Cleaning And Maintenance - Desa LSF20NT Safety Information And Installation Manual

INSPECTING HEATER
Continued
Figure 20 - Correct Burner Flame Pattern
Figure 21 - Incorrect Burner Flame Pattern
CLEANING AND
MAINTENANCE
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: You must keep
control areas, burner and circu-
lating air passageways of heater
clean. Inspect these areas of
heater before each use. Have
heater inspected yearly by a
qualified service person. Heater
may need more frequent clean-
ing due to excessive lint from
carpeting, bedding material, pet
hair, etc.
WARNING: Failure to keep
the primary air opening(s) of
the burner(s) clean may result in
sooting and property damage.
116307-01B
ODS/PILOT AND BURNER
Use a vacuum cleaner, pressurized air or small,
soft bristled brush to clean.
BURNER PILOT AIR INLET
The primary air inlet holes allow the proper
amount of air to mix with the gas. This provides a
clean burning flame. Keep these holes clear of dust,
dirt and lint. Clean these air inlet holes prior to each
heating season. Blocked air holes will create soot.
We recommend that you clean the unit every three
months during operation and have heater inspected
yearly by a qualified service person.
Blue
We also recommend that you keep the burner
Flame
tube and pilot assembly clean and free of dust and
dirt. To clean these parts we recommend using
compressed air no greater than 30 PSI. Your local
computer store, hardware store or home center
may carry compressed air in a can. You can use a
Yellow
vacuum cleaner in the blow position. If using com-
Tipping
pressed air in a can, please follow the directions on
the can. If you donʼt follow directions on the can,
you could damage the pilot assembly.
1. Shut off the unit, including the pilot. Allow
the unit to cool for at least thirty minutes.
2. Inspect burner, pilot for dust and dirt.
3. Blow air across the ports/slots and holes in the
burner.
4. Never insert objects into the pilot tube.
Clean the pilot assembly also. A yellow tip on the
pilot flame indicates dust and dirt in the pilot as-
sembly. There is a small pilot air inlet about two
inches from where the pilot flame comes out of
the pilot assembly (see Figure 22). With the heater
off, lightly blow air through the air inlet. You may
blow through a drinking straw if compressed air
is not available.
Pilot Air Inlet
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 the cabinet to remove dust.
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Pilot Assembly
Figure 22 - Pilot Air Inlet
15