Clearances - Montigo L42DF Installation & Maintenance Manual

L42DF* Indoor Gas Fireplace
Section 2: Framing
1). Frame in the enclosure for the unit with framing materials. The
framed opening for the assembled fireplace is 42" wide, x 37" high x
22⅝" 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.
Figure 2. Framing dimensions, (Straight wall & Corner
Installation).
L.P. & N.G
1" Min
1" Min
REAR VENT
N.G. ONLY
Figure 3. Combustible Framing for Top Vent, with shelf above
fireplace.
2" Min
REAR VENT
N.G. ONLY
Figure 4. Combustible Framing for Rear Vent with shelf
above the fireplace.
Page 6
Installation
0" clearance
to corners only
60 5/8"
* When sheetrock is not used behind the
fireplace, framing depth 22⅝" may be
reduced by 5/8".
Combustible Header,
with Supplied shield.
Combustible
Shelf
10"
37"
33"
Combustible Header,
with Supplied shield.
12" Max.
N.G.
Combustible
Shelf
10"
37"
Combustible Header,
with Supplied shield.
Combustible Shelf
PEL Short
90 elbow
.
N.G. & L.P
40 1/2"
2" Min
Figure 5. Combustible Framing for shelf over the fireplace,
Top vent.
N.G. & L.P.
Top Vent
Min 1"
1" min.
12" max.
MIN
96"
Rear
Vent
REAR VENT
N.G ONLY
Figure 5a. Non Combustible Framing for Top Vent or Rear
Vent, with alcove. Note: Straight through the wall rear
vent available for Natural Gas only.

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 2" from the rear of
the fireplace to a wall, or any combustible materials, and 10" clearance
from the top of the fireplace to the underside of any combustible shelf
materials.
For Top Vent applications, the minimum clearance is 2" from the rear
of the fireplace to a wall, or any combustible materials, and 21" to the
underside of any combustible shelf materials.
(Minimum 2" clearance must still be maintained around the vent
pipes.)
L42DF* 10" 21"
21"
37"
Cieling
Alcove over fireplace
(Noncombustible
Material ONLY)
Non-combustible
header
8"
3"
12"
door
opening
Floor
2" 1" 0" 6"
XG0181 - 112811