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125206-01B
15
VENTING INSTALLATION
Continued
2. Rigid vent pipes and fittings have special
twist-lock connections. Assemble desired
combination of pipe and elbows to appli-
ance adaptor with pipe seams oriented
towards wall or floor.
Twist-lock Procedure:
Female ends
of pipes and fittings have four locking
lugs (indentations). These lugs will slide
straight into matching slots on male ends
of adjacent pipes and fittings. Push pipe
sections together and twist one section
clockwise approximately one-quarter turn
until sections are fully locked. See Figure
17.
Note: Horizontal runs of vent must
be supported every three feet. Use wall
straps for this purpose.
3. Attach vent pipe assembly to fireplace us
-
ing twist lock connections for rigid pipe or
clamp method for flex pipe. Set fireplace
in front of its permanent location to insure
minimum clearances. Mark wall for a 11
1
/
2
"
square hole (for noncombustible material
such as masonry block or concrete, a 8
1
/
2
"
diameter hole is acceptable). See Figure
18. The center of hole should line up with
center line of rigid vent pipe. Cut a 11
1
/
2
"
x 11
1
/
2
" square hole through combustible
exterior wall (8
1
/
2
" diameter hole if non-
combustible). Frame as necessary.
Figure 17 - Vent Pipe Connections
Male Slots
Female
Locking
Lugs
Rigid Vent Pipe
4. Three types of vent caps are available
for horizontal terminations. Two square
terminals are available; one for rigid pipe
applications and one for flex pipe ap
-
plications. A round vent termination with
a slip fit connection is also provided for
rigid pipe applications to be used when
a wall thickness or off spacing must be
accommodated. Each may be purchased
as a kit that includes a 45° elbow and a
firestop that accommodates a square or
round termination (see
Parts List for Vent-
ing Kits and Components
, page 22).
Noncombustible Exterior Wall:
Apply a
bead of non-hardening mastic around out-
side edge of vent cap. Position vent cap
in center of the 8
1
/
2
" hole on the exterior
wall with arrow on vent cap pointing up.
Attach vent cap with four wood screws
provided (see Figure 19).
Note: Replace
wood screws with appropriate fasteners
for stucco, brick, concrete, or other types
of siding.
Figure 18 - Vent Opening Requirements
Figure 19 - Installing Horizontal Vent Cap
(Noncombustible Exterior)
Wood Screw
Vent Cap
(Framing
Detail)
11
1
/
2
"
(29.2 cm)
11
1
/
2
" Inside Framing
(29.2 cm)
11
1
/
2
"
(29.2 cm)
8
1
/
2
"
(21.6 cm)
Vent Opening
Combustible Wall
Vent Opening
Noncombustible Wall
f i r e - p a r t s . c o m
