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Check burner operation. Adjust if necessary.
To insure smooth ignition, pilot light and burners are observed for proper burning characteristics.
Check manifold gas pressure. Adjust if necessary.
Proper pressure is required to convert fuel input to the furnace burners.
Check heat exchanger.
To assure proper fuel combustion, and to avoid creating carbon monoxide in the system.
Check high limit control.
The principal control in the furnace to prevent overheating and possible damage to the unit and to the structure it's located in.
Check fan control.
To assure fan comes on and goes off at predetermined temperatures, thereby delivering the proper temperature of air into the occupied space.
Check for flue obstructions.
To assure proper fuel combustion and the removal of combustion products.
Check thermostat calibration.
An improperly calibrated thermostat will call for more or less heating than desired. The former will cost you money; the latter will cost you comfort.
Check heat anticipator setting. Adjust if necessary.
To control proper furnace on/off operation, ensuring a more even, comfortable, controlled temperature.
Check and adjust airflow for proper temperature rise.
One way to assure maximum efficiency for your system.
Check and adjust blower components.
Proper adjustment and cleanliness of blower and components are necessary for adequate airflow. This assures proper capacity and equipment reliability.
Lubricate all moving parts where necessary.
Poor lubrication causes drag on the motor and drive shaft, thereby requiring more electricity to overcome resistance. Lack of lubrication can ruin the bearings and burn out a motor.
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