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117001-01E
14
INSPECTING HEATER
Note: The pilot flame on natural gas units will
have a slight curve, but flame should be blue
and have no yellow or orange color.
BURNER FLAME PATTERN
Figure 22, page 15, shows a correct burner
flame pattern. Figure 23, page 15, shows an
incorrect burner flame pattern. The incorrect
burner flame pattern shows yellow tipping of
the flame. It also shows the flame higher than
1/2 the glass panel height.
WARNING: If yellow tipping
occurs, your heater could pro
-
duce increased levels of car-
bon monoxide. If burner flame
pattern shows yellow tipping,
proceed with the following in
-
structions.
NOTICE: Do not mistake orange
flames with yellow tipping. Dust
or other fine particles enter the
heater and burn causing brief
patches of orange flame.
If burner flame pattern is incorrect, as shown
in Figure 23, page 15,
• turn heater off (see
To Turn Off Gas to Ap-
pliance,
page 13)
• see
Troubleshooting
, page 16
Thermocouple
Pilot Burner
Pilot Burner
Thermocouple
Blue Flame
Yellow Flame
Figure 20 - Correct Pilot Flame Pattern
Figure 21 - Incorrect Pilot Flame Pattern
THERMOSTAT CONTROL
OPERATION
The thermostatic control used on these
models differs from standard thermostats.
Standard thermostats simply 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 control knob
can be set to any heat level between 1 and
5. This adjusts the amount of gas flow to the
burner that increases or decreases the burner
flame height.
Note: The thermostat sensing bulb mea-
sures the temperature of air near the heater
cabinet. This may not always agree with
room temperature (depending on housing
OPERATION
Continued
construction, installation location, room size,
open air temperatures, etc.) Frequent use of
your heater will let you determine your own
comfort levels.
MANUAL LIGHTING
PROCEDURE
1. Remove front panel (see Figure 10,
page 9).
2. Follow steps 1 through 7 under
Lighting
Instructions
, page 13.
3. With control knob pressed in, strike match.
Hold match to pilot until pilot lights.
4. Keep control knob pressed in for 30 sec
-
onds after lighting pilot. After 30 seconds,
release control knob. Now follow step 9,
under
Lighting Instructions
, page 13.
5. Replace front panel.
Check pilot flame pattern and burner flame
pattern often.
PILOT FLAME PATTERN
Figure 20 shows a correct pilot flame pattern.
Figure 21 shows an incorrect pilot flame pat
-
tern. The incorrect pilot flame is not touching
the thermocouple. This will cause the thermo
-
couple to cool. When the thermocouple cools,
the heater will shut down.
If pilot flame pattern is incorrect, as shown
in Figure 21
• turn heater off (see
To Turn Off Gas to Ap-
pliance,
page 13)
• see
Troubleshooting
, page 16
