Horizontal With Vertical Rise Installation - Vermont Castings 500DVMNSCSB Installation And Operating Instructions Manual

DVM Series Direct Vent Gas Fireplace
•
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
1 + 2 + 3 + 4 = 270°
1
2
3
4
Example: Elbow 1
Elbow 2 =
Elbow 3 =
Elbow 4 =
Total Angular Variation
Figure 24 -
Maximum Elbow Usage
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
x 267 mm) hole through the interior wall.
Combustible Exterior Walls: Cut a 10
x 267 mm) square hole through the exterior wall frame.
Figure 25
Noncombustible Walls: Hole opening should be 8
mm) in diameter.
2. The center of the hole should align with the center line
of the horizontal rigid vent pipe end. Allow
rise per foot. Figure 25
20
1
2
3
4
= 90°
45°
45°
90°
= 270°
⁄ "H x 10 ⁄ " W (318
1 1
2 2
⁄ "H x 10 ⁄ " W (267
1 1
2 2
⁄ " (216
1
2
⁄ " minimum
1
4
⁄
10 "
1
2
(267 mm)
10 ⁄ "
1
2
(267 mm)
Combustible Wall
8 ⁄ "
1
2
(216 mm)
Figure 25 -
Exterior Wall Framing Dimensions
WARNING
You may use a reducer from 5"x8" to 4"x6
VO584-100
for horizontal with vertical rise applications. ONLY
Vent Opening
use framing instructions below when using 4"x6
2/99 djt
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.
1. Locate and cut the vent opening in the wall. For com-
bustible walls first frame in opening.
Combustible Interior Walls: Cut a 11
x 241 mm) hole through the interior wall.
Combustible Exterior Walls: Cut a 9
241 mm) square hole through the exterior wall frame.
Figure 26
Noncombustible Walls:Hole opening should be 7
mm) in diameter.
2. The center of the hole should align with the center line
of the horizontal rigid vent pipe end. Allow
rise per foot. Figure 26
VENTING INSTALLATION
Framing
VO584-100
⁄ " or 4"x7"
5
8
⁄ "H x 9 ⁄ " W (292
1 1
2 2
⁄ "H x 9 ⁄ "W (241 x
1 1
2 2
⁄ " minimum
1
4
20306747
⁄ " or
5
8
⁄ " (190
1
2