NOTE:
Do not run a cold water line to the heater.
OUTLET
Using a 3/4 in. union and piping connect the booster heater water outlet to the dishwasher sanitizing rinse pipe connection.
NOTE:
Be certain the connection is made to the final rinse and not to the wash tank.
Install a temperature/pressure gauge in outlet line. Water temperature at outlet should be 180°F (82°C). The temperature sensing element
must be in water stream.
Manufacturer recommends a shock absorber be installed in the outlet line as close as possible to the dishwasher The shock absorber softens the water hammer caused by automatic dishwasher valves.
INSTALLATION CHECK
INSTALLATION CHECK
1.Close drain pipe valve and fill booster heater with water.
2.Check all pipe connections for installation leaks.
3.Check relief valve discharge opening to be certain it is not blocked.
4.Vent air from tank before operating.
CAUTION !!
Leave tank filled with water during electrical hookup to prevent possible element burnout.
BOOSTER HEATER SERVICE
PROCEDURES
WATER REACHES 180ºF (82ºC), BUT DOES NOT MAINTAIN 180ºF THROUGH THE ENTIRE DISHWASHING OPERATION.
CAUSE A
Low incoming temperature, particularly during peak operational periods, is the most common cause of this condition. If incoming temperature is correct at the start of the dishwashing operation, check again at the end. It is possible for the supply of 140ºF (60ºC) water to be exhausted during the washing cycle.
SOLUTION - If incoming temperature is 140ºF (60ºC) at the start of the washing cycle, but falls below at the end, the primary water heater is not delivering sufficient 140ºF (60ºC) water and the condition is correctable with installation of a commercial primary water heater model of the correct size. Contact your representative to assure proper sizing of the primary heater.
CAUSE B
If incoming water temperature is correct and it holds through the dishwashing operation, another possible reason for this condition is that the water pressure may be too high. Water pressure to the dishwasher must be approximately 20 psi for proper operation of the booster and dishwasher rinse cycle.
SOLUTION - If pressure exceeds 20 psi with the dishwasher rinse valve open, install a pressure reducing valve with built in bypass check.
CAUSE C
The booster may be undersized.
SOLUTION - Check the dishwasher model with the sizing guide to be sure the correct booster has been installed.
CAUSE D
The booster may have been ordered with improper voltage.
SOLUTION - Consult specifications plate on the booster. Voltage and amperage are clearly marked. Check this infor- mation against the service to which it is connected. If heater was incorrectly specified consult factory for instructions.
CAUSE E
A low voltage condition may exist. Low voltage is a common cause on large model heaters.
SOLUTION - Verify wire size and circuit for the application.
THE BOOSTER HEATER DOES NOT HEAT AT ALL OR ONLY DELIVERS
CAUSE A
Sometimes upon completion of an installation, the booster operation is checked by energizing the heater before the tank is completely filled with water. When elements of the immersion type are not completely covered by water at the time the heater is turned ON, the high temperature in the tank may damage the element(s) unless the unit has been equipped with a low water
SOLUTION - Damaged elements must be replaced.
NOTE:
Thermostats should also be inspected. Elements damaged by overheating in “dry” environment can easily damage thermostats.
CAUSE B
Fuses may be blown or circuit breaker tripped.
SOLUTION - Inspect the fuses or circuit breaker and refer to data sheet for the booster model installed. If undersized fuses or circuit breakers were installed, replace with size recommended in the data sheet. See Section “Booster repeatedly blows fuses or trips circuit breakers.”
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