Framing & Clearances; Framing The Fireplace; Clearances - Montigo P42DF Installation & Maintenance Manual

P42DF* Indoor Gas Fireplace
Section 2: Framing & Clearances
Frame in the enclosure for the unit with framing materials. The
1).
framed opening for the assembled fireplace is 42" wide, x 42" high x
21 1/4" deep, see Figure 2
.
NOTE: When constructing the framed opening, please ensure
there is access to install the gas line when the unit is installed.
See Figure 2.
Noncombustible
Stud
Figure 2. Framing dimensions, (Straight wall & Corner
Installation).
Combustible Header
Combustible Shelf
12" max.
RHS102
27 1/2"
Figure 3. Combustible Framing for shelves over the fireplace,
Rear vent. Note: Rear vent available for Natural Gas only.
Combustible Header
Combustible Shelf
RHS102
MEL Short
90° elbow
40 1/2"
Figure 4. Combustible Framing for shelves over the fireplace,
Top vent.
Page 6
Installation
0" clearance
to corners only
59 3/4"
* When sheetrock is not used behind the
fireplace, framing depth 21 1/4" may be
reduced by 5/8".
Non Combustible
Stud 1/2" Above Top
9"
42"
34 1/2"
17 1/2"
50 1/2"
N.G. & L.P.
Top Vent
Min 1"
12" max.
96"
MI N
Rear
Vent
Figure 5. Non Combustible Framing for Top Vent or Rear
Vent, with alcove.

Clearances

When installing a shelf over the top of the fireplaces, the following
guidelines must be adhered to:
For Rear Vent applications, the minimum clearance is 0" from the insulation
jacket to a wall, or any combustible materials, and 9" clearance from the
top of the fireplace to the underside of any combustible shelf materials.
For Top Vent applications, the minimum clearance is 0" from the
insulation jacket to a wall, or any combustible materials, and 17 1/2" to
the underside of any combustible shelf materials.
* (0" clearance from insulation jacket)
P42DF* 9" 17 1/2"
Ceilin g
Non-Combustibl e
Materials Only
Alcove
area over
Fireplac e
Non-combustible
7 5/8" header
3"
12"
door
opening
Floor
0" 0" 0" 4"
XG0195 - 030712