20058 Specifications Part 3.pdf

RENOVATE ARMORY BUILDING 3 File No. 511/20058.CAK

GRAYLING, MICHIGAN DMVA No. 26B1520017

DOMESTIC WATER PIPING 22 11 16 - 1

SECTION 22 11 16 - DOMESTIC WATER PIPING

GENERAL

1.1 RELATED DOCUMENTS

1.2 SUMMARY

1.3 PERFORMANCE REQUIREMENTS

1.4 SYSTEMS DESCRIPTION

1.5 ACTION SUBMITTALS

1.6 CLOSEOUT SUBMITTALS

1.7 QUALITY ASSURANCE

1.8 PROJECT CONDITIONS

PRODUCTS

2.1 MANUFACTURERS

2.2 PIPING MATERIALS

2.3 COPPER TUBE AND FITTINGS

2.4 STAINLESS-STEEL PIPE AND FITTINGS

2.5 VALVES

2.6 SPECIALTY VALVES

EXECUTION

3.1 EXCAVATION

3.2 PIPING SYSTEM INSTALLATION

3.3 JOINT CONSTRUCTION

3.4 HANGER AND SUPPORT INSTALLATION

3.5 CONNECTIONS

3.6 FIELD QUALITY CONTROL

3.7 ADJUSTING

3.8 CLEANING AND DISINFECTION

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. Related Sections include the following:

1. Division 20 Section “Mechanical General Requirements.”

2. Division 20 Section “Basic Mechanical Materials and Methods” for materials and methods common to mechanical piping systems.

3. Division 20 Section “Hangers and Supports.”

4. Division 20 Section "Meters and Gages" for thermometers, pressure gages, and fittings.

5. Division 22 Section “General-Duty Valves for Plumbing.”

6. Division 22 Section "Domestic Water Piping Specialties" for water distribution piping specialties.

DOMESTIC WATER PIPING 22 11 16 - 2

1.2 SUMMARY

A. This Section includes domestic water piping inside the building.

1.3 PERFORMANCE REQUIREMENTS

A. Where not indicated on the Drawings, provide components and installation capable of producing domestic water piping systems with 125 psig, unless otherwise indicated.

1.4 SYSTEMS DESCRIPTION

A. Potable and non-potable domestic water piping system materials are scheduled on the Drawing.

B. Refer to Application Schedules on the Drawings for valve types to be used. Where specific valve types are not indicated, the following requirements apply:

1. Hot-Water-Piping, Balancing Duty: Calibrated balancing valves.

2. Drain Duty: Hose-end drain valves.

C. Transition and special fittings with pressure ratings at least equal to piping rating may be used unless otherwise indicated.

1.5 ACTION SUBMITTALS

A. Product Data: For pipe, tube, fittings, and couplings.

1.6 CLOSEOUT SUBMITTALS

A. Field quality-control test reports.

B. Water Samples: Specified in Part 3 "Cleaning" Article.

1.7 QUALITY ASSURANCE

A. Piping materials shall bear label, stamp, or other markings of specified testing agency.

B. Regulatory Requirements: Comply with requirements in Public Law 111-380, "Reduction of Lead in Drinking Water Act," about lead content in materials that will be in contact with potable water for human consumption.

C. Comply with NSF 61, "Drinking Water System Components - Health Effects; Sections 1 through 9," and NSF 372 Drinking Water System Components – Lead Content for potable domestic water piping and components.

DOMESTIC WATER PIPING 22 11 16 - 3

D. All grooved joint couplings, fittings, valves, and specialties shall be the products of a single manufacturer. Grooving tools shall be as recommended by the manufacturer of the grooved components.

1.8 PROJECT CONDITIONS

A. Interruption of Existing Water Service: Do not interrupt water service to facilities occupied by Owner or others unless permitted under the following conditions and then only after arranging to provide temporary water service according to requirements indicated:

1. Notify Owner no fewer than two days in advance of proposed interruption of water service.

2. Do not proceed with interruption of water service without Owner's written permission.

PRODUCTS

2.1 MANUFACTURERS

A. In other Part 2 articles where titles below introduce lists, the following requirements apply to product selection:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the manufacturers specified.

2.2 PIPING MATERIALS

A. Transition Couplings for Aboveground Pressure Piping: Coupling or other manufactured fitting the same size as, with pressure rating at least equal to and ends compatible with, piping to be joined.

2.3 COPPER TUBE AND FITTINGS

A. Hard Copper Tube: ASTM B 88, Type L, water tube, drawn temper.

1. Copper Pressure Fittings: ASME B16.18, cast-copper-alloy or ASME B16.22, wrought- copper, solder-joint fittings. Furnish wrought-copper fittings if indicated.

2. Bronze Flanges: ASME B16.24, Class 150, with solder-joint ends. Furnish Class 300 flanges if required to match piping.

3. Copper Unions: MSS SP-123, cast-copper-alloy, hexagonal-stock body, with ball-and-socket, metal-to-metal seating surfaces, and solder-joint or threaded ends.

B. Grooved-Joint Systems:

1. Manufacturers:

DOMESTIC WATER PIPING 22 11 16 - 4

a. Anvil International, Inc.; Gruvlok; Fig. 64 CTS SlideLOK.

b. Victaulic Company; Style 606 and Style 607.

2. Grooved-End-Tube Couplings: Copper-tube dimensions and design similar to AWWA C606. Include ferrous housing sections, gasket suitable for hot water, and bolts and nuts.

3. Copper, Grooved-End Fittings: ASTM B 75 copper tube or ASTM B 584 bronze castings.

C. Copper or Bronze Pressure-Seal Fittings:

1. Manufacturers: Subject to compliance with requirements, provide products by the following:

a. Viega North America; ProPress System.

b. NIBCO Inc.; Press System.

c. Mueller Industries, Inc.; Streamline PRS.

d. Elkhart Products Corporation; an Aalberts Industries Company; Xpress.

e. Apollo Valves; by Conbraco Industries; ApolloXpress.

f. Anvil International, Inc.; Anvil Press.

2. Housing: Copper.

3. O-Rings and Pipe Stops: EPDM.

4. Tools: Manufacturer's special tools.

5. Maximum 200-psig working-pressure rating at 250 deg F.

2.4 STAINLESS-STEEL PIPE AND FITTINGS

A. Stainless-Steel Pipe: Schedule 10S, ASTM A 312/A 312M, Type 304/304L, seamless or electric resistance welded pipe.

B. Grooved-Joint Systems:

1. Manufacturers:

a. Anvil International, Inc.; Gruvlok; Fig. 472 and Fig. 770.

b. Victaulic Company; Style 489.

