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Outdoor Lifestyles by Hearth & Home Technologies Inc. • Montana US-CAN • 4039-156 Rev K 7/11
24
B. Finishing Material
• Combustible Material
Material which is made of or surfaced with wood,
compressed paper, plant bers, plastics, or any material
capable of igniting and burning, whether ame proofed or
not, plastered or not plastered.
• Non-Combustible Material
Material which will not ignite and burn. Such materials are
those consisting entirely of steel, iron, brick, tile, concrete,
slate, glass or plasters, or any combination thereof.
• Non-Combustible Sealant Material
Sealants which will not ignite and burn: Rutland, Inc.
Fireplace Mortar #63, Rutland 76R, Nuflex 304, GE
RTV106 or GE RTV116 (or equivalent).
After completing the framing and applying the facing material
(drywall) over the framing, a bead of non-combustible seal-
ant must be used to close off any gaps at the top and sides
between the replace and facing to prevent cold air leaks.
Large gaps can be bridged with berglass rope gasket.
Only non-combustible materials may be used to cover the
black metal replace front.
14-3/8 in./36.5 cm
12 in.
30.5 cm
39
deg.
4 in./10.2 cm
BRICK
FRONT
FLUSH FRONT
12 in.
30.5 cm
9-3/4 in./24.8 cm
50
deg.
A
B
Cat # A B
MONTANA-36 & 36H 36 in./91.4 cm 42 in./106.7 cm
MONTANA-42 & 42H 42 in./106.7 cm 48 in./121.9 cm
Figure 8.5 Sidewalls/Surrounds
Fire Risk
Do NOT obstruct air inlet or outlet grilles.
Do NOT modify grilles.
• Modifying or covering grilles could cause
temperature rise and re hazard.
Finishing materials must not interfere with:
• Air ow through grilles or louvers
• Operation of louvers or doors
• Access for service
WARNING
Fire Risk
Finish all edges and fronts to clearances and
specications.
• Metal replace front may be covered with
non-combustible material only.
• Do NOT overlap combustible materials onto
replace front.
• Install combustible materials up to specied
clearances on top front and side edges.
• Seal joints between the nished wall and
replace top and sides using only a 300° F
minimum sealant.
WARNING
C. Mantel
A combustible mantel may be positioned no lower than
12 in. (305 mm) above the top of the replace opening. The
combustible mantel may have a maximum depth of 12 in.
(305 mm), Combustible trim pieces that project no more
than 1-1/2 in. (38 mm) from the face of the replace can
be placed no closer than 6 in. (152 mm) from the top of the
replace opening. See Figure 8.4. Combustible trim must
not cover the metal surfaces of the replace. This mantel
clearance is in accordance with Section 7-3.3.3 of ANSI/
NFPA211.
D. Sidewalls/Surrounds
Adjacent combustible side walls must be located a minimum
of 12 in. (305 mm) from the replace opening. If you are us-
ing a decorative surround constructed of combustible ma-
terial, it must be located within the shaded area dened in
Figure 8.5. Short stub walls are also acceptable if they are
contained within the shaded area.
E. Glass Doors
This replace has been tested and listed for use with doors
as specied in Section 12.B. Fireplace Components. Please
refer to the manual packed with each set of doors for instal-
lation instructions.
12 in. (305 mm)
min.
12 in. (305 mm)
max.
Top of
Fireplace
Opening
Mantel
1-1/2 in. (38 mm) max.
6 in. (152 mm) min.
Header
Standoff
Figure 8.4 Mantel Specications
Fire Risk
• Maintain clearances.
• Use only non-combustible material below
standoffs, material such as cement board is
acceptable.
WARNING
• Framing or nishing material used on the front of, or
in front of, the appliance closer than the minimums
listed, must be constructed entirely of noncombustible
materials (i.e., steel studs, concrete board, etc.).