14
WARNING
CARBON MONOXIDE POISONING
Failure to properly seal the vent system could
cause flue products to enter the living space.
Item Material United States Canada
Approved Vent Manufacture
Centrotherm - lnnoFlue
®
PP
Single Wall Pipe (4”) : ISVL04xx(UV), ISEP04xx
Elbow : ISELL0487(UV), ISEL0445
Termination** : ISELL0487UV, ISTT0420
Bird Screen : IASPP04
4" PP Adapter*** : ISAAN0404
Parts#
Vent Material
4"(100mm) PVC or CPVC
Centrotherm - 4"(100mm) PP
Bird Screen Parts #
VT4-PVCS
IASPP04
Exhaust Vent/Air Intake
Schedule 40/80 PVC ANSI/ASTM D1785
PVC-DW
Polypropylene*
V ANSI/ASTM D2665
Schedule 40/80 CPVC ANSI/ASTM F441
Pipe Cement/Primer
PVC ANSI/ASTM D2564
CPVC ANSI/ASTM F493
I
n
s
t
allation Instruction
s
• Use only solid PVC / CPVC (schedule 40/80) or PP pipe. Cellular foam core piping is not allowed.
• Covering non-metallic vent pipe and fittings with thermal insulation is prohibited.
•
•
In Canada, plastic vent systems must be certified to ULC S636. The components of the certified
vent system must not be interchanged with other vent systems or unlisted pipe/fittings.
• In Canada, specified primers and glues of the ULC S636 certified vent system must be from a
single system manufacturer and not intermixed with other system manufacturer’s vent system parts.
• Follow all general venting guidelines as outlined on this page.
• The pipe shall be installed so that the first 3’ (0.9m) of pipe from the appliance flue outlet is readily
accessible for visual inspection.
• When preparing and assembling the pipe, follow instructions as provided by the pipe
In general, the following practices must be observed:
o Squarely cut all pieces of pipe.
o Remove all burs and debris from joints and fittings.
o All joints must be properly cleaned, primed, and cemented. Use only cement and primer
approved for use with the pipe material as outlined in the above table.
•
•
PVC, CPVC or PP pipe has been approved for use on this appliance with zero clearance to combustibles.
All piping must be fully supported. Use pipe hangers at a minimum of 3’ (0.9m) intervals. Do not use
the water heater to support the vent piping.
4" schedule 80 pipe may also be used on this appliance, however because the inside diameter is
smaller than schedule 40, the maximum vent length must be shortened.
Venting With PVC, CPVC or PP
Venting With PVC, CPVC or PP
This appliance can be vented with non cellular core plastic pipe materials as specified in the below table.
Vent installations in Canada which utilize plastic vent systems must comply with ULC S636.
* Polypropylene : Only listed manufacture specified vent parts may be used for this appliance.
Refer to the manufacture's literature for detailed information.
** Applicable vent termination are "90 degree elbow" or "Tee type".
Concentric vent termination of polypropylene are prohibited.
*** When attaching polypropylene vent materials to the water heater,
a special adapter must be used.
•
•A
bird screen must be installed on the vent terminations to prevent debris or animals from entering the
piping. These screens are not supplied with the water heater and must be purchased separately,
When attaching the piping to the water heater, use the appropriate primer and cement to ensure a proper seal.
U
CSA B137.3
CSA B181.2
CSA B137.3
Centrotherm-lnnoFule
®
(certified ULC 636S)
LC S636 Certified
Materials Only
Note: Use of cellular core PVC (ASTM F891), cellular core CPVC, or
Radel (polyphenylsulfone) in non-metallic venting system is prohibited.
R
manufacturer.
4" PP Adapter
ISAAN0404
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