2. Grooved-End, Stainless Steel-Piping Fittings: Schedule 10S, Type 304L or 316L stainless steel from material conforming to ASTM A 403 or pipe conforming to ASTM A 312, or sheet conforming to ASTM A 240; with dimensions matching stainless steel pipe.

3. Grooved-End, Stainless Steel-Piping Couplings: ASTM A 743, cast Type 316L stainless steel, EPDM gaskets, and stainless steel bolts and nuts.

a. Rigid Type: To provide rigidity and system support and hanging in accordance with ANSI B31.1 and B31.9.

C. Flanges: ASME B16.1, Classes 125 and 250, constructed of ASTM A 351, Type 304L stainless steel.

DOMESTIC WATER PIPING 22 11 16 - 5

2.5 VALVES

A. General-duty plumbing valves; and drain valves are specified in Division 22 Section "Plumbing Valves."

B. Balancing valves are specified in Division 22 Section "Domestic Water Piping Specialties."

2.6 SPECIALTY VALVES

A. Cast-Iron Gate Valves: MSS SP-70, with bolted bonnet, flanged end connections, and non-asbestos packing and gasket.

1. Class 125, OS&Y, Bronze-Mounted, Cast-Iron Gate Valves: ASTM A-126, Class B cast-iron body and bonnet with bronze trim, and solid-wedge disc; and having 200 psig CWP rating.

a. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1) Crane Valve Group; Crane Valves.

2) Hammond Valve.

3) Milwaukee Valve Company; Model F-2885.

4) NIBCO INC.; Model F-617-O.

5) Watts Water Technologies.

EXECUTION

3.1 EXCAVATION

A. Excavating, trenching, and backfilling are specified in Division 31 Section "Earthwork."

3.2 PIPING SYSTEM INSTALLATION

A. Basic piping installation requirements are specified in Division 20 Section "Basic Mechanical Materials and Methods."

B. Install under-building-slab copper tubing according to Copper Development Association’s "Copper Tube Handbook." Joints under slab are not allowed. Install PVC sleeve where piping penetrates slab.

C. Install wall penetration system at each service pipe penetration through foundation wall. Make installation watertight. Wall penetration systems are specified in Division 20 Section "Basic Mechanical Materials and Methods."

D. Install shutoff valve, hose-end drain valve, strainer, pressure gage, and test tee with valve, inside the building at each domestic water service entrance. Pressure gages are

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specified in Division 20 Section "Meters and Gages," and strainers are specified in Division 22 Section "Domestic Water Piping Specialties."

E. Install shutoff valve close to water main on each branch and riser serving plumbing fixtures or equipment, on each water supply to equipment, and on each water supply to plumbing fixtures that do not have supply stops.

F. Install drain valves for equipment at base of each water riser, at low points in horizontal piping, and where required to drain water piping.

1. Install hose-end drain valves at low points in water mains, risers, and branches.

2. Install stop-and-waste drain valves where indicated.

G. Install calibrated balancing valves in each hot-water circulation return branch and discharge side of each pump and circulator. Set calibrated balancing valves partly open to restrict but not stop flow. Calibrated balancing valves are specified in Division 22 Section "Domestic Water Piping Specialties."

H. Install water-pressure regulators downstream from shutoff valves. Water-pressure regulators are specified in Division 22 Section "Domestic Water Piping Specialties."

I. Install domestic water piping level without pitch and plumb.

3.3 JOINT CONSTRUCTION

A. Basic piping joint construction requirements are specified in Division 20 Section "Basic Mechanical Materials and Methods."

3.4 HANGER AND SUPPORT INSTALLATION

A. Pipe hanger and support devices are specified in Division 20 Section "Hangers and Supports." Install the following:

1. Vertical Piping: MSS Type 8 or Type 42, clamps.

2. Individual, Straight, Horizontal Piping Runs: According to the following:

a. 100 Feet and Less: MSS Type 1, adjustable, steel clevis hangers.

b. Longer than 100 Feet: MSS Type 43, adjustable roller hangers.

c. Longer than 100 Feet: MSS Type 49, spring cushion rolls, if indicated.

3. Multiple, Straight, Horizontal Piping Runs 100 Feet or Longer: MSS Type 44, pipe rolls. Support pipe rolls on trapeze.

4. Base of Vertical Piping: MSS Type 52, spring hangers.

B. Install supports according to Division 20 Section "Hangers and Supports."

C. Support vertical piping and tubing at base and at each floor.

D. Rod diameter may be reduced 1 size for double-rod hangers, to a minimum of 3/8 inch.

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E. Install hangers for drawn-temper 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 1-1/4: 72 inches with 3/8-inch rod.

3. NPS 1-1/2 and NPS 2: 96 inches with 3/8-inch rod.

4. NPS 2-1/2: 108 inches with 1/2-inch rod.

5. NPS 3 to NPS 5: 10 feet with 1/2-inch rod.

F. Install supports for vertical copper tubing every 10 feet.

G. Alternate support for copper tubing NPS 3/4 and smaller: Continuous support using v-shaped plastic pipe channel, maximum hanger spacing 8 feet with 3/8-inch rod.

H. Install hangers for Schedule 10 stainless steel piping with the following maximum horizontal spacing and minimum rod diameters:

1. NPS 2: 84 inches with 3/8-inch rod.

2. NPS 2-1/2: 84 inches with 1/2-inch rod.

3. NPS 3: 96 inches with 1/2-inch rod.

4. NPS 4: 10 feet with 5/8-inch rod.

I. Install supports for vertical Schedule 10 stainless steel piping every 15 feet.

J. Support piping and tubing not listed above according to MSS SP-69 and manufacturer's written instructions.

3.5 CONNECTIONS

A. Drawings indicate general arrangement of piping, fittings, and specialties.

B. Connect domestic water piping to existing domestic water distribution piping. Use dielectric fitting if connection dissimilar metals. Refer to Application Schedule on the Drawings and Division 20 Section “Basic Mechanical Materials and Methods” for dielectric fittings.

