Goodman Gas Furnace GMES920804CNAA

Ensure the air cleaner is installed in the correct position (not with the access door facing down).

Verify the air cleaner is located in the return air duct next to the blower compartment.

Electronic Air Cleaner Inspection

Inspect the accessibility of the electronic air cleaner for periodic inspection and cleaning.

Check the pre-filters for cleanliness and clean if necessary.

Inspect the electronic cells for cleanliness and clean if necessary.

Ensure the media air cleaner is accessible for periodic inspection and replacement of the filter cartridge.

Ensure all other gas appliances are turned off

Ensure the heating cycle has been in operation for at least fifteen minutes

Record the time in seconds for one complete revolution of the cubic foot dial on the gas meter

Enter the calorific value of the gas being used (BTU per cubic foot)

Calculate the cubic feet of gas consumed per hour using the gas rate chart

Calculate the BTU input by multiplying the cubic feet of gas consumed per hour by the calorific value of the gas

Turn the furnace on at the thermostat

Wait a few minutes for dust to settle

Check the burner flames for the following characteristics

Are the flames stable, quiet, soft and blue with slightly orange tips?

Are the flames extending directly outward from the burner ports without curling downward, floating or lifting off the ports?

Connect a manometer to the outlet tap at the gas valve before adjusting the pressure regulator.

Measure the current manifold pressure.

Is the manifold pressure within the acceptable range of ±3 inches water column from 3.5 inches for natural gas or 10 inches for propane gas?

Adjust the pressure regulator: Turn clockwise to increase pressure and counterclockwise to decrease pressure.

Propane Gas Specific Instructions

Ensure no unit gas valve regulator is used for propane gas.

Adjust the second stage supply line pressure regulator to 10 inches water column with all other gas consuming appliances running.

Disconnect all power before servicing or installing the unit.

Check the following furnace components for proper working order and function

Is the ignitor being handled by a qualified servicer?

Handle the ignitor with care to avoid early failure.

Have all necessary repairs or services been completed?