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Figure 21 - Correct Pilot Flame
Pattern
Figure 22 - Incorrect Pilot Flame
Pattern
Figure 24 - Incorrect Burner Flame
Pattern
Figure 23 - Correct Burner 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 on page 12 for
non-thermostat model or page
11 for thermostat model)
see Troubleshooting on pages 14
through 16
CLEANING ODS/PILOT AND
BURNER
Use a vacuum cleaner,
pressurized air or 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
compressed air no greater than
30 PSl.
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 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 burner.
Clean the pilot assembly also. A
yellow 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 pilot flame comes out of
the pilot assembly (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.
INSPECTING BURNER
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 on page
12 for non-thermostat model or
page 11 for thermostat model)
see Troubleshooting on 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. Inspect
these areas of heater before each
use. Have heater Inspected yearly by
a qualified service person. Heater may
need more frequent cleaning 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.