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Figure 21 - Incorrect Pilot Flame
Pattern
Figure 23 - Incorrect Burner
Flame Pattern
Figure 22 - Correct Burner Flame
Pattern
BURNER FLAME PATTERN
Figure 22 shows a correct burner
flame pattern. Figure 23 shows an
incorrect burner flame pattern. If
pilot flame pattem is incorrect, as
shown in Figure 23.
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turn heater off (see To Turn Off
Gas to Appliance. page 12 for non-
thermostat models or page
11 for thermostat models)
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see Troubleshooting. pages 14
through 16
CLEANING ODS/PILOT AND
BURNER
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Use a vacuum cleaner,pressur-
ized air or a small, soft bristled
brush to clean.
CLEANING BURNER
PILOT AIR INLET HOLE
We recommend that you clean the
unit every 2,500 hours of operation or
every three months. 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 com-
pressed air no greater than 30 PSl.
Your local computer store, hard-
ware store or home center may carry
compressed air in a can. You can
use a vacuum cleaner in the blow
position. If using compressed air in
a can, please follow the directions
on the can. If you don’t 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 through the ports/slots
and holes in the bumer.
Also clean the pilot assembly. A
yellow tip on the pilot flame indi-
cates dust and dirt in the pilot
assembly. There is a small pilot air
inlet hole about two inches from
where the pilot flame comes out of
the pilot assembly (see Figure 24).
With the unit off lightly blow air through
the air inlet hole. You may blow
through a drinking straw if com-
p r e s s e d a i r i s n o t a v a i l a b l e .
Figure 24 - Pilot Inlet Air Hole
CLEANING HEATER CABINET
Air Passageways
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Use a vacuum cleaner or
pressurized air to clean.
Exterior
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Use a soft cloth dampened with
a mild soap and water mixture.
Wipe the cabinet to remove dust.
PILOT FLAME PATTERN
Figure 20 shows a correct pilot
flame pattern. Figure 21 shows an
incorrect pilot flame pattern. The
incorrect pilot flame is not touching
thermocouple. This will cause the
thermocouple, to cool. When the
thermocouple cools, the heater will
shut down. If pilot flame pattern is
incorrect, as shown in Figure 21.
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turn heater off (see To Turn
Off Gas to Appliance, page 12
for non-thermostat models or
page 11 for thermostat models.)
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see Troubleshooting. pages 14
through 16.
WARNING: Turn off heater
and let cool before servicing.
CAUTION: You must keep con-
trol areas, burner, and circulating
air passageways of heater clean.
Inspect these areas of heater be-
fore each use. Have heater in-
spected yearly by a qualified ser-
vice person. Heater may need more
frequent cleaning due to excessive
l i n t f r o m carpeting, bedding
material, pet hair, etc.
CLEANING AND
MAINTENANCE
WARNING: If yellow tipping
o c c u r s , y o u r h e a t e r c o u l d
produce increased levels of
c a r b o n m o n o x i d e . I f b u r n e r
flame pattern shows yellow
tipping, follow instructions at
bottom of this page.
Notice: Do not mistake orange
flames with yellow tipping. Dirt
or other fine particles enter the
heater and burn causing brief
patches of orange flame.
Check pilot flame pattern and
burner flame pattern often.
INSPECTING BURNER
Figure 20 - Correct Pilot Flame
Pattern
