Heat & Glo • RED40, RED40ST Installation Manual • 2155-980 Rev. C • 11/13
44
Figure 10.1 Finishing Details
Note:
It is acceptable to use a high temperature silicone
sealant to adhere drywall to lower cover panel.
33-1/2 IN. HEIGHT
FACTORY INSTALLED
NON-COMBUSTIBLE BOARD
= NO SCREWS IN THIS AREA
= 2 IN. MAX. SCREW LENGTH
SIDE FINISH NON-COMBUSTIBLE
BOARD (2)
47 IN. WIDTH
FACTORY INSTALLED NON-COMBUSTIBLE BOARD
Finish and Sealing Joints
All joints between the
fi
nished wall sheathing and the ap-
pliance must be sealed with non-combustible materials.
Sealants, such as caulk or mastic used to seal the gap
between the wall and the
fi
replace, should be rated at a
minimum continuous exposure to 300ºF.
Finishing Around Opening with Gypsum Wallboard
Gypsum wallboard (drywall) joints adjacent to the
fi
re-
place opening, including the non-combustible board on
the appliance, require special attention to minimize crack-
ing. When installing gypsum wallboard around the
fi
re-
place, install the hole for the
fi
replace opening in a single
wallboard sheet, if possible. This will minimize the joints
adjacent to the
fi
replace opening.
Tape wall board joints around the
fi
replace opening with
fi
berglass-mesh tape. It will provide a more crack-resis-
tant joint than paper tape. Fill, smooth and
fi
nish wall
joints with chemically setting-type joint compound. It will
provide a more crack-resistant joint than air-drying light-
weight compound.
Painting
If desired
fi
nishing includes a painted wall, 100% acrylic
latex with compatible primer is recommended around this
appliance. Oil-based or standard acrylic paints may dis-
color due to heat exposure.
Facing Material
• Facing and/or
fi
nishing materials must not interfere with
air
fl
ow through louvers, operation of louvers or doors,
or access for service.
• Facing and/or
fi
nishing materials must never overhang
into the glass opening.
• Observe all clearances when applying combustible
materials.
= AIR SPACE
NON-COMBUSTIBLE BOARD
ON FRONT FACE (SIDE VIEW)
COMBUSTIBLE
FRAMING
1/2 IN.
1 IN.
20-3/4 IN.
FACTORY-SUPPLIED
NON-COMBUSTIBLE
BOARD (2)
1/2
IN. THICK
WALL SHEATHING
3-1/2 IN.
11-1/4 IN.
7-1/4 IN.
3-1/2 IN.
Figure 10.2 Framing and Framing Materials-RED40