Advanced Distributor Products Unit Heater SEP−200-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

Set the thermostat to call for heat

Did the system begin normal sequence of operation?

Wait for approximately 30 seconds (pre purge period)

Is the LED fast flashing indicating the gas valve is powered?

Count the number of times the gas valve closes and reopens

Vent and Vent Connector Inspection

Check all vent and vent connector joints for tightness

Are there any blockages in the vents or connectors?

Dispose of any debris or waste found during inspection

Inspect the combustion air inducer for any visible damage

Clean the inducer wheel with a small brush

Is the combustion air inducer free of debris and damage?

Check gas line pressure with unit firing at maximum rate

Check regulator pressure after line pressure has been checked and adjusted

Adjust manifold pressure to values specified on the unit rating plate

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

Is a natural gas to LP/propane gas changeover kit required for conversion?

Refer to installation instructions provided with changeover kit for conversion procedure