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Figure 15
COMBUSTION
AIR INLET
40" UPFLOW OR
DOWNFLOW MODELS
HORIZONTAL VENTING THROUGH WALL
These Furnaces may be installed as direct vent
(as shipped) or as nondirect vent. Installation
must conform to national, state, and local codes.
The vent & inlet terminals must be located at least 12"
minimum above normally expected snow accumulation
level.
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 16 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 mois-
ture, it is recommended that a corrosion resistant
shield (24 inches square) be used behind the vent termi-
nal. This shield can be wood, plastic, sheet metal, etc.
Also, silicone caulk all cracks, seams and joints within 3
feet of the vent terminal.
18-CD25D1-2
SEE VENTING TABLE
STRAPS OR OTHER SUITABLE SUPPORTS
AT MAXIMUM OF 3'-0" INTERVALS
UPWARD PITCH -- 1/4" PER FOOT
FIRST SUPPORT SHOULD BE AS
CLOSE TO FURNACE CONNECTION
AS POSSIBLE.
NOTE: ANY FITTINGS PASSING
THROUGH AN UNHEATED SPACE
MUST BE INSULATED.
Installer's Guide
NOTE: VENT AND INLET MUST BE SUP-
PORTED AT A MAXIMUM OF 3' INTERVALS
USE ONLY
APPROVED
TERMINATION
VENT
OUTSIDE
WALL
COMBUSTION AIR
BAYAIR30AVENTA
TEE
2", 2-1/2"
or 3" PIPING
BAYVENT200B
VENT
3.2"
COMBUSTION
AIR
Figure 16
STRAP
(FIELD SUPPLIED)
ELBOW
(FIELD
SUPPLIED)
REDUCING
COUPLING,
FIELD SUPPLIED
IF NEEDED
3" PIPING
SEAL ALL
WALL CAVITIES
ANCHORS
(4 req.)
VENT
PLATE
12" MINIMUM
TO OVERHANG
VENT
VENT
CAP
MAINTAIN 12" (18" FOR CANADA) MINIMUM
CLEARANCE ABOVE HIGHEST ANTICIPATED
SNOW LEVEL OR GRADE WHICHEVER IS GREATER
BAYVENT200B
COMBUSTION
AIR
RAIN CAP
VENT
1" + 1/2"
SCREWS
(4 req.)
17
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