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119162-01A 23
INSPECTING bURNERS
Check pilot ame pattern and burner ame pat-
terns often.
pILOT FLAME pATTERN
Figure 35 shows a correct pilot ame pattern.
Figure 36 shows an incorrect pilot ame 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 ame pattern is incorrect, as shown in
Figure 36
• turn heater off (see To Turn Off Gas to Appli-
ance, page 21
• see Troubleshooting, page 25
Note: The pilot ame on natural gas units will
have a slight curve, but ame should be blue and
have no yellow or orange color.
Figure 35 - Correct Pilot Flame Pattern
Pilot Burner
Thermocouple
Figure 36 - Incorrect Pilot Flame Pattern
Thermocouple
Pilot Burner
Figure 36 shows correct front burner ame pat-
tern. Figure 37 shows incorrect front burner ame
pattern. The incorrect burner ame pattern shows
yellow tipping at top of blue ame.
-
Figure 37 - Correct Front Burner Flame
Pattern
Figure 38 - Incorrect Front Burner Flame
Pattern
If front burner ame pattern is incorrect, as shown
in Figure 37
• turn heater off (see To Turn Off Gas to Appli-
ance, page 21)
• see Troubleshooting, page 25
Yellow Tipping At
Top of Blue Flame
WIRING DIAGRAM
To
Thermopile
To AUTO/OFF/ON
Switch or Remote
Receiver
