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20308184
VFF Vent Free Fireplace System
Figure 53 - Millivolt Control Pilot Flame Appearance
MILLIVOLT CONTROL
Thermocouple
for Natural Gas
Thermocouple
for LP
Correct Pilot Flame Appearance
Thermocouple
for Natural Gas
Thermocouple
for LP
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 thermo-
couple tip for natural. Refer to Figure 53 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
53 for incorrect shape of pilot fl ame.
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.
CHECKING BURNER FLAME
VFF32L/VFF36L MODELS
In normal operation at full rate after 15 minutes, the
following fl ame appearances should be observed:
Burner will have a random pattern of yellow fl ames.
Figure
54.
There should be glowing embers in front of burner.
NOTE: The front fl ames and embers will be an opaque
orange color during the burn off time.
Figure 54 - VFF Traditional with KW24-R Logs Flame
Appearance
Figure 55 - VFF Contemporary Flame Appearance
VFF32C/VFF36C MODELS
In normal operation at full rate after 15 minutes, the following
fl ame appearances should be observed:
Burner will have a random pattern of yellow fl ames.
Figure 55
OPERATING INSTRUCTIONS
Avoid any drafts that alter burner fl ame patterns.
Do
not allow fans to blow directly into the fi replace. Do not
place a blower inside the burn area of the fi rebox. Ceiling
fans may create drafts that alter fl ame patterns. Sooting
and improper burning will result.
During manufacturing, fabricating and shipping, various
components of this appliance are treated with certain oils,
fi lms or bonding agents. These chemicals are not harmful,
but may produce annoying smoke and smells as they are
burned off during the initial operation of the appliance,
possibly causing headaches or eye or lung irritation.
This
is a normal and temporary occurrence.
The initial break-in operation should last two to three hours
with the burner at the highest setting. Provide maximum
ventilation by opening windows or doors to allow odors to
dissipate. Any odors remaining after this initial break-in will
be slight and will disappear with continued use.
This appliance must not be used with glass doors in the
closed position. This can lead to pilot outages and severe
sooting outside the fi replace.
FLAME APPEARANCE
