MASTERSPEC Full Length

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1 Copyright 2005 AIA MASTERSPEC Full Length SECTION GENERAL-DUTY VALVES FOR PLUMBING PIPING 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. 1.2 SUMMARY A. Section Includes: 1. Bronze ball valves. 2. Bronze swing check valves. DEFINITIONS CWP: Cold working pressure. EPDM: Ethylene propylene copolymer rubber. NBR: Acrylonitrile-butadiene, Buna-N, or nitrile rubber. NRS: Nonrising stem. OS&Y: Outside screw and yoke. RS: Rising stem. SWP: Steam working pressure. 1.4 SUBMITTALS A. Product Data: For each type of valve indicated. 1.5 QUALITY ASSURANCE A. Source Limitations for Valves: Obtain each type of valve from single source from single manufacturer. B. ASME Compliance: 1. ASME B and ASME B for ferrous valve dimensions and design criteria. 2. ASME B3 1.1 for power piping valves. GENERAL-DUTY VALVES FOR PLUMBING PIPING

2 Copyright 2005 AIA MASTERSPEC Full Length 3. ASME B31.9 for building services piping valves. C. NSF Compliance: NSF 61 for valve materials for potable-water service. 1.6 DELIVERY, STORAGE, AND HANDLING A. Prepare valves for shipping as follows: 1. Protect internal parts against rust and corrosion. 2. Protect threads, flange faces, grooves, and weld ends. 3. Set ball valves open to minimize exposure of functional surfaces. 4. Block check valves in either closed or open position. B. Use the following precautions during storage: 1. Maintain valve end protection. 2. Store valves indoors and maintain at higher than ambient dew point temperature. If outdoor storage is necessary, store valves off the ground in watertight enclosures. PART 2 - PRODUCTS 2.1 GENERAL REQUIREMENTS FOR VALVES A. Refer to valve schedule articles for applications of valves. B. Valve Pressure and Temperature Ratings: Not less than indicated and as required for system pressures and temperatures. C. Valve Sizes: Same as upstream piping unless otherwise indicated. D. Valve Actuator Types: 1. Handlever: For quarter-turn valves NPS 6 and smaller. E. Valves in Insulated Piping: With 2-inch stem extensions and the following features: 1. Ball Valves: With extended operating handle of non-thermal-conductive material, and protective sleeve that allows operation of valve without breaking the vapor seal or disturbing insulation. 2.2 BRONZE BALL VALVES A. Two-Piece, Full-Port, Bronze Ball Valves with Bronze Trim: 1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: GENERAL-DUTY VALVES FOR PLUMBING PIPING

3 Copyriglit 2005 AIA MASTERSPEC Full Length 2. Description: American Valve, Inc. Conbraco Industries, Inc.; Apollo Valves. Crane Co.; Crane Valve Group; Crane Valves. Harnmond Valve. Lance Valves; a division of Advanced Thermal Systems, Inc. Legend Valve. Milwaukee Valve Company. NIBCO INC. Red-White Valve Corporation. Watts Regulator Co.; a division of Watts Water Technologies, Inc. Standard: MSS SP-110. SWP Rating: 150 psig. CWP Rating: 600 psig. Body Design: Two piece. Body Material: Bronze. Ends: Threaded. Seats: PTFE or TFE. Stem: Bronze. Ball: Chrome-plated brass. Port: Full. 2.3 BRONZE SWING CHECK VALVES A. Class 150, Bronze Swing Check Valves with Bronze Disc: 1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: a. Crane Co.; Crane Valve Group; Jenkins Valves. b. Crane Co.; Crane Valve Group; Stockham Division. c. Kitz Corporation. d. Milwaukee Valve Company. e. NIBCO INC. f. Red-White Valve Corporation. 2. Description: a. Standard: MSS SP-80, Type 3. b. CWP Rating: 300 psig. c. Body Design: Horizontal flow. d. Body Material: ASTM B 62, bronze. e. Ends: Threaded. f. Disc: Bronze. GENERAL-DUTY VALVES FOR PLUMBING PIPING

