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Heatilator • FL92 Installation Manual • 4012-081 • Rev C • 10/03/13
D. Frame the Fireplace
NOTICE:
Hearth extension design must be determined
before installation of fireplace.
If the fireplace is placed on the floor the maximum height
of a finished raised hearth is 5-3/4 in. If you want a higher
raised hearth the fireplace must be placed on a platform.
WARNING! Risk of Fire!
You must comply with all
minimum air space clearances to combustibles.
DO NOT
pack required air spaces with insulation or other materi
-
als.
WARNING! Risk of Fire!
Comply with all minimum clear-
ances specified.
• A minimum 1/2 in. (13 mm) air clearance must be
maintained at the back of the fireplace assembly.
• Chimney sections at any level require a 2 in. (51 mm)
minimum air space clearance between the framing and
chimney section.
Figure 3.5 shows a typical framing (using 2 x 4 lumber)
of the fireplace, assuming combustible materials are
used. All required clearances to combustibles around the
fireplace must be adhered to. See Figure 3.2. Any framing
across the top of the fireplace must be above the level of
the top standoffs. (No recess above standoffs.)
CAUTION!
Risk of Cuts/Abrasions. Wear protective gloves
and safety glasses during installation. Sheet metal edges
are sharp.
WARNING! Risk of Fire!
Prevent contact with sagging,
loose insulation.
•
DO NOT
install against vapor barriers or exposed
insulation.
• Secure insulation and vapor barriers.
• Provide minimum air space clearances at the back of
the fireplace assembly.
E. Secure and Level the Fireplace
This fireplace may be placed on either a combustible
or noncombustible continuous flat surface. Follow the
instructions for framing in Section 3. Slide the fireplace
into position. Be sure to provide the minimum 1/2 in. air
clearance at the back of the fireplace.
The fireplace should be positioned so the face of the non-
combustible material on the fireplace will be flush with the
face of the drywall on the walls.
Level the fireplace and shim as necessary.
36 in. min.
(914 mm)
22-1/2 in.
(572 mm)
47-1/8 in. (1197 mm) header height. Use only
non-combustible material below the standoffs.
2 in. (51 mm) Minimum Air Space
Clearance to Enclosure
12 in.
(305 mm)
maximum
42-1/2 in.
(1080 mm)
Mantel
Figure 3.5 Framing the Fireplace