20306741
17
BLDV7 Series Gas Fireplace
VENTING INSTALLATION
VO584-100
Vent Opening
2/99 djt
Vent Opening for Combustible Walls
95/8”
(244 mm)
Min.
Fireplace Hearth
Framing Detail
Opening for Noncombustible Wall
71/2”
(190 mm)
Fireplace Hearth
FP2293
Figure 16 -
Locate vent opening on wall
95/8”
(244 mm) Min.
VERTICAL SIDEWALL INSTALLATION -
TWIST LOCK PIPE
Step 1
Locate vent opening on the wall. It may be necessary to
first position the fireplace and measure to obtain hole lo
-
cation. Depending on whether the wall is combustible or
noncombustible, cut opening to size.
Figure 16
(For com-
bustible walls first frame in opening.)
NOTE:
When using flex vent, the opening will have to be
measured according to the 1/2” (13 mm) rise in 12” (305
mm) vent run.
Combustible Walls:
Cut a 95/8”H x 95/8”W (244 x 244
mm) hole through the exterior wall and frame as shown.
Figure 16
Noncombustible Walls:
Hole opening must be 71/2”
(191 mm) in diameter.
Step 2
Secure firestop to the inside frame, center in the 95
/8" x
95/8" vent opening.
Step 3
Place fireplace into position. Measure the vertical height
(X) required from the base of the flue collars to the center
of the wall opening.
Figure 17
X
X
Figure 17 -
Vertical Height
Requirement
FP1181
Step 4
Using appropriate length of pipe section(s) attach to fire
-
place with three (3) screws. Follow with the installation of
the inner and outer elbow, again secure joints with three
(3) sheet metal screws.
Step 5
Measure the horizontal length requirement including a 2”
(51 mm) overlap, i.e. from the elbow to the outside wall
face plus 2” (51 mm) (or the distance required if installing
a second 90° elbow).
Figure 18
Always install horizontal venting on a level
plane.
X
X
Figure 18 -
Horizontal Length
Requirement
FP1182
Step 6
Use appropriate length of pipe sections - telescopic or
fixed - and install. The sections which go through the wall
are packaged with the starter kit, and can be cut to suit if
necessary.