C. Install piping adjacent to equipment and machines to allow service and maintenance.

D. Connect domestic water piping to the following:

1. Plumbing Fixtures: Cold- and hot-water supply piping in sizes indicated, but not smaller than required by plumbing code. Refer to Division 22 Section "Plumbing Fixtures."

2. Equipment: Cold- and hot-water supply piping as indicated, but not smaller than equipment connections. Provide shutoff valve and union for each connection.

Use flanges instead of unions for NPS 2-1/2 and larger.

3. Booster Pumps: Cold-water suction and discharge piping.

4. Water Heaters: Cold-water supply and hot-water outlet piping in sizes indicated, but not smaller than sizes of water heater connections.

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3.6 FIELD QUALITY CONTROL

A. Inspect domestic water piping as follows:

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 24 hours 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 test or inspection, make required corrections and arrange for reinspection.

4. Reports: Prepare inspection reports and have them signed by authorities having jurisdiction.

B. Test domestic water piping as follows:

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 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 150 psig. 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 required corrective action.

3.7 ADJUSTING

A. Perform the following adjustments before operation:

1. Close drain valves, hydrants, and hose bibbs.

2. Open shutoff valves to fully open position.

3. Open throttling valves to proper setting.

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4. Adjust balancing valves in hot-water-circulation return piping to provide adequate flow.

a. Manually adjust ball-type balancing valves in hot-water-circulation return piping to provide flow of hot water in each branch.

b. Adjust calibrated balancing valves to flows indicated.

5. Remove plugs used during testing of piping and plugs used for temporary sealing of piping during installation.

6. Remove and clean strainer screens. Close drain valves and replace drain plugs.

7. Remove filter cartridges from housings and verify that cartridges are as specified for application where used and are clean and ready for use.

8. Check plumbing specialties and verify proper settings, adjustments, and operation.

3.8 CLEANING AND DISINFECTION

A. Clean interior of domestic water piping system. Remove dirt and debris as work progresses.

B. Clean and disinfect potable domestic water piping as follows:

1. Purge new piping and parts of existing domestic water piping that have been altered, extended, or repaired before using.

2. Use purging and disinfecting procedures prescribed by authorities having jurisdiction or, if methods are not prescribed, procedures described in either AWWA C651 or AWWA C652 or as 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 water/chlorine 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 water/chlorine 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.

C. Prepare and submit reports of purging and disinfecting activities.

END OF SECTION 22 11 16

DOMESTIC WATER PIPING SPECIALTIES 22 11 19 - 1

SECTION 22 11 19 - DOMESTIC WATER PIPING SPECIALTIES

GENERAL

1.1 RELATED DOCUMENTS

1.2 PERFORMANCE REQUIREMENTS

1.3 ACTION SUBMITTALS

1.4 CLOSEOUT SUBMITTALS

1.5 QUALITY ASSURANCE

PRODUCTS

2.1 VACUUM BREAKERS

2.2 BACKFLOW PREVENTERS

2.3 BALANCING VALVES

2.4 TEMPERATURE-ACTUATED WATER MIXING VALVES

2.5 PREPIPED TEMPERED WATER MIXING SYSTEM

2.6 STRAINERS FOR DOMESTIC WATER PIPING

2.7 OUTLET BOXES

2.8 FIRE-RATED OUTLET BOXES

2.9 HOSE BIBBS

2.10 WALL HYDRANTS

2.11 WATER HAMMER ARRESTERS

2.12 AIR VENTS

2.13 TRAP-SEAL PRIMER VALVES

2.14 DOMESTIC WATER CARTRIDGE FILTERS

EXECUTION

3.1 INSTALLATION

3.2 DOMESTIC WATER CARTRIDGE-FILTER INSTALLATION

3.3 CONNECTIONS

3.4 LABELING AND IDENTIFYING

3.5 FIELD QUALITY CONTROL

3.6 ADJUSTING

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. Related Sections include the following:

1. Division 20 Section “Mechanical General Requirements.”

2. Division 20 Section “Basic Mechanical Materials and Methods.”

3. Division 20 Section "Meters and Gages" for thermometers, pressure gages, and flow meters in domestic water piping.

4. Division 22 Section "Domestic Water Piping " for water meters.

5. Division 22 Section "Drinking Fountains, Water Coolers and Cuspidors" for water filters for water coolers.

DOMESTIC WATER PIPING SPECIALTIES 22 11 19 - 2

1.2 PERFORMANCE REQUIREMENTS

A. Minimum Working Pressure for Domestic Water Piping Specialties: 125 psig, unless otherwise indicated.

1.3 ACTION SUBMITTALS

A. Product Data: For each type of product indicated.

1.4 CLOSEOUT SUBMITTALS

A. Field quality-control test reports.

B. Flow Reports and Settings: For calibrated balancing valves.

C. Operation and Maintenance Data: For domestic water piping specialties to include in emergency, operation, and maintenance manuals.

1.5 QUALITY ASSURANCE

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by an NRTL acceptable to authorities having jurisdiction, and marked for intended use.

B. Regulatory Requirements: Comply with requirements in Public Law 111-380, "Reduction of Lead in Drinking Water Act," about lead content in materials that will be in contact with potable water for human consumption.

C. NSF Compliance:

1. Comply with NSF 14, "Plastics Piping Components and Related Materials," for plastic domestic water piping components.

2. Comply with NSF 61, "Drinking Water System Components - Health Effects;

Sections 1 through 9."

3. Comply with NSF 372, “Drinking Water System Components – Lead Content” for components with wetted surfaces in contact with potable water.

PRODUCTS

2.1 VACUUM BREAKERS

A. Pipe-Applied, Atmospheric-Type Vacuum Breakers:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Apollo Valves; Conbraco Industries, Inc.

DOMESTIC WATER PIPING SPECIALTIES 22 11 19 - 3

b. FEBCO; a Division of Watts Water Technologies, Inc.

c. Watts Water Technologies, Inc.; Watts Regulator Co.

d. Zurn Plumbing Products Group; Wilkins Div.

2. Standard: ASSE 1001.

3. Size: NPS 1/4 to NPS 3, as required to match connected piping.

4. Body: Bronze.

5. Inlet and Outlet Connections: Threaded.

6. Finish: Chrome plated.

B. Hose-Connection Vacuum Breakers:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Apollo Valves; Conbraco Industries, Inc.

b. MIFAB, Inc.

c. Watts Water Technologies, Inc.; Watts Regulator Co.

d. Woodford Manufacturing Company.

