36E77619B0003-0003005.pdf

Construct Two Green Homes – Project 550-316 22 11 00 Department of Veterans Affairs Facility Water Distribution

21 11 00 - 1

SECTION 22 11 00

FACILITY WATER DISTRIBUTION

2/19

PART 1 - GENERAL

1.1 DESCRIPTION

A. Domestic water systems, including piping, equipment and all necessary accessories as designated in this section.

1.2 RELATED WORK

A. Section 07 84 00, FIRESTOPPING.

B. Section 09 91 00, PAINTING.

C. Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING.

D. Section 23 07 11, HVAC, PLUMBING, AND BOILER PLANT INSULATION, PIPE

INSULATION.

E. SECTION 22 08 00, COMMISSIONING OF PLUMBING SYSTEMS: Requirements for commissioning, systems readiness checklist, and training.

1.3 SUBMITTALS

A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT

DATA, AND SAMPLES.

B. Manufacturer's Literature and Data:

1. All items listed in Part 2 - Products.

1.4 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. American National Standards Institute (ANSI):

American Society of Mechanical Engineers (ASME): (Copyrighted Society)

A13.1...................Scheme for Identification of Piping Systems

B16.3-2011..............Malleable Iron Threaded Fittings Classes 150 and 300

B16.9-2007..............Factory-Made Wrought Butt Welding Fittings

B16.11-2011.............Forged Fittings, Socket-Welding and Threaded

B16.12-2009 ............Cast Iron Threaded Drainage Fittings

B16.15-2006 ............Cast Copper Alloy Threaded Fittings Classes 125 and 250

B16.18-2001 (R2005).....Cast Copper Alloy Solder-Joint Pressure

Fittings

B16.22-2012.............Wrought Copper and Copper Alloy Solder Joint

Pressure Fittings

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B16.51-2011.............Copper and Copper Alloy Press-Connect Fittings

NSF/ANSI 61-2012........Drinking Water System Components - Health

Effects

C. American Society for Testing and Materials (ASTM):

A47/A47M-99(2009).......Ferritic Malleable Iron Castings

A53/A53M-12.............Pipe, Steel, Black and Hot-Dipped, Zinc Coated

Welded and Seamless

A183-03(2009)...........Carbon Steel Track Bolts and Nuts

A269–10.................Seamless and Welded Austenitic Stainless Steel

Tubing for General Service

A312/A312M-12...........Seamless, Welded, and Heavily Cold Worked

Austenitic Stainless Steel Pipes

A403/A403M-12...........Wrought Austenitic Stainless Steel Piping

Fittings

A536-84(2009)...........Ductile Iron Castings

A733-03(2009)e1.........Welded and Seamless Carbon Steel and Austenitic

Stainless Steel Pipe Nipples

B32-08..................Solder Metal

B61-08..................Steam or Valve Bronze Castings

B62-09..................Composition Bronze or Ounce Metal Castings

B75/B75M-11.............Seamless Copper Tube

B88-09..................Seamless Copper Water Tube

B584-12a................Copper Alloy Sand Castings for General

Applications

B687-99(2011)...........Brass, Copper, and Chromium-Plated Pipe Nipples

D1785-12................Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120

D2000-12................Rubber Products in Automotive Applications

D4101-11................Propylene Plastic Injection and Extrusion

Materials

D2564-04(2009) e1.......Solvent Cements for Poly (Vinyl Chloride) (PVC)

Plastic Pipe and Fittings

E1120-08................Liquid Chlorine

E1229-08................Calcium Hypochlorite

D. American Water Works Association (AWWA):

C110/A21.10-12..........Ductile Iron and Gray Iron

C151/A21.51-09..........Ductile-Iron Pipe, Centrifugally Cast

C153/A21.53-11..........Ductile-Iron Compact Fittings

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C203-08.................Coal-Tar Protective Coatings and Linings for

Steel Water Pipelines - Enamel and Tape - Hot

Applied

C213-07.................Fusion Bonded Epoxy Coating for the Interior &

Exterior of Steel Water Pipelines

C651-05.................Disinfecting Water Mains

E. American Welding Society (AWS):

A5.8/A5.8M-2011.........Filler Metals for Brazing

F. American Society of Sanitary Engineers (ASSE):

ANSI/ASSE 1001-2008.....Pipe Applied Atmospheric Type Vacuum Breakers

ANSI/ASSE 1010-2004.....Water Hammer Arresters

ANSI/ASSE 1018-2001.....Trap Seal Primer Valves – Potable Water

Supplied

ANSI/ASSE 1020-2004.....Pressure Vacuum Breaker Assembly

G. International Code Council (ICC)

ICC IPC (2012)..........International Plumbing Code

H. NSF International (NSF)

NSF/ANSI 14 (2013)......Plastics Piping System Components and Related

Materials

NSF/ANSI 61 (2012)......Drinking Water System Components – Health

Effects

NSF/ANSI 372 (2011).....Drinking Water System Components – Lead Content

I. Plumbing and Drainage Institute (PDI):

PDI WH-201 2010.........Water Hammer Arrestor

1.5 QUALITY ASSURANCE

A. A certificate of Welder’s certification shall be submitted prior to welding of steel piping. The certificate shall be current and no more than one year old.

