Goodman Gas Furnace GCSS921005CNAA

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 for natural gas (3.5 inches water column) or propane gas (10 inches water column)?

Adjust the pressure regulator direction

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.

Check that the new or cleaned filter is properly installed

Verify system operation after filter maintenance

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.

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?

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

Enter the number of cubic feet of gas consumed per hour

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

Calculate and enter the BTU input to the furnace