered for alarm and or maintenance purposes.

D. Trend Log: binary and analog points shall have the capability to be trended.

E. Alarm Points: All analog inputs (High/Low Limits) and selected digital input alarm points shall be prioritized and routed/auto-dial with alarm message per owner's requirements.

F. Database Save: Provide back-up database for all stand-alone DDC panels on floppy disk.

3.6 FIELD SERVICES

A. Prepare and start DDCS under provisions of this section.

B. Start-up and commission systems. Allow sufficient time for start-up and commissioning prior to placing control systems in permanent operation.

C. Provide the capability for off-site monitoring at Control Contractor's local or main office. At a minimum, off-site facility shall be capable of system diagnostics and software download. Owner shall provide telephone line for this service.

D. Provide Owner's Representative with spare parts list. Identify equipment critical to maintaining the integrity of the operating system.

3.7 TRAINING

A. Provide application engineer to instruct owner in operation of systems and equipment.

B. Provide basic operator training for a minimum of 3 persons on data display, alarm and status descriptors, requesting data, execution of commands and request of logs.

C. Provide training above as required up to 40 hours as part of this contract.

3.8 DEMONSTRATION

A. Provide systems demonstration per the requirements indicated in Section 23 0000.

B. Demonstrate complete and operating system to Owner's Representative.

C. Provide certificate stating that control system has been tested and adjusted for proper operation.

END OF SECTION 23 0900

Chabot College Central Plant AdditionChabot-Las Positas Community College District

Sonoma Electrical Engineering SECTION 26 00 00 ELECTRICALProject No. 17035 Page 1

SECTION 26 00 00

ELECTRICAL

PART 1 - GENERAL

1.01 SCOPE

A. Perform electrical work written and/or drawn in the Contract Documents.

B. The Contractor shall furnish electrical materials necessary to complete the work. He shallprovide required labor, transportation, equipment or services necessary to complete thework. When the work is finished, new and existing systems and equipment affected by thiswork shall be complete and operable to the satisfaction of the Engineer.

1.02 DEFINITIONS

A. Bidders: Bidders are persons or firms who submit a proposal for a prime contract with theowner, as distinct from a sub-bidder who submits a bid to a prime bidder. Bidders areseeking to become the contractor.

B. Bid Proposal: A bid proposal is submitted by a bidder as his offer to do the work in thecontract documents. When equipment is specified by brand name and number,substitutions shall not be used as the basis for formulating a cost to do the work. The biddermay offer costs for substitutions as an option, but the proposal must be based on thecontract documents. Options shall be clearly indicated as options, and their cost shall beseparately indicated.

C. Complete: Means that parts, labor, connections and procedures necessary to makesystems or equipment ready for operation as intended by the Engineer and/or themanufacturer of the system or equipment to be furnished.

D. Contract Documents:1. The Contract Documents are the drawings and specifications of participating divisions

which are mutually accepted by the owner and the contractor, when the contract isawarded, as the documents to be used for doing this work. They shall also includevendor drawings for this work and applicable standard published codes, rules andprocedures which are being enforced by agencies having jurisdiction on this project.

2. Refer to the drawings and specifications of participating divisions of the contractdocuments for additional work and responsibilities which may be part of the electricalwork. Electrical work is not necessarily limited to what is shown on the electricaldocuments. If other divisions specifically indicate certain work to be performed bythe electrical section, it shall be done by the electrical section.

E. Contractor: The term contractor in this specification means the person, Company orCorporation who enters into the primary contractual agreement with the owner to do thework in the Contract Documents. If the owner elects to oversee the project in the positionnormally held by a Contractor, then he shall be considered as the Contractor. Nothing inthis division shall be interpreted as relieving the contractor from his responsibility forcompletion of electrical work in the contract documents. The contractor is responsible forcompletion of the work even though he may engage the services of subcontractors to do theactual work.

F. Control Circuits: Circuits, of any voltage, which regulate or guide the operation of motorizedor electrified equipment, apparatus or a system.



G. Demolition: Means to remove and dispose of existing electrical equipment and relatedcircuits, raceways and supporting apparatus that are either replaced by new equipment orhave no further use because of this work. Disposal shall be done in an approved manner.

H. Diagrammatic: A general illustration which is not intended to indicate precise locations,unless specific dimensions are noted. Equipment locations are to be as close as possible towhere they are shown, but actual locations must be coordinated with other equipment andarchitectural or structural items.

I. Distribution Panelboard: A panelboard which can be wall mounted or floor standing such asa Square D I-Line or QED-2 type. These panels are not intended for service entranceunless indicated for that purpose in the contract documents. They are generally used as anintermediate means of distribution between switchboards and motor control centers orlighting panelboards.

J. Finished Areas: Interior areas of buildings, except shafts, plenums, mechanical andelectrical rooms and similar rooms containing fixed machinery or equipment such as a shopor garage.

K. Furnish: Means to furnish, install and connect, unless otherwise noted.

L. Lighting Panelboard: A panelboard containing a maximum of 42 branch circuit breakers orcircuit breaker spaces per compartment. This type of panelboard is generally wall mountedwith dimensions not exceeding 20 inches in width per compartment such as a Square DNQOD or NEHB type. These panelboards are not limited to serving lighting loads. Branchcircuit breakers generally do not exceed 100 amperes. These panelboards may containmultiple compartments if more than 42 circuits are required.

M. Major Material: Includes switchboards, distribution panelboards, lighting panelboards,transformers, motor control centers, lighting fixtures, conductors rated above 600 volts,generator sets, by-pass/transfer switches, fuel day tanks, bus duct, cable trays, ground faultequipment, motor starters, electrical equipment rated above 600 volts or other equipmentspecifically noted as requiring a submittal for review.