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

C. All castings used for coupling housings, fittings, valve bodies, shall be date stamped for quality assurance and traceability.

1.6 SPARE PARTS

A. For mechanical press-connect fittings, provide tools required for each pipe size used at the facility.

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PART 2 - PRODUCTS

2.1 MATERIALS

A. Material or equipment containing a weighted average of greater than

0.25 percent lead shall not be used in any potable water system intended for human consumption, and shall be certified in accordance with NSF/ANSI 61 or NSF 372. Endpoint devices used to dispense water for drinking shall meet the requirements of NSF/ANSI 61, Section 9.

B. Plastic pipe, fittings, and solvent cement shall meet NSF/ANSI 14 and shall be NSF listed for the service intended.

2.2 UNDERGROUND WATER SERVICE CONNECTIONS TO BUILDINGS

A. From inside face of exterior wall to a distance of approximately 5 feet

(1500 mm) outside of building and underground inside building, material to be the same for the size specified inside of the building.

B. Three inches (75 mm) Diameter and Over: Ductile iron, AWWA C151, 125 psi (850 kPa) water steam pressure (WSP), exterior bituminous coating, and cement lined. Provide flanged and anchored connection to interior piping.

C. Under 3 inch (75 mm) Diameter: Copper tubing, ASTM B88, Type K, seamless, annealed. Fittings as specified under Article 2.2, INTERIOR

DOMESTIC WATER PIPING. Use brazing alloys, AWS A5.8, Classification

BCuP.

2.3 ABOVE GROUND (INTERIOR) WATER PIPING

A. Pipe: Copper tube, ASTM B88, Type K or L, drawn.

B. Fittings for Copper Tube:

1. Wrought copper or bronze castings conforming to ANSI B16.18 and

B16.22. Unions shall be bronze, MSS SP72 & SP 110, Solder or braze joints. Use 95/5 tin and antimony for all soldered joints.

2. Grooved fittings, 2 to 6 inch (50 to 150 mm) wrought copper ASTM B75

C12200, 5 to 6 inch (125 to 150 mm) bronze casting ASTM B584, CDA

844. Mechanical grooved couplings, ductile iron, ASTM A536 (Grade

65-45-12), or malleable iron, ASTM A47 (Grade 32510) housing, with

EPDM gasket, steel track head bolts, ASTM A183, coated with copper colored alkyd enamel.

3. Mechanical press-connect fittings for copper pipe and tube shall conform to the material and sizing requirements of ASME B16.51, 2 inch (50 mm)size and smaller mechanical press-connect fittings, double pressed type, with EPDM (ethylene propylene diene monomer)

21 11 00 - 5 non-toxic synthetic rubber sealing elements and un-pressed fitting identification feature.

4. Mechanically formed tee connection: Form mechanically extracted collars in a continuous operation by drilling pilot hole and drawing out tube surface to form collar, having a height of not less than three times the thickness of tube wall. Adjustable collaring device shall ensure proper tolerance and complete uniformity of the joint.

Notch and dimple joining branch tube in a single process to provide free flow where the branch tube penetrates the fitting. Braze joints.

C. Adapters: Provide adapters for joining screwed pipe to copper tubing.

D. Solder: ASTM B32 Composition Sb5 HA or HB. Provide non-corrosive flux.

E. Brazing alloy: AWS A5.8, Classification BCuP.

2.4 EXPOSED WATER PIPING

A. Finished Room: Use full iron pipe size chrome plated brass piping for exposed water piping connecting fixtures, casework, cabinets, equipment and reagent racks when not concealed by apron including those furnished by the Government or specified in other sections.

1. Pipe: Fed. Spec. WW-P-351, standard weight.

2. Fittings: ANSI B16.15 cast bronze threaded fittings with chrome finish.

3. Nipples: ASTM B 687, Chromium-plated.

4. Unions: Mss SP-72, SP-110, Brass or Bronze with chrome finish.

Unions 2-1/2 inches (65 mm) and larger shall be flange type with approved gaskets.

