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Air Intake
When installing a fireplace with a double glass heat barrier, it is essential to maintain cool air flow between the double glass panels.
For this purpose, an opening must be provided toward the bottom of the wall to allow the double glass fans to circulate room air
through the glass panels and up into the chase. This opening, called an air intake, needs to be made before closing the wall surface
below the fireplace. Air intake must meet the minimum size requirement.
Fireplace Series
Air Intake
40-130*
(includes 31H)
Minimum 124 sq. in. of free air space
150-200
Minimum 200 sq. in. of free air space
250
Minimum 250 sq. in. of free air space
*Includes Built-In/Custom Curve & Island fireplaces. Curve & Island
fireplaces with standard Ortal-provided base have an air intake already
built into the base.
The air intake can be in the form of a louvered/perforated ventilation grille, gap, or toe-kick (reveal). For louvered ventilation grilles,
the net free air space allowed in the louvered area must be equal or greater than the minimum number of square inches required per
fireplace.
The entire air intake must be located at or below the level of the double glass fans.
The air intake is not required to be on the
front wall of the fireplace. The air intake cannot be on a wall that allows air from outside the house directly into the fireplace chase.
Air must be from a conditioned space.
