Advanced Distributor Products Unit Heater SEP−115-S

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

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

Enter the gas line pressure with unit firing at maximum rate

Is the gas line pressure above the minimum required level?

Enter the current regulator pressure

Adjust manifold pressure to the value specified on the unit rating plate

Refer to figures 8, 9, and 10 for gas pressure adjustment screw location

Combustion Air Inducer Motor Bearings

Verify that combustion air inducer motor bearings are pre-lubricated and sealed

Check for manufacturer's lubrication instructions on each motor

Re-lubricate fan motor bearings if no manufacturer's instructions are provided

Apply a few drops of SAE No 10 non-detergent oil to motors with oiling ports