N. Manufacturer's Representative: A manufacturer's representative is a person who is eitheremployed directly by the manufacturer of the item or system in question, or he is dulyauthorized by the manufacturer to be his agent. In either case, he shall be thoroughlytrained in the technical skills required to set up and maintain the equipment. He shall alsobe able to test equipment and resolve questions and disputes arising from the use of theitem or system to the Engineer's)satisfaction.

O. Masculine Forms: When masculine forms of language are used in this specification, it shallbe understood that they include their feminine opposites when applicable.

P. Operational: Means equipment and systems are ready to perform in the manner intendedby the manufacturer of said equipment or systems to the (Architect's)(Engineer's)satisfaction.

Q. Owner: Means the person, Facility, Institution, Company, Corporation or GovernmentAgency, or their Authorized Agent who enters into the primary contractual agreement withthe contractor for this work.

R. Pre-Purchased Electrical Equipment: Equipment which is purchased by the Owner,independent of the Contractor. When so directed by the Contract Documents theContractor shall install and connect this equipment. He shall provide parts not included withthis equipment which are necessary for it to be electrically complete and operational.



S. Provide: Means to furnish, install and connect, unless otherwise noted.

T. Raceways: Steel conduit, electrical metallic tubing, flexible conduit, non-metallic conduitand similar materials shall be considered as raceways.

U. Serviceable: Means in useful condition.

V. Shop Drawings/Submittals: Means catalog information or custom drawings containinginformation that will enable Engineer to completely review proposed major material.

W. Subcontractor: The term subcontractor in this division means a person or firm who entersinto a subcontract agreement with the contractor to do certain portions of the work containedin the Contract Documents. A person or firm who enters into a subcontract agreement witha subcontractor is also a subcontractor.

X. Substitutions: A substitution is any equipment which is proposed to be used in lieu ofequipment which is specified in the contract documents by means of a manufacturer's nameand catalog number.

Y. Switchboard: A floor standing, 90-inch high enclosure for electrical devices with utilitycompany metering. It generally contains main overcurrent protection and distributionovercurrent devices. Switchboards are generally used as service entrance equipment.

1.03 EXAMINATION OF EXISTING CONDITIONS

A. It is mandatory that bidders for this work examine existing conditions at the site prior tosubmitting a bid proposal. Bidders shall thoroughly understand existing conditions whichcould affect this work and have a clear understanding of how they would do the work. Ifnecessary, bidders shall open and examine the existing electrical equipment to see what isthere, and understand how it will be changed. They shall investigate existing buildingconditions to understand how they would install raceways and equipment. They shall befamiliar with existing structural conditions and other obstacles which could affect this work.They shall ask questions and investigate systems to whatever extent is required toformulate an accurate proposal which covers the scope of work.

1.04 SUBMISSION OF BID PROPOSAL

A. Submission of a bid proposal by a bidder shall mean that he has reviewed the ContractDocuments and has visited the site to examine existing conditions. It shall also mean thathe has a thorough understanding of how he would accomplish the work and has included allcosts for material, labor, special equipment, and overtime in his proposal to do the work asspecified in the Contract Documents. Bidders are expected to base their bids per theContract Documents. Do not base bids on substitutions or an alternate method ofcompleting the work. The bidder's assumptions that alternate methods used in their bidswill be acceptable to the Engineer will not be grounds for additional money if they aresubsequently rejected. No extra costs shall be allowed for this work, unless authorized inwriting by the Engineer.

1.05 CONTRACT DOCUMENT REVIEW

A. Real or suspected conflicts between various divisions of the Contract Documents, anddiscrepancies within this division shall be reported to the Engineer for a corrective decisionbefore starting work. Do not order or install equipment affected by conflicting information.Do not make an independent decision without the (Architect's) (Engineer's) knowledge whenconflicting information exists.



B. Items not specifically mentioned in the Contract Documents, but which are necessary tomake a complete and operational installation shall be included.

C. The Drawings are diagrammatic and shall not be scaled to determine exact equipmentlocations or raceway distances. They shall be followed as closely as actual construction andthe work of other trades will permit. Coordination with other trades on this project isrequired.

1.06 SUBMITTALS

A. Preliminary Submittal: Within 30 days after award of the Contract and before any of thematerials of this section are delivered to the job site, submit 5 copies of catalog cuts,catalog numbers or descriptions, approximate external dimensions, and other generalinformation to identify the equipment. This information will enable the Engineer to reviewthe submittal for general conformance with the contract documents.

B. Shop Drawings: Within 90 days after the award of the Contract and before any of thematerials of this Section are delivered to the job site, submit 5 copies of complete ShopDrawings to the Engineer. The Shop Drawings shall include layouts, elevations, details, andmaterial lists for equipment and other descriptive data necessary to fully describe theequipment specified under this Section.

1.07 OPERATING AND MAINTENANCE DATA

A. Data shall be submitted to the Owner prior to acceptance of the installation, complete and atone time. Partial or separate data will not be accepted. Data shall consist of the followingminimum submissions:1. Manufacturer's Literature: Three (3) copies of manufacturer's instructions for

operation and maintenance of all electrical equipment, including replacement partslist.

2. Written Instruction: Typewritten instructions for operation and maintenance of thesystem composed of Operating Instructions and Maintenance Instructions. Three (3)copies submitted to the Owner for approval.a. Operating Instructions: A brief description of the system indicating proper

setting of switches and other equipment, furnished for the purpose of providingcontrol of the system and it's components by the operator. Adjustmentsrequiring the technical knowledge of the service agency personnel shall not beincluded in the operating instructions.

b. Maintenance instruction: A list of each item of electrical equipment requiringinspections, cleaning or services, describing the performance of suchmaintenance.

3. Verbal Instructions: Upon completion of the work, and at a time designated by theOwner, the Contractor shall instruct the Owner's representative in the operation andmaintenance of the equipment installed by the Contractor.