4 Copyright 2005 AIA MASTERSPEC Full Length 2.4 IRON, SINGLE-FLANGE BUTTERFLY VALVES A. 200 CWP, Iron, Single-Flange Butterfly Valves with EPDM Seat and Aluminum-Bronze Disc: 1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: a. Crane Co.; Crane Valve Group; Jenkins Valves. b. Crane Co.; Crane Valve Group; Stockham Division. c. Kitz Corporation. d. Legend Valve. e. Milwaukee Valve Company. f. NIBCOINC. g. Red-White Valve Corporation. 2. Description: a. Standard: MSS SP-67, Type I. b. CWP Rating: 200 psig. c. Body Design: Lug type; suitable for bidirectional dead-end service at rated pressure without use of downstream flange. d. Body Material: ASTM A 126, cast iron or ASTM A 536, ductile iron. e. Seat: EPDM. f. Stem: One- or two-piece stainless steel. g. Disc: Aluminum bronze. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine valve interior for cleanliness, freedom fi-om foreign matter, and corrosion. Remove special packing materials, such as blocks, used to prevent disc movement during shipping and handling. B. Operate valves in positions from fully open to fully closed. Examine guides and seats made accessible by such operations. C. Examine threads on valve and mating pipe for form and cleanliness. D. Examine mating flange faces for conditions that might cause leakage. Check bolting for proper size, length, and material. Verify that gasket is of proper size, that its material composition is suitable for service, and that it is free from defects and damage. E. Do not attempt to repair defective valves; replace with new valves. GENERAL-DUTY VALVES FOR PLUMBING PIPING

5 Copyright 2005 AIA MASTERSPEC Full Length VALVE INSTALLATION Install valves with unions or flanges at each piece of equipment arranged to allow service, maintenance, and equipment removal without system shutdown. Locate valves for easy access and provide separate support where necessary. Install valves in horizontal piping with stem at or above center of pipe. Install valves in position to allow full stem movement. Install check valves for proper direction of flow and as follows: 1. Swing Check Valves: In horizontal position with hinge pin level. ADJUSTING Adjust or replace valve packing arer piping systems have been tested and put into service but before final adjusting and balancing. Replace valves if persistent leaking occurs. GENERAL REQUIREMENTS FOR VALVE APPLICATIONS If valve applications are not indicated, use the following: 1. Shutoff Service: Ball, valves. 2. Pump-Discharge Check Valves: a. NPS 2 and Smaller: Bronze swing check valves with bronze. b. NPS 2-1/2 and Larger for Domestic Water: Iron swing check valves with lever and weight or with spring or iron, center-guided, metal or] resilient-seat check valves. If valves with specified SWP classes or CWP ratings are not available, the same types of valves with higher SWP classes or CWP ratings may be substituted. Select valves, except wafer types, with the following end connections: 1. For Copper Tubing, NPS 2 and Smaller: Threaded ends except where solder-joint valveend option is indicated in valve schedules below. DOMESTIC, HOT- AND COLD-WATER VALVE SCHEDULE Pipe NPS 2 and Smaller: 1. Bronze Valves: May be provided with solder-joint ends instead of threaded ends. 2. Ball Valves: Two piece, full port, bronze with bronze trim. 3. Bronze Swing Check Valves: Class 150, bronze disc. Pipe NPS 2-1/2 and Larger: GENEW-DUTY VALVES FOR PLUMBING PIPING

6 Copyright 2005 AIA MASTERSPEC Full Length 09/05 1. Iron Valves, El% 2-li2 to NPS 4: May be provided with threaded ends instead of flanged ends. 2. Iron Ball Valves: Class Iron, Single-Flange Butterfly Valves: 200 CWP, EPDM seat, aluminum-bronze disc. END OF SECTION GENERAL-DUTY VALVES FOR PLUMBING PIPING

