Section 2: framing, Installation – Montigo H38DF User Manual
Page 7

Page 7
XG0147 - 150204.1
H*38DF Gas Fireplace
Installation
Section 2: Framing
1).
Frame in the enclosure for the unit with framing materials. The
framed opening for the assembled H*38DF* fireplace is 37 3/4" wide,
x 42" high x 21⅛" deep. For assembled HW38DF* fireplace is 37 3/4"
wide, x 42" high x 22⅛" 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 23.
* When sheetrock is not used behind
the fireplace, framing depth "O" may be
reduced by 5/8".
0" clearance
to corners only
P”
N”
Q”
N”
M”
O”
Figure 5. Non Combustible Framing for Top Vent or Rear Vent, with Alcove
ABOVE FIREPLACE.
* 3" minimum for HW38DF.
Figure 2. Framing dimensions.
Figure 4. Combustible Framing for shelves over the fireplace, Top vent.
* 3" minimum for HW38DF
Figure 3. Combustible Framing for shelves over the fireplace, Rear vent
* 3" minimum for HW38DF.
M
N
O
P
Q
R
S
T
H*38DF
42
37 3/4 21 1/8
62
43 7/8
N/A
35 3/4
46
HW38DF
42
37 3/4 22 1/8
62
43 7/8
N/A
36 1/2
46
Min.
84”
12”
door
opening
3”
Rear
Vent
Ceiling level
Floor
Top Vent
18”
max.
2”
min.
*
Min 1”
Non-Combustible
Header
Non-Combustible
materials. Alcove
over fireplace.
28 3/4”
Exterior
Wall
Non-Combustible
Nailing Flange,
(supplied) figure 7.
M
9”
S
28 3/4”
18”
max.
2” min.
*
Combustible
Header
Combustible
Shelf
Non-Combustible
Nailing Flange,
(supplied) figure 7.
Exterior
Wall
42”
PEL Shor t
90° elbow
M
17 1/2”
2” min.
*
Combustible
Header
Combustible
Shelf
Non-Combustible
Nailing Flange,
(supplied) figure 7.
Exterior
Wall
Note: Images are shown without screens for clarity purposes. However,
your fireplace should not be operated without proper installation of
screens.
Fireplace without standard screen (pre-January 2015 manufacturing).
Fireplace with standard screen (post January 2015 manufacturing).
Min.
84”
10.5”
door
opening
3”
Rear
Vent
Ceiling level
Floor
Top Vent
18”
max.
2”
min.
*
Min 1”
Non-Combustible
Header
Non-Combustible
materials. Alcove
over fireplace.
28 3/4”
Exterior
Wall
Non-Combustible
Nailing Flange,
(supplied) figure 7.