White Mountain Hearth 1 Installation Instructions And Owner's Manual page 14

Flush Mount Mantel Installation (Figure 11)
The fireplace must extend 3/4" beyond finished wall surface when
using a flush mount mantel. Refer to Figure 11 to locate nailing
flanges on fireplace sides. Mark and drill two (2) 1/8" holes into
fireplace side to mount each nailing flange. Use eight (8) 1/2"
hex-head screws supplied in hardware package to attach nailing
flanges to fireplace sides.
NAIL OR OTHER SUITABLE FASTENER
Attention: When fireplace is installed in optional full cabinet mantel
or corner mantel the (4) four nailing flanges shown in Figure 11 will
not be installed on the side of outer casing. The fireplace will be
attached to the full cabinet mantel or corner mantel with the (2) two
nailing flanges located on the top of the outer casing assembly.
Framing (Figure 12)
Fireplace framing can be built before or after the fireplace is set in
place. Framing should be positioned to accommodate wall covering
and fireplace facing material. The fireplace framing should be
constructed of 2 x 4 lumber or heavier. The framing headers may
rest on the fireplace standoffs. Refer to Figure 12 for minimum
framing dimensions.
CAUTION: MEASURE FIREPLACE DIMENSIONS AND
VERIFY FRAMING METHODS, AND WALL COVERING
DETAILS BEFORE FRAMING CONSTRUCTION
BEGINS.
Framing dimension "A" includes a three inch clearance for
standoffs on firebox. After installing firebox into framing,
the finished wall surface must cover the three inch opening
above the firebox.
Page 14
INSTALLATION (continued)
Figure 11
Note: For finishing to top of fireplace, refer to Figure 13.
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"A" 35 3/4" 35 3/4"
(908 mm) (908 mm)
"B" 34 3/8" 37 3/8"
(873 mm) (949 mm)
"C" 16 3/8" 16 3/8"
(416 mm) (416 mm)
Attention: Add 3-3/4" to "A" dimensions when using a flush
mantel base.
Attention: If a base or mantel is not used and the appliance is
installed directly on carpeting, tile or other combustible material
other than wood flooring, it shall be installed on a metal or wood
panel extending the full width and depth of the appliance. The
vertical dimension in Figure 12 must be adjusted when a metal or
wood panel is placed beneath the appliance.
Finishing (Figures 13 and 14)
Finish the walls with the material of your choice. Figure 3 on
page 9 shows the minimum vertical and corresponding maximum
horizontal dimensions of mantels or other combustible projections
above the top front edge of the fireplace.
Only non-combustible materials may be used to cover the black
fireplace front.
Warning: When finishing the fireplace never obstruct
or modify the air inlet/outlet louvers in any manner.
Provide adequate clearances around air openings into the
combustion chamber.
Caution: If the joints between the finished wall and the fireplace
surround (top and sides) are sealed, a 300°F minimum sealant
material must be used. These joints are not required to be sealed.
Only non-combustible material (using 300°F minimum adhesive if
needed), can be applied as facing to the fireplace surround.
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37 3/4" 37 3/4"
(959 mm) (959 mm)
43 3/8" 49 3/8"
(1102 mm) (1254 mm)
16 3/8" 16 3/8"
(416 mm) (416 mm)
Figure 12
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