2. Standard: ASSE 1011.

3. Body: Bronze or brass, nonremovable, with manual drain.

4. Outlet Connection: Garden-hose threaded complying with ASME B1.20.7.

5. Finish: Chrome or nickel plated.

2.2 BACKFLOW PREVENTERS

A. Reduced-Pressure-Principle Backflow Preventers:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Apollo Valves; Conbraco Industries, Inc.

b. FEBCO; a Division of Watts Water Technologies, Inc.

c. Watts Water Technologies, Inc.; Ames Fire & Waterworks.

d. Watts Water Technologies, Inc.; Watts Regulator Co.

e. Zurn Plumbing Products Group; Wilkins Div.

2. Standard: ASSE 1013.

3. Operation: Continuous-pressure applications.

4. Pressure Loss: 12 psig maximum, through middle 1/3 of flow range.

5. Size and Capacities: As scheduled on the drawings.

6. Body: Bronze for NPS 2 and smaller; cast-iron or ductile-iron, with interior lining complying with AWWA C550 or that is FDA approved for NPS 2-1/2 and larger.

7. End Connections: Threaded for NPS 2 and smaller; flanged for NPS 2-1/2 and larger.

8. Configuration: Designed for horizontal, straight through flow.

9. Accessories:

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a. Valves: Ball type with threaded ends on inlet and outlet of NPS 2 and smaller; gate-type with flanged ends on inlet and outlet of NPS 2-1/2 and larger.

b. Air-Gap Fitting: ASME A112.1.2, matching backflow-preventer connection.

c. Y-Pattern strainer and soft-seated check valve.

B. Beverage-Dispensing-Equipment Backflow Preventers:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Apollo Valves; Conbraco Industries, Inc.

b. Watts Water Technologies, Inc.; Watts Regulator Co.

c. Zurn Plumbing Products Group; Wilkins Div.

2. Standard: ASSE 1022.

3. Operation: Continuous-pressure applications.

4. Size: NPS 1/4 or NPS 3/8.

5. Body: Stainless steel or Acetal plastic.

6. End Connections: Threaded.

C. Carbonated-Beverage-Dispenser, Dual-Check-Valve Backflow Preventers:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Watts Water Technologies, Inc.; Watts Regulator Co.

2. Standard: ASSE 1032.

3. Operation: Continuous-pressure applications.

4. Size: NPS 1/4 or NPS 3/8.

5. Body: Stainless steel.

6. End Connections: Threaded.

2.3 BALANCING VALVES

A. Calibrated Balancing Valves NPS 1/2:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Armstrong International, Inc.

b. Armstrong Pumps, Inc.

c. Apollo Valves; by Conbraco Industries, Inc.

d. Bell & Gossett; Xylem Inc.

e. Flo Fab Inc.

f. Flow Design Inc.

g. Griswold Controls.

h. NIBCO INC.

i. IMI Indoor Climate; Tour & Andersson.

DOMESTIC WATER PIPING SPECIALTIES 22 11 19 - 5

j. Taco, Inc.

k. Watts Water Technologies, Inc.; Watts Regulator Co.

2. Type: Ball or Y-pattern globe valve with two readout ports and memory setting indicator.

3. Body: Dezincification resistant brass, or bronze.

4. Minimum Flow Rate: 0.3 gpm.

5. Accessories: Meter hoses, fittings, valves, differential pressure meter, and carrying case.

B. Calibrated Balancing Valves NPS 3/4 to NPS 2:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Armstrong International, Inc.

b. Armstrong Pumps, Inc.

c. Apollo Valves; by Conbraco Industries, Inc.

d. Bell & Gossett; Xylem Inc.

e. Flo Fab Inc.

f. Flow Design Inc.

g. Griswold Controls.

h. NIBCO INC.

i. IMI Indoor Climate; Tour & Andersson.

j. Taco, Inc.

k. Watts Water Technologies, Inc.; Watts Regulator Co.

2. Type: Ball or Y-pattern globe valve with two readout ports and memory setting indicator.

3. Body: Dezincification resistant brass, or bronze.

4. Size: Same as connected piping, but not larger than NPS 2.

5. Accessories: Meter hoses, fittings, valves, differential pressure meter, and carrying case.

C. Calibrated Balancing Valves NPS 2-1/2 to NPS 4:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Armstrong International, Inc.

b. Bell & Gossett; Xylem Inc.

c. Flo Fab Inc.

d. Flow Design Inc.

e. Griswold Controls.

f. NIBCO INC.

g. IMI Indoor Climate; Tour & Andersson.

h. Watts Water Technologies, Inc.; Watts Regulator Co.

2. Type: Adjustable with Y-pattern globe valve, two readout ports, and memory-setting indicator.

3. Size: Same as connected piping, but not smaller than NPS 2-1/2.

DOMESTIC WATER PIPING SPECIALTIES 22 11 19 - 6

4. Accessories: Meter hoses, fittings, valves, differential pressure meter, and carrying case.

2.4 TEMPERATURE-ACTUATED WATER MIXING VALVES

A. Water-Temperature Limiting Devices:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Acorn Controls; Morris Group International; ST70.

b. Apollo Valves; Conbraco Industries, Inc.; Model MVD (34D Series).

c. Bradley Corporation.

d. Lawler Manufacturing Company, Inc.

e. Leonard Valve Company; Series 170-LF and 270-LF.

f. Watts Water Technologies, Inc.; Powers Division; Hydroguard Series

LFe480, LFG480, and LFLM495.

g. Watts Water Technologies, Inc.; Watts Regulator Co.

h. Zurn Plumbing Products Group; Wilkins Div.

2. Standard: ASSE 1070.

3. Pressure Rating: 125 psig.

4. Type: Thermostatically controlled water mixing valve.

5. Material: Bronze body with corrosion-resistant interior components.

6. Connections: 1/2-inch union or 3/8-inch compression; with integral check valves.

7. Accessories: Adjustable temperature-control knob.

8. Outlet Temperature Range: Adjustable from 85 deg F to 120 deg F. Set at 105 deg F.

9. Minimum Flow Rate: 0.5 gpm.

10. Valve Finish: Chrome plated.

2.5 PREPIPED TEMPERED WATER MIXING SYSTEM

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Acorn Controls; Morris Group International.

b. Armstrong International, Inc. (RADA).

c. Bradley Corporation.

d. Lawler Manufacturing Company, Inc.; Prepiped 802 Hi-Low Tempered water Mixing System.

e. Leonard Valve Company.

f. Symmons Industries, Inc.

g. Watts Water Technologies, Inc.; Powers Division.

h. Watts Water Technologies, Inc.; Watts Regulator Co.

