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INSTALLATION
CAUTION
To assure proper operation do not use an anti-
siphon or check valve on the incoming water
line.
PRESSURE REDUCING VALVE
CAUTION
If water supply pressure to the booster inlet is
over 20 psi (138 kPa) during flow, install Hatco
pressure reducing valve with built-in bypass,
Hatco part number 03.02.004.00, for proper
operation of dishwater rinse nozzles.
NOTE: The pressure reducing valve must be the
type equipped with a high pressure bypass as
supplied by Hatco.
Proper operation of the commercial dishwasher
rinse nozzles requires available water pressure at
the rinse nozzle be between 15 and 25 psi (103 and
172 kPa) when nozzle is operated. 20 psi (138 kPa)
is recommended. If water pressure available to the
booster heater inlet is over 20 psi (138 kPa), a
pressure reducing valve must be installed in the hot
water supply line to the booster heater and adjusted
to deliver 20 psi (138 kPa) flow pressure.
The valve supplied by Hatco with the unit, Hatco
part number 03.02.004.00, has a built-in high
pressure bypass which prevents excessive pressure
build-up as the booster heats up. Final adjustment
required at time of installation.
TEMPERATURE/PRESSURE GAUGES
CAUTION
Hatco requires that two temperature/pressure
gauges, Hatco part number 03.01.003.00, be
installed to assure proper operation. Install one
in the supply line before the pressure reducing
valve and one in the outlet line as close to the
booster heater as possible. This provides a
visual check of the water temperature and
pressure before and after the water heater.
NOTE: If a check valve is installed and cannot be
removed install a back pressure relief valve, Hatco
part number 03.02.039.00, set at 125 psi (862 kPa)
on the incoming line between the pressure reducing
valve and the inlet to the booster heater. Discharge
must be to open site drain. (See Figure 13.)
Form No. EBOOSTERM-0406
BLENDED PHOSPHATE WATER
TREATMENT SYSTEM (OPTIONAL)
Hatco recommends that the Blended Phosphate
Water Treatment System be installed with unions on
the incoming 3/4" water supply line after the
pressure reducing valve and before the booster
heater.
Cartridges supplied have a usage rating of 100,000
gallons (378,541 liters) of water. To assure proper
operation the cartridges must be replaced when
expired.
NOTE: Product failure caused by liming or sediment
buildup is not covered under warranty.
PLUMBING CONNECTIONS
To avoid possible leaks, do not back out or
loosen any pipe fittings.
Do not connect the heater directly to a boiler or
furnace
coil
or
temperature source, or the thermostat could be
damaged causing the unit to overheat.
To avoid injury or damage to dishwashing
equipment do not connect Hatco Electric
Booster Water Heaters to domestic (consumer)
dishmachines
or
equipment.
To avoid any injury or damage to equipment and
to assure proper operation do not connect an
expansion tank of any type to booster heater
water lines.
To avoid personal injury or damage to the unit
aftermarket covers must not be placed on or
over the booster heater. Doing so can cause
temperature and moisture build-up resulting in
premature failure and electrical shock.
To avoid personal injury or damage to the Hatco
Electric Booster Water Heater, only use
plumbing material suitable for a minimum water
temperature of 200°F (93°C). Materials used
must meet National Sanitation Foundation (NSF)
specifications and all local plumbing codes and
regulations.
20
CAUTION
CAUTION
any
other
uncontrolled
WARNING
other
domestic
WARNING
WARNING
WARNING
utilized
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