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TranSystems Corporation - LGM Construction

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501070099 Federal Express Oakland Sort Expansion Issued for Bid 10/11<br />

2.5 GAS WATER HEATER<br />

A. Water heater shall consist of a glass lined steel tank encased within an insulated steel outer jacket<br />

with power direct vent, fully condensing, 96% thermal efficiency, suitable for PVC vent and<br />

combustion air inlet pipe. Finish shall be baked enamel. Tank shall be rated for 150 psig working<br />

pressure. Provide AGA approved gas train complete with all controls pre-wired and pre-piped to<br />

the unit including a 100 percent safety shutoff in case of malfunction or ignition failure. Anode<br />

rods, ASME rated temperature and pressure relief valve, tank drain, valve magnesium anode rod,<br />

and cold water dip tube. Performance shall meet current ASHRAE Standard 90.1. Provide 5 year<br />

warranty.<br />

B. Water heaters shall have capacities as scheduled on Drawings.<br />

C. Water heater shall be by A.O. Smith or Rheem.<br />

2.6 SHOCK ABSORBER<br />

A. Shock absorber(s) shall be permanently sealed bellows or piston type. Install in the water piping<br />

at locations shown on the Drawings and where required to provide a shock-free system. Shock<br />

absorbers shall be sized in accordance with PDI WH-201 and shall conform to ASSE 1010.<br />

B. Shock absorber shall be Josam 75000 Series or similar by Wade, Zurn, Smith, or Amtrol.<br />

2.7 TRAP PRIMER VALVE<br />

A. Provide brass trap primer valve with O-ring seals. Pressure Range: 35 to 75 psig. Valve shall<br />

automatically operate upon a 5 to 10 psig pressure drop in cold water line.<br />

B. Trap primer valve shall be PR-500 by Precision Plumbing Products or equal.<br />

2.8 TRAP PRIMER DISTRIBUTION UNIT<br />

A. Provide distribution unit to meter water from trap primer valve to up to 4 drain traps.<br />

B. Distribution unit shall be DU-2 through 4 by Precision Plumbing Products or equal.<br />

2.9 BACKFLOW PREVENTER<br />

A. Backflow preventer(s) shall be a complete FDA approved assembly consisting of strainer, epoxy<br />

coated, inlet and outlet valve, and approved devices to prevent backflow. Backflow preventer shall be<br />

reduced pressure principle type. Provide air gap and test kit.<br />

B. Backflow preventer shall be Watts Series 909 reduced pressure principle backflow preventer, or similar<br />

by Cla-Val Company.<br />

C. Air gap & test kit shall be Watts Regulator Co. 909 AG and No. TK-9 respectively, or similar by Cla-Val<br />

Company.<br />

DOMESTIC WATER SYSTEM 15401-3

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