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
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
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.)
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
CAUTION
To avoid possible leaks, do not back out or loosen any pipe fittings.
CAUTION
Do not connect the heater directly to a boiler or furnace coil or any other uncontrolled temperature source, or the thermostat could be damaged causing the unit to overheat.
WARNING
To avoid injury or damage to dishwashing equipment do not connect Hatco Electric Booster Water Heaters to domestic (consumer) dishmachines or other domestic utilized equipment.
WARNING
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.
WARNING
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
WARNING
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.
Form No. | 20 |