7 Copyright 2008 AIA MASTERSPEC Full Length SECTION DOMESTIC PIPING 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. 1.2 SUMMARY A. Section Includes: 1. Domestic water pipes, tubes, fittings, and specialties inside the building. 2. Specialty valves. 3. Flexible connectors. 1.3 QUALITY ASSURANCE A. Piping materials shall bear label, stamp, or other markings of specified testing agency. B. Comply with NSF 61 for potable domestic water piping and components. 1.4 PROJECT CONDITIONS? A. Interruption of Existing Water Service: 1. Notify Designer, Construction Manager, and Owner no fewer than 5 days in advance of proposed interruption of water service. PART 2 - PRODUCTS 2.1 PIPING MATERIALS A. Comply with requirements in "Piping Schedule" Article for applications of pipe, tube, fitting materials, and joining methods for specific services, service locations, and pipe sizes. 2.2 COPPER TUBE AND FITTINGS A. Hard Copper Tube: ASTM B 88, Type L water tube, drawn temper. 1. Cast-Copper Solder-Joint Fittings: ASME B 16.18, pressure fittings. 2. Wrought-Copper Solder-Joint Fittings: ASME B16.22, wrought-copper pressure fittings. DOMESTIC WATER PIPING

8 Copyright 2008 AIA MASTERSPEC Full Length 12/08 3. Bronze Flanges: ASME B16.24, Class 150, with solder-joint ends. 4. Copper Unions: MSS SP-123, cast-copper-alloy, hexagonal-stock body, with ball-andsocket, metal-to-metal seating surfaces, and solder-joint or threaded ends. 5. Copper Press Fittings: a. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1) Elkhart Products Corporation; Industrial Division. 2) NIBCO INC. 3) Viega; Plumbing and Heating Systems. b. NPS 2 and Smaller: Wrought-copper fitting with EPDM-rubber O-ring seal in each end. c. NPS 2-1/2 to NPS 4: Cast-bronze or wrought-copper fitting with EPDM-rubber O-ring seal in each end. B. Soft Copper Tube: ASTM R 88, Type L water tube, annealed temper. 1. Copper Solder-Joint Fittings: ASME B16.22, wrought-copper pressure fittings. 2. Copper Pressure-Seal-Joint Fittings: a. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1) Elkhart Products Corporation; Industrial Division. 2) NIBCOINC. 3) Viega; Plumbing and Heating Systems. b. NPS 2 and Smaller: Wrought-copper fitting with EPDM-rubber O-ring seal in each end. c. NPS 3 and NPS 4: Cast-bronze or wrought-copper fitting with EPDM-rubber O- ring seal in each end. 2.3 PIPING JOINING MATERIALS A. Pipe-Flange Gasket Materials: AWWA Cl10, rubber, flat face, 118 inch thick or ASME B 16.21, nonmetallic and asbestos free, unless otherwise indicated; full-face or ring type unless otherwise indicated. B. Metal, Pipe-Flange Bolts and Nuts: ASME B18.2.1, carbon steel unless otherwise indicated. C. Solder Filler Metals: ASTM B 32, lead-free alloys. Include water-flushable flux according to ASTM B 813. DOMESTIC WATER PIPING

9 Copyrigllt 2008 AIA MASTERSPEC Full Length 2.4 INSULATION MATERIALS A. Mineral-Fiber, Preformed Pipe Insulation: 1. Products: Subject to compliance with requirements, available products that may be incorporated into the Work include, but are not limited to, the following: a. Fibrex Insulations Inc.; Coreplus b. Johns Manville; Micro-Lok. c. Knauf Insulation; 1000-Degree Pipe Insulation. d. Manson Insulation Inc.; Alley-K. e. Owens Corning; Fiberglas Pipe Insulation. 2. Type 1, 850 Deg F Materials: Mineral or glass fibers bonded with a thermosetting resin. Comply with ASTM C 547, Type I, Grade A, with factory-applied AS J. 2.5 SPECIALTY VALVES A. Comply with requirements in Division 22 Section "General-Duty Valves for Plumbing Piping" for general-duty metal valves. 2.6 TRANSITION FITTINGS A. General Requirements: 1. Same size as pipes to be joined. 2. Pressure rating at least equal to pipes to be joined. 3. End connections compatible with pipes to be joined. B. Fitting-Type Transition Couplings: Manufactured piping coupling or specified piping system fitting. C. Sleeve-Type Transition Coupling: AWWA C DIELECTRIC FITTINGS A. General Requirements: Assembly of copper alloy and ferrous materials with separating nonconductive insulating material. Include end connections compatible with pipes to be joined. B. Dielectric Unions: 1. Description: a. Standard: ASSE b. Pressure Rating: 150 psig. c. End Connections: Solder-joint copper alloy and threaded ferrous. C. Dielectric Flanges: DOMESTIC WATER PIPING