2. Description: Completely assembled and tested prepiped manifold system including mixing valve(s), recirculation pump, circuit setting balancing valve, DOMESTIC WATER PIPING SPECIALTIES 22 11 19 - 7 aquastat, circulator switch box, thermometers, isolation valves, mounting strut, and test connection.

3. Standard: ASSE 1017.

4. Mixing Valve: Exposed-mounting, thermostatically controlled water mixing valve.

a. Material: Bronze body with corrosion-resistant interior components.

b. Connections: Threaded union inlets and outlet.

c. Accessories: Manual temperature control, check stops and strainers on hot- and cold-water supplies, and adjustable, temperature-control handle.

d. Valve Pressure Rating: 125 psig minimum, unless otherwise indicated.

e. Size, Settings, and Capacities: As scheduled on the drawings.

f. Valve Finish: Rough bronze.

5. Pump: Meeting requirements in Division 22 Section “Domestic Water Circulation Pumps.”

6. Mounting Strut: Meeting requirements in Division 20 Section “Hangers and Supports.”

2.6 STRAINERS FOR DOMESTIC WATER PIPING

A. Y-Pattern Strainers:

1. Manufacturers:

a. Apollo Valves; Conbraco Industries, Inc.

b. Keckley Company.

c. Metraflex Company.

d. Mueller Steam Specialty; a Watts Brand.

e. NIBCO, Inc.

f. Titan Flow Control, Inc.

g. Watts.

h. Yarway; Emerson Automation Solutions.

2. CWP: 200 psig minimum, unless otherwise indicated.

3. SWP: 125 psig minimum, unless otherwise indicated.

4. Body: Bronze for NPS 2 and smaller; cast iron with interior lining complying with

AWWA C550 or FDA-approved, epoxy coating and for NPS 2-1/2 and larger.

5. End Connections: Threaded or soldered for NPS 2 and smaller; flanged for

NPS 2-1/2 and larger.

6. Screen: Stainless steel with round perforations, unless otherwise indicated.

7. Perforation Size:

a. Strainers NPS 2 and Smaller: 0.033 inch.

b. Strainers NPS 2-1/2 to NPS 4: 0.045 inch.

8. Drain: Pipe plug.

DOMESTIC WATER PIPING SPECIALTIES 22 11 19 - 8

2.7 OUTLET BOXES

A. Icemaker Outlet Boxes:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Sioux Chief Manufacturing Company, Inc.; Ox Box.

b. Oatey SCS.

c. LSP Products Group, Inc.

d. Acorn Engineering Company.

2. Mounting: Recessed.

3. Material and Finish: Enameled- or epoxy-painted-steel or Stainless-steel box and faceplate.

4. Faucet: Valved fitting complying with ASME A112.18.1. Include NPS 1/2 or smaller copper tube outlet.

5. Supply Shutoff Fitting: NPS 1/2 gate, globe, or ball valve and NPS 1/2 copper, water tubing.

2.8 FIRE-RATED OUTLET BOXES

A. Fire-Rated Ice Maker Outlet Boxes:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Sioux Chief Manufacturing Company, Inc.; Ox Box.

b. Oatey SCS; Fire-Rated Ice Maker Outlet Boxes.

2. Certification: Warnock Hersey certified for 1-hour and 2-hour fire-rated walls.

3. Mounting: Recessed. Using galvanized steel bracket.

4. Material and Finish: Bulk molded compound thermoset fire-rated plastic.

5. Faucet: Cold-water, 1/4-turn valved fittings.

6. Water Hammer Arrestors: Integral.

7. Box Pad: UL Classified Unifrax FyreWrap insulation material.

2.9 HOSE BIBBS

A. Hose Bibbs:

1. Standard: ASME A112.18.1 for sediment faucets.

2. Body Material: Bronze.

3. Seat: Bronze, replaceable.

4. Supply Connections: NPS 1/2 or NPS 3/4 threaded or solder-joint inlet.

5. Outlet Connection: Garden-hose thread complying with ASME B1.20.7.

6. Pressure Rating: 125 psig.

7. Vacuum Breaker: Integral nonremovable, drainable, hose-connection vacuum breaker complying with ASSE 1011.

DOMESTIC WATER PIPING SPECIALTIES 22 11 19 - 9

8. Finish for Equipment Rooms: Chrome or nickel plated.

9. Finish for Service Areas: Chrome or nickel plated.

10. Finish for Finished Rooms: Chrome or nickel plated.

11. Operation for Equipment Rooms: Wheel handle or operating key.

12. Operation for Service Areas: Operating key.

13. Operation for Finished Rooms: Operating key.

14. Include operating key with each operating-key hose bibb.

15. Include integral wall flange with each chrome- or nickel-plated hose bibb.

2.10 WALL HYDRANTS

A. Nonfreeze Wall Hydrants:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. Josam Company.

b. MIFAB, Inc.

c. Smith, Jay R. Mfg. Co.; Division of Smith Industries, Inc.

d. Tyler Pipe; Wade Div.

e. Watts Water Technologies, Inc.; Watts Regulator co.

f. Woodford Manufacturing Company.

g. Zurn Plumbing Products Group; Specification Drainage Operation.

2. Standard: ASME A112.21.3M for self-draining wall hydrants.

3. Pressure Rating: 125 psig.

4. Operation: Loose key.

5. Casing and Operating Rod: Of length required to match wall thickness. Include wall clamp.

6. Inlet: NPS 3/4 or NPS 1.

7. Outlet: Concealed, with integral vacuum breaker and garden-hose thread complying with ASME B1.20.7.

8. Box: Deep, flush mounting with cover.

9. Box and Cover Finish: Polished nickel bronze or chrome plated.

10. Nozzle and Wall-Plate Finish: Rough bronze.

11. Operating Keys(s): One with each wall hydrant.

2.11 WATER HAMMER ARRESTERS

A. Water Hammer Arresters (Copper Tube Type):

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. MIFAB, Inc.

b. PPP Inc.

c. Sioux Chief Manufacturing Company, Inc.

d. Smith, Jay R. Mfg. Co.; Division of Smith Industries, Inc.

e. Tyler Pipe; Wade Div.

