Installation Guide
14
Refer to Location Requirements and Considerations
for combustion air contaminant restrictions.
The following bullets and diagram describe the restrictions
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Non-Direct Vent (Single Pipe) Piping and Direct Vent (Dual
Pipe) Piping
termination construction.
located at least 12 inches above ground level or
the anticipated snow level.
terminate at least 3 feet above any forced air inlet
located within 10 feet.
This provision does not apply to the
combustion air intake termination of a direct vent
application.
• The vent termination of a non-direct vent application
must terminate at least 4 feet below, 4 feet
horizontally from, or 1 foot above any door,
window, or gravity air inlet into any building.
• The vent termination of a direct vent application
must terminate at least 12 inches from any opening
• The vent termination of vent pipe run vertically
through a roof must terminate at least 12 inches
and be at least 12 inches from any vertical wall
• A vent termination shall not terminate over public
walkways
or over an area where condensate or vapor could
create a nuisance or hazard or could be detrimental
to the operation of regulators, relief valves, or
other equipment.
• The combustion air intake termination of a direct
vent application should not terminate in an area
which is frequently dusty or dirty.
In Canada, the current edition of CAN/CSA B149.1-
15 takes precendence over the preceding termination
restriction.
All installations in Canada must conform to the require-
ments of CAN/CSA B149.1 -15 code. All vent components,
including primer and cement, must be listed to ULC S636.
the ULC standard “S636”. The primer and cement used must
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tion air pipe only. ABS is not an approved vent material in
Canada. If ABS is used as a combustion air pipe, it must be
primer or cement beyond its expiration date.
system is based on following these installation instructions,
the vent system manufacturer’s installation instructions,
and proper use of primer and cement. It is recommended
under this standard, that the vent system be checked
Acceptability under CAN/CSA B149.1-15 is dependent upon
full compliance with all installation instructions. Consult
-
fore installation to determine the need to obtain a permit.
*IPEX System 636™ is a trademark of IPEX Inc.
Carefully follow the pipe manufacturers’ instructions for cutting,
The vent can be run through an existing unused chimney provid-
ed the space between the vent pipe and the chimney is insulated
It is the responsibility of the installer to ensure that the piping
connections to the furnace are secure, airtight, and adequately
supported.
The vent pipe outlet is sized to accept 2” pipe. Secure vent/
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priate glue. Alternately, a small section of 2” pipe may be
glued in the furnace socket and a rubber coupling installed
to allow removal for future service. Combustion Air and
with refrigerant lines, metering devices, condensate drain
lines, etc. If necessary, clearances may be increased by
45 DEGREE
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