33740-9-1015
Page 19
33740-9-1015
Page 18
INSTALLATION (continued)
Vent Runs
In planning the installation for the fireplace, it is necessary to install
certain components before the appliance is completely positioned
and installed. These include the direct vent system, gas piping for
the appliance and the electrical wiring.
The appliance can be mounted on any of the following surfaces:
1. A flat, hard surface
2. A raised wooden platform
3. Four corner supports (Example: Four concrete masonry blocks.)
These supports must be positioned adequate is made with
bottom standoffs). See local codes.
Note For Horizontal Vent Runs (Figure 25):
A specific wall thimble (see parts list page 55) must be used
for horizontal vent installations through combustible wall.
Figure 25
VERTICAL, 90
°
ELBOW WITH HORIZONTAL TERMINATION
(12 inches minimum vertical rise shown)
Figure 26
INSTALLATION (continued)
VERTICAL, 90
°
ELBOW TO HORIZONTAL OUT THE WALL
(12 inches minimum rise before elbow)
NOTE:
A “B” dimension greater than 18 inches will require a
vertical rise before the elbow that is greater than 12 inches. See
Venting graph on page 22.
PIPE
LENGTH (A)
VENT TO EXTERIOR
WALL (B)
WALL
THICKNESS (C)
6”
15” to 16-1/2”
4-3/4” to 6-1/4”
9”
18” to 19-1/2”
7-3/4” to 9-1/4”
12”
21” to 22-1/2”
10-3/4” to 12-1/4”
Figure 27
CORNER INSTALLATION - VERTICAL, 90
°
ELBOW TO
HORIZONTAL OUT THE WALL
WALL FIRESTOP/
THIMBLE
VENT
CAP
6”
MINIMUM
9”
MINIMUM
D
B
A
C
A
52-1/2”
B
37-1/16”
C
15-1/16”
D
74-1/8”
Figure 28
Note:
A horizontal vent with the minimum required vertical rise (using
a 12 inch section of vent before the elbow) will use a maximum 9
inch section of horizontal vent before the termination.
