Venting Installation - Desa VVF36 Owner's Operation And Installation Manual

Note: You may use two 45° elbows in place of
a 90° elbow. You must follow rise to run ratios
when using 45° elbows.
For two-story applications, firestops are
required at each floor level. If an offset is
needed in the attic, additional pipe and elbows
will be required.
You.may.use.a.chase.with.a.vent.termination.
with.exposed.pipe.on.exterior.of.house..See.
Installing Vent System in a Chase..
Your DESA Heating, LLC direct-vent fireplace
has.been.tested.for.a.minimum.3'.rise.with.a.
maximum 11" wall thickness. Any horizontal
application. longer. than. 1". must. provide. a.
minimum.of.1.foot.of.vertical.rise.for.every.3.
feet of horizontal run. The maximum horizon-
tal.run.is.0'.with.8'.vertical.rise.(see.Installa-
tion for Horizontal Termination)..The.maximum.
vertical.run.is.30'.(see.Installation for Vertical
Termination, page 16).
Installing Vent System in a Chase
A.chase.is.a.vertical.box-like.structure.built.to.
enclose.venting.that.runs.along.the.outside.
of.a.building.
NOTICE: Treatment of firestops
and construction of the chase
may vary from building type to
building type. These instruc-
tions are not substitutes for the
requirements of local building
codes. You must follow all local
building codes.
Note: When installing in a chase, you should
insulate the chase as you would the outside
walls of your home. This is especially im-
portant in cold climates. Minimum clearance
between vent pipes and combustible materials
such as insulation is 1".
After. framing. chase. (see. Framing. on. page.
7).install.vent.system.by.following.installation.
instructions.
INSTALLATION FOR HORIzONTAL
TERMINATION
1. Determine the route your horizontal vent-
ing.will.take..Note: The location of horizon-
tal vent termination on exterior wall must
meet all local and national building codes
and must not be blocked or obstructed.
1

VENTING INSTALLATION

Continued
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WARNING: Do not recess
vent terminal into a wall or sid-
ing. This is a fire hazard.
. Snorkel. terminations. are. available. for.
terminations requiring a vertical rise on
the. exterior. of. building. (see. Figures. 15.
and. 16).. Snorkel. kits. are. available. for.
rigid. pipe. applications. only. to. provide. a.
14". rise. and. a. 36". rise. (see. page. 19)..
Follow.the.same.installation.procedures.
used for standard horizontal terminations.
If. installing. snorkel. termination. to. raise.
vent.termination.from.below.grade.level.
such as in a basement installation, you
must.provide.proper.drainage.to.prevent.
water. from. entering. snorkel. termination.
(see Figure 16). Do not back fill around
snorkel.termination.
Snorkel
90º
1'.Minimum
Figure 15 - Snorkel Termination
90º
1'.Minimum
Figure 16 - Snorkel Termination with
Drainage Pipe
1".
Minimum
45º
Snorkel
1".
Minimum
45°
Adequate
Drainage
56131H