Superior Custom WRT40PFWS Installation And Operation Instructions Manual page 6

2. If fireplace is to be installed directly on carpeting, tile (other than
ceramic) or any combustible material other than wood flooring,
fireplace must be installed upon a metal or wood panel extending
full width and depth of fireplace.
3. Set fireplace directly in front of this opening and slide unit back
until nailing flanges touch side framing.
4. Check level of fireplace and shim with sheet metal if necessary.
5. Before securing fireplace to prepared framing, ember protector
(provided) must be placed between hearth extension (not sup-
plied) and under bottom front edge of fireplace to protect against
glowing embers falling through (see Figure 7). If fireplace is to
be installed on a raised platform, a Z-type ember protector (not
supplied) must be fabricated to fit your required platform height
(see Figure 6). The ember protector should extend under fireplace
a minimum of 1 1/2". The ember protector should be made of
galvanized sheet metal (28 gauge minimum) to prevent corrosion.
6. Using screws or nails, secure fireplace to framing through flanges
located on sides of fireplace (see Figure 8).
Platform Must Be Solid,
Flat, and Fully Supported
"Z" Type Metal
Safety Shields
Not Supplied
Figure 6 - Framing Firebox with "Z" Type Ember Protectors
1/2" MIN.
OVERLAP
Figure 7 - Ember Protectors
6
FIREPLACE INSTALLATION Continued
39 /
7
8
22
48 1 / " Min.
2
*
*As Required by Design
As Long as Ceiling
Clearance is Maintaned
1/2" MIN.
www.Superiorfireplaces.US.com
1/2"
Minimum to
Combustibles
Nailing
Flanges
Prepared
Framing
HEARTH EXTENSIONS
A hearth extension projecting a minimum of 20" in front of and a
minimum of 12" beyond each side of fireplace opening is required
to protect combustible floor construction in front of fireplace (see
Figure 9). Fabricate a hearth extension using a material which meets
the following specifications: a layer of noncombustible, inorganic
material having a thermal conductivity of k = .84 BTU IN/FT
"
(or less) at 1" thick. For example, if material selected has a k factor
of 0.25, such as glass fiber, the following formula would apply:
0.25 x 1.0" = 0.30" thickness required
0.84
/ "
5
8
Thermal conductivity "k" of materials can be obtained from manu-
facturer or supplier of noncombustible material.
If hearth extension is to be raised, a "Z" type ember protector must
be used (see Figure 6 and Figure 10, page 7).
WARNING: Hearth extension is to be installed
only as shown in Figure 9.
64" Min.
Nails or
Screws
Figure 8 - Nailing Flanges
16"
20" Min.
Min.
Figure 9 - Hearth Extension
HR °F
2
65" Min.
126616-01A