4. Binders: Three (3) complete sets of the above data in loose-leaf ring binders withpermanent covers with permanent identification on back and index.

1.08 GUARANTEES

A. Material furnished and installed to do this work shall be new and without defects. The workand materials shall be guaranteed for a period of one (1) year from the date of acceptanceof the work. If any trouble, related to this project, should develop during this period due todefective materials or faulty workmanship, the Contractor shall furnish materials and laborrequired to correct the trouble at his own expense and at no cost to anyone else. Defective



materials or inferior workmanship shall be corrected immediately to the completesatisfaction of the Engineer.

1.09 SCHEDULING THE WORK IN AREAS TO BE REMODELED

A. The Contractor shall submit his schedule of how the work will progress before he begins.His scheduling shall accommodate the Owner's activities and procedures. The scheduleshall show how he plans to perform changeovers one system at a time, if necessary, fromthe old systems to new systems and how he will keep the systems in operation during thesechangeovers. This work shall be accomplished at night or on weekends, if necessary, orwhenever it does not interfere with Owner's activities and procedures. The schedule shallbe approved by the (Owner) Engineer before the work begins.

B. No system shall be shutdown, transferred to temporary power or made inoperable by theContractor without specific written approval of the Owner or his Representative.

C. Temporary power shall be provided by the contractor for systems that cannot afford to bewithout power when an interruption is necessary. Temporary power shall be adequate forthe duration and electrical requirements of the task. Shutdowns and temporary power hook-ups shall not be attempted until all parts, equipment, and labor is readily available at the siteto do the specific task. Shutdown time shall be held to the time required to do the specifictask. In other words, don't start a task of this type and leave it interrupted until the next dayof work or until the parts arrive at the site.

1.10 MATERIALS & SUBSTITUTIONS

A. Material Substitutions: Materials furnished shall be listed by Underwriters' Laboratories(UL). Certain materials have been specified by brand name for the purpose of establishinga standard of quality, performance and appearance. The Contractor shall use specifiedmaterials whenever possible, unless there is clearly a good reason to substitute.

B. Contractor shall understand that the design reflects the approximate dimensions of specifiedequipment. Alterations to the building or field modifications to substituted equipment tomake it fit the space allowed for the specified equipment will not be permitted. Fieldmodifications which would void the manufacturer's UL or NEMA labels will not be permitted.Proposed modifications of any type must be reviewed with the Engineer before they arestarted.

C. Submittals shall include specific original catalog engineering data sheets or drawingsapplicable specifically to the item being proposed. Data shall clearly describe the material'sperformance characteristics, photometric information (if applicable), construction details,efficiency, visual appearance, dimensions, warranty, manufacturer's experience and abilityto provide fast, efficient and local service.

D. The burden of proof of equality or superiority of the substitution shall be upon the contractor.

E. Incomplete, illegible, inaccurate data or information not specifically pertinent to the materialbeing considered for substitution will be rejected.

F. A unit cost for each substitution being considered shall be included. If a cost savings will berealized by using the substitution instead of the specified item, a credit equal to thedifference shall be due to the Owner, if the substitution is allowed.

G. Failure to allow sufficient time for the manufacturer to fabricate or deliver the specifiedmaterials to the job site under normal working conditions or within a reasonable time periodmay not be an acceptable reason to substitute.



H. Substitutions which require the Engineer to do additional design, field work, or coordinationbetween parties involved with the change in equipment shall be cause for additionalcompensation from the contractor at the standard office rates of the firm(s) required to dothe work.

I. Additional costs, whether architectural, structural, mechanical, electrical or any othersystem, caused by the substitution of materials, equipment or the installation thereof shallbe the burden of the contractor or his subcontractors who do the substituting. Such costsshall not be passed on to anyone else, unless written permission to the contrary isspecifically given for each incident by the Engineer .

1.11 PERMITS AND INSPECTIONS

A. The Contractor shall obtain and pay for required permits and arrange for inspectionsrequired to execution of the work under this contract.

1.12 LAWS, ORDINANCES, REGULATIONS, AND CODES

A. Applicable laws, ordinances and regulations shall be considered as part of the ContractDocuments. Work shall be performed in accordance with the latest requirements adoptedby agencies and authorities having jurisdiction over this project. These may include, but notbe limited to:1. California Code of Regulations Title 82. California Code of Regulations Title 193. California Code of Regulations Title 224. California Code of Regulations Title 235. California Code of Regulations Title 246. California Electric Code, Part 3 (CEC)7. California Building Code, Part 2 (CBC)8. California Fire Code, Part 9 (CFC)9. California Mechanical Code, Part 4 (CMC)10. California Plumbing Code (CPC)11. National Fire Protection Association (NFPA) Standards12. OSHA and CAL-OSHA13. California State Fire Marshal14. Underwriters Laboratories (UL)15. National Electrical Manufacturers Association (NEMA)16. Office of Statewide Health Planning and Development (OSHPD)17. OSHPD Fire Marshal18. Institute of Electrical and Electronic Engineers (IEEE)19. American National Standards Institute (ANSI)20. American Society for Testing Materials (ASTM)21. Division of the State Architect (DSA)

1.13 AS-BUILT DRAWINGS

A. The Contractor shall maintain a daily record of the electrical work as it progresses. Uponcompletion of this project, changes, additions or deletions from the bid documents, which hehas performed, shall be recorded on a clean, unmutilated set of transparencies. Said itemsmust be clear, legible and understandable by the Engineer . They shall accurately illustratethe electrical system as it was installed. Accuracy and completeness are mandatory prior toacceptance of the work by the Engineer.

1.14 WORK INCLUDED



A. Perform all electrical work covered by the Contract Documents.

1.15 WORK NOT INCLUDED

A. Furnishing control circuits, their raceways and specific devices such as starters, relays, etc.for any equipment, unless otherwise specifically noted in this division or other divisions tobe furnished by the electrical division.

