Installing The Fireplace Shell - Montigo HR38DF Installation, Operation & Maintenance Manual

H38DF Series Gas Fireplace

Installing The Fireplace Shell

The fireplace may be installed in any location that maintains proper clear-
ances to air conditioning ducts, electrical wiring and plumbing. Safety,
as well as efficiency of operation, must be considered when selecting
the fireplace location. Try to select a location that does not interfere
with room traffic, has adequate ventilation, and offers an accessible
pathway for Direct Vent installation. Refer to page 4 - Vent Installation
for more information.
The fireplace dimensions for H38DF models are shown below:
H
K
J
J
I
C L
C L K
Top View
D C
D
B
F
A
Front View
Figure 1. Fireplace dimensions.
A
B C D
H38DF
37 36 35 1
3 / 1 / 1 / 1 /
4 2 4 4
HL38DF 37 36 35 1
3 / 1 / 1 / 1 /
4 2 4 4
HR38DF 37 36 35 1
3 / 1 /
1 / 1 /
4
4 2 4
31
34 48 1
3 / 1 /
8 4
Clearances
These clearances apply to all dimensions except the framed opening,
where the clearance to combustibles is 0". The H38DF Series clearances
to combustible materials are:
H38DF
Top - Rear Vent *
9"
Top - Top Vent
17 "
1 /
2
Back
2"
Sides
1"
Floor
0"
Mantle**
4"
* Clearances from the top of the fireplace to a combustible ceiling
within the fireplace enclosure.
** Refer to page 14.
Unprotected combustible walls which are perpendicular to the fireplace
opening, must not project beyond the shaded area shown in Figure 25.
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.
Page 4
Installation
G
G
D
6 1/4"
B
5 1/4"
Side View
I
E F G H J
1 18 25 11 5
25
1 / 1 /
2 2
1 18 25 11
25 5
1 / 1 /
2 2
18 25
25 1 11 5
/
1 1 /
2 2
17
37 1 21 10 4
/ 7 /
1
4 8
HL38DF HR38DF
9"
9"
17 "
17 "
1 / 1 /
2
2
2" 2"
1" 1"
0"
0"
4"
4"
Framing
M"
Figure 2. Framing dimensions.
Q"
K
J
M
H38DF
42
1 /
4
L
HL38DF
42
1 /
4
HR38DF
42
3 /
4
Figure 3. Minimum Corner framing dimensions, using a 45° elbow.
When installing a shelf over the top of the fireplace, the following
guidelines must be adhered to: For Rear Vent applications the
minimum clearance from the top of the fireplace to a shelf is 9". For
K
L
Top Vent applications, the minimum clearance is 17 1/2". (Minimum
8 28
3 /
4
8 28 2" clearance must still be maintained around the vent pipes.)
3 /
4
8 28
3 /
4
7 40
12"
max.
L
Rear Vent
MEL Short
17 1/2"
T
Top Vent
Figure 4. Framing for shelves over the fireplace.
N"
0" clearance
to corners only
N"
P"
N O P Q
20 62 43
37
1 / 7 /
3 /
8
8
4
37 20 62 43
3 / 1 / 7 /
4 8 8
37
20 62 43
3 /
1 / 7 /
4
8 8
Header
Shelf
"
9
M
S
12"
max.
MIN
84"
to
Rear
96"
Vent
Header
Shelf
Figure 4a. Top Vent or
Rear Vent
M
* When sheetrock is
not used behind the
fireplace, framing
depth may be reduced
by 5/8"
O"
R
S T
N/A 36
46
N/A
36 46
N/A 36 46
Top
Vent
Cieling
Alcove
area over
Fireplace
MIN
1"
6"
Header
3"
12"
door
opening
Floor
(with alcove)
Part No. XG0147 - 011410