18-CD29D1-11
21
Installer’s Guide
COMBUSTION
AIR
12" MIN TO
OVERHANG
1" + "
VENT
1 2
MAINTAIN 12 IN.
MINIMUM CLEARANCE
ABOVE HIGHEST
ANTICIPATED SHOW
LEVEL OR GRADE
WHICH EVER IS GREATER
Avoid areas where staining or condensate drippage may be
a problem.
Location of the vent/ wind terminal should be chosen to
meet the requirements of Figure 26 for either direct or non-
direct vent applications.
PITCH – Venting through the wall must maintain 1/4" per
foot pitched upward to insure that condensate drains back
to the furnace.
FLUE GAS DEGRADATION – The moisture content of
the flue gas may have a detrimental effect on some building
materials. This can be avoided by using the roof or chimney
venting option. When wall venting is used on any surface
that can be affected by this moisture, it is recommended
that a corrosion resistant shield (24 inches square) be used
behind the vent terminal. This shield can be wood, plastic,
sheet metal, etc. Also, silicone caulk all cracks, seams and
joints within 3 feet of the vent terminal.
COMBUSTIBLE MATERIAL WALL
A minimum clearance of 1" to combustible materials must
be maintained when using single wall stainless steel vent-
ing. See Figure 30.
BAYAIR30AVENTA
(Sidewall)
l
Shield material to be a minimum of 24 gauge stainless or
aluminized sheet metal. Minimum dimensions are 12"x12".
Shield must be fastened to both inside and outside of wall.
Use screws or anchor type fasteners suited to the outside or
inside wall surfaces.
NONCOMBUSTIBLE MATERIAL WALL
The hole through the wall must be large enough to main-
tain pitch of vent and properly seal.
Use cement mortar seal on inside and outside of wall.
See Figure 31.
x
SUPPORT HORIZONTAL PIPE EVERY
3' 0" WITH THE FIRST SUPPORT AS
CLOSE TO THE FURNACE AS POSSIBLE.
INDUCED DRAFT BLOWER, HOUSING,
AND FURNACE MUST NOT SUPPORT
THE WEIGHT OF THE FLUE PIPE.
COUPLING
(PLASTIC
VENTING)
STUD
PVC WALL
MOUNT FLANGE
(OPTIONAL)
APPROVED
TERMINATION
1” CLEARANCE
(AIR SPACE)
VENTING THROUGH COMBUSTIBLE WALLS
Pitch - 1/4 Inch Per Foot
CLEARANCE (0” ACCEPTABLE FOR PVC VENT PIPE)
(1” ACCEPTABLE FOR TYPE 29-4C STAINLESS STEEL VENT PIPE)
12” MINIMUM ABOVE
NORMALLY EXPECTED
SNOW ACCUMULATION
LEVEL
6 IN. MIN.
(TO JOINT)
COUPLING
(PLASTIC
VENTING)
PVC WALL
MOUNT FLANGE
(OPTIONAL)
APPROVED
TERMINATION
CEMENT
MORTAR SEAL
INSIDE &
OUTSIDE
VENTING THROUGH NON-COMBUSTIBLE WALLS
Pitch - 1/4 Inch Per Foot
12” MINIMUM ABOVE
NORMALLY EXPECTED
SNOW ACCUMULATION
LEVEL
6 IN. MIN.
(TO JOINT)
;
z
For Canadian applications, horizontal vent termination kits must meet
ULC-S636.
Содержание ADH1B040A9241A
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