3.Reviewing that the return air duct connection(s) is physically sound, is sealed to the furnace casing.
4.The physical support of the furnace is sound without sagging, cracks, gaps, etc. around the unit so as to provide a seal between the unit and the structure.
5.Inspect for any obvious signs of deterioration of the furnace.
6.Periodic examinations of the vent terminal should also be conducted by the owner on a regular basis, preferably every monthly but at least every two months during the heating season.
7.Check the entire vent terminal for any blockage. If any debris is present remove it.
6.G THE FOLLOWING PROCEDURE SHOULD
BE FOLLOWED FOR THE PERIODIC INSPECTION AS CONDUCTED BY THE OWNER/OCCUPANT.
1.Set the wall thermostat to the OFF position or lower the set point lever to a temperature will below the existing room temperature. Shut off electric power to the furnace. A switch should be mounted either on the outside of the furnace or adjacent to the furnace for this purpose.
2.Remove the burner access door. See Figure 4.
3.Use flashlight or trouble light to observe the burner compartment and burners. There should be very minimal scaling or sooting in this area. Some loose debris may have fallen down on to the floor of the heat exchanger form the tube passageways, and this may be vacuumed out. Also observe the sides of the heat exchanger tubes for “hot spots” due to improper burner alignment or overfiring and give particular attention to any area where it looks like there may be any deterioration from corrosion or rusting. Observe for any corrosion on the burners themselves. Should anything appear questionable, contact your service agency.
4.Inspect the vent terminal, observing for any debris from weather, birds, and the like. Clean if necessary. Also check the small cover assembly on Induced Draft Blower Door to make sure it is clear. See Figure 4.
WARNING
Leakage of products of combustion into the living area may result in asphyxiation resulting in injury or death
5.Restore the electrical power to the furnace by turning the switch back on. Adjust the thermostat to call for heating operation.
6.Observe both the pilot flame and main burners flames, and compare to Figures 5 and 6 respectively. The main burners should be mostly “blue” with possibly a little orange (not yellow) at the tips of the flames. The flames should be in the center of the heat exchanger compartments and impinging on the heat exchanger surfaces.
7.Observe the flames until the blower starts (there is a normal delay 60 second period until the heat exchanger warms up). There should be no change in the size or shape of the flame. If there is any wavering or blowing of the flame on the blower
8.Replace the burner access door.
Manual
