4. START UP AND OPERATION
COMPONENT LOCATION
SEQUENCE OF OPERATION
The booster heater is designed to maintain a tempera- ture of 180 deg. F (82.2 Deg. C) of 490 GPH water required for the rinse cycle of a commercial dish- washer. An inlet temperature of 140 Deg. F (60 Deg. C) will produce optimum results.
Provided the necessary power, water, gas and vent connections are completed, the unit is started by the activation of the on/off switch located on the left side panel. The blower motor and the circulator pump will also start.
Providing the operating and safety controls includ- ing the vent switch is closed, the ignition module will energize the ignitor. The hot surface ignitor then heats up, and is proven to be capable of ignition. The gas valve is then energized. The burner will be lit and the remote sensor will sense the flame. If the burner flame is not sensed within four seconds the gas valve will shut off. The ignition module will try for a total of three cycles to prove ignition. If, after third cycle ignition is not proven, the module will go into lockout, and a
off until the next call for heat. The operating limit control is factory set at 185°F. Combustion air blower and the circulator pump will cycle On/Off with the operating limit controller.
START UP PROCEDURES
SECTION 1. FILLING THE SYSTEM
Fill the heater system with water purging all air. It is recommended that the system be flushed before putting heater into operation . This can be done by opening the drain valve located under the stainless steel tank.
SECTION 2. CHECKING CIRCULATOR/PUMP
Before lighting the heater, make sure the circulator is operating properly. With the gas valve in the off position, activate the power switch. The circulator should start immediately. Allow the circulator to pump the water through the system.
NOTE: The circulator motor does not require lubrica- tion.
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