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20308011
27
VFC Vent Free Fireplace System
FLAME APPEARANCE
PILOT AND BURNER FLAME APPEARANCE
Flames from the pilot, front and rear burner should be
visually checked as soon as the heater is installed.
In addition, periodically check the fl ames visually during
operation.
Figure 31 -
Millivolt Control Pilot Flame Appearance
MILLIVOLT CONTROL
Thermocouple
for Natural Gas
Thermocouple
for LP
Thermocouple
for Natural Gas
Thermocouple
for LP
Correct Pilot Flame Appearance Incorrect Pilot Flame Appearance
CHECKING THE PILOT FLAME
The pilot fl ame must always be present when the
heater is in operation. It should just touch the top of the
thermocouple tip for natural. Refer to Figures 31 & 32 for
correct pilot fl ame.
If the pilot fl ame does not touch the thermocouple, then
the main burner cannot function reliably. Refer to Figures
31 & 32 for incorrect shape of pilot fl ame.
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