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Figure 21 - Correct Pilot Flame
Pattern
Figure 22 - Incorrect Pilot Flame
Pattern
BURNER FLAME PATTERN
Figure 23 shows a correct burner
flame pattern. Figure 24 shows an
incorrect burner flame pattern. If
pilot flame pattern is incorrect, as
shown in Figure 24.
turn heater off (see To Turn Off
Gas To Appliance. page 12 for non-
thermostat models or page
11 for thermostat models)
see Troubleshooting. (pages 14
through 16)
CLEANING ODS/PILOT AND
BURNER
Use a vacuum cleaner,
pressurized 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 direc-
tions 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 burner.
Also, clean the pilot assembly. A yel-
low tip on the pilot flame indicates
dust and dirt in the pilot assembly.
There is a small pilot air inlet hole
about two inches from where the pi-
lot flame comes out of the pilot as-
sembly (see Figure 25). With the unit
off, lightly blow air through the air inlet
hole. You may blow through a drinking
straw if compressed air is not available.
Figure 25 - Pilot Inlet Air Hole
CLEANING HEATER 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.
Check pilot flame pattern and
burner flame pattern often.
PILOT FLAME PATTERN
Figure 21 shows a correct pilot
flame pattern. Figure 22 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 22.
turn heater off (see To Turn
Off Gas To Appliance. page 12
for non-thermostat models or
page 11 for thermostat models.)
see Troubleshooting. pages 14
through 16.
WARNING: Turn off heater
and let cool before servicing.
CAUTION: You must keep control
areas, burner, and circulating air
passageways of heater clean. In-
spect 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.
CLEANING AND
MAINTENANCE
WARNING: If yellow tipping
occurs, your heater could
produce increased levels of
carbon monoxide. If burner
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.
Figure 24 - Incorrect Burner
Flame Pattern
Figure 23 - Correct Burner Flame
Pattern
INSPECTING BURNER