10 Copyright 2008 AIA MASTERSPEC Full Length 1. Description: a. Standard: ASSE b. Factory-fabricated, bolted, companion-flange assembly. c. Pressure Rating: 150 psig. d. End Connections: Solder-joint copper alloy and threaded ferrous; threaded solderjoint copper alloy and threaded ferrous. 2.8 PRESSURE GAGES A. Direct-Mounted, Metal-Case, Dial-Type Pressure Gages: 1. Standard: ASME B Case: Liquid inch nominal diameter. 3. Pressure-Element Assembly: Bourdon tube unless otherwise indicated. 4. Pressure Connection: Brass, 5. ASME B pipe threads and bottom-outlet type unless back-outlet type is indicated. 6. Movement: Mechanical, with link to pressure element and connection to pointer. 7. Dial: Nonreflective aluminum with permanently etched scale markings graduated in [psi. 8. Pointer: Dark-colored metal. 2.9 FILLED-SYSTEM THERMOMETERS A. Direct-Mounted, Metal-Case, Vapor-Actuated Thermometers: 1. Standard: ASME B Case: Sealed type, cast aluminum or drawn steel; 5-inch nominal diameter. 3. Element: Bourdon tube or other type of pressure element. 4. Movement: Mechanical, dampening type, with link to pressure element and connection to pointer. 5. Dial: Nonreflective aluminum with permanently etched scale markings graduated in deg F. 6. Pointer: Dark-colored metal. 7. Window: Glass or plastic. 8. Ring: Metal. PART 3 - EXECUTION 3.1 PIPING INSTALLATION A. Drawing plans, schematics, and diagrams indicate general location and arrangement of domestic water piping. Indicated locations and arrangements are used to size pipe and calculate friction loss, expansion, and other design considerations. B. Install shutoff valve immediately upstream of each dielectric fitting. DOMESTIC WATER PIPING

11 Copyright 2008 AIA MASTERSPEC Full Length 12/08 C. Install piping adjacent to equipment and specialties to allow service and maintenance. D. Install piping to permit valve servicing. E. Install nipples, unions, special fittings, and valves with pressure ratings the same as or higher than system pressure rating used in applications below unless otherwise indicated. F. Install piping free of sags and bends. G. Install fittings for changes in direction and branch connections. H. Install unions in copper tubing at final connection to each piece of equipment, machine, and specialty. I. Install thermostats in hot-water circulation piping. J. Install thermometers on outlet piping from each water heater. 3.2 GENERAL INSTALLATION REQUIREMENTS A. Install insulation materials, accessories, and finishes with smooth, straight, and even surfaces; free of voids throughout the length of piping including fittings, valves, and specialties. B. Install insulation materials, forms, vapor barriers or retarders, jackets, and thicknesses required for each item of pipe system as specified in insulation system schedules. C. Install accessories compatible with insulation materials and suitable for the service. Install accessories that do not corrode, soften, or otherwise attack insulation or jacket in either wet or dry state. D. Install insulation with longitudinal seams at top and bottom of horizontal runs. E. Install insulation with tight longitudinal seams and end joints. Bond seams and joints with adhesive recommended by insulation material manufacturer. F. Install insulation with least number of joints practical. G. Where vapor barrier is needed seal joints, seams, and penetrations in insulation at hangers, supports, anchors, and other projections with vapor-barrier mastic. 1. Install insulation continuously through hangers and around anchor attachments. 2. For insulation application where vapor barriers are indicated, extend insulation on anchor legs from point of attachment to supported item to point of attachment to structure. Taper and seal ends at attachment to structure with vapor-barrier mastic. 3. Install insert materials and install insulation to tightly join the insert. Seal insulation to insulation inserts with adhesive or sealing compound recommended by insulation material manufacturer. 4. Cover inserts with jacket material matching adjacent pipe insulation. Install shields over jacket, arranged to protect jacket from tear or puncture by hanger, support, and shield. DOMESTIC WATER PIPING

