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GENERAL
Provide a quantity of ______________point-of-use steam fired water heater(s) Model No. _______________ as
manufactured by Hubbell of Stratford, CT. The unit shall be vertically mounted and suitably insulated, jacketed, and provided with the proper steam operating controls. PRESSURE VESSEL
The tank shall be all welded steel commercial construction designed for 150 psi working pressure and contain _________________gallons of storage. The tank is to be lined with seamless
Hydrastone cement to a minimum thickness of 1/2" on 100% of all interior tank surfaces and does not require any type of anodic protection. The tank shall be designed and fabricated with copper-silicon threaded fittings and
non-ferrous inlet and outlet piping for maximum corrosion resistance. The cold water inlet shall be 11/2" Male NPT, the hot water outlet shall be 11/2"
Male NPT, the recirculation line shall be 3/4" Female NPT, and the drain shall be a 3/4" hose connection. A separate 3/4" Female NPT outlet is provided for relief valve installation. The entire tank is to be insulated with a minimum of 2" thick polyurethane foam insulation. The complete heater shall be supplied with a high impact colorized composite jacket which cannot rust or corrode and does not require painting. The vessel shall be protected by an approved ASME rated automatic reseating combination temperature and pressure safety relief valve.
RECOVERY
The immersion copper fin tube single wall (rOptional Specification:
Double wall ) heating coil shall be designed for a maximum allowable steam pressure of 125 psi.The coil shall be rated to heat_________ GPH from _________oF to ____________oF
when supplied with _______psi steam to the control valve with a maximum steam consumption of 211 Lbs/Hr. STEAM CONTROLS
All steam operating controls shall be factory supplied and shipped loose for in the field installation. (rOptional Specification:
All steam controls shall be factory piped and assembled ) The following items are supplied by the factory:
(1) _____ " Self Contained Temperature Control Valve (Steam Regulator) (1)______ " Steam Y Strainer (1) 1/2" Drip Trap (1) 1/2" Main Trap
In addition, the following optional equipment may be included:
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Option Dial water temperature and pressure gauge shall be factory installed in the tank; 3" Dial, 70-270oF, 0-200 psi/20-130oC, 0-1400 kPa
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Option Steam pressure reducing valve _______" size to limit the steam pressure to______ psi.
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Option A single solenoid safety system shall be factory supplied to close the steam supply to the heating coil in an over-temperature condition. (120 volt, 5 amp
required).
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Option A double solenoid safety system shall be factory supplied to close the steam supply to the heating coil as well as open a solenoid valve to send over-heated
water to drain. (120 volt, 5 amp required).
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Option The unit shall be factory supplied with an immersion electric heating element rated at ________ KW when supplied
with_______ Volts ________ Phase electrical power. The electric control panel shall include a thermostat, safety hi-temperature cut out device, and other required electrical components, and shall be
factory assembled, wired, and tested.
WARRANTY
The heater manufacturer shall warranty all components against defects in workmanship and material for a period of one (1) year from date of
start-up, and the pressure vessel for a period of five (5) years from date of start-up, provided that the unit(s) are started within three (3) months of date of shipment and installed and operated within the scope of the tank
design and operating capability. Each heater shall be shipped with a complete set of installation and operating instructions including spare parts list and approved drawings. |
