INFRARED NATURAL GAS HEATER
OPERATING
HEATER
Continued
TO TURN OFF GAS TO
APPLIANCE
Shutting Off Heater
1.Turn control knob clockwise 
to the OFF position.
2.Turn off all electric power to the ap- pliance if service is to be performed.
Shutting Off Burner Only (pilot stays lit)
Turn control knob clockwise 
to the PILOT position.
THERMOSTAT
CONTROL
OPERATION
The thermostatic control used on these models differs from standard thermo- stats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room tem- perature. 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 set- ting knob can be set to any comfort level between 1 and 7.
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 construction, installation loca- tion, room size, open air temperatures, etc.) Frequent use of your heater will let you determine your own comfort levels.
MANUAL LIGHTING
PROCEDURE
1.Follow steps 1 through 5 under Light- ing Instructions, page 13.
2.With control knob pressed in, strike match. Hold match to pilot until pi- lot lights.
3.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob.
INSPECTING
BURNER
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 22 shows a correct pilot flame pattern. Figure 23 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touch- ing the thermocouple. This will cause the thermocouple to cool. When the thermo- couple cools, the heater will shut down.
If pilot flame pattern is incorrect, as shown in Figure 23
•turn heater off (see To Turn Off Gas to Appliance)
•seeTroubleshooting, pages 15 through 17
Pilot Burner
Thermocouple 
Figure 22 - Correct Pilot Flame Pattern
Pilot Burner
Thermocouple
Figure 23 - Incorrect Pilot Flame Pattern
BURNER FLAME PATTERN
Figure 24 shows a correct burner flame pattern. Figure 25 shows an incorrect burner flame pattern.
If pilot flame pattern is incorrect, as shown in Figure 25
•turn heater off (see To Turn Off Gas to Appliance)
•seeTroubleshooting, pages 15 through 17
Figure 24 - Correct Burner Flame Pattern
Bad Burner
Figure 25 - Incorrect Burner Flame Pattern
CLEANING AND MAINTENANCE
WARNING: Turn off heater and let cool before servicing.
CAUTION: You must keep control areas, burner, and circu- lating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a quali- fied service person. Heater may need more frequent cleaning due to excessive lint from carpeting, pet hair, etc.
ODS/PILOT AND BURNER ORIFICE
•Use a vacuum cleaner, pressurized air, or small, soft bristled brush to clean.
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 cabi- net to remove dust.
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