Inpecting Heater - Desa GN30T Safety Information And Installation Manual

INPECTING HEATER

Check pilot flame pattern and burner flame pat-
tern often.
PILOT FLAME PATTERN
Figure 23 shows a correct pilot flame pattern. Fig-
ure 24 shows an incorrect pilot flame pattern. The
incorrect pilot flame is not touching the thermo-
couple. 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 Fig-
ure 24
• turn heater off (see To Turn Off Gas to Appli-
ance, page 16 or 17)
• see Troubleshooting, pages 20 through 24
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
Figure 23 - Correct Pilot Flame Pattern
Thermocouple
Figure 24 - Incorrect Pilot Flame Pattern
18
Blue Flame
Pilot Burner
Yellow Flame
Pilot
Burner
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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 25 shows a correct burner flame pattern.
Figure 26 shows an incorrect burner flame pat-
tern. 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 26
• turn heater off (see To Turn Off Gas To Appli-
ance, page 16 or 17)
• see Troubleshooting, pages 20 through 43
Figure 25 - Correct Burner Flame Pattern
Figure 26 - Incorrect Burner Flame
Blue
Flame
1 /
2
1/2 G
Height
Yellow
Tipping
1 /
2
1/2 G
Height
Pattern
107884-01H
Glass
Glass