Desa VVF36 Owner's Operation And Installation Manual page 13

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.
square hole (for noncombustible material
such as masonry block or concrete, a 8
diameter.hole.is.acceptable)..See.Figure.
18..The.center.of.hole.should.line.up.with.
center.line.of.rigid.vent.pipe..Cut.a.10.
x.10. / " square hole through combustible
3
4
exterior. wall. (8.
combustible)..Frame.as.necessary.
Female.
Locking.
Lugs
Male.Slots
Rigid.Vent.Pipe
Figure 17 - Vent Pipe Connections
56131H
VENTING INSTALLATION
/ ". diameter. hole. if. non-
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Continued
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.
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
/ ".
3
4
for stucco, brick, concrete, or other types
of siding.
/ ".
1

Vent Opening
Combustible Wall
/ ".
3
4
3
10 / "
4
Vent Opening
Noncombustible Wall
1
8 / "
2
Figure 18 - Vent Opening Requirements
Figure 19 - Installing Horizontal Vent Cap
(Noncombustible Exterior)
/ ".hole.on.the.exterior.
1

3
10
3
10 / "
4
(Framing
Detail)
/ " Inside Framing
4
Vent.Cap
Wood.Screw
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