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56131H
13
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.10.
3
/
4
".
square hole (for noncombustible material
such as masonry block or concrete, a 8
1
/
".
diameter.hole.is.acceptable)..See.Figure.
18..The.center.of.hole.should.line.up.with.
center.line.of.rigid.vent.pipe..Cut.a.10.
3
/
4
".
x.10.
3
/
4
" square hole through combustible
exterior.wall.(8.
1
/
".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 19).
.
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
/
".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
(Framing
Detail)
10
3
/
4
"
10
3
/
4
" Inside Framing
10
3
/
4
"
8
1
/
2
"
Vent Opening
Combustible Wall
Vent Opening
Noncombustible Wall
Figure 19 - Installing Horizontal Vent Cap
(Noncombustible Exterior)
Wood.Screw
Vent.Cap