B. Unfinished Rooms, Mechanical Rooms and Kitchens: Chrome-plated brass piping is not required. Paint piping systems as specified in Section 09

91 00, PAINTING.

2.5 TRAP PRIMER WATER PIPING:

A. Pipe: Copper tube, ASTM B88, type K, hard drawn.

B. Fittings: Bronze castings conforming to ANSI B16.18 Solder joints.

C. Solder: ASTM B32 composition Sb5. Provide non-corrosive flux.

2.6 STRAINERS

A. Provide on high pressure side of pressure reducing valves, on suction side of pumps, on inlet side of indicating and control instruments and equipment subject to sediment damage and where shown on drawings.

Strainer element shall be removable without disconnection of piping.

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B. Water: Basket or "Y" type with easily removable cover and brass strainer basket.

C. Body: Smaller than 3 inches (80 mm), brass or bronze; 3 inches (80 mm) and larger, cast iron or semi-steel.

2.7 DIELECTRIC FITTINGS

A. Provide dielectric couplings or unions between ferrous and non-ferrous pipe.

2.8 STERILIZATION CHEMICALS

A. Hypochlorite: ASTM E1120-08

B. Liquid Chlorine: ASTM E1229-08

2.9 WATER HAMMER ARRESTER:

A. Closed copper tube chamber with permanently sealed 60 psig (410 KpA) air charge above a Double O-ring piston. Two high heat Buna-N 0-rings pressure packed and lubricated with FDA approved silicone compound. All units shall be designed in accordance with ASSE 1010 for sealed wall installations without an access panel. Size and install in accordance with Plumbing and Drainage Institute requirements (PDI-WH 201). Provide water hammer arrestors at:

1. All solenoid valves.

2. All groups of two or more flush valves.

3. All quick opening or closing valves.

4. All medical washing equipment.

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2.10 WATER MONITORING SYSTEM

A. Fixed system:

1. Sensors: PH, Conductivity, Temperature, and Oxidant Residual. The system will monitor the water quality, incoming building water pressure and communicates the data via the existing VAIHCS Building

Management System (BMS) Network. Data received from analog sensors shall be received by new Johnson Controls FX-PC series programmable controllers, Model FX-PCG26 with expansion I/O modules FX-PCX. In each new building’s main mechanical room, provide water quality monitoring points (3 locations) and monitoring point for incoming building water pressure. Install new Johnson Controls FX-60E BMS

Network supervisory device to connect the FX-PCG26 TO. Install new

Black Box fiber switch to connect the FX-60E device TO and to establish communications to existing VAIHCS BMS network. Install 4 new water monitor sensors (PH, Temperature, Dissolved Solids and

Oxidant Residual) at each water quality monitoring point. Connect

4-20 mA wiring from sensors to new FX-PC device input terminals.

Coordinate with VAIHCS BMS controls contractor, Conserv Building

Automation Systems, for programming, integration, and commissioning of new monitoring system points to existing BMS.

2. Conductivity (Dissolved Solids) Sensor Specifications

a. Accuracy: ± 2 % of reading above 200 µS/cm

b. Cable Length: 20 fixed cable (6 wire, 4 conductors and two isolated shield wires)

c. Cell Constant k: 5

d. Diameter: 0.5 in ( 12.7 mm )

e. Electrode Material: Titanium

f. Flow: 0 to 3 m/s maximum, fully immersed

g. Length: 7.6 in ( 193.5 mm )

h. Material: Compression Fitting: KYNAR (PVDF)

i. Measurement Range 2: 0.002 to 20 MΩ resistivity

j. Operating Temperature Range: -20 to 200 °C

k. Pressure Range: 1.7 bar at 150 °C

l. Range: 0 to 100 µS/cm conductivity

m. Repeatability: ± 0.5 % of reading

n. Response Time T90: 30 s

o. Sensitivity:

1) ± 0.5 of reading

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p. Sensor Immersion Depth: 155 mm

q. Sensor Thread: NPT

r. Output:4 to 20 mA

3. Oxidant Residual Level

a. Measuring Range: 0 to 5 mg free chlorine

b. Measuring Range: 0 to 5 mg/L for monochloramine

c. Measuring Range: 0 to 3 mg/L for chlorine dioxide

d. Output 4-20mA

4. Chlorine Dioxide Sensor

a. Measuring Range: 0 to 10 ppm

b. pH Range: Range: 6.0 to 9.5

c. Mounting Size: Flow Cell ¼”

d. Body Material: PVC

e. Temperature Range: 0 to 50°C (32 to 122°F)

f. Temperature Compensation: Integrated

g. Maximum Pressure: 14.7 PSI (1 bar)

h. Cable Length: 25’

i. Output: 4 to 20 mA

j. Flow Range:

