20
20306747
DVM Series Direct Vent Gas Fireplace
VENTING INSTALLATION
Example:
Elbow 1 = 90°
Elbow 2
=
45°
Elbow 3
=
45°
Elbow 4
=
90°
Total Angular Variation = 270°
Figure 24 -
Maximum Elbow Usage
1
2
3
4
1
2
3
4
1 + 2 + 3 + 4 = 270°
•
For each 45° elbow installed in the horizontal run, the
length of the horizontal run MUST be reduced by 18"
(457 mm). This does not apply if the 45° elbows are
installed on the vertical part of the vent system.
•
The maximum number of elbow degrees in a system is
270°.
Figure 24
HORIZONTAL WITH VERTICAL RISE
(THROUGH-THE-WALL) INSTALLATION
1. Locate and cut the vent opening in the wall. For com-
bustible walls first frame in opening.
Combustible Interior Walls:
Cut a 12
1
⁄
2
"H x 10
1
⁄
2
" W (318
x 267 mm) hole through the interior wall.
Combustible Exterior Walls:
Cut a 10
1
⁄
2
"H x 10
1
⁄
2
" W (267
x 267 mm) square hole through the exterior wall frame.
Figure 25
Noncombustible Walls:
Hole opening should be 8
1
⁄
2
" (216
mm) in diameter.
2. The center of the hole should align with the center line
of the horizontal rigid vent pipe end. Allow
1
⁄
4
" minimum
rise per foot.
Figure 25
1. Locate and cut the vent opening in the wall. For com-
bustible walls first frame in opening.
Combustible Interior Walls:
Cut a 11
1
⁄
2
"H x 9
1
⁄
2
" W (292
x 241 mm) hole through the interior wall.
Combustible Exterior Walls:
Cut a 9
1
⁄
2
"H x 9
1
⁄
2
"W (241 x
241 mm) square hole through the exterior wall frame.
Figure 26
Noncombustible Walls:
Hole opening should be 7
1
⁄
2
" (190
mm) in diameter.
2. The center of the hole should align with the center line
of the horizontal rigid vent pipe end. Allow
1
⁄
4
" minimum
rise per foot.
Figure 26
Figure 25 -
Exterior Wall Framing Dimensions
VO584-100
Vent Opening
2/99 djt
10
1
⁄
2
"
(267 mm)
10
1
⁄
2
"
(267 mm)
Combustible Wall
Framing
VO584-100
8
1
⁄
2
"
(216 mm)
You may use a reducer from 5"x8" to 4"x6
5
⁄
8
" or 4"x7"
for horizontal with vertical rise applications. ONLY
use framing instructions below when using 4"x6
5
⁄
8
" or
4"x7"venting.
If the reducer is installed at the rear of the unit, you
must immediately follow with a 90° elbow for a vertical
rise before continuing with any horizontal run. There is
a minimum total height of 7 feet from the fireplace floor
to the last section of pipe before horizontal run. Refer to
graph on Page 16.
WARNING