1.16 DEPARTURES FROM PLANS

A. No departures from contract documents shall be permitted without written approval of theEngineer.

B. Approved departures which require additional drawings, job site inspections or publicationsfrom the Engineer or shall be billable at standard hourly rates and/or material costs of theEngineer or to the initiator of the departure.

C. No person, except the Engineer, shall direct the Contractor to make changes, additions ordeletions from the contract documents.

1.17 EXISTING EQUIPMENT DISPOSAL

A. Existing electrical equipment which is removed due to demolition and is not to be reinstalledshall be disposed of by the Contractor in a manner approved by authorities having suchjurisdiction. The Contractor shall verify that the Owner does not want to retain any of thisequipment prior to destroying it and hauling it away.

1.18 EXISTING UTILITIES

A. The Contractor shall investigate and determine the locations of existing utilities that may beaffected by this work. He shall take all reasonable precautions to avoid damage orinterruptions to these systems. If damage or interruptions do occur due to this work theyshall be repaired as directed by the Engineer . The Contractor shall pay for costs resultingfrom said damage and interruptions.

1.19 MATERIAL PURCHASES

A. No materials shall be ordered or purchased for this project until the Contract Documentshave been approved by all authorities governing this work.

PART 2 - PRODUCTS

2.01 Components installed in factory-assembled switchboards, panelboards, motor controlcenters and similar types of equipment shall be standard items listed in the publishedcatalog of the equipment manufacturer. For example; General Electric shall utilize GeneralElectric components. Do not mix components of different companies to assembleequipment, unless approval has been obtained prior to fabrication of the equipment.

PART 3 - EXECUTION

3.01 GENERAL



A. Carefully investigate work to be accomplished by other trades prior to doing work in thisdivision. Review the submittals of other divisions for related work and verify that work inthis division can be properly installed.

B. Good workmanship shall be evidenced in the installation of all electrical materials andequipment. Equipment shall be level, plumb and true with the structure and otherequipment; also in a horizontal or vertical position as intended. All materials shall be firmlysecured in place and adequately supported and permanent. Materials embedded inconcrete or masonry or otherwise part of the structure are considered sufficiently supported.All hardware and accessory fittings shall be of a type designed, intended and appropriate forthe use and complement the items with which they are used.

C. All materials and equipment including any hangers, supports, fastenings or accessoryfittings shall have corrosion protection suitable for the atmosphere in which they areinstalled whether located indoors or outdoors. Care shall be taken during the installation toassure the integrity of corrosion protection.

D. All screws, bolts, nuts, clamps, fittings or other fastening devices shall be made up tight. Allbolts, screws, nuts and other threaded devices shall have standard threads and heads sothey may be installed and replaced when necessary without special tools.

E. All anchors and fasteners shall be of a type designed for the purpose and capable ofadequately and safely securing the material. Selection shall be based on the amount andtype of load, base material, safe working load and atmosphere.

F. In addition to the weight of the material consideration shall also be given to vibration, suchas with motors or fans; variable loading resulting from internal or external forces, such asoperation of safety switches or circuit breakers; and shock load, when such is possible.

G. The anchor or fastener used shall be of a type designed and intended for use in the basematerial to which the material or support is to be attached. Generally, screws are used onwood, masonry anchors on concrete or brick, toggle bolts or similar on hollow walls,machine screws, bolts or welded studs on steel. Nails are normally used only for temporarysupport or for light loads in wood frame construction.

H. To assure adequacy and safety, consideration must be given to the rated holding power ofthe anchors or fastening devices used and recognized safety factors. Rated holding powermay vary depending upon the base material in which the device is used.

I. Permanence and good appearance, a part of good workmanship, require that considerationbe given to the type of atmosphere surrounding anchors and fasteners. Anchors andfasteners shall be non-corrosive or have suitable corrosive resisting coatings or treatment.Weather conditions must be considered for outdoor locations but there are also indoorlocations that may be wet or damp. Fumes from industrial processing also may causecorrosive atmospheres. The possibility of corrosion due to dissimilar metals must also be aconsideration.

J. Hangers and supports shall be used to properly and firmly support electrical materials orequipment in a safe and permanent manner. They may be catalog items or fabricated inthe shop or on the job site. They shall be of a type designed or appropriate for the purpose,have a neat and finished appearance and complement the installation.

K. Job fabricated hangers and supports shall be made from standard structural shapes andhardware or systems of shapes, fittings and hardware designed for the purpose. All bolts,screws, nuts and other threaded devices shall have standard threads and heads so that they



do not require special tools and may be readily replaced when necessary. All threads shallbe fully engaged and all parts made up tight.

L. The selection of hangers and supports shall be based upon the following criteria:1. Amount and type of load.2. Safe working load.3. Atmosphere.

M. The weight of the hanger or support must be considered as part of the total load. The totalload also includes the materials within an enclosure. For example, the weights of theconductors in a raceway or junction or pull box shall be added to the load of the raceway orbox. External forces such as vibration, operation of equipment such as switch handles orpossible shock load also shall be considered. Safe working load shall be determined byapplying recognized safety factors to the rated strength of the complete assembly and shallbe based on the weakest component member.

N. Hangers and supports, whether catalog items or job fabricated, shall have corrosionprotection suitable for the atmosphere in which they are installed either indoors or outdoors.This corrosion protection applies to all components of the assembly. Care must be taken toprevent corrosion that might result from the use of dissimilar metals in damp or wetlocations.

O. Hangers and supports shall be adequately and safely attached to the building structure orstructural member.

P. The equipment or materials to be supported shall be securely fastened to the supportingmeans with material suitable for the purpose.