12 Copyright 2008 AIA MASTERSPEC Full Length 12/08 Apply adhesives, mastics, and sealants at manufacturer's recommended coverage rate and wet and dry film thicknesses. Repair damaged insulation facings by applying same facing material over damaged areas. Extend patches at least 4 inches beyond damaged areas. Adhere, staple, and seal patches similar to butt joints. JOINT CONSTRUCTION Ream ends of pipes and tubes and remove burrs. Bevel plain ends of steel pipe. Remove scale, slag, dirt, and debris from inside and outside of pipes, tubes, and fittings before assembly. Threaded Joints: Thread pipe with tapered pipe threads according to ASME B Cut threads full and clean using sharp dies. Ream threaded pipe ends to remove burrs and restore full ID. Join pipe fittings and valves as follows: 1. Apply appropriate tape or thread compound to external pipe threads. 2. Damaged Threads: Do not use pipe or pipe fittings with threads that are corroded or damaged. Soldered Joints: Apply ASTM B 8 13, water-flushable flux to end of tube. Join copper tube and fittings according to ASTM B 828 or CDA's "Copper Tube Handbook." Pressure-Sealed Joints: Join copper tube and pressure-seal fittings with tools recommended by fitting manufacturer. Copper-Tubing Grooved Joints: Roll groove end of tube. Assemble coupling with housing, gasket, lubricant, and bolts. Join copper tube and grooved-end fittings according to AWWA C606 for roll-grooved joints. Flanged Joints: Select appropriate asbestos-free, nonmetallic gasket material in size, type, and thickness suitable for domestic water service. Join flanges with gasket and bolts according to ASME B Dissimilar-Material Piping Joints: Make joints using adapters compatible with materials of both piping systems. VALVE INSTALLATION General-Duty Valves: Comply with requirements in Division 22 Section "General-Duty Valves for Plumbing Piping" for valve installations. DIELECTRIC FITTING INSTALLATION Install dielectric fittings in piping at connections of dissimilar metal piping and tubing. Dielectric Fittings for NPS 2 and Smaller: Use dielectric couplings or nipples. DOMESTIC WATER PIPING

13 Copyrigllt 2008 AIA MASTERSPEC Full Length 3.6 HANGER AND SUPPORT INSTALLATION A. Install hangers for copper tubing with the following maximum horizontal spacing and minimum rod diameters: 1. NPS 3/4 and Smaller: 60 inches with 3/8-inch rod. 2. NPS 1 and NPS 1-114: 72 inclies with 318-inch rod. 3. NPS 1-li2 and WS 2: 96 inches with 3/8-inch rod. 4. NPS 2-1/2): 108 iilcles with 1 i2-inch rod. 5. NPS 3 to NPS 5: 10 feet with 1/2-inch rod. 6. B. Support piping and tubing not listed in this article according to MSS SP-69 and manufacturer's written instructions. 3.7 INDOOR PIPING INSULATION SCHEDULE A. Domestic Cold Water, Domestic Hot and Recirculated Hot Water: 1. NPS I and Smaller: Insulation shall be one of the fol1owing:retain one or more of five subparagraphs below. a. Flexible Elastomeric: 1 inch thick. b. Mineral-Fiber, Preformed Pipe Insulation, Type I: 1 inch thick. 2. NPS 1-1/4 and Larger: Insulation shall be one of the following: a. Flexible Elastomeric: 1 inch thick. b. Mineral-Fiber, Preformed Pipe Insulation, Type I: 1 inch thick. 3.8 FIELD QUALITY CONTROL A. Perform tests and inspections. B. Piping Inspections: 1. Do not enclose, cover, or put piping into operation until it has been inspected and approved by authorities having jurisdiction. 2. During installation, notify authorities having jurisdiction at least one day before inspection must be made. Perform tests specified below in presence of authorities having jurisdiction: a. Roughing-in Inspection: Arrange for inspection of piping before concealing or closing-in after roughing-in and before setting fixtures. b. Final Inspection: Arrange final inspection for authorities having jurisdiction to observe tests specified below and to ensure compliance with requirements. 3. Reinspection: If authorities having jurisdiction find that piping will not pass tests or inspections, make required corrections and arrange for reinspection. DOMESTIC WATER PIPING

