International comfort products C Series Installation Instructions Manual page 41

INSTALLATION INSTRUCTIONS
Figure 47 Vent Pipe Flush Showing Coupling
ALIGN NOTCHES IN VENT PIPE COUPLING OVER STAND--
OFF ON ADAPTER. TORQUE LOWER CL AMP 15 LB--IN. WHEN
REMAINING VENT PIPE IS INSTALLED, TORQUE UPPER
CL AMP TO 15 LB--IN.
Locating the Vent Termination
General
NOTE: Termination Requirements for the Provinces of
Alberta and Saskatchewan are located at the end of this
section.
Combustion--air inlet pipe (direct vent/2--pipe system only) and
vent pipe must terminate outside structure, either through
sidewall or roof.
For vent termination clearance, references to National codes
are shown in Figure 65 for Direct Vent/2--Pipe system and
Figure 66 for Ventilated
Vent/1--Pipe system. For exterior termination arrangements,
refer to Figure 65 for Direct Vent/2--Pipe system and Figure 66
for Ventilated Combustion Air/Non-- Direct/1--Pipe system.
Contact Local code authorities for other requirements to and/or
exemptions from the National codes shown in the figures.
Roof termination is the recommended termination location.
Roof terminations provide better performance against
sustained prevailing winds. The roof location is preferred since
the vent and combustion air system is less susceptible to
damage or contamination. The termination is usually located
away from adjacent structures or other
inside corners, windows, doors or other appliances. It is less
prone to icing conditions, and it often has less visible vent
vapors.
Sidewall terminations may require sealing or shielding of
building surfaces with a corrosive resistance material due to the
corrosive properties of combustion products from the vent
system, as well as protection of adjacent structures.
440 01 4104 07
A13076B
Combustion Air/Non--direct
obstacles such as
Specifications subject to change without notice.
NOTICE
RECOMMENDED SUPPORT
TERMINATIONS
It is recommended that side-wall vent terminations in
excess of 24 inches (0.6 M) or rooftop terminations in
excess of 36 inches (1.0 M) in vertical length be sup-
ported by EITHER the Direct Vent Termination Kit
shown in Table 12 or by field-supplied brackets or sup-
ports fastened to the structure.
NOTE: (Direct Vent/2--Pipe system ONLY) Terminate with the
standard termination as shown in Figure 65 or use a
factory--approved accessory termination kit.
When determining appropriate location for termination, consider
the following guidelines:
1. Comply with all clearance requirements stated in
Figure 65 or Figure 66 per application.
2. Termination or termination kit should be positioned where
vent vapors will not
conditioning equipment or utility meters.
3. Do not locate termination directly into prevailing winds.
Termination should be positioned so that it will not be
affected by sustained prevailing winds over 30 mph,
wind eddy, such as inside
recirculation of flue gases, airborne leaves, or light snow.
4. Termination or termination kit should be positioned where
it will not be damaged by or subjected to foreign objects
such as stones, balls, etc.
5. Termination or termination kit should be positioned where
vent vapors are not objectionable.
Inside Corner Terminations
Inside corner vent terminations are permitted provided that:
1. Only two exterior walls come together to form an angle of
90 degrees to 135 degrees. There are no other exterior
walls attached to either wall to form an alcove.
2. The clearance distances apply when the vent is at least
3 feet (1 meter) from, but not more than 6 feet (2 meters)
away from an inside corner.
3. For vent terminations located more than 6 feet (2 meters)
from an inside corner, refer to the appropriate Direct Vent
Clearance Table for all two pipe terminations or
Non--Direct Vent Clearance Table for all single pipe
terminations.
4. The clearance distances to items between the vent
termination and the outside corner, refer to the
appropriate Direct Vent Clearance Table for all two pipe
terminations or Non--Direct Vent Clearance Table for all
single pipe terminations.
Gas Furnace: N9MSB
FOR VENT
damage plants/shrubs, air
building corners, or by
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