Daikin Gas Unit DCG048115

Is the weather condition suitable for inspection?

Ensure you have the necessary tools for removing the heat exchanger door.

Remove the heat exchanger door by unscrewing the two screws.

Visually inspect the burner flames.

Reinstall the heat exchanger door by securing the two screws.

Was the inspection completed successfully?

Remove furnace section access panel

Inspect and clean the vent outlet (bird screen) on the access panel

Are the flames stable, soft, and blue?

Do the flames extend directly outward from the burner without curling, floating, or lifting off?

Disconnect the wires from the gas valve

Clean evaporator and condenser coils

Align or replace belts as needed

Ensure the drive on the supply fan is set in the middle of the RPM range

Adjust the drive motor sheave pitch diameter for required airflow

Perform air flow balancing using variable pitched motor sheave

Has the air flow balance been achieved?

Replace variable pitched motor sheave with a properly-sized fixed sheave

Ensure all necessary tools are available

Inspect belt for visible wear or damage

Measure the span length (t) in inches

Measure the center distance (C) in inches

Measure the larger sheave diameter (D) in inches

Measure the smaller sheave diameter (d) in inches

Measure the deflection height (h) in inches