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125205-01E
7
VENT TERMINATION CLEARANCES
Final position of your fireplace depends on
location of the vent termination in relation to
clearances that must be observed as shown
in Figure 5 on page 8.
The vent system serves as the “chimney” as
well as combustion air supply (air intake).
The horizontal run must have a rise of 1/4"
(0.6 cm) for every 12" (30.48 cm) of horizon
-
tal run towards the termination. Maximum
horizontal run depends on vertical rise from
fireplace adapter collar to vent termination
(see table below).
VERTICAL
HORIZONTAL
0
to
1 ft (30.48 cm)
1 ft (30.48 cm)
to
4 ft (121.92 cm)
2 ft (60.96 cm)
to
8 ft (243.84 cm)
3 ft (91.44 cm)
to
12 ft (365.76 cm)
4 ft (121.92 cm) to
16 ft (487.68 cm)
5 ft (152.40 cm) to
15 ft (457.20 cm)
6 ft (182.88 cm) to
14 ft (426.72 cm)
7 ft (213.36 cm) to
13 ft (396.24 cm)
8 ft (243.84 cm) to
12 ft (365.76 cm)
WARNING: Never allow the
vent to run downward as this
may cause excessive tempera
-
tures which could cause a fire.
PRE-INSTALLATION
PREPARATION
Continued
Figure 3 - Framing Dimension
Figure 4 - Corner Installation
A
B
E
F
G
H
D
C
Nailing Tabs
WARNING: Horizontal sec-
tions of this vent system require
a minimum clearance of 2" from
the top of the pipe and 1" mini
-
mum to the sides and bottom.
Vertical sections of this system
require a minimum of 1" clear
-
ance to combustible materials
on all sides of the pipe.
FRAMING
Once the final location has been determined, ob
-
serving height clearances for vent termination, you
may construct framing using dimensions shown in
Figures 3 and 4, depending on your installation.
If the appliance is to be installed directly on
carpeting, tile (other than ceramic) or any com-
bustible material other than wood flooring, appli
-
ance must be installed on a metal or wood panel
extending full width and depth of the appliance.
Figure 2 - Mantel Clearances
C
B
A
D
E
F
G
Top of Louver Opening
3
2
1
4
5
6
7
Wall
B
A
C
CD36M-LS CD42M-LS
A
36
1
/
8
"
40
1
/
8
"
B
41
1
/
4
"
48
1
/
4
"
C
23
1
/
2
"
25
5
/
8
"
CD36M-LS
CD42M-LS
A
35
3
/
4
"
41
5
/
8
"
B
15"
21
5
/
8
"
C
49
5
/
8
"
58
1
/
2
"
D
10
3
/
8
"
13
1
/
2
"
E
13
3
/
4
"
16
3
/
4
"
F
41"
48"
G
41
1
/
4
"
48
1
/
4
"
H
68
1
/
2
"
81
1
/
2
"
