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Heat Releases and Air Intakes
Heat Releases
This fireplace requires one or more heat release outlet(s) located above the fireplace to allow warm air to flow back
into the room and keep the fireplace wall cool .
The total heat release outlet area must be at least 200 square inches (1290 cm²) . A larger heat release outlet area
is recommended where the application permits it, as this will help reduce the temperature of surrounding wall . The
heat release must not be vented outdoors, as this would cause the fireplace to be exposed to outdoor elements .
! NOTE: The recommended minimum dimensions provided for the heat release are measured for open
airspace. When using accessories such as vent grilles, the opening must be made larger to account for the
reduced open airspace.
The outlet for heat release from the wall enclosure MUST remain open . The outlet must be at the top part of
the enclosure but not necessarily at the front, so long as the measurements below are maintained . Heat release
openings can be installed at the front, on the sides (one on each side), on the back, or on top (in case of a drop wall
design, where the top of the wall does not meet the ceiling) of the enclosure .
The top of the heat release outlet(s) must be between 1" - 3" (25 mm - 76 mm) down from the fire stop or ceiling .
For installations where the top of a heat release outlet is less than 3", it is recommended to use fire-rated board on
the ceiling . A non-combustible fire stop must be placed at the top of the inside of the chase and must be framed
in a way that does not allow any pockets of heat to be formed . The heat should be able to rise to the fire stop and
freely flow through the vent to enter the room .
Air Intake
This fireplace requires a cool air intake located below the fireplace .
The total air intake area must be at least 100 square inches (645 cm²) .
! NOTE: The recommended minimum dimensions provided for the air intake are measured for open airspace.
When using accessories such as vent grilles, the opening must be made larger to account for the reduced
open airspace.
The air intake opening can also be used as an access door to the gas valve, if it meets both of the size requirements
for the access door and the air intake opening . The air intake opening can be installed at the sides of the enclosure
(one on each side), or at the front .
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