International comfort products G9MVE A3 Series Installation Instructions Manual page 38

INSTALLATION INSTRUCTIONS
Vent Coupling and Adapter with
Figure 42
Gaskets
Attach gaskets to vent pipe and combustion air adapters
Vent Coupling and Adapter
Figure 43 Vent Pipe Flush with Adaptor
VENT PIPE ADAPTER WITH GASKET INSTALLED ON FURNACE.
VENT PIPE IS CUT FLUSH WITH TOP OF ADAPTER. PRIME AND
CEMENT VENT PIPE TO ADAPTER. ALLOW TO DRY BEFORE IN-
STALLING VENT COUPLING.
Figure 44 Vent Pipe Flush Showing Coupling
ALIGN NOTCHES IN VENT PIPE COUPLING OVER STAND−
OFF ON ADAPTER. TORQUE LOWER CLAMP 15 LB−IN. WHEN
REMAINING VENT PIPE IS INSTALLED, TORQUE UPPER
CL AMP TO 15 LB−IN.
38
Locating the Vent Termination
General
NOTE:
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 62 for Direct Vent/2−Pipe system and
Figure 63
Vent/1−Pipe system. For exterior termination arrangements,
refer to Figure 62 for Direct Vent/2−Pipe system and Figure 63
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
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
A13074
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.
RECOMMENDED SUPPORT FOR VENT 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 supported by EITHER the
Direct Vent Termination Kit shown in Table 12 or by
field-supplied brackets or supports fastened to the structure.
NOTE: (Direct Vent/2−Pipe system ONLY) Terminate with the
standard termination as shown in Figure 62 or use a
factory−approved accessory termination kit.
A13076A
When determining appropriate location for termination, consider
the following guidelines:
1. Comply with all clearance requirements stated in
Figure 62 or Figure 63 per application.
2. Termination or termination kit should be positioned where
vent
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
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
Corner terminations for Direct Vent (2−pipe) terminations are
permitted provided that:
1. The Direct Vent termination is located on the longer of
A13076B
the two walls.
2. The Direct Vent termination is located at a distance
farther away from the inside corner than the length of the
adjacent wall
Specifications subject to change without notice.
Gas Furnace: (F/G)9MVE
Termination Requirements for the Provinces of
for Ventilated Combustion
terminations provide better performance against
NOTICE
vapors will not damage
sustained prevailing winds over 30 mph,
Air/Non−direct
obstacles such as
plants/shrubs, air
building corners, or by
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