22 | Gi29 Direct Vent Gas Insert
installation
Using Steel Studs and Concrete Board Over Masonry Brick Fireplace
B
A
A
C
D
NONCOMBUSTIBLE FACING OVER
COMBUSTIBLE FRAMING
DIMENSIONS
HORIZONTAL CLEARANCE - A
5"
VERTICAL CLEARANCE - B
23"
OPENING WIDTH - C
30 1/4" MIN
OPENING HEIGHT - D
21 1/2" MIN
NONCOMBUSTIBLE FACING OVER
NONCOMBUSTIBLE FRAMING
DIMENSIONS
A - Horizontal clearance
8" (203 mm)
B - Vertical clearance
23" (584 mm)
C - Opening Width
30-1/4" min. (768 mm)
D - Opening Height
21-1/2" min. (546 mm)
E - Minimum Total Width
46-1/4'' (1175 mm)
F - Minimum Total Height
41-3/4'' (1060 mm)
Combustible Facing Over
Combustible Framing
Non-Combustible Facing Over
Non-Combustible Framing
The masonry front brick facing can be removed and replaced with non-combustible materials such as steel studs and concrete board/dura rock/micor
board as per diagram 1, only if safe to do so. Steel stud may also be placed in front of the masonry brick if left in place. This is the preferred method
depending on the condition of the masonry brick fireplace.
The opening between the front of the masonry firebox and non-combustible materials such as steel studs must be sealed so heat cannot run between the
face of the masonry fireplace and the refacing materials. Only finishing materials such as tile, stone, brick, or similar materials that are non-combustible
may be used. Use materials that are uniform so that when the unit is positioned, there are no visible gaps on the sides or top of the surround.
Diagram 1
Existing Masonry Fireplace
Combustible material permitted
Non-combustible
material only
E
F
Summary of Contents for Gi29LE
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