Radha Krishna Temple Construction
PLUMBING
PLUMBING EQUIPMENT
P A R T 1 - G E N E R A L
SCOPE
This section includes specifications for water heaters, water softeners, pumps and other equipment used for plumbing applications. Included are the following topics:
PART 1 - GENERAL
Scope
Related Documents
Reference
Quality Assurance
Shop Drawings
Operation and Maintenance Data
PART 2 - PRODUCTS
Water Heaters
Water Softeners
Sumps
Pumps
PART 3 - EXECUTION
Installation
Functional Performance Testing
Owner Training
REFERENCE
Applicable provisions of Division 1 shall govern work under this section.
SHOP DRAWINGS
Include data concerning dimensions, capacities, materials of construction, ratings, certifications, weights, pump curves with net positive suction head requirements, manufacturer's installation requirements, manufacturer's performance limitations, and appropriate identification.
OPERATION AND MAINTENANCE DATA
All operations and maintenance data shall comply with the submission and content requirements specified under section GENERAL REQUIREMENTS.
P A R T 2 - P R O D U C T S
Water heaters must meet Federal Energy Management Program (FEMP) and ASHRAE 90.1 efficiencies in addition to the Energy Code. Coordinate drawing and schedule efficiencies with specification efficiency requirements below
RESIDENTIAL GAS FIRED WATER HEATER
Manufacturers: American, A.O. Smith, Bock, Bradford White, Lochinvar, Rheem, Ruud, State.
Type: High efficiency natural gas fired atmospheric storage water heater. Design to be AGA certified with 5 year tank warranty and 1 year parts warranty.
Efficiency:
<50 gallons and <75,000 Btu/h Minimum Energy Factor = 0.67-(.0005 x rated volume)
Tank: Steel glass lined tank rated for 150 psig complete with removable magnesium anode rod, plastic diffuser type dip tube, inlet and outlet heat trap fittings, polyurethane foam insulation, painted steel jacket, draft hood, drain valve and temperature and pressure relief valve.
Burner: Construct burner of cast iron, aluminized steel (natural gas only) or stainless steel.
Controls: Self-generating controls consisting of operating thermostat with adjustable temperature control, energy cutoff, gas valve and integral pressure regulator.
COMMERCIAL POWERED GAS FIRED WATER HEATER
Manufacturers: A.O. Smith, Bock, Bradford White, PVI, Lochinvar, Rheem, Ruud, State.
Type: Commercial natural gas fired power burner storage water heater. Design to be National Board stamped and UL listed with 3 year tank and parts warranty. Water heater to include start-up and training by manufacturer's representative.
Efficiency:
>50 gallons or >75,000 Btu/h Minimum Thermal Efficiency = 80%
Maximum Standby Loss = (Q/800+110√V)
Q=Input Btu/h, V=Volume Gallons
Tank: Steel glass or nickel lined water leg type tank, ASME construction and stamp, rated for 160 psig complete with 6 removable magnesium anode rods, 2-4" tank access hand holes, foam or fiberglass insulation, painted steel jacket, drain valve and temperature and pressure relief valve per CSA rating..
Burner: Flame retention gas burner with pilot and main gas valves and regulators; 3500 RPM capacitor start fan; solenoid gas valve; air switch; pilot light; on-off switch; flame inspection port; intermittent ignition; flame safety control with pre-purge, flame rod and ultra-violet detector.
Controls: 120 volt, 1 phase, 60 Hz controls consisting of junction box, 24 volt transformer, dual bulb operating thermostat with adjustable temperature control and high limit control with manual reset.
HIGH EFFICIENCY STAINLESS STEEL COMMERCIAL GAS FIRED WATER HEATER
Manufacturers: Heat Transfer Products, Hamilton Engineering, PVI Conquest.
Type: Modulating gas fired sealed combustion condensing commercial water heater. Design to be AGA certified with 3 year tank warranty and 1 year parts warranty.
