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Figure 20 - Correct Pilot Flame
Pattern
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 pattern is incorrect, as
shown in Figure 23.
l turn heater off (see To Turn Off
Gas to Appliance pages10 & 11
for non-thermostat models and
page 12 for thermostat models)
l see Troubleshooting. pages 14
through 16
ODS/PILOT AND BURNER
l Use a vacuum cleaner, pres-
surized air or a small, soft
bristled brush to clean.
CLEANING BURNER
PILOT AIR INLET HOLE
Figure 24 - Pilot Inlet Air Hole
CABINET
Air Passageways
l Use a vacuum cleaner or
pressurized air to clean.
Exterior
l Use a soft cloth dampened with
a mild soap and water mixture.
Wipe the cabinet to remove dust.
WARNING: If yellow tipping
occurs, your heater could produce
increased levels of carbon
monoxide. If burner flame pattern
shows yellow tipping, follow instruc-
tions 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.
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.
l turn heater off (see To Turn Off
Gas to Appliance on page 11
for non-thermostat models or
page 12 for thermostat models.)
l 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
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
nINSPECTING BURNERn
Check pilot flame pattern and
burner flame pattern often.
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 and pilot for dust
and dirt.
3. Blow air through the ports/slots
and holes in the burner.
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 compressed air is
not available.
OPERATING HEATER
Continued
1. Remove lower front panel (see
Figure 7 page 7).
2. Follow steps through 5 under
Lighting Instructions on page12.
3. With control knob pressed in,
strike match. Hold match to pilot
until pilot lights.
4. Keep control knob pressed in for
30 seconds after lighting pilot. After
30 seconds, release control knob.
Follow step 8 under Lighting
Instuctions on page 12.
5. Replace lower front panel.
nMANUAL LIGHTINGn
PROCEDURE