FMI VSGF36NRC - Manual (Page 24)

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Figure 41 - Correct
Pilot Flame Pattern
Pilot Burner
Figure 42 - Incorrect
Pilot Flame Pattern
Pilot
Burner Thermocouple
(Pilot May Vary From Ones Shown)
Figure 43 - Correct Burner Flame Pattern
Figure 44 - Incorrect Burner Flame
Pattern
Yellow Tipping
At Top of Blue
Flame
INSPECTING BURNERS
Check pilot flame pattern and burner flame
patterns often.
PILOT FLAME PATTERN
Figure 41 shows a correct pilot flame pattern.
Figure 42 shows an incorrect pilot flame pat-
tern. The incorrect pilot flame is not touching
the thermocouple. This will cause the thermo-
couple to cool. When the thermocouple cools,
the fireplace will shut down.
If pilot flame pattern is incorrect, as shown
in Figure 42
• turn fireplace off (see To Turn Off Gas to
Appliance, page 21)
• see Troubleshooting, page 26
Note: The correct pilot flame on natural gas
units will have a slight curve, but flame should
be blue and have no yellow or orange color.
MAIN BURNER
Periodically inspect all burner flame holes with
the heater running. All slotted burner flame
holes should be open with yellow flame pres-
ent. All round burner flame holes should be
open with a small blue flame present. Some
burner flame holes may become blocked
by debris or rust, with no flame present. If
so, turn off heater and let cool. Remove
blockage. Blocked burner flame holes may
create soot.
FRONT BURNER FLAME PATTERN
Figure 43 shows correct front burner flame
pattern. Figure 44 shows incorrect front
burner flame pattern. The incorrect burner
flame pattern shows yellow tipping at top of
blue flame.
If front burner flame pattern is incorrect, as
shown in Figure 44
• turn fireplace off (see To Turn Off Gas to
Appliance, page 21)
• see Troubleshooting, page 26