8
COMBUSTION AREA AND VENT SYSTEM
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury
or death.
For proper and safe operation the furnace needs air for
combustion and ventilation. Do not block or obstruct air
openings on the furnace, air opening to the area in which the
furnace is installed, and the space around the furnace.
!
WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury
or death.
If holes are found or if the vent pipe is obstructed or is not
connected, toxic fumes can escape into your home. DO NOT
OPERATE YOUR FURNACE. Call your dealer for service.
!
WARNING
Inspect the combustion area and vent system before each heating
season. An accumulation of dirt, soot, or rust can mean a loss of
efficiency and improper performance. Buildups on the main
burners can cause faulty firing. This “delayed ignition” is
characterized by an alarmingly loud sound.
NOTE
: If your furnace makes a loud noise when the main burners
are ignited, shut down the furnace and call your servicing dealer.
Use your flashlight and follow these steps for inspecting the
combustion area and vent system of your furnace:
1. Turn off electrical supply to the furnace and remove the
access door. (See Fig. 6 and 7.)
2. Carefully inspect the gas burner for dirt, rust, or scale.
Inspect the elbow, flue connection area, and the vent pipe
for rust.
A92330
Fig. 20 -- Burner Flame
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal
injury or death.
If dirt, rust, soot, or scale accumulations are found, call
your dealer. Do not operate your furnace.
!
WARNING
3. Inspect the vent pipe for a sag, holes, or a disconnection. A
horizontal vent pipe must slope upward away from furnace.
If rusty joints or seams, or signs of water leakages are
found, call your dealer for service.
4. Restore electrical power to the furnace. (See Fig. 11.)
5. Start the furnace and observe its operation. If possible,
watch the burner flames. Are they burning bright blue? If
not or if you suspect some other malfunction, call your
servicing dealer.
6. Replace the access door. (See Fig. 10.)
