Goodman Gas Furnace AMSS921004CNAA

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 number of cubic feet of gas consumed per hour from the gas rate chart

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

Calculate and enter the BTU input to the furnace (cubic feet per hour x calorific value)

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 and electronic cells for cleanliness.

Inspect the accessibility of the media air cleaner for periodic inspection and replacement of the filter cartridge.

Verify the availability of the following filter cartridges for replacement

Disconnect all power sources before servicing

Verify all power sources are disconnected

Clean the permanent filter if applicable

Replace the disposable filter if applicable

Was the filter replaced with the same type and size?

Turn on the furnace at the thermostat

Wait a few minutes for dislodged 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.

Record the initial manifold pressure in inches of water column.

Is the manifold pressure within the acceptable range for natural gas (3.5 inches water column) or propane gas (10 inches water column)?

Adjust the pressure regulator on the gas valve.

Record the final manifold pressure in inches of water column after adjustment.

Propane Gas Specific Instructions

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