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Figure 23 - Correct Pilot Flame
Pattern
Figure 24 - Incorrect Pilot Flame
Pattern
Figure 26 - Incorrect Burner
Flame Pattern
Figure 25 - Correct Burner Flame
Pattern
BURNER FLAME PATTERN
Figure 25 shows a correct burner
flame pattern. Figure 26 shows an
incorrect burner flame pattern. If
burner flame pattem is incorrect, as
shown in Figure 26.
l turn heater off (see To Turn Off
Gas to Appliance. page 11 for
non-thermostat models or page
12 for thermostat models).
l see Troubleshooting. pages 14
through 16.
CLEANING ODS/PILOT AND
BURNER
l 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 com-
pressed air no greater than 30 PSl.
Your local computer store, hardware
store, or home center may carry com-
pressed 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 27).
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 27 - Pilot Inlet Air Hole
CLEANING HEATER 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.
nMANUAL LIGHTINGn
PROCEDURE
1. Remove lower front panel (see
Figure 7 page 7).
2. Follow steps 1 through 5 under
Lighting Instructions on page 12.
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
Instructions on page 12.
5. Replace lower front panel.
PILOT FLAME PATTERN
Figure 23 shows a correct pilot
flame pattern. Figure 24 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 healer will
shut down. If pilot flame pattern is
incorrect, as shown in Figure 24.
l turn heater off (see To Turn
Off Gas to Appliance. 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 be-
fore each use. Have heater In-
spected yearly by a qualified ser-
vice person. Heater may need more
frequent cleaning due to excessive
lint from carpeting, bedding
material, pet hair, etc.
nTHERMOSTAT n
CONTROL OPERATION
The thermostatic control used on
these Models differs from standard
thermostats.Standard thermostats sim-
ply turn on and off the burner. The
thermostat used on this heater
senses the room temperature. At
times the room may exceed the set
temperature.If so, the burner will
shut off.The burner will cycle back
on when room temperature drops
below the set temperature. The
temperature setting knob can be set
to any comfort level between HI
and LO.
Note: The thermostat sensing bulb
measures the temperature of air near
the heater cabinet. This may not al-
ways agree with room temperature
(depending on housing construction,
installation location, room size, open
air temperatures, etc.)Frequent use of
your heater will let you determine
your own comfort levels.
OPERATING HEATER
Continued
nINSPECTING BURNERn
Check pilot flame pattern and
burner flame pattern often.
n CLEANING AND n
MAIN TENANCE