8
53D0501
18/24/30VL Unvented Gas Logs
HOW THIS APPLIANCE OPERATES
WARNING
Never use this appliance to dry clothes, cook on
or for any purpose other than providing heat into
the area around the appliance.
This control system is a safety system and
must not be tampered with. Do not attempt to
make any adjustments to the control or pilot
other than those described in the installation
and adjustment or troubleshooting sections of
this manual.
This appliance is equipped with a pilot burner, two main
burners, and an ignition tube, which connects the two
main burners. The flame from the pilot burner ignites the
top main burner. The flame from the top main burner then
ignites the gas in the ignition tube which in turn ignites
the bottom main burner. The pilot burner, top main burner
and bottom main burner then burn in unison.
The control system on this appliance serves several
functions. It regulates the incoming gas to the correct
pressure for the rate required. It will not regulate LP gas
directly from the container. A separate regulator must
be installed on the tank or bottle to reduce the gas pressure supplied to the appliance to between
11 and 13 inches water column. The control system also provides a safety shutoff to allow gas to
flow to the main burners only when the pilot is burning and to shut off gas to the pilot burner and
main burners should the pilot flame not be burning. It provides a manual safety valve to turn gas
on and off to the main burners. There is a safety feature in the control valve which will lock the
control valve in the OFF position for a few minutes until the pilot valve closes should the knob be
turned OFF while the pilot is burning. This prevents escape of unburned gases. The control system
also regulates the pilot gas flow to that required for proper operation and provided for shutoff of
the gas to the pilot burner and main burners should the oxygen in the area of the appliance be
depleted to near dangerous levels.
This control system is a safety system and must not be tampered with. Do not attempt to make
any adjustments to the control or pilot except those listed in the installation and adjustment or
troubleshooting sections.
Air is pulled into the main burners by the gas stream and mixed with the gas inside the main
burners before burning. Additional air enters the appliance through openings in the back, bottom,
front and sides of the appliance to complete the burning of the gas. See the combustion and
ventilation air requirements section of this manual for source of the air. Blocking or altering airflow
into and away from the appliance could cause improper combustion and the production of carbon
monoxide gas that could accumulate to hazardous concentrations. To prevent a disruption of the
airflow through the appliance, keep the appliance clean as described by the maintenance section
of this manual.
This appliance's heat input is best utilized when the appliance is installed in a solid-fuel burning
fireplace with the flue damper closed, or when installed in a listed ventless firebox enclosure. The
amount of heat input utilizable when the appliance is installed in a solid-fuel burning fireplace with
the flue damper open is dependent upon how much of the heat input escapes through the open
flue damper.