3.02 TESTS

A. A final overall test of the complete electrical system will be required after completion of thetests specified in each Section of Division 16. The Contractor shall notify the Engineerwhen he is ready to make the test and describe the test procedure.

B. Upon approval of the test procedure and at a time designated by the Engineer, theoperating test shall be conducted to demonstrate to the satisfaction of the Engineer that thecomplete system operates in accordance with the Contract Documents.

C. Equipment malfunctions or deviations in performance discovered during the test orthereafter shall be corrected to the satisfaction of the Engineer. The test shall be repeatedin total until it is satisfactory.

**END OF SECTION 26 00 00**


Sonoma Electrical Engineering SECTION 26 05 19LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLE

Project No. 17035 Page 1

SECTION 26 05 19

LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES

PART 1 - GENERAL

1.01 DESCRIPTION

A. Scope: The Contractor shall furnish conductors providing power for feeders and branch circuits

at less than 600 volts, unless noted otherwise on the Drawings or in the Specifications.


A. Standards: Conductors shall conform to applicable requirements of:

1. The Underwriter's Laboratories, Inc. (UL).

2. The American National Standards Institute (ANSI).

3. The National Electrical Manufacturer's Association (NEMA).

4. Federal Specifications.

5. Insulated Cable Engineers Association (ICEA).

1.03 PRODUCT HANDLING

A. In the event of conductor damage, the Contractor shall make the necessary replacement.

Repairs which would result in "in conduit" splices will not be allowed.

PART 2 - PRODUCTS

2.01 CONDUCTORS (600 VOLTS AND BELOW)

A. Wire and cable shall be new and shall have size, type of insulation, voltage rating and

manufacturer's name permanently marked on outer covering at regular intervals. Wire and

cable shall be factory color-coded by integral pigmentation.

B. Wire shall conform to UL 83 and ANSI C33.8 standards, Federal Specifications JC 30A. Use

THHN type of insulation on feeders and branch circuits, unless a different type of insulation is

required by the CEC or an agency having jurisdiction over this work.

C. The copper conductor shall have a 90 percent minimum conductivity and shall be stranded,

unless otherwise noted. Minimum wire size shall be No 12 AWG, unless noted otherwise.

D. Conductors shall be factory color coded as per NEMA WC05 and/or ICEA Publications S-61-420

Standards.

E. Bare ground conductors shall meet Federal Specification QQ-W-343.

F. Type AF insulated conductors shall be used in fluorescent fixtures where high temperatures will

be encountered.

G. Non-metallic sheathed cable may be used in areas permitted by the CEC, if approved by the

local inspector and not prohibited by other parts of the specifications.

2.02 TERMINATIONS




A. Terminations shall conform to the following specifications:

1. Electrical spring steel connectors with UL approved insulating caps shall be used on #10

AWG and smaller stranded or solid copper conductors where splicing is required.

2. Ring or fork type copper terminators with application by a special crimping tool shall be

used on #10 AWG and smaller conductors for terminating, except when terminated into

circuit breakers or wiring devices with built-in spring clips.

3. For conductors #8 AWG and larger, all splices and/or terminations shall be solderless long

barrel color keyed compression types for application with a hydraulic tool.

4. Connectors shall be certified as meeting UL 486 cycling test requirements.

5. Wire markers shall be White PVC tubular type with black letter and/or numbers with an

internal oval shaped wire gripper.

6. Insulated tape shall conform to UL 510 and ANSI C33.74 standards.

PART 3 - EXECUTION

3.01 INSTALLATION OF CONDUCTORS

A. Conductors shall not be subjected to pulling tensions in excess of manufacturer's

recommendations.

B. Conductors shall be continuous from point to point. No splices shall be permitted, except in

splice boxes or enclosures approved for this purpose.

C. Raceways shall be dry and thoroughly cleaned prior to installation of conductors.

D. Conductors shall be neatly arranged where terminated at equipment and/or panelboards so that

a clamp-on ammeter can be easily inserted for load checks.

E. Conductors shall be tagged at each end with tubular markers. A schedule shall be provided on

the As-Built Drawings correlating the wire markings.

F. Installation of the grounded (neutral) conductors shall comply with Article 200 and 210.5 of the

CEC, except that insulation is required on the conductor.

G. Installation and connection of equipment grounding conductors shall be per Article 210.5 and

250.1 of the CEC.

H. Use THHN insulated conductors in all lighting and power circuit raceways per Table 310.16 of

the CEC, unless otherwise noted.

I. Conductors shall be rated for an ampacity equal to the overcurrent device that feeds them. It is

not acceptable under any circumstances to remove strands of wire from stranded conductors to

make them fit terminations. The use of correctly sized lugs shall be required.

J. Conductor color coding shall conform to standards of the industry for the system voltage.

K. Conductors terminated in equipment shall always be installed Phase A, Phase B and Phase C

from left to right or top to bottom respectively.

L. Conductors connected to circuit breakers, fused switches and bus bars in switchboards,

panelboards, transformers, and motor control centers shall be readily identifiable at their

connection points using one half inch wide plastic tape in the color specified above for the

applicable voltage and phase concerned.




M. No conductor carrying 120 volts or more shall be smaller than #12 AWG.

N. Non-metallic sheathed cable installed above ceilings shall be supported independent of the

ceiling. Do not lay cable on the ceiling.

O. Wire and cable shall be suitable for the temperature, conditions and location where it is installed.

Accessory materials, such as connectors, splice and tap fittings and terminations shall be of a

type designed or intended and suitable for the use. They shall be compatible with the conductor

material.

P. Wire and cables shall be installed so as not to damage the insulation or cable sheath. All

conductors to be installed in a raceway shall be pulled together. They shall be trained and

guided into the raceway using a pulling compound or lubricant when necessary. A means of

communication between the pulling and guiding points shall be used to facilitate installation and

to help prevent damage. The pulling means, fish tape, cable or rope, shall be of a type that will

not damage the raceway.

