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Heat & Glo LifeStyle Collection • Twilight-II-B • 2108-900 Rev. G • 8/07 13
APPLIANCE
TL-TRIM KIT
HOOD
TOP HOOD
TOP OF
FIREPLACE
16-5/16 in.
WALL STUD
HOUSEWRAP
INSULATION
HOUSEWRAP
**
(BUILDING
PAPER) OVERLAP
FLASHING 1 in.
SHEATHING,
COMBUSTIBLE
FIREPLACE
HEADER
INSULATED
FRAMING
STANDOFF
NON-COMBUSTIBLE
*
SHEATHING
12 in.
FLASHING
HEADER
Apply housewrap or building paper
For placement of combustible housewrap or building
paper and non-combustible sheathing for the outside
wall see Figures 5.16 and 5.17.
Special care should be taken when choosing building
materials for weather proofi ng (i.e. building wraps, seal-
ant tapes, liquid sealants, rubberized fl ashings, etc.). All
sealant materials or building wraps installed within 6 inch-
es of the top and sides of the fi replace surround must be
approved to a minimum temperature of 225° F continuous
exposure. Consult the material’s manufacturer to ensure
product compliance.
Seal fl ashing to exterior of building using hightemp caulk.
Attach to building using holes provided on the top of the
left and right sides of outdoor fl ashing (see Figure 5.15).
* NOTE: All fi nishing materials on top of exterior sheathing
must be non-combustible for a minimum of 12 inches
above and on both sides of the exterior face of the
appliance. This non-combustible fi nishing material can
be up to a maximum of 6 inches thick (6 inches maximum
horizontal overhang) to allow for brick and stone alcoves
(see Figure 8.5).
** NOTE: Combustible house wrap or building paper
MUST NOT extend over the outside of non-combustible
sheathing, and MAY extend over the fl ashing behind non-
combustible sheathing. Use high temp silicone or sealant
recommended by the manufacturer of the housewrap to
seal between combustible sheathing house wrap and non-
combustible sheathing. The sealant material used within
6 inches of the top and sides of the fi replace surround
must be approved to a minimum temperature of 225° F
continuous exposure.
Figure 5.17
Figure 5.18 Non-combustible Zone (Exterior)
12 in.
12 in.
12 in.
NON-COMBUSTIBLE
ZONE
Risk of Fire
• Non-combustible clearances
must be maintained.
• Sheetrock, wood or other
combustibles must NOT be used as sheathing or
facing in the non-combustible zone.
• See Sections 3 and 8 for proper clearances.
• See Section 1 for combustible /non-combustible
defi nitions.
Once the appliance is in place use enough high tempera-
ture silicone sealant or manufacturer specifi ed sealant
(approved to a minimum of 225° F) to make a water tight
seal between outdoor surround and exterior sheathing.
Face the perimeter of the appliance with non-combustible
sheathing over shroud fl anges and fl ashing. See Figure
5.18 for non-combustible zone.
WARNING
METAL FLASHING
TOP OF SURROUND
EDGE OF SURROUND
6 IN.
6 IN.
Figure 5.16 Outside View without Non-combustible Sheathing Shown
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