Allied Air Enterprises Warm Air Gas Furnace A95UH1E110C20S

Ensure furnace has operated for a minimum of 15 minutes with correct manifold pressure and gas flow rate.

Take combustion sample beyond the flue outlet.

Is the combustion sample within acceptable range according to Table 17?

Is the installation altitude between 4501 - 10,000 feet (1373 to 3048 m)?

If yes, ensure the following adjustments are made

Ensure furnace has been operating for at least 5 minutes

Shut off all other gas appliances connected to the meter

Record time in seconds for two revolutions of gas through the meter

Divide the recorded time by two to get the average time per revolution

Is the average time per revolution matching the time in Table 16?

Does the manifold pressure match Table 18?

Turn off electrical and gas power supplies to furnace

Remove upper and lower furnace access panels

Disconnect the wires from the gas valve

Remove the burner box cover (if equipped)

Disconnect the gas supply line from the gas valve

Remove gas valve/manifold assembly

Mark and disconnect sensor wire from the sensor

Preliminary and Seasonal Checks

Inspect electrical wiring for loose connections and tighten as required.

Check voltage at disconnect switch.

Is the voltage within the range listed on the nameplate?

Inspect condition of condensate traps and drain assembly.

Disassemble and clean condensate traps and drain assembly seasonally.

Check the following for tightness and blockages

Has there been a recent heavy snow, ice, or frozen fog event?

Inspect the vent system for snow or ice obstructions