FMI BV42(B) - Manual (Page 9)

www.fmiproducts.com 123492-01F 9
66 7 /
8
"
72 7 /
8
"
47 3 /
8
"
52 1 /
2
"
INSTALLATION
Continued
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.
Optional brass trim accessories are available
(see Accessories, page 14). The brass trim
will extend past sides of firebox approximately
1/2". This will cover the rough edges of the
wall opening. If installing a mantel above the
firebox, you must follow the clearances shown
in Figure 5. Follow the instructions below to
install the firebox in this manner.
1. Frame in rough opening. The firebox
framing should be constructed of 2 x 4
lumber or heavier. Use dimensions in the
table and rough opening layout in Figure
6a. Adjust framing so that firebox flushes
with finished wall surface. If installing in a
corner, use dimensions in Figures 6b for
rough opening.
2. Install gas piping to firebox location. See
Installing Gas Line, page 10 and Con-
necting to Gas Supply in log set owner’s
manual.
3. Carefully set firebox in front of rough open-
ing with back of firebox inside wall open-
ing. IMPORTANT: If installing a perimeter
trim kit, see instructions included with
trim accessory. You must install shoulder
screws from trim kit now.
4. Carefully insert firebox into rough opening.
5. Attach firebox to wall studs using nails
or wood screws through holes in nailing
flange (see Figure 7, page 10).
6. If using an optional perimeter trim kit,
install the trim after final finishing and/or
painting of wall. See instructions included
with trim accessory for attaching trim.
7. Install and properly test gas log heater.
Follow installation instructions included
with the vent-free gas log heater that is
being installed.
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.
Figure 5 - Minimum Mantel Clearances
for Built-In Installation
Supplied
Firebox Hood
Must Be Used
at All Times
Wire-mesh
Screen
Firebox
Noncombustible
Material May
Project Off this
Surface above
the Firebox Hood
Mantel Shelf
Note: Any portion of the
mantel shelf must NOT
extend beyond this profile.
12" 16" 20"
1 1 / 2
"
6 3 / 4
"
12"
Note: All vertical
measurements are
from top of fireplace
hood opening to
bottom of mantel shelf.
These minimum
clearances replace any
other recommended
clearances supplied
with your ANSI 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 projec-
tions off of the facing
material.
Framing
Material
rough opening Dimensions for
built-in Installation
Model
Front Width
(Inside to Inside) Height
Depth
(Min.)
36" 38 1 /
4
" 37 5 /
8
" 22"
42" 44 1 /
4
" 37 5 /
8
" 22"
Figure 6 - Rough Opening for Installing
in Wall
Depth
(Minimum)
Width
(Inside to Inside)
Height
Figure
6a
Figure
6b