Q. Cables that are installed exposed shall be run parallel and perpendicular to the surface or

exposed structural members and follow the surface contours as much as practical. Running

boards shall be used where necessary to provide sufficient support and a neat installation. Care

shall be taken to provide sufficient mechanical protection for exposed cables.

R. All wires and cables, whether exposed, concealed or in raceways, shall be sufficiently supported

using devices intended for the purpose when necessary. Conductors shall not be supported by

their terminations.

S. Conductor splices shall be kept to a minimum. Splices and taps shall have at least the

equivalent mechanical strength and insulation as the conductors. Splice and tap devices shall

be of the proper size and type for the use and compatible with the conductor material.

T. The length of conductors within cabinets and cutout boxes shall be sufficient to neatly train the

conductor to the terminal point with no excess. When there are many conductors, they shall be

cabled or bundled.

U. Terminations shall be made so that there is no bare conductor at the terminal. The conductor

insulation shall bear against the terminal or connector shoulder.

V. Conductors shall be identified with a means that is neat, legible and permanent. This may be by

a clearly lettered or typed directory in panelboard cabinets or by use of tags, pressure sensitive

tape or cable ties.

3.02 TESTING (600 VOLT OR LESS)

A. Tests shall be conducted with a 500 volt megger with readings recorded after continuous voltage

application of one minute. Values shall not run less than the following:

1. No. 14 or No 12 AWG - 1 Megohm

2. No. 10 thru No. 6 AWG - 1/4 Megohm

3. No. 4 or No. 2 AWG - 50 K Ohms

4. No 1/0 thru 4/0 AWG - 25 K Ohms

5. 250 MCM thru 750 MCM - 12 K Ohms

B. Tests conducted with a ground megger between the ground bus and absolute earth shall not

produce resistance readings in excess of 5 Ohms.




**END OF SECTION 26 05 19**


Sonoma Electrical Engineering SECTION 26 05 19 RACEWAY AND BOXES FOR ELECTRICAL SYSTEMS


SECTION 26 05 33

RACEWAY AND BOXES FOR ELECTRICAL SYSTEMS

PART 1 - GENERAL

1.1 DESCRIPTION

A. Scope:

1. Furnish conduits, electrical metallic tubing and fittings for all power, lighting, mechanical

equipment and signal systems shown on the Drawings and as specified herein, unless

noted elsewhere in these specifications under "Work Not Included".

2. Furnish outlet boxes for wiring devices, lighting fixtures and other electrical equipment.

3. Furnish junction boxes and pullboxes as required for the consolidation of conduit runs and

to aid in pulling in conductors.


A. Standards: All conduit, tubing, and fittings shall conform to applicable requirements of:

1. The Underwriter's Laboratories, Inc. (UL)

2. Joint Industry Council Standards (JIC)

3. The American National Standards Institute (ANSI)

4. The National Electrical Manufacturer's Association (NEMA)

5. Federal Specifications

6. The serving utilities

1.3 PRODUCT HANDLING

A. If any conduits or tubing are damaged, the Contractor shall make necessary repairs and

replacements as directed by the Engineer. The Contractor shall bear any costs for this.

1.4 INTENT OF DRAWINGS

A. Exact conduit and tubing locations are not shown unless specifically dimensioned or noted. One-

line and riser diagrams are schematic and do not show physical arrangement of equipment,

unless specifically noted.

PART 2 - PRODUCTS

2.1 CONDUITS AND TUBING

A. Rigid Metallic Conduit (RMC): Shall be hot-dip galvanized steel including threads as per UL 6,

Federal Specifications WWC-581-D and ANSI C80-1.

B. Electrical Metallic Tubing (EMT): Shall be electrolytically galvanized steel per UL 797 and ANSI

C33.98.

C. Liquid Tite Flexible Metal Conduit: Shall be electrolytically galvanized steel per UL 1 and ANSI

C33.92 and covered with polyvinyl chloride (PVC) to JIC requirements.

D. Flexible Metal Conduit: Shall be electrolytically galvanized steel per UL 1 and ANSI C33.92.




E. Rigid Nonmetallic Conduit (PVC) Schedule 40: Shall be polyvinyl chloride (PVC) as required per

UL 651, Federal Specifications WC-1094A and NEMA Standards Publication No. TC2-1978.

F. Rigid Nonmetallic Conduit (PVC) Schedule 80: Shall be polyvinyl chloride (PVC) as required by

UL 651, Federal Specifications WC-1094A and NEMA Standards Publication No. TC2-1978.

G. P & C Duct Type DB (for Direct Burial): Shall comply with NEMA Standard TC-8, DB-120/ASTM

F512, heavy wall.

H. P & C Duct Type EB (for Concrete Encased Installations): Shall comply with NEMA Standard

TC-8. EB-35/ASTM F512, heavy wall.

2.2 FITTINGS

A. General: Elbows, couplings, connectors and other fittings shall be of the same material as the

conduit they are used with unless otherwise noted. They shall be manufactured in conformance

with the standard for the conduit and/or per UL 514.

B. Electrical Metallic Tubing Fittings: Couplings and insulated throat connectors shall be concrete

tight compression type. Set screw fittings are not acceptable.

C. Condulets: Shall be cast copper free aluminum and/or ferrous material with corrosion resistant

finish per UL 514.

2.3 METAL OUTLET BOXES

A. Outlet boxes shall be sized for the application. Boxes shall be equipped with plaster rings orcovers when required. Units shall be pressed from galvanized steel. Gangable and through-walltypes are not acceptable.

