OPERATING HEATER
Continued
MANUAL LIGHTING
PROCEDURE
1.Remove front panel (see Figure 7, page 9).
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 lighting pilot. After 30 seconds, release control knob. Now follow step 8, under Lighting Instructions, page 14.
5.Replace front panel.
INSPECTING HEATER
Check pilot flame pattern and burner flame pat- tern often.
PILOT FLAME PATTERN
Figure 21 shows a correct pilot flame pattern. Figure 22 shows an incorrect pilot flame pattern. The incor- rect 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 22
•turn heater off (see To Turn Off Gas to Appli- ance, page 15)
•see Troubleshooting, page 19
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 | Blue Flame |
| |
| Pilot Burner |
BURNER FLAME PATTERN
WARNING: If yellow tipping occurs, your heater could pro- duce increased levels of carbon monoxide.
NOTICE: Do not mistake orange flames with yellow tipping. Dirt or other fine particles enter the heater and burn causing brief patches of orange flame.
Figure 23 shows a correct burner flame pattern. Figure 24 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 24
• | turn heater off (see To Turn Off Gas To Appli- |
| ance, page 15) |
• | see Troubleshooting, page 19 |
| Blue |
| Flame |
| 1/2 Glass |
| Height |
Figure 23 - Correct Burner Flame Pattern | |
| Yellow Tipping |
| 1/2 Glass |
| 1/2 GL |
| Height |
| Figure 24 - Incorrect Burner Flame |
| Pattern |
Figure 21 - Correct Pilot Flame Pattern
Thermocouple
Yellow Flame
Pilot Burner
Figure 22 - Incorrect Pilot Flame Pattern
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