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5608 741 - 04
Vitodens Rigid and Flex Venting Systems Installation
Grade or Max.
snow level
Support bracket
Attach termination
elbow with screen
Caulk
Vent
riser
min. 12 in.
(305 mm)
max. 36 in.
(914 mm)
Side wall
Side Wall Vent Termination - Stainless Steel, CPVC or PP(s)
IMPORTANT
WARNING
Vent termination must be at least 12 in. (300 mm)
above the anticipated snow level (consult your local
building authorities or local weather office). Locate
vent termination in such a way that it cannot be
blocked by snow.
The exhaust vent/air intake system must terminate so
that proper clearances are maintained as cited in local
codes or the latest edition of the “Natural Gas and
Propane Installation Code” CAN/CSA-B149.1 (Canada),
or the “National Fuel Gas Code” ANSI Z223.1 (NFPA 54)
(U.S.A.). See page 8.
Side wall vent termination (front view)
For PP(s) systems, all exhaust vent and air intake piping
and elbows exposed outside, must be UV resistant
polypropylene (supplied by the vent manufacturer).
IMPORTANT
If less than 10 in.
required (see D in
illustration below)
min 12 in. (305 mm)
Intake
vent
terminal,
90°
Stainless
steel mesh
Exhaust vent terminal,
45° or 90°
min. 12 in.
(305 mm)
(see also
Vent Riser
below)
Grade or
Snow Level
10 in. min.
(254 mm)
Flue
Air
D
min 2 in. (51 mm)
max 5 in. (127 mm)
max 9 in.
(229 mm)
All PP(s) vent termination
elbows must be secured in
place as specified by the
vent manufacturer.
Side wall vent termination
min 12 in.
(305 mm)
min. 6 in.
(152 mm)
Side wall vent termination (side view)
Installation of field fabricated vent riser
Direct Venting (Two-pipe System)