OPERATING HEATER
To Turn Off Gas To Appliance
Thermostat Control Operation (Thermostat Models Only)
Manual Lighting Procedure
INSPECTING BURNER
Pilot Flame Pattern
Burner Flame Pattern
15
OPERATING HEATER
Continued
TO TURN OFF GAS
TO APPLIANCE
Shutting Off Heater
1. Press in and turn control knob clockwise | 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 Clockwise
to the PILOT position.
THERMOSTAT CONTROL
OPERATION (THERMOSTAT
MODELS ONLY)
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. 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 1 and 5.
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, 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 [for 6,000 (1.8 kW) and 10,000 (2.9 kW) Btu/Hr heater see Figure 11, page 9, for 20,000 Btu/Hr (5.9 kW) heater, see Figure 14 page 10].
2.Follow steps 1 through 5 under Lighting Instructions, page 14.
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 pilot is lit. After 30 seconds, release control knob. Follow step 8 under Lighting Instructions, page 14.
5.Replace front panel.
INSPECTING BURNER
Check pilot flame pattern and burner flame pattern often.
PILOT FLAME PATTERN
Figure 29 shows a correct pilot flame pattern. Figure 30 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the 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 30
•turn heater off (see To Turn Off Gas to Appliance, column 1)
•see Troubleshooting, pages 18 through 20
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.
Thermocouple | Thermocouple | Yellow Flame |
| Blue Flame |
|
| Pilot Burner | Pilot |
| Burner | |
|
|
Figure 29 - Correct Pilot | Figure 30 - Incorrect Pilot Flame |
Flame Pattern | Pattern |
BURNER FLAME PATTERN
WARNING: If yellow tipping occurs, your heater could produce increased levels of carbon monoxide.
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.
Figure 31 shows a correct burner flame pattern. Figure 32 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.
If burner flame pattern is incorrect, as shown in Figure 32
•turn heater off (see To Turn Off Gas to Appliance, column 1)
•see Troubleshooting, pages 18 through 20
Yellow
Tipping
1/2 GLASS HEIGHT
(Models GCN6 and GCP6 will be lower due to lower input rating)
Figure 31 - Correct Burner | Figure 32 - Incorrect Burner |
Flame Pattern | Flame Pattern |
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