Owner`s manual

Installation
buiLt-in inStaLLation:
Installation without a masonry replace -
The M55C-FPI can be installed without an existing masonry replace by building an enclosure for the
unit to be installed in. This enclosure must be a minimum of 18” deep, 36” wide and 23-1/4” high and
made with ½” noncombustible cement board. The oor of the enclosure must consist of a minimum of
1-1/4” air space and a layer of ½” noncombustible cement board and a layer of tile. The air space must
be supported with sheet metal studs and have no combustible material in the air space. All venting for
Built-In installation must use PL or L venting and be installed with vent manufacturer’s recommended
clearances. Refer to page 9 for Clearances to Combustibles.
Figure 11: Built-In Specifications
22
36"
1
1
4
"
48"
37"
16"
26"
11
1
2
"
9
5
8
"
18"
23 1/4"
5
1
8
"
4
7
8
"
11
5
8
"
13
3
8
"
9
5
8
"
C
L
2X4 Steel studs
minimum 1-1/4" thick
Wood Trim
Cement board
box and facing
Cement board
screwed to steel studs
Wood Framing
Wall
Thimble
Tile over cement
board
Optional fresh
air intake
Box Depth is 18" minimum
for Rear vent and may require
20" for thimble clearance
on vertical vent