1) Minimum: 1 GPM

2) Maximum: 5 GPM

k. Supply Voltage: 24 Vdc

5. Temperature Sensor

a. Body: Stainless steel AISI 316L

b. Probe Length: 13 mm (0.51") and 24 mm (0.94")

c. Diameter: Ø 3 mm (0.1")

d. Probe Type: Thermowell AISI 316L SS

e. Probe Minimum Bending Radius: Three-times the outer diameter

[except the sensing tip which length is 30 mm (1.2")]

f. Connection: 1/8 NPT male thread

g. Sensor: RTD PT100 class A up to 300°C in accordance to IEC751

h. Range: -50 to 120°C (-58 to 248°F)

i. Tmax. Electronic: 80°C (176°F)

j. Sensor Break Monitoring:

1) Selectable: Upscale (>21.0 mA) or downscale (<3.6 mA) action

2) Sensor Short-Circuit: Fixed to downscale (<3.6 mA) action

k. Output:

1) Signal: 4 to 20 mA

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2) Permissible Load: 700 @ 24 Vdc [RLo= (Vsupply-8,5)/0,020]

l. Default Factory Setting for 4 to 20mA output: 0 to 100°C

m. Response Time (90%): <50 ms

n. Isolation In-Out: Non-isolated

o. Power Supply: 8.5 to 32 Vdc (polarity protected)

p. Environment Conditions:

1) Temperature: -40 to 80°C (-40 to 176°F) for plastic body

2) Relative Humidity: 0 to 100%

3) EMC: In accordance to EN 61326

4) Degree of Protection: IP65 and IP67 in accordance to IEC60529

q. Accuracy:

1) Transmitter: Maximum of ±0.2°C or ±0.2% of span

2) Sensor: Class A in accordance to IEC751

r. Temperature Influence [Deviation from 20°C (68°F)]: Maximum of

±0.3°C/25°C (77°F) or ±0.3% of span/25°C (77°F)

s. Supply Voltage Influence: Negligible

t. Range Configurations: It is possible set the input temperature range (span) by the M12TX-CONFIG configuration kit (PC with OS

Windows required)

u. Zero Adjustments: Any value between -50 to 50°C

v. Minimum Span: 50°C (122°F) [if the zero value is set between one of these values: -40°C (-40°F), -20°C (-4°F), 0°C (32°F), 20°C

(68°F), 40°C (104°F), the minimum span is 20°C (68°F) rather than 50°C (122°F)] Sensor Error Compensation: Over 2 points

(maximum 1% of span)

w. Factory Setting: 0 to 100°C/sensor break >21 mA (upscale)

x. Response Time: Diameter 3 mm <3.5 seconds, diameter 6 mm <13 seconds (test in water to IEC751- time for reaching 63.2% of instantaneous temperature change).

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B. Portable Sampling system:

1. Two Portable Sampling kits shall be provided. A water sampling kit will be provided for the portable unit allowing the lab technician to easily connect to a sampling port and immediately begin taking readings. The sampling kit will simply plug into a sampling location plumbing port via quick connect couplers. The sampling kit and portable unit are designed to either take a quick data sample, or leave in place for an extended period. The sampling kit includes two sensor kits (hot and cold) plus one spare. Each kit is in its own case to prevent cross contamination.

2. A construction jig will be built and provided so that the contractors can easily configure the sampling locations to match the sampling kit. This jig will be an exact replica of the real kit minus the sensors and valves insuring a proper fit.

The portable sampling kit features the same data reporting options as the fixed system. This equipment will be mounted in a protective equipment case for ease of use and protection of the equipment. The portable unit will report data in real time via a wireless network to the BMS in the same manner as the fixed system. The portable unit will possess local data logging capability for areas without wireless access. To help with wireless coverage each master panel will contain a wireless access point. Locally, the lab technician taking the sample can read data from the operator interface terminal mounted in the case. This terminal will be capable of displaying the current data readings.

PART 3 - EXECUTION

3.1 INSTALLATION

A. General: Comply with the International Plumbing Code and the following:

1. Install branch piping for water from the piping system and connect to all fixtures, valves, cocks, outlets, casework, cabinets and equipment, including those furnished by the Government or specified in other sections.

2. Pipe shall be round and straight. Cutting shall be done with proper tools. Pipe, except for plastic and glass, shall be reamed to full size after cutting.

