51D0528
19
Figure 19 - Vent Opening Requirements
9
1
/
2
"
(241mm)
11
1
/
2
"
(292mm)
4
3
/
8
"
(121mm)
7
1
/
2
"
(190mm)
Note: Horizontal runs of vent
must be supported every three
feet (914mm). Use wall straps
for this purpose.
Figure 20 - Rigid Vent Pipe Connections
Female
Locking Lugs
Male Slots
REAR WALL VENT INSTALLATION
When installed as a rear vent unit this appliance may be vented directly to a termination located on the rear outside termina-
tion behind the appliance
• 45° elbows may only be attached to rear when used to direct the flue skyward (to achieve additional rise). Do not attach
45° elbows to rear of appliance in which the flue turns either left or right and terminates horizontal.
• The maximum horizontal distance between the rear of the appliance and the outside face of the outside termination is
20" (508 m).
See Figure 18.
VENTING INSTALLATION
1. Locate and cut the vent opening in the wall. For
combustible walls first frame in opening.
See
Figure 17.
Combustible Walls:
Cut a 11
1
⁄
2
"H x 9
1
⁄
2
" W (292mm
x 24mm) hole through the exterior wall and frame as
shown.
See Figure 19.
Noncombustible Walls:
Hole opening should be
7
1
⁄
2
" (190mm) in diameter.
2. Rigid vent pipes and fittings have special twist-lock
connections. Assemble the desired combination of
pipe and elbows to the appliance adaptor with pipe
seams oriented towards the wall or floor.
Twist-lock Procedure:
The female ends of the pipes
and fittings have three locking lugs (indentations).
These lugs will slide straight into matching slots on
the male end of adjacent pipes and fittings. Push the
pipe sections together and twist one section clockwise
approximately one-quarter turn until the sections are
fully locked.
See Figure 20.
3. Attach vent pipe assembly to the fireplace. Set fire-
place in front of its permanent location to insure mini-
mum clearances. Mark the wall for a 11
1
⁄
2
"H x 9
1
⁄
2
"W
(292mm x 24mm) rectangle hole (for noncombustible
material such as masonry block or concrete, a 7
1
/
2
"
[190mm] diameter hole is acceptable).
See Figure 19.
The center of the hole should line up with the center
line of the horizontal rigid vent pipe end. Be sure to
allow for minimum rise. Cut a 11
1
/
2
"x9
1
/
2
" (292mm X 241mm) rectangle hole through combustible exterior wall (7
1
/
2
"
[190mm] diameter hole if noncombustible). Frame as necessary. Allow
1
/
4
" minimum rise per foot.
See Figure 19.
Continued on Next Page
Figure 18 - Rear Vent Application,
Maximum Horizontal Distance
Top View Flat Installation
