International comfort products N9MSB Installation Instructions Manual page 40

INSTALLATION INSTRUCTIONS
permitted) that re-directs the flue gas away by use of an elbow
or tee, certified to ULC S636 from the adjacent property line
must be used. (See Figure 44 and Figure 46)
The concentric vent kit currently cannot be modified to attach
an elbow to the vent portion of the rain cap. A tee attached to
the rain cap could potentially direct the flue gas plume toward
the intake air stream and contaminate the incoming combustion
air for the furnace.
Refer to Figure 44 and Figure 46 for terminations approved for
use in Alberta and Saskatchewan.
Figure 44 Tee at Termination Outlet
Figure 46 Vent Terminations
OVERHANG OR ROOF
VENT
Angle o
22.5
to
o off wall
45
OPTIONAL
BRACKET
COUPLING
COMBUSTION AIR
(ELBOW PARALLEL
TO WALL)
40
OPTIONAL TERMINATION
BRACKET FOR 2 PIPE
TERMINATIONS
L12F030
12 IN. SEPARATION
BETWEEN BOTTOM OF
COMBUSTION AIR AND
BOTTOM OF VENT
MAINTAIN 12 IN.
CLEARANCE
ABOVE HIGHEST
ANTICIPATED SNOW
LEVEL OR GRADE,
WHICHEVER IS
GREATER.
Specifications subject to change without notice.
Gas Furnace: N9MSB, N9MSE
Sample Inlet Air Pipe Connection
Figure 45
for Polypropylene Venting Systems
EXAMPLE FOR
UPFLOW INSTALLATIONS.
MAY BE APPLIED TO
OTHER CONFIGURATIONS.
A12220
L12F031
440 01 4101 03