Efficiency: Minimum Thermal Efficiency = 94%
or
Minimum Thermal Efficiency = 93% and
Maximum Standby Loss (btu/hr) = .84 x (Q/800+110√V)
Q=Input Btu/h, V=Volume Gallons
Tank: 316L stainless steel or phase-balanced austenitic and ferritic duplex steel with minimum 21% chromium mill certified per ASTM A 923 Method A rated for 150 psig complete with stainless steel pipe fittings, submerged combustion chamber, 90/10 cupronickel or 316L stainless steel heat exchanger, insulation, plastic jacket, brass drain valve and temperature and pressure relief valve.
Burner: Side mounted stainless steel power burner.
Controls: 120 volt, 1 phase, 60 Hz self-diagnostic electronic microprocessor controls, intermittent spark or hot surface ignition, operating thermostat with 70o-180oF adjustable temperature control,
Energy cutoff with manual reset, blower pressure switch, gas valve and pressure regulator.
Vent: Schedule 40 solid wall CPVC with DWV fittings for flue gas outlet and schedule 40 solid wall PVC with DWV fittings for combustion air intake with solvent weld fittings and vent termination fitting.
Condensate Drain: PVC with solvent weld fittings. Drain neutralizer package.
WATER SOFTENERS
Select smaller water softening systems sized to handle no more than the service flow rate rather than larger tanks with less frequent regeneration or tanks on standby for extended periods of time. Select multiple tanks for systems with wide flow variations. Supply fixture unit tables based on Hunter’s curves are not corrected for water conserving fixtures and their use commonly results in oversizing. SPS 382.40(7) accepts and DFD recommends sizing based on a detailed engineering analysis to avoid oversizing of equipment. Reference Water Quality Association studies (Aquacraft 2001 single family residence, IAPMO/WQA/ASPE 2016 residential study by Univ. of Cincinnati). Idle conditions contribute to microbiologically induced corrosion and associated water quality concerns.
Manufacturers: Capital, Culligan, Hellenbrand, Kinetico, Water Right.
SUMPS
Fiberglass sump basin constructed of 25-30% fiberglass and 70-75% polyester resin with no fillers; minimum design safety factor of four; complete with tapped top flange; side hub fittings; bolted galvanized steel or aluminum (fiberglass) gasketed cover with inspection access plate, access plate with discharge pipe flange for each pump and control and vent flange where required. Minimum sump wall thickness as follows:
Wall Thickness (Inches)
Diameter 24 30 36 42 48 60 72
Max. 10' Depth 3/16 1/4 1/4 1/4 5/16 5/16 3/8
Max. 15' Depth 1/4 5/16 5/16 5/16 3/8 3/8 7/16
Max. 20' Depth 5/16 5/16 3/8 3/8 7/16 1/2 1/2
Specify anti-flotation flange and concrete ballast in high groundwater conditions.
Precast reinforced concrete manhole sections, ASTM C478. Construct base of 6" thick precast reinforced concrete or 8" thick cast in place concrete. Construct top of precast reinforced concrete or 6" thick reinforced concrete slab. Seal between sections with rubber ring gaskets, ASTM C443, or plastic preformed gasket material. Seal pipe penetrations with flexible watertight rubber gasketed seals. Provide bolted galvanized steel or aluminum gasketed cover with inspection access plate, access plate with discharge pipe flange for each pump and control and vent flange where required.
SUMP PUMPS
Manufacturer: Aurora/Hydromatic, Gould, Little Giant, Myers, Paco, Stancor, Sta-Rite, Weil, Zoeller.
Type: Submersible pumps constructed of epoxy coated cast iron shell, cast iron volute, two vane enclosed (semi-open, or recessed vortex) non-clog cast iron, bronze or thermoplastic impeller, stainless steel shaft, stainless steel fasteners, upper and lower ball bearings, oil lubricated or factory sealed grease lubricated, and ceramic mechanical seal.
Motor: Hermetically sealed, capacitor start, with built-in thermal overload protection sized for non-overloading over the entire pump curve.
CONTROLS:
Single On/Off float switch, UL listed.
Double (one On, one Off) float switch, UL listed.
Triple (1st pump On, 2nd pump on, both pumps Off) float switch, UL listed.
Four (1st pump On, 2nd pump on, both pumps Off, high level alarm) float switches, UL listed.