B. Outlet boxes for wet and exposed locations shall be cast metal type FS units with gasketedcovers.

2.4 METAL JUNCTION AND PULLBOXES

A. Junction and pullboxes shall be fabricated from 16 gauge or heavier galvanized sheet steel witha grey enamel finish, except where mounting surfaces are a different color. Paint to match inthose cases. Full access flush or surface screw covers shall be furnished as required. Coverretention shall be by corrosion resistant machine screws. Box size shall be per CEC Article 314.

PART 3 - EXECUTION

3.1 INSTALLATION OF CONDUIT AND TUBING

A. The following Raceways and Fitting Types shall be used in a particular area:

1. Use electrical metallic tubing in interior dry locations whether exposed or concealed. Do

not bury in the earth or install in or through concrete. Do not use in areas exposed to

weather or subject to physical abuse.

2. Use rigid metallic conduit for exterior exposed locations and for transitions from buried

non-metallic conduits when they rise through concrete floors. Use when conduits are cast

inside of concrete walls and floors. Use when penetrating concrete walls. Use in areas

which may be subjected to high abuse. Use for penetrations through fire rated walls,




floors, and ceilings. Conduit penetrations through fire rated walls, floors and ceilings shall

be in accordance with U.L. approved systems made for this purpose.

3. Use rigid non-metallic Schedule 40 conduit for conduits buried in the earth. Buried conduit

used for hospital work shall be one of the following types if an emergency system is

involved:

a. Rigid galvanized steel conduit

b. PVC Schedule 40 encased in 2 inches of concrete

c. PVC Schedule 80 without concrete encasement.

4. Use P & C type db duct for utility company services buried in the earth.

5. Use flexible metal conduit for connections to recessed lighting fixtures in ceilings and roof

overhangs. Use it for connections to vibrating equipment in interior dry, non-corrosive

locations, except when a cord connection is specified.

6. (Do not use flexible metal conduit, electrical non-metallic tubing, armored cable, metal

clad cable, rigid non-metallic conduit, flexible metallic tubing or liquid tight flexible conduit

for general wiring in the building.)

7. (Flexible metal conduit, electrical non-metallic tubing, armored cable, metal clad cable, or

flexible metallic tubing may be used on this project for general wiring if approved for the

application by the CEC and local inspector.)

8. Use liquidtight flexible metal conduit for connections to vibrating or moving equipment in

wet and corrosive areas.

B. Installation Methods:

1. Flexible metallic conduit shall have a minimum length of 18 inches. Maximum length

shall not exceed 6 feet. Provide with a ground wire per CEC requirements. Minimum

inside diameter shall be 1/2 inch.

2. PVC Schedule 40 or 80 conduit shall be provided with expansion joints per manufacturer's

recommendations. Bends 30 degrees or larger shall be factory fabricated. Small bends

may be field formed with approved heating equipment. Joint solvent shall be applied only

to conduit, not to fittings.

3. Rigid metallic conduit in contact with the earth shall be assembled with red leaded joints

and be wrapped with 10 mil tape and coated with No. 50 bitumastic compound.

4. A minimum of 6-inches clearance shall be maintained between all electrical conduits and

any piping, ducts or objects operating at temperatures over 86 degrees Fahrenheit.

5. Only threaded fittings shall be used with rigid metallic conduit. Such fittings shall provide

a minimum of 5 thread engagement. Field cut threads shall be coated with zinc rich paint.

6. Install conduit per CEC and conceal wherever possible and/or practical. Rigid metal

conduit and EMT, installed exposed shall be mounted on supports spaced as required by

the CEC. Runs shall be parallel or perpendicular to walls, ceilings, or structural members.

7. Supports for conduit shall be fastened by wood screws on wood, toggle bolts on hollow

masonry, machine screws on metal, expansion shields on concrete or brick. Wooden

plugs, fiber or plastic inserts, or nails are not acceptable.

8. Direct buried conduits shall not be smaller than 3/4", but shall conform to the sizes and

capacities given in the CEC. Underground conduit shall be permanently identified at each

end with permanent PVC markers readily visible from above grade.

9. Underground conduit work shall be coordinated with other underground construction work.

Duct banks shall not be installed in fill areas until finish grade is established and 90

percent compaction achieved. Backfilling of trench shall not be accomplished until

conduit emplacement has been inspected by the Engineer. Trenches containing conduits

shall be backfilled with compacted sand. The sand shall be flooded with water around the

conduits so they are firmly supported by the sand. The conduits shall be installed in

layers, where necessary, and separated from other layers with 6" of flooded sand.

10. Every conduit or tubing containing energized conductors and installed as part of this work

shall contain a green insulated copper equipment grounding conductor sized in




accordance with CEC. Under no circumstances shall conduits or tubing alone be used as

an equipment ground conductor. If large conductors are used as equipment grounds and

they are not available with green colored insulation, they shall be marked with green

plastic tape at all terminations and pullboxes to identify them as grounding conductors.

11. Conduit or metallic tubing installed above wood framed ceilings and where trusses occur

shall be firmly fastened to the wood framing or trusses.

12. Conduit or metallic tubing installed above suspended ceilings shall be supported

independently from the ceiling system in an approved manner to the building structure.

Such conduits or tubing shall be installed in a manner that does not interfere with access

to the space. Do not attach or support these conduits or tubing from the ceiling support

system.

13. Types of conduits or electrical metallic tubing to be installed through fire rated walls, floors

or ceilings shall be determined by the UL system number of the fire rated sealant selected

for the project. The instructions for a particular UL system number should specify what

type of conduit can be used with the fire sealant to create an acceptable system. Do not

assume that something will be acceptable; consult with the project inspector and the

product installation instruction before doing the work. The hourly rating of the surface to

be penetrated should determine the UL system to be used.

14. Conduit and electrical metallic tubing in finished areas shall always be installed concealed

from view in walls, above ceilings, or below floors. If there is insufficient space in ceilings,

walls or floors to conceal conduit or electrical metallic tubing consult with the Engineer to

determine an acceptable method of doing the work prior to doing it.