3. All pipe runs shall be laid out to avoid interference with other work.

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4. Install union and shut-off valve on pressure piping at connections to equipment.

5. Pipe Hangers, Supports and Accessories:

a. All piping shall be supported per the International Plumbing

Code.

b. Shop Painting and Plating: Hangers, supports, rods, inserts and accessories used for pipe supports shall be shop coated with red lead or zinc chromate primer paint. Electroplated copper hanger rods, hangers and accessories shall be used with copper tubing.

c. Floor, Wall and Ceiling Plates, Supports, Hangers:

1) Solid or split un-plated cast iron.

2) All plates shall be provided with set screws.

3) Pipe Hangers: Height adjustable clevis type.

4) Adjustable Floor Rests and Base Flanges: Steel.

5) Concrete Inserts: "Universal" or continuous slotted type.

6) Hanger Rods: Mild, low carbon steel, fully threaded or

Threaded at each end with two removable nuts at each end for positioning rod and hanger and locking each in place.

7) Riser Clamps: Malleable iron or steel.

8) Rollers: Cast iron.

9) Self-drilling type expansion shields shall be "Phillips" type, with case hardened steel expander plugs.

10) Hangers and supports utilized with insulated pipe and tubing shall have 180o (min.) metal protection shield Centered on and welded to the hanger and support. The shield shall be 4 inches in length and be 16 gauge steel. The shield shall be sized for the insulation.

11) Miscellaneous Materials: As specified, required, directed or as noted on the drawings for proper installation of hangers, supports and accessories. If the vertical distance exceeds 6 m

(20 feet) for cast iron pipe additional support shall be provided in the center of that span. Provide all necessary auxiliary steel to provide that support.

12) With the installation of each flexible expansion joint, provide piping restraints for the upstream and downstream section of the piping at the flexible expansion joint.

Provide calculations supporting the restraint length design and type of selected restraints.

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6. Install chrome plated cast brass escutcheon with set screw at each wall, floor and ceiling penetration in exposed finished locations and within cabinets and millwork.

7. Penetrations:

a. Fire Stopping: Where pipes pass through fire partitions, fire walls, smoke partitions, or floors, install a fire stop that provides an effective barrier against the spread of fire, smoke and gases as specified in Section 07 84 00. Completely fill and seal clearances between raceways and openings with the fire stopping materials.

b. Waterproofing: At floor penetrations, completely seal clearances around the pipe and make watertight with sealant as specified in

Section 07 92 00.

8. Mechanical press-connect fitting connections shall be made in accordance with the manufacturer’s installation instructions. Depth of insertion shall be marked on the tube prior to inserting the tube into the fitting. Ensure the tube is completely inserted to the fitting stop (appropriate depth) and squared with the fitting prior to applying the pressing jaws onto the fitting. The joints shall be pressed using the tool(s) approved by the manufacturer. Minimum distance between fittings shall be in accordance with the manufacturer’s requirements. When the pressing cycle is complete, visually inspect the joint to ensure the tube has remained fully inserted, as evidenced by the visible insertion mark.

B. Piping shall conform to the following:

1. Domestic Water:

a. Grade all lines to facilitate drainage. Provide drain valves at bottom of risers and all low points in system. Design domestic hot water circulating lines with no traps.

b. Connect branch lines at bottom of main serving fixtures below and pitch down so that main shall be drained through fixture. Connect branch lines to top of main serving only fixtures located on floor above.

3.2 TESTS

A. General: Test system either in its entirety or in sections. Submit testing plan to the COR, 14 calendar days prior to test date.

B. Potable Water System: Test after installation of piping and domestic water heaters, but before piping is concealed, before covering is

21 11 00 - 13 applied, and before plumbing fixtures are connected. Fill systems with water and maintain hydrostatic pressure of 150 psi (1040 kPa) gage for two hours. No decrease in pressure is allowed. Provide a pressure gage with a shutoff and bleeder valve at the highest point of the piping being tested.

C. Re-agent Grade Water Systems: Fill system with water and maintain hydrostatic pressure of 200 psi (1040 kPa) gage during inspection and prove tight.

D. All Other Piping Tests: Test new installed piping under 1-1/2 times actual operating conditions and prove tight.

3.3 STERILIZATION

A. After tests have been successfully completed, thoroughly flush and sterilize the interior domestic water distribution system in accordance with AWWA C651.

B. Use liquid chlorine or hypochlorite for sterilization.

3.4 COMMISSIONING

A. Provide commissioning documentation accordance with the requirements of

Section 22 08 00.

B. Components provided under this section of the specification shall be tested as part of a larger system.

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