NEMA 1 indoor alarm panel with warning light, horn, silence switch, test switch and high level alarm switch, UL listed.
NEMA 4X outdoor alarm panel with warning light, horn, silence switch, test switch and high level alarm switch, UL listed.
Combination magnetic starter with fused disconnect switch, HOA switch, run light, resettable overload heaters, NEMA 1 (NEMA 4), UL listed.
Mechanical pump alternator with mechanical switch and float mechanism for control of 1st pump On, 2nd pump On, both pumps Off and alarm, with alarm panel, warning light, horn, silence switch, test switch, NEMA 1. (NEMA 4)
Electrical pump alternator and alarm panel with combination magnetic starter for each pump, fused disconnect switch, external HOA switch for each pump, run light for each pump, resettable overload heaters, warning light, horn, silence switch, test switch, labeled terminal switch and devices, auxiliary dry contact for remote alarm, UL listed components, NEMA 1 (NEMA 4).
Accessories:
· 10’ power cord.
· 20’ power cord.
· NEMA 4 junction box.
· Discharge check valve, fullport ball valve and union for each pump.
· Dual mechanical seals, seal leak detector probe and warning light in control panel.
· Dual stainless steel lift out guide rails with stainless steel wall, pump and sump brackets, bronze and neoprene quick disconnect fitting and corrosion proof pull chain or cable.
Electrical pump alternator and alarm panel with combination magnetic starter for each pump, fused disconnect switch, external HOA switch for each pump, run light for each pump, resettable overload heaters, warning light, horn, silence switch, test switch, labeled terminal switch and devices, auxiliary dry contact for remote alarm, UL listed components, NEMA 1 (NEMA 4).
Class 1, Group D, Division 1 explosion proof rated controls and switches.
Elapsed time meters.
P A R T 3 - E X E C U T I O N
INSTALLATION
Install plumbing equipment where indicated in accordance with manufacturer's recommendations. Coordinate equipment location with piping, ductwork, conduit and equipment of other trades to allow sufficient clearances. Locate equipment and arrange plumbing piping to provide access space for servicing all components.
Set commercial water heaters, commercial water softeners, storage tanks and booster pumps on concrete housekeeping pads. Adjust and level equipment.
Set sumps on compacted granular backfill adjusting for plumb and level. Backfill in even layers around sump with granular backfill.
Connect equipment to water and drain piping using unions or flanges and isolation valves. Water softener drain pipe and fittings to be solvent welded PVC/CPVC SDR 13.5. Water softener brine piping to be polyethylene as supplied by softener manufacturer or same as drain piping.
Connect pneumatic controls to compressed air source.
Size temperature and relief valves per CSA ratings. Pipe temperature and pressure relief valves to floor drain or floor as indicated.
Startup and test equipment adjusting operating and safety controls for proper operation.
Water Softener Startup: Do not fill water softeners with water or startup until building occupancy and active use to avoid stagnant conditions and resulting microbiological contamination. Maintain water softeners in dry bypass mode until active use. Program and cycle water softeners for specified minimum efficiency rating, regeneration cycle intervals and times, consumption, backflow rate, brine flow rate, variable reserve and proportional brining, etc. Program standby ion exchange media tanks into service every 12 hours for minimum of 1 tank full of water to pass through. Provide initial salt fill of brine tank. Test and report on untreated and treated water hardness, pH, iron and chlorine. For water softeners demonstrating efficiency through field sampling, meter analysis and adjustment; report field data confirming efficiency.
Lubricate pumps before startup. Adjust pumps for rated flow. Clean and blowdown strainers after 8 hours of operation.
Adjust compression tank precharge to scheduled minimum operating pressure prior to connecting to system.
FUNCTIONAL PERFORMANCE TESTING
Contractor is responsible for utilizing the functional performance test forms supplied under specification Section 22 08 00 in accordance with the procedures defined for functional performance testing in Section 01 91 01 or 01 91 02.
OWNER TRAINING
All training provided for agency shall comply with the format, general content requirements and submission guidelines specified under Section 01 91 01 or 01 91 02.
END OF SECTION
PLUMBING SPECIFICATIONS