15. Hangers and supports shall be of a type compatible with and suitable for the intended use.

They may be catalog items or job fabricated. Consideration must be given to the weight

of the enclosed conductors when selecting supports and fastening means. Care shall be

taken to prevent the entrance of foreign matter into raceways and they shall be cleaned if

necessary before pulling in conductors.

16. Stub-ups shall be protected from damage and carefully re-bent when necessary. Bends

and offsets shall be carefully made so that the inside diameter is not effectively reduced.

Unless otherwise required, the legs of a bend shall be in the same plane, the straight legs

of offsets are parallel.

17. All raceway fittings shall be of a type compatible with the raceway and suitable for the use

and location.

18. Concealed raceways shall be run with a minimum of bends in the shortest practical

distance considering the type of building construction and obstructions.

19. Raceways placed in slab construction shall occupy the middle third when practical and

leave at least 3/4 inch concrete cover. They shall be tied to the reinforcing rods or

otherwise supported when necessary to prevent sagging when concrete is poured. They

shall be laterally spaced to allow complete coverage.

20. Exposed raceways shall be run parallel and perpendicular to the surface or exposed

structural members and follow the surface contours as much as practical to present a neat

appearance.

21. Exposed parallel or banked raceways shall be run together to provide a neat appearance.

Bends in parallel or banked runs shall be made from the same center line so that the

bends are parallel. Factory elbows in banked runs may be used when they can be

installed parallel. This shall require that there be a change in the plane of the run such as

from wall to ceiling and the raceways be of the same size. In other cases, parallel

raceways shall be field bent.

22. Raceways shall be joined with fittings designed for the purpose and shall be made tight.

Where the installation situation is such that joints cannot be made tight, bonding jumpers

shall be used to provide electrical continuity of the raceway system. Raceway

terminations shall be made up tight. When terminations are subject to vibration, bonding




bushings or wedges shall be used to assure electrical continuity. When subject to

vibration or dampness, insulating bushing shall be used to protect the conductor.

23. When raceways are terminated with locknuts and bushings, the raceway shall enter

squarely and the locknuts shall be installed so that the dished part is against the box. Two

locknuts, one inside and the other outside the box, shall be used to facilitate the

termination or to make it more secure when necessary.

24. When terminating in threaded hubs the raceway or fitting shall be screwed tight into the

hub so that the end bears against the wire protection shoulder. When chase nipples are

used, the raceway and coupling shall be square to the box and the chase nipple tightened

with no exposed threads.

3.2 OUTLET BOXES

A. Location of outlets shown is approximate. Exact location shall be verified on the job to avoid

conflict with other work.

B. Blanking covers shall be installed on unused openings.

C. Boxes shall be securely set in place with appropriate fasteners.

D. Boxes shall have sufficient volume per CEC Article 314 to accommodate conductors, and fittings

if used.

E. Outlet boxes shall be of a type appropriate for the use and location. They shall be securely and

rigidly attached or supported plumb, level and true. Outlet box supports, hangers or brackets

when used shall be of a type designed or suitable for the type of box used and the building

structural member to which attached. In determining the type of support or fastener,

consideration must be given to the load caused by any device or equipment, such as lighting

fixtures, which are in turn supported by the outlet box.

F. Outlet boxes and their covers shall have corrosion protection suitable for the atmosphere in

which they are installed. Where necessary, gaskets shall be used to prevent the entrance of

moisture. Outlet boxes shall be protected to prevent entrance of plaster, and debris shall be

thoroughly cleaned from the box before the conductors are installed.

G. Generally, outlet boxes for switches shall be mounted with the long axis vertical. Boxes for

receptacles shall be mounted either vertically or horizontally but consistent either way. Three or

more gang boxes shall be mounted with the long axis horizontal. The boxes shall be so located

that the covers or device plates will not span different types of building finishes either vertically

or horizontally. Boxes for switches near doors shall be located on the side opposite the hinge

and close to the door trim.

H. Covers for outlet boxes shall be of a type designed, intended and appropriate for the use and

location and have suitable corrosion protection. Device plates shall not be used as covers for

exposed installations.

3.3 JUNCTION AND PULLBOXES

A. Junction and pull boxes shall be used where necessary to facilitate the installation of raceway

and pulling of wire or cable. Consideration shall be given to the size and number of conductors,

number of bends in the raceway, change in direction of the raceway or conductors and the need

for support of conductors in vertical raceways. They shall be of a type intended or suitable for




the use and location. They may be catalog items or custom designed and fabricated to meet the

particular requirements.

B. Junction and pull boxes including hinges or screws used to fasten the cover shall have corrosion

protection suitable for the atmosphere in which they are installed.

C. Junction and pull boxes shall be firmly and securely fastened to or supported from the building

structure or structural member. In determining the type of fastener, hanger or support,

consideration must be given to the load caused by any conductors supported by the box and any

load that might be caused by external forces. Knockouts for raceways enclosing the same

conductors shall be arranged to provide the longest sweep or radius for the conductors. See

table for raceway spacings.

D. Covers for large junction or pull boxes, larger than 6 square feet (864 square inches) should be

sectionalized to facilitate removal and replacement. When the cover is sectionalized, cross

bracing shall be provided to fasten the sections of the cover at the seams.

E. Junction and pullboxes shall be readily accessible.

F. Box dimensions shall be in accordance with size and quantity of conductors and conduits

entering and leaving the box per CEC Article 314 requirements.

G. Pullboxes shall be provided at least every 100 feet on straight conduit runs. If the run contains

three or more 90 degree angle bends the distance between boxes shall be reduced by 50 feet or

less for each 90 degree angle bend over three.

H. Boxes shall be firmly mounted to building structures.

END OF SECTION 26 05 33

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