DOMESTIC WATER PIPING SPECIALTIES 22 11 19 - 10

f. Watts Drainage Products Inc.

g. Watts Water Technologies, Inc.; Watts Regulator Co.

2. Standard: ASSE 1010 or PDI-WH 201.

3. Type: Copper tube with piston.

4. Size: ASSE 1010, Sizes AA and A through F or PDI-WH 201, Sizes A through F.

B. Water Hammer Arresters (Metal Bellows Type):

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. AMTROL, Inc.

b. Josam Company.

c. MIFAB, Inc.

d. Smith, Jay R. Mfg. Co.; Division of Smith Industries, Inc.

e. Tyler Pipe; Wade Div.

f. Watts Drainage Products Inc.

g. Zurn Plumbing Products Group; Specification Drainage Operation.

2. Standard: ASSE 1010 or PDI-WH 201.

3. Type: Precharged stainless steel bellows.

4. Size: ASSE 1010, Sizes AA and A through F or PDI-WH 201, Sizes A through F.

2.12 AIR VENTS

A. Bolted-Construction Automatic Air Vents:

1. Body: Bronze.

2. Pressure Rating: 125-psig minimum pressure rating at 140 deg F.

3. Float: Replaceable, corrosion-resistant metal.

4. Mechanism and Seat: Stainless steel.

5. Size: NPS 3/8 minimum inlet.

6. Inlet and Vent Outlet End Connections: Threaded.

B. Welded-Construction Automatic Air Vents:

1. Body: Stainless steel.

2. Pressure Rating: 150-psig minimum pressure rating.

3. Float: Replaceable, corrosion-resistant metal.

4. Mechanism and Seat: Stainless steel.

5. Size: NPS 3/8 minimum inlet.

6. Inlet and Vent Outlet End Connections: Threaded.

2.13 TRAP-SEAL PRIMER VALVES

A. Supply-Type, Trap-Seal Primer Valves:

DOMESTIC WATER PIPING SPECIALTIES 22 11 19 - 11

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. MIFAB, Inc.

b. PPP Inc.

c. Sioux Chief Manufacturing Company, Inc.

d. Smith, Jay R. Mfg. Co.; Division of Smith Industries, Inc.

e. Watts Water Technologies, Inc.

2. Standard: ASSE 1018.

3. Pressure Rating: 125 psig minimum.

4. Body: Bronze.

5. Inlet and Outlet Connections: NPS 1/2 threaded, union, or solder joint.

6. Gravity Drain Outlet Connection: NPS 1/2 threaded or solder joint.

7. Finish: Chrome plated, or rough bronze for units used with pipe or tube that is not chrome finished.

B. Drainage-Type, Trap-Seal Primer Valves:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. PPP Inc.; Tail Piece Trap Priming Assembly.

b. MIFAB, Inc.

c. Smith, Jay R. Mfg. Co.; Division of Smith Industries, Inc.

2. Standard: ASSE 1044, lavatory P-trap with NPS 1/2 minimum, trap makeup connection.

3. Size: NPS 1-1/4 minimum.

4. Material: Chrome-plated, cast brass.

C. Electronic-Type, Trap-Seal Primer:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

a. PPP Inc.; Solo-Prime.

2. Standard: ASSE 1044.

3. Body Material: NPS 1, ASTM B 88, Type K; copper, water tubing.

4. Electric Controls: Sub-miniature solenoid valve, designed to interface with low-voltage energy management systems.

5. Air Gap: 1-inch.

6. Inlet Size: NPS 1/2.

7. Outlet Size: NPS 1/2, threaded.

2.14 DOMESTIC WATER CARTRIDGE FILTERS

A. Off-Floor Cartridge Filters:

DOMESTIC WATER PIPING SPECIALTIES 22 11 19 - 12

1. Manufacturers:

a. Culligan International Company.

b. Harmsco Filtration Products.

c. Osmonics, Inc.; Hytrex Filters Div.

d. Parker Hannifin Corporation; Process Filtration Div.

e. Water Equipment Technologies (WET); Xylem Inc.

f. Watts Premier.

2. Description: Simplex, wall-mounting housing with replaceable element for removing suspended particles from water.

a. Housing: Corrosion resistant; designed to separate feedwater from filtrate and to direct feedwater through water filter element; with element support.

1) Pipe Connections: Threaded according to ASME B1.20.1.

2) Support: Wall bracket.

b. Element: Replaceable; of shape to fit housing.

3. Capacity and Characteristics:

a. Refer to Schedule on Drawings.

EXECUTION

3.1 INSTALLATION

A. Refer to Division 20 Section "Basic Mechanical Materials and Methods" for piping joining materials, joint construction, and basic installation requirements.

B. Install backflow preventers in each water supply to mechanical equipment and systems and to other equipment and water systems that may be sources of contamination.

Comply with authorities having jurisdiction.

1. Locate backflow preventers in same room as connected equipment or system.

2. Install drain for backflow preventers with atmospheric-vent drain connection with air-gap fitting, fixed air-gap fitting, or equivalent positive pipe separation of at least two pipe diameters in drain piping and pipe to floor drain. Locate air-gap device attached to or under backflow preventer. Simple air breaks are not acceptable for this application.

3. Do not install bypass piping around backflow preventers.

4. Install strainer and soft-seated check valve upstream of backflow preventer.

Exception: Fire protection backflow preventers.

C. Install water control valves with inlet and outlet shutoff valves. Install pressure gages on inlet and outlet.

D. Install balancing valves in locations where they can easily be adjusted.

DOMESTIC WATER PIPING SPECIALTIES 22 11 19 - 13

E. Install temperature-actuated water mixing valves with strainers, and check stops or shutoff valves on inlets and with shutoff valve on outlet.

1. Install thermometers and water regulators if specified.

2. Install cabinet-type units recessed in or surface mounted on wall as specified.

F. Install Y-pattern strainers for water on supply side of each control valve, solenoid valve, and pump.

G. Install outlet boxes recessed in wall. Install 2-by-4-inch fire-retardant-treated-wood blocking wall reinforcement between studs. Fire-retardant-treated-wood blocking is specified in Division 06 Section "Rough Carpentry."

H. Install water hammer arresters in water piping according to PDI-WH 201.

I. Install air vents at high points of water piping. Install drain piping and discharge onto floor drain.

J. Install supply-type, trap-seal primer valves with outlet piping pitched down toward drain trap a minimum of 1 percent, and connect to floor-drain body, trap, or inlet fitting.

