Framing The Fireplace; Clearances - Montigo L52DF Installation & Maintenance Manual

L52DF* Indoor Gas Fireplace
Section 2: Framing
Frame in the enclosure for the unit with framing materials. The
1).
framed opening for the assembled fireplace is 52" wide, x 39½" high x
25" 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.
* When sheetrock is
not used behind the
fireplace, framing
depth may be reduced
52"
by 5/8"
Framing / Header,
39 1/2"
supplied shield
shelf
Figure 2. Framing dimensions.
0" clearance
10
to corners only
39 1/2
68 1/4"
52"
96 1/2"
Rear Vent
Figure 3. Minimum Corner framing dimensions, using a 45°.
Ceiling
MIN
84"
to
96"
Figure 3a. Top Vent or Rear Vent
Page 6
Installation
elbow
Header
Shelf
25"
24
40
Top Vent
Top
Non-Combustible
Vent
Materials Only
Alcove
area over
Fireplace
MIN
1"
7"
Header
3"
Floor
with Non-Combustible materials)
(
When installing a shelf over the top of the fireplace, the following
guidelines must be adhered to: For Top Vent applications, the
minimum clearance is 24" and 10" on Rear Vent. (Minimum
2" clearance must still be maintained around the vent pipes.)
Framing / Header,
supplied shield
Rear Vent
Figure 4. Framing for shelves over the fireplace, (Combustible materials).
Ceiling

Clearances

39 1/2
These clearances apply to all dimensions except the framed opening,
where the clearances to combustibles is 0". The L52DF clearances to
MIN
84"
combustible materials are:
to
96"
Top - Rear Vent *
Top - Top Vent
Back
Sides
Floor
Mantle**
* Clearance from the top of the fireplace to a combustible ceiling within the fireplace enclosure
** Refer to the 'Finishing around the fireplace' section of this manual.
Unprotected combustible walls which are perpendicular to the fireplace
opening, must not project beyond the shaded area shown in Figure 24b.
For protection against freezing temperatures, it is recommended that
outer walls of the chase be insulated with a vapor barrier. This will reduce
the possibility of a cold-air convection current on the fireplace.
.
elbow
shelf
10
40
39 1/2
Top Vent
Top
Non-Combustible
Vent
Materials Only
Alcove
area over
Fireplace
MIN
1"
7"
Header
3"
10"
24"
3"
Floor
2"
0"
4"
Header
Shelf
24
39 1/2
XG0185 - 050611