Cleaning And Maintenance - Desa LMFP33NR(A) Owner's Operation And Installation Manual

INSPECTING BURNERS
Continued
BURNER PRIMARY AIR HOLES
Air is drawn into the burner through the holes in
the fitting at the burner entrance. These holes may
become blocked with dust or lint. Periodically
inspect these holes for any blockage and clean if
needed. Blocked air holes will create soot.
MAIN BURNER
Periodically inspect all burner flame holes with the
fireplace running. All slotted burner flame holes
should be open with yellow flame present. All round
burner flame holes should be open with a small blue
flame present. Some burner flame holes may become
blocked by debris or rust, with no flame present. If
so, turn off fireplace and let cool. Remove blockage.
Blocked burner flame holes will create soot.
BURNER FLAME PATTERN
WARNING: If yellow tipping
occurs, your fireplace could
produce increased levels of
carbon monoxide.
NOTICE: Do not mistake orange
flames with yellow tipping. Dirt
or other fine particles enter the
fireplace and burn causing brief
patches of orange flame.
Figure 41 shows a correct burner flame pattern. Fig-
ure 42 shows an incorrect burner flame pattern. The
incorrect burner flame pattern shows the flame higher
consistently higher than 1 inch above the logs.
If burner flame pattern is incorrect, as shown in
Figure 42
• turn heater off (see To Turn Off Gas To Appli-
ance, page 21)
• see Troubleshooting, page 25
Figure 41 - Correct Burner Flame Pattern
Yellow
Tipping
Figure 42 - Incorrect Burner Flame
111604-01H
Pattern
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CLEANING AND
MAINTENANCE
WARNING: Turn off fireplace
and let cool before cleaning.
CAUTION: You must keep
control areas, burner, and cir-
culating air passageways of
fireplace clean. Inspect these
areas of fireplace before each
use. Have fireplace inspected
yearly by a qualified service
person. Fireplace may need
more frequent cleaning 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.
BURNER INJECTOR HOLDER AND
PILOT AIR INLET HOLE
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,
lint, and pet hair. 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.
We also recommend that you keep the burner
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
vacuum cleaner in the blow position. If using com-
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.
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