Advanced Distributor Products Unit Heater SEP−230-A

Check all wiring for loose connections

Enter the voltage at the unit (unit operating)

Ensure all tools are removed from the inspection area

Is the inspection area clean and free of debris?

Vent and Vent Connector Inspection

Check all vent and vent connector joints for tightness

Ensure there are no blockages in the vent and vent connectors

Dispose of any debris or waste found during inspection

Set the thermostat to call for heat

Did the system begin normal sequence of operation?

Enter the duration of the pre purge period in seconds

Did the LED fast flash indicating the gas valve is powered?

Enter the number of times steps 4 and 5 repeated before lockout

Examine burner flames for proper appearance during the heating season

Examine burners for any deposits or blockage

Turn off both electrical and gas supplies to unit

Disconnect gas supply piping, high tension and sensor leads

Verify thermostat calls for heat

Check if combustion air inducer starts immediately

Combustion Air Pressure Switch Verification

Ensure combustion air pressure switch proves inducer operation

Confirm no adjustment is necessary for the factory-set switch

Ignition and Gas Valve Operation

Record prepurge duration in seconds

Verify spark ignition is energized