CLEANING
AND
MAINTENANCE
m
AWARNING
Turn off and unplug furnace and let cool before cleaning. Turn
manual shutoff valve to OFF position. Only a qualified service
person should service and repair furnace.
AWARNING
Keep furnace clear and free from combustible materials, gasoline,
and other flammable vapors and liquids.
A CAUTION
You must keep control areas, burner, and circulating air passage-
ways of furnace clean. Inspect these areas of furnace before each
use. Have furnace inspected yearly by a qualified service person.
Furnace may need more frequent cleaning due to excessive lint
from carpeting, bedding material, etc.
CABINET
Air Passageways
• Use a vacuum cleaner or pressurized air to clean.
Exterior
• Use a soft cloth dampened with a mild soap and water mixture. Wipe cabinet
and front cover to remove dust.
• Use a vacuum cleaner to remove dust from front cover louvers.
EXHAUST AND INTAKE VENTS
Make sure the exhaust and intake vents are not blocked. The intake combustion air
and the exhaust gases must be expelled to the outside. Have a qualified service
person clean dirt and loose debris from vents annually.
GASKETS
Inspect all gaskets_ If any gaskets show signs of leakage or damage, replace them.
Safe operation of furnace depends on all gaskets being tight.
FRONT COVER
Remove anything that may be blocking the air to the louvers of the front cover.
COMBUSTION CHAMBER AND MAIN BURNER
Check flame pattern of main burner often (see Inspecting Burner Flame, page 22).
Have combustion chamber and main burner cleaned if you have run the furnace
with a high yellow flame. Incomplete combustion from lack of air causes the
yellow flame. This deposits soot inside the combustion chamber and on the burner.
Contact a qualified service person to clean combustion chamber and main burner.
OUTSIDE VENT CAPS
Inspect outside vent caps for obstructions or soot. If soot is found, do not use
furnace. Contact a qualified service person to clean furnace.
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