Maintenance And Cleaning; Flame Appearance; Check The Pilot Flame; Check Burner Flame Appearance - Vermont Castings AVFL42NTSC Installation & Operating Instructions Manual

AVFL Vent Free Fireplace

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.

CHECK 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 gas. Refer to Figure 27 for
correct pilot fl ame.
If the pilot fl ame does not touch the thermocouple, then
the main burner cannot function reliably. Refer to Figure
28 for incorrect shape of pilot fl ame.

CHECK BURNER FLAME APPEARANCE

In normal operation, at full rate after 15 minutes, the fl ames
should appear as shown in Figure 29.
If logs are installed, the fl ames should be yellow and should
not impinge on the logs.
Figure 29 –
Burner Flame Appearance
(Shown with fi reglass only)
28

MAINTENANCE AND CLEANING

Thermocouple
for Natural Gas
Thermocouple
for LP
Figure 27 –
Correct Pilot Flame Appearance
Thermocouple
for Natural Gas
Thermocouple
for LP
Figure 28 –
Incorrect Pilot Flame Appearance
FP2272
FP2273
LG1181
20305467