14 Copyright 2008 AIA MASTERSPEC Full Length 12/08 4. Reports: Prepare inspection reports and have them signed by authorities having jurisdiction. C. Piping Tests: 1. Fill domestic water piping. Check components to determine that they are not air bound and that piping is full of water. 2. Test for leaks and defects in new piping and parts of existing piping that have been altered, extended, or repaired. If testing is performed in segments, submit a separate report for each test, complete with diagram of portion of piping tested. 3. Leave new, altered, extended, or replaced domestic water piping uncovered and unconcealed until it has been tested and approved. Expose work that was covered or concealed before it was tested. 4. Cap and subject piping to static water pressure of 50 psig (345 Ha) above operating pressure, without exceeding pressure rating of piping system materials. Isolate test source and allow to stand for four hours. Leaks and loss in test pressure constitute defects that must be repaired. 5. Repair leaks and defects with new materials and retest piping or portion thereof until satisfactory results are obtained. 6. Prepare reports for tests and for corrective action required. D. Domestic water piping will be considered defective if it does not pass tests and inspections. E. Prepare test and inspection reports. 3.9 CLEANING A. Clean and disinfect potable[ and non-potable] domestic water piping as follows: 1. Purge new piping and parts of existing piping that have been altered, extended, or repaired before using. 2. Use purging and disinfecting procedures prescribed by authorities having jurisdiction; if methods are not prescribed, use procedures described in either AWWA C651 or AWWA C652 or follow procedures described below: a. Flush piping system with clean, potable water until dirty water does not appear at outlets. b. Fill and isolate system according to either of the following: 1) Fill system or part thereof with waterlchlorine solution with at least 50 ppm of chlorine. Isolate with valves and allow to stand for 24 hours. 2) Fill system or part thereof with waterlchlorine solution with at least 200 ppm of chlorine. Isolate and allow to stand for three hours. c. Flush system with clean, potable water until no chlorine is in water coming from system after the standing time. d. Submit water samples in sterile bottles to authorities having jurisdiction. Repeat procedures if biological examination shows contamination. B. Clean non-potable domestic water piping as follows: DOMESTIC WATER PIPING

15 Copyright 2008 AIA MASTERSPEC Full Length 12/08 1. Purge new piping and parts of existing piping that have been altered, extended, or repaired before using. 2. Use purging procedures prescribed by authorities having jurisdiction or; if methods are not prescribed, follow procedures described below: a. Flush piping system with clean, potable water until dirty water does not appear at outlets. b. Submit water samples in sterile bottles to authorities having jurisdiction. Repeat procedures if biological examination shows contamination. C. Prepare and submit reports of purging and disinfecting activities. D. Clean interior of domestic water piping system. Remove dirt and debris as work progresses. END OF SECTION DOMESTIC WATER PIPING

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17 Copyrigl~t 2008 AIA MASTERSPEC Full Length SECTION FUEL-FIRED, DOMESTIC-WATER HEATERS 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. 1.2 SUMMARY A. Section Includes: 1. Commercial, grid-type, finned-tube, gas-fired, domestic-water heaters. 2. Domestic-water heater accessories. 1.3 PERFORMANCE REQUIREMENTS A. Seismic Performance: Commercial domestic-water heaters shall withstand the effects of earthquake motions determined according to ASCEISEI The term "withstand" means "the unit will remain in place without separation of any parts from the device when subjected to the seismic. 1.4 SUBMITTALS A. Product Data: For each type and size of domestic-water heater indicated. Include rated capacities, operating characteristics, electrical characteristics, and furnished specialties and accessories. B. Shop Drawings: 1. Wiring Diagrams: For power, signal, and control wiring. C. Product Certificates: For each type of commercial, gas-fired domestic-water heater, from manufacturer. D. Domestic-Water Heater Labeling: Certified and labeled by testing agency acceptable to authorities having jurisdiction. E. Operation and Maintenance Data: For fuel-fired, domestic-water heaters to include in emergency, operation, and maintenance manuals. F. Warranty: Sample of special warranty. FUEL-FIRED, DOMESTIC-WATER HEATERS

