| General |
| |
| Recovery |
| |
| Electric |
| |
|
Provide
a quantity of ________ heavy-duty marine electric water heater(s)
Model No. ________ as manufactured by HUBBELL Electric Heater
Co., Stratford CT. The water heater shall be constructed specifically
for shipboard installation utilizing deck and bulkhead mounting
supports that are integrally welded to the pressure vessel. The
entire water
heater shall meet USCG regulations and be ABS listed and approved
for marine use and shall be complete with all operating controls
requiring only plumbing and electrical service connections. The
tank shall be all welded steel commercial construction designed
for 100psi
working pressure and contain ________ gallons of storage. The
tank
shall be lined with seamless Hydrastone cement to a minimum thickness
of 1/2" on 100% of all interior tank surfaces. ( • Optional
Specification: Tank to be fabricated from solid copper-silicon alloy
or type 316L stainless steel. For this option no internal lining
is required due to the non-ferrous materials used in construction
of the pressure vessel. ) The tank shall not require any type of
anodic protection. The tank shall be designed and fabricated with
non-ferrous copper-silicon threaded tappings and non-ferrous inlet
and outlet piping for maximum corrosion resistance. Steel tank tappings
will not be acceptable. The entire tank shall be insulated with a
minimum of 2" thick polyurethane foam insulation and exceed
the latest ASHRAE standard for stand-by heat loss. The complete
heater shall be supplied with a high impact colorized composite
protective
jacket which cannot rust or corrode and does not require painting.
The unit shall bear the ABS approval mark certifying the entire
water heater.
The heater shall be supplied with separate cold water and hot
water connections. Water entering the cold water inlet shall
be deflected
by means of a baffle within
the tank. Dip tubes shall not be accepted. The hot water outlet shall include
a built-in heat trap to prevent hot water from radiating out from the heater
during standby periods. A separate 3/4" FNPT connection shall be provided
for mounting a combination safety temperature and pressure relief valve.
A 3/4" GHT
connection is supplied for draining. An ASME rated automatic reseating combination
temperature and pressure safety valve set at 100psi and 210 °F shall be
factory supplied.
|
The heating
element(s) shall be high quality incoloy sheathed immersion type
and rated at a total
of ______ KW that will heat ______ GPH of water at ______ ° F rise ( ______
to ______° F ). |
The heater
shall be designed to operate at ________ volts ________ phase ________
Hz (balanced) with all necessary operating controls factory mounted,
wired and tested. Each circuit shall be independently operated through
a definite purpose magnetic contactor rated for 100,000 cycles. Water
temperature shall be controlled through an adjustable thermostat.
An over-temperature manual reset hi-limit shall be factory installed
to disconnect all conductors to the heating element(s) in the event
of an over temperature condition in the pressure vessel.
In addition, the water heater shall be supplied with the following options:
• Option: ________________
• Option: ________________
• Option: ________________
The water heater manufacturer shall warranty all electrical 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 full five (5) years Non Pro Rated ( • Optional
Specification: Full ten (10) years Non Pro-Rated Tank Warranty ) from date of
start-up, provided that the unit is started within three (3) months of date of
shipment and installed and operated within the scope of the tank design and operating
capability. Each water heater shall be shipped with a complete set of installation
and operating instructions including spare parts list and approved drawings. |
|
