Manual 2100-279
Page 8
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 start-up, it is an indication of a possible
leak in the heat exchanger. Turn off the gas
valve in the gas line leading to the furnace, and
then the main electrical switch to the furnace
and call your service agency.
8. Replace the burner access door.
WARNING
Leakage of products of combustion into the
living area may result in asphyxiation resulting in
injury or death
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.
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.
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.