18 Copyright 2008 AIA MASTERSPEC Full Lel~gth 1.5 QUALITY ASSURANCE A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. B. ASHRAEIIESNA 90.1 Compliance: Fabricate and label fuel-fired, domestic-water heaters to comply with ASHRAEIIESNA C. ASME Compliance: 1. Where ASME-code construction is indicated, fabricate and label commercial, finnedtube, domestic-water heaters to comply with ASME Boiler and Pressure Vessel Code: Section IV. D. NSF Compliance: Fabricate and label equipment components that will be in contact with potable water to comply with NSF 61, "Drinking Water System Components - Health Effects." 1.6 COORDINATION A. Coordinate sizes and locations of concrete bases with actual equipment provided. 1.7 WARRANTY A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace components of fuel-fired, domestic-water heaters that fail in materials or workmanship within specified warranty period. 1. Failures include, but are not limited to, the following: a. Structural failures including storage tank and supports. b. Faulty operation of controls. c. Deterioration of metals, metal finishes, and other materials beyond normal use. 2. Warranty Periods: From date of Substantial Completion. a. Commercial, Finned-Tube, Gas-Fired, Domestic-Water Heaters: 1) Heat Exchanger: Five years. 2) Controls and Other Components: One. 3) Separate Hot-Water Storage Tanks: Five years. PART 2 - PRODUCTS 2.1 COMMERCIAL, FINNED-TUBE, GAS-FIRED, DOMESTIC-WATER HEATERS A. Commercial, Grid-Type, Finned-Tube, Gas-Fired, Domestic-Water Heaters: FUEL-FIRED, DOMESTIC-WATER HEATERS

19 Copyright 2008 AIA MASTERSPEC Full Lengtli 03/08 1. Manufacturers: Subject to compliance with requirements, provide products by one of the following: a. CAMUS Hydronics Ltd. b. Laars Heating Systems Company; a subsidiary of Bradford White Corporation. c. Lochinvar Corporation. d. RBI Water Heaters; a Mestek company. 2. Standard: ANSI for hot-water-supply boilers. 3. Description: Packaged unit with boiler, storage tank, pump, piping, and controls. 4. Boiler Construction: ASME code with 160-psig working-pressure rating for hot-waterboiler-type, domestic-water heater. a. Heat Exchanger: Stainless Steel. 5. Boiler Appurtenances: a. Insulation: Comply with ASHRAEIIESNA Surround entire boiler except connections and controls. b. Jacket: Steel with enameled finish. c. Automatic Ignition: ANSI Z21.201CSA C22.2 No. 199, intermittent electronicignition system. d. Temperature Control: Adjustable, storage-tank temperature-control fitting and flow switch, interlocked with circulator and burner. e. Safety Control: Automatic, high-temperature-limit cutoff device or system. 6. Support: Steel base or skids. 7. Hot-Water Storage Tank: Connected with piping to circulating pump and domestic-water heater. a. Construction: According to ASME Boiler and Pressure Vessel Code: Section VIII, steel with 150-psig working-pressure rating. b. Tappings: Factory fabricated of materials compatible with tank. Attach tappings to tank before testing. 1) NPS 2 and Smaller: Threaded ends according to ASME B ) NPS and Larger: Flanged ends according to ASME B16.5 for steel and stainless-steel flanges and according to ASME B16.24 for copper and copper-alloy flanges. c. Interior Finish: Comply with NSF 61 barrier materials for potable-water tank linings, including extending finish into and through tank fittings and outlets. 8. Factory-Installed Storage-Tank Appurtenances: a. Anode Rods: Factory installed, magnesium. b. Drain Valve: Corrosion-resistant metal complying with ASSE 1005, factory installed. c. Insulation: Comply with ASHRAEIIESNA Surround entire storage tank except connections and controls. d. Jacket: Steel with enameled finish. FUEL-FIRED, DOMESTIC-WATER HEATERS