Adjust valve for proper flow.

K. Install drainage-type, trap-seal primer valves as lavatory trap with outlet piping pitched down toward drain trap a minimum of 1 percent, and connect to floor-drain body, trap, or inlet fitting.

3.2 DOMESTIC WATER CARTRIDGE-FILTER INSTALLATION

A. Install cartridge filters level and plumb, according to layout drawings, original design, and referenced standards. Maintain manufacturer's recommended clearances. Arrange units so controls and devices needing service are accessible.

B. Attach wall brackets for off-floor, wall-mounting, cartridge filter to vertical surface.

Attach housing(s), and base if any, to wall bracket.

C. Install housings for off-floor, in-line, cartridge filters in piping.

D. Install isolation valves on inlet and outlet piping of each water filter.

E. Install pressure gages on inlet and outlet piping of each water filter. Pressure gages are specified in Division 20 Section "Meters and Gages."

1. Exception: Water filtration equipment with factory-installed pressure gages at locations indicated.

F. Install filter elements in cartridges after completion of flushing and cleaning.

DOMESTIC WATER PIPING SPECIALTIES 22 11 19 - 14

3.3 CONNECTIONS

A. Piping installation requirements are specified in other Division 20 and 22 Sections.

Drawings indicate general arrangement of piping and specialties.

3.4 LABELING AND IDENTIFYING

A. Equipment Nameplates and Signs: Install engraved plastic-laminate equipment nameplate or sign on or near each of the following:

1. Carbonated-beverage-machine backflow preventers.

2. Calibrated balancing valves.

3. Primary, thermostatic, water mixing valves.

4. Primary water tempering valves.

5. Outlet boxes.

6. Supply-type, trap-seal primer valves.

7. Trap-seal primer systems.

B. Distinguish among multiple units, inform operator of operational requirements, indicate safety and emergency precautions, and warn of hazards and improper operations, in addition to identifying unit. Nameplates and signs are specified in Division 20 Section "Mechanical Identification."

3.5 FIELD QUALITY CONTROL

A. Perform the following tests and prepare test reports:

1. Test each backflow prevention device according to authorities having jurisdiction and the device's reference standard.

B. Remove and replace malfunctioning domestic water piping specialties and retest as specified above.

3.6 ADJUSTING

A. Set field-adjustable pressure set points of water pressure-reducing valves.

B. Set field-adjustable flow set points of balancing valves as follows:

1. Set calibrated balancing valves at calculated presettings.

2. Measure flow each station and adjust where necessary.

3. Record settings and mark balancing devices.

C. Set field-adjustable temperature set points of temperature-actuated water mixing valves.

END OF SECTION 22 11 19

DOMESTIC WATER CIRCULATION PUMPS 22 11 23 - 1

SECTION 22 11 23 - DOMESTIC WATER CIRCULATION PUMPS

GENERAL

1.1 RELATED DOCUMENTS

1.2 DEFINITIONS

1.3 ACTION SUBMITTALS

1.4 INFORMATIONAL SUBMITTALS

1.5 CLOSEOUT SUBMITTALS

1.6 QUALITY ASSURANCE

1.7 DELIVERY, STORAGE, AND HANDLING

PRODUCTS

2.1 MANUFACTURERS

2.2 CLOSE COUPLED, IN-LINE, SEALLESS CENTRIFUGAL PUMPS

2.3 CLOSE-COUPLED, IN-LINE CENTRIFUGAL PUMPS (SMALL)

2.4 CONTROLS

2.5 FLEXIBLE CONNECTORS

2.6 BUILDING-AUTOMATION-SYSTEM INTERFACE

EXECUTION

3.1 EXAMINATION

3.2 PUMP INSTALLATION

3.3 CONTROL INSTALLATION

3.4 CONNECTIONS

3.5 STARTUP SERVICE

3.6 DEMONSTRATION

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. Related Sections include the following:

1. Division 20 Section “Mechanical General Requirements.”

2. Division 20 Section “Basic Mechanical Materials and Methods.”

3. Division 20 Section “Pipe Flexible Connectors, Expansion Fittings and Loops.”

1.2 DEFINITIONS

A. PEI: Pump Energy Index as defined by the Department of Energy.

B. PEICL: Pump Energy Index – Constant Load, as defined by the Department of Energy.

C. PEIVL: Pump Energy Index – Variable Load, as defined by the Department of Energy.

DOMESTIC WATER CIRCULATION PUMPS 22 11 23 - 2

1.3 ACTION SUBMITTALS

A. Product Data: For each type and size of domestic water pump specified. Include certified performance curves with operating points plotted on curves; and rated capacities of selected models, furnished specialties, and accessories.

1.4 INFORMATIONAL SUBMITTALS

A. Shop Drawings: Diagram power, signal, and control wiring.

1.5 CLOSEOUT SUBMITTALS

A. Operation and Maintenance Data: For domestic water pumps to include in emergency, operation, and maintenance manuals.

1.6 QUALITY ASSURANCE

A. Product Options: Drawings indicate size, profiles, and dimensional requirements of domestic water pumps and are based on the specific system indicated. Refer to Division 01 Section "Product Requirements."

B. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by an NRTL acceptable to authorities having jurisdiction, and marked for intended use.

C. Department of Energy Requirements: Pumps supplied that are regulated by the Department of Energy pump standards shall bear the acceptable PEI index.

1. Constant load pumps supplied shall bear the acceptable PEICL index.

2. Variable load pumps supplied with variable speed controls shall bear the acceptable PEIvL index.

3. Submittals for approval shall clearly identify the applicable PEI index and affirm that that index meets the DOE pump standards.

D. Regulatory Requirements: Comply with requirements in Public Law 111-380, "Reduction of Lead in Drinking Water Act," about lead content in materials that will be in contact with potable water for human consumption.

E. Comply with NSF 61, "Drinking Water System Components - Health Effects; Sections 1 through 9," and NSF 372 Drinking Water System Components – Lead Content for potable domestic water piping and components.

F. UL Compliance: Comply with UL 778 for motor-operated water pumps.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Retain shipping flange protective covers and protective coatings during storage.

