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900564-00NC
9
INSTALLATION
Continued
Mantel Clearances for Built-In Installation
If placing custom mantel above built-in firebox, you must meet
the minimum allowable clearance between mantel shelf and top of
firebox opening shown in Figure 7. These are the minimum allow-
able mantel clearances for a safe installation. Use larger clearances
wherever possible to minimize the heating of objects and materials
placed on the mantel.
CAUTION: Do not allow the vent-free gas log ap-
pliance to touch or extend beyond the firebox screen.
If your installation does not meet the above minimum clearances in
Figure 7, you must:
• raise the mantel to an acceptable height,
OR
• remove the mantel.
BUILT-IN FIREBOX INSTALLATION
Built-in installation of this firebox involves installing firebox into a
framed-in enclosure. This makes the front of firebox flush with wall.
Follow the instructions below to install the firebox in this manner.
1. Frame in rough opening. The firebox framing should be construct-
ed of 2 x 4 lumber or heavier. Construct framing using dimensions
shown in Figure 8 and 9, page 10. It is recommended that the
framing be constructed first and the unit be placed in position by
removing the nailing flanges from one side. After sliding the unit
into place, the outer most flanges may be replaced and nailed
to the framing on all sides before applying the wallboard to the
exterior framing.
2. If the vent-free firebox is to be installed directly on carpeting, tile
(other than ceramic) or any combustible material other than wood
flooring; the vent-free firebox must be installed upon a metal or
wood panel extending the full width and depth of the vent-free
firebox.
Figure 7 - Minimum Mantel Clearances for Built-In Installation
Supplied
Firebox
Hoods Must
Be Used
at All Times
Wire-mesh
Screen
Firebox Top
Mantel Shelf
3"
6"
9
1
/
4
"
Combustible
Material
1
1
/
2
" Max
Thickness
Note: All vertical
measurements are from
top of fireplace hood to
bottom of mantel shelf.
These minimum
clearances replace any
other recommended
clearances supplied
with your ANS Z21.11.2
approved gas logs.
Wall board or facing material (above firebox)
may be of combustible material, including
decorative mantel ornaments or other similar
projections off of the facing material.
Top Frame
(Combustible
Material)
12" 15" 18"
Note: Do not
cover louver
openings.
6" Min.
44
1
/
4
" Min.
40
1
/
4
" Min.
36" Min. to
Facing Wall
22
3
/
4
"
Min.
Facing
Wall
Wallboard
Wallboard
Gas Line
Facing Wall
(Base line)
Note: Gas line
may also be on
opposite side.
Figure 8 - Framing for Built-In Firebox Installation
3. If a raised platform is to be constructed, ceiling clearances must
be maintained.
4. Install gas piping to firebox location. See Installing Gas Line and
Connecting to Gas Supply in log set owner’s manual.
IMPORTANT:
If installing blower accessory. See Hard-Wiring Firebox,
page 12.
5. Carefully set firebox in front of rough opening.
IMPORTANT:
If
installing brass trim kit, see instructions included with brass trim
accessory. You must install shoulder screws from brass trim kit
now.
6. Carefully insert firebox into rough opening.
7. Attach firebox to wall studs using nails or wood screws through
holes in nailing flange (see Figure 10, page 10).
IMPORTANT:
When finishing your firebox, combustible materials such
as wall board, gypsum board, sheet rock, drywall, plywood, etc. may
be butted up next to the sides and top of the firebox. Combustible
materials should never overlap the firebox front facing.