20 Copyright 2008 AIA MASTERSPEC Full Length 03/08 e. Combination Temperature-and-Pressure Relief Valves: ANSI Z21.221CSA 4.4-M. Include one or more relief valves with total relieving capacity at least as great as heat input, and include pressure setting less than domestic-water heater workingpressure rating. Select one relief valve with sensing element that extends into storage tank. 9. Circulating Pump: UL 778, all-bronze, centrifugal, overhung-impeller, separately coupled in-line pump as defined in HI and HI 1.3. Include mechanical seals, 125- psig minimum working-pressure rating, and 225 deg F continuous-water-temperature rating. 10. Piping: Copper tubing; copper, solder-joint fittings; and brazed or flanged joints. 2.2 DOMESTIC-WATER HEATER ACCESSORIES A. Drain Pans: Corrosion-resistant metal with raised edge. Comply with ANSIICSA LC 3. Include dimensions not less than base of domestic-water heater, and include drain outlet not less than NPS 314 with ASME B pipe threads or with ASME B garden-hose threads. B. Gas Shutoff Valves: ANSI Z21.151CSA 9.1 -M, manually operated. Furnish for installation in piping. C. Gas Pressure Regulators: ANSI Z21.18lCSA 6.3, appliance type to match gas supply. D. Automatic Gas Valves: ANSI Z21.211CSA 6.5, appliance, electrically operated, on-off automatic valve. E. Combination Temperature-and-Pressure Relief Valves: Include relieving capacity at least as great as heat input, and include pressure setting less than domestic-water heater workingpressure rating. Select relief valves with sensing element that extends into storage tank. 1. Gas-Fired, Domestic-Water Heaters: ANSI Z21.221CSA 4.4-M. F. Pressure Relief Valves: Include pressure setting less than domestic-water heater workingpressure rating. 1. Gas-Fired, Domestic-Water Heaters: ANSI Z21.221CSA 4.4-M. G. Vacuum Relief Valves: ANSI Z21.221CSA 4.4-M. 2.3 SOURCE QUALITY CONTROL A. Factory Tests: Test and inspect assembled domestic-water heaters and storage tanks specified to be ASME-code construction, according to ASME Boiler and Pressure Vessel Code. B. Hydrostatically test commercial water heaters and storage tanks to minimum of one and onehalf times pressure rating before shipment. C. Domestic-water heaters will be considered defective if they do not pass tests and inspections. D. Prepare test and inspection reports. FUEL-FIRED, DOMESTIC-WATER HEATERS

21 Copyright 2008 AIA MASTERSPEC Full Length PART 3 - EXECUTION 3.1 DOMESTIC-WATER HEATER INSTALLATION A. Commercial, Domestic-Water Heater Mounting: 1. Maintain manufacturer's recommended clearances. 2. Arrange units so controls and devices that require servicing are accessible. B. Install gas-fired, domestic-water heaters according to NFPA Install gas shutoff valves on gas supply piping to gas-fired, domestic-water heaters without shutoff valves. 2. Install gas pressure regulators on gas supplies to gas-fired, domestic-water heaters without gas pressure regulators if gas pressure regulators are required to reduce gas pressure at burner. 3. Install automatic gas valves on gas supplies to gas-fired, domestic-water heaters if required for operation of safety control. C. Install combination temperature-and-pressure relief valves in top portion of storage tanks. Use relief valves with sensing elements that extend into tanks. Extend commercial-water-heater relief-valve outlet, with drain piping same as domestic-water piping in continuous downward pitch, and discharge by positive air gap onto closest floor drain. D. Install water-heater drain piping as indirect waste to spill by positive air gap into open drains or over floor drains. Install hose-end drain valves at low points in water piping for domestic-water heaters that do not have tank drains. E. Install thermometer on outlet piping of domestic-water heaters. F. Fill domestic-water heaters with water. G. Charge domestic-water compression tanks with air. 3.2 FIELD QUALITY CONTROL A. Perform tests and inspections. 1. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect components, assemblies, and equipment installations, including connections, and to assist in testing. 2. Leak Test: After installation, charge system and test for leaks. Repair leaks and retest until no leaks exist. 3. Test and adjust controls and safeties. Replace damaged and malfbnctioning controls and equipment. B. Domestic-water heaters will be considered defective if they do not pass tests and inspections. C. Prepare test and inspection reports. FUEL-FIRED, DOMESTIC-WATER HEATERS

22 Copyright 2008 AIA MASTERSPEC Full Length DEMONSTRATION A. Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain commercial, gas-fired domestic-water heaters. END OF SECTION FUEL-FIRED, DOMESTIC-WATER HEATERS