Installation manual

www.fmiproducts.com
125685-01B24
Figure 37 - Correct Pilot Flame Pattern
(Your pilot may vary from pilots shown)
Pilot Burner
Thermocouple
Figure 38 - Incorrect Pilot Flame Pattern
(Your pilot may vary from pilots shown)
Thermocouple
Pilot Burner
INSPECTING BURNERS
Check pilot ame pattern and burner ame
patterns often.
PILOT FLAME PATTERN
Figure 37 shows a correct pilot ame pattern.
Figure 38 shows an incorrect pilot ame pat-
tern. The incorrect pilot ame is not touching
the thermocouple. This will cause the thermo-
couple to cool. When the thermocouple cools,
the heater will shut down.
If pilot ame pattern is incorrect, as shown
in Figure 38
• turn heater off (see To Turn Off Gas to Ap-
pliance, page 20.
• see Troubleshooting, page 26
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 39 - Correct Front Burner Flame
Pattern
Figure 40 - Incorrect Front Burner Flame
Pattern
Yellow Tipping
At Top of Blue
Flame
FRONT BURNER FLAME PATTERN
Figure 39 shows correct front burner ame
pattern. Figure 40 shows incorrect front
burner ame pattern. The incorrect burner
ame pattern shows yellow tipping at top of
blue ame.
WARNING: If yellow tipping
occurs, your heater could pro-
duce increased levels of carbon
monoxide. If front burner ame
pattern shows yellow tipping,
follow instructions at bottom of
this page. Yellow ame on rear
burner is normal.
NOTICE: Do not mistake orange
ames with yellow tipping. Dirt
or other ne particles are burned
by heater, causing brief patches
of orange ame.
If front burner ame pattern is incorrect, as
shown in Figure 40
• turn heater off (see To Turn Off Gas to Ap-
pliance, page 20.
• see Troubleshooting, page 26.