10
OPERATING HEATER
Lighting Instructions
To Turn Off Gas To Appliance
Thermostat Control Operation
Manual Lighting Procedure
OPERATING HEATER
Continued
6.With control knob pressed in, push down and release igni- tor button. This will light pilot. The pilot is attached to the front of burner. The pilot can be seen through the glass panel. If needed, keep pressing ignitor button until pilot lights.
Note: If pilot does not stay lit, refer to Troubleshooting, pages 13 through 15. Also contact a qualified service per- son or gas supplier for repairs. Until repairs are made, light pilot with match. To light pilot with match, see Manual Lighting Procedure.
7.Keep control knob pressed in for 30 seconds after lighting pilot. After 30 seconds, release control knob.
•If control knob does not pop up when released, contact a qualified service person or gas supplier for repairs.
Note: If pilot goes out, repeat steps 3 through 7. This heater has a safety interlock system. Wait one (1) minute before lighting pilot again.
8.Turn control knob counterclockwise 
to desired heating level. The main burner should light. Set control knob to any heat level between HI and LO.
CAUTION: Do not try to adjust heating levels by using the equipment shutoff valve.
Ignitor Button | Control Knob | |
| TOILP | LO |
| FFO |
|
| HI |
|
IGNITOR |
|
|
Figure 16 - Control Knob In The OFF Position
Thermocouple
Ignitor Electrode
Pilot Burner
Figure 17 - Pilot
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 appliance 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 stan- dard thermostats. Standard thermostats simply turn on and off the burner. The thermostat used on this heater senses the room temperature. The thermostat adjusts the amount of gas flow to the burner. This increases or decreases the burner flame height. 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 HI and LO. Selecting the HI setting will cause the burner to remain fully on without modulating down in most cases.
Note: The thermostat sensing bulb measures the temperature of air near the heater cabinet. This may not always agree with room temperature (depending on housing construction, instal- lation location, room size, open air temperatures, etc.). Fre- quent use of your heater will let you determine your own comfort levels.
MANUAL LIGHTING
PROCEDURE
1.Remove front panel (see Figure 8, page 5).
2.Follow steps 1 through 5 under Lighting Instructions, page 9.
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.
5.Replace front panel.
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