DOMESTIC WATER CIRCULATION PUMPS 22 11 23 - 3

B. Protect bearings and couplings against damage.

C. Comply with pump manufacturer's written rigging instructions for handling.

PRODUCTS

2.1 MANUFACTURERS

A. In other Part 2 articles where titles below introduce lists, the following requirements apply to product selection:

1. Manufacturers: Subject to compliance with requirements, provide products by one of the manufacturers specified.

2.2 CLOSE COUPLED, IN-LINE, SEALLESS CENTRIFUGAL PUMPS

A. Manufacturers:

1. Armstrong Pumps Inc.; Astro.

2. Bell & Gossett; Xylem Inc.; Series LR and NBF.

3. Grundfos Pumps Corp.

4. Taco, Inc.

B. Description: Factory-assembled and -tested, single-stage, close-coupled, in-line, sealless centrifugal pumps as defined in HI 5.1-5.6.

1. Pump and Motor Assembly: Hermetically sealed, replaceable-cartridge-type unit with motor and impeller on common shaft and designed for installation with pump and motor shaft mounted horizontally.

2. Casing: Bronze, with threaded companion-flange connections.

3. Impeller: Corrosion-resistant material.

4. Motor: Single speed, unless otherwise indicated. Comply with requirements in

Division 20 Section "Motors."

C. Capacities and Characteristics: Refer to Schedule on Drawings.

2.3 CLOSE-COUPLED, IN-LINE CENTRIFUGAL PUMPS (SMALL)

A. Manufacturers:

1. Armstrong Pumps Inc.

2. Bell & Gossett; Xylem Inc.; Series PL.

3. Grundfos Pumps Corp.

4. Taco, Inc.; Series 1400.

B. Description: Factory-assembled and –tested, centrifugal, overhung-impeller, close-coupled, in-line pump as defined in HI 1.1-1.2 and HI 1.3; and designed for installation with pump and motor shafts mounted horizontally.

DOMESTIC WATER CIRCULATION PUMPS 22 11 23 - 4

1. Pump Construction: All bronze.

a. Casing: Radially split, bronze, with threaded companion-flange connections.

b. Impeller: Glass-reinforced corrosion-resistant material; keyed to shaft.

c. Shaft: High-strength alloy steel.

d. Seal: Mechanical, carbon/silicon carbide seal.

e. Bearings: Permanently oil-lubricated type.

2. Motor-Single speed, with oil-lubricated bearings, unless otherwise indicated; and directly mounted to pump casing. Comply with requirements in Division 20 Section “Motors.”

C. Capacities and Characteristics: Refer to Schedule on Drawings.

2.4 CONTROLS

A. Thermostats: Electric; adjustable for control of hot-water circulation pump.

1. Manufacturers:

a. Honeywell International, Inc.; Aquastat.

b. Johnson Controls, Inc.

c. Schneider Electric USA, Inc.

d. Siemens Industry, Inc.; Building Technologies Division.

e. White-Rodgers Div.; Emerson Electric Co.

2. Type: Strap-on sensor, with suitable removable spring clip attaching thermostat to hot-water circulation piping.

3. Range: 65 to 200 deg F.

4. Operation of Pump: On or off.

5. Transformer: Provide if required.

6. Power Requirement: 24 V, ac or 120 V, ac.

7. Settings: Start pump at 139 deg F and stop pump at 142 deg F.

2.5 FLEXIBLE CONNECTORS

A. Refer to Division 20 Section “Pipe Flexible Connectors, Expansion Fittings and Loops.”

2.6 BUILDING-AUTOMATION-SYSTEM INTERFACE

A. Provide auxiliary contacts in pump controllers for interface to building automation system. Include the following:

1. On-off status of each pump.

2. Alarm status.

DOMESTIC WATER CIRCULATION PUMPS 22 11 23 - 5

EXECUTION

3.1 EXAMINATION

A. Examine roughing-in of domestic-water-piping system to verify actual locations of connections before pump installation.

3.2 PUMP INSTALLATION

A. Comply with HI 1.4.

B. Install pumps with access for periodic maintenance including removal of motors, impellers, couplings, and accessories.

C. Independently support pumps and piping so weight of piping is not supported by pumps and weight of pumps is not supported by piping. Do not use pump motors as a support point.

D. Install centrifugal pumps with motor and pump shafts horizontal.

E. Install continuous-thread hanger rods and spring hangers or spring hangers with vertical-limit stop of sufficient size to support pump weight. Vibration isolation devices are specified in Division 20 Section "Mechanical Vibration Controls." Fabricate brackets or supports as required. Hanger and support materials are specified in Division 20 Section "Hangers and Supports."

3.3 CONTROL INSTALLATION

A. Install thermostats in hot-water return piping.

B. Install timers where indicated on Drawings.

3.4 CONNECTIONS

A. Piping installation requirements are specified in other Division 20 and 22 Sections.

Drawings indicate general arrangement of piping, fittings, and specialties.

B. Install piping adjacent to pumps to allow service and maintenance.

C. Connect domestic water piping to pumps. Install suction and discharge piping equal to or greater than size of pump nozzles. Refer to Division 22 Section "Domestic Water Piping."

1. Install flexible connectors adjacent to pumps in suction and discharge piping of the following pumps:

a. Separately coupled, in-line centrifugal pumps.

b. Separately coupled, horizontally mounted, in-line centrifugal pumps.

DOMESTIC WATER CIRCULATION PUMPS 22 11 23 - 6

c. Close-coupled, horizontally mounted, in-line centrifugal pumps.

d. Close-coupled, vertically mounted, in-line centrifugal pumps.

2. Install shutoff valve and strainer on suction side of pumps, and check valve and throttling valve on discharge side of pumps. Install valves same size as connected piping. Refer to Division 20 Section "Valves" for general-duty valves for domestic water piping and Division 22 Section "Domestic Water Piping Specialties" for strainers.

3. Install pressure gages at suction and discharge of pumps. Install at integral pressure-gage tappings where provided or install pressure-gage connectors in suction and discharge piping around pumps. Refer to Division 20 Section "Meters and Gages" for pressure gages and gage connectors.

D. Ground equipment according to Division 26 Section "Grounding and Bonding."

E. Connect wiring according to Division 26 Section "Conductors and Cables."

F. Connect thermostats to pumps that they control.

G. Interlock pump with water heater burner and time delay relay.

3.5 STARTUP SERVICE

A. Engage a factory-authorized service representative to perform startup service.

1. Complete installation and startup checks according to manufacturer's written…