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
Exhaust Vent/Air Intake
Schedule 40 PVC
ANSI/ASTM D1785
ULC S636 Certified
Materials Only
PVC-DWV ANSI/ASTM
D2665
Schedule 40 CPVC
ANSI/ASTM F441
Pipe Cement/Primer
PVC ANSI/ASTM
D2564
CPVC ANSI/ASTM
F493
Note: Do Not Use Cellular Foam Core Pipe
PVC/CPV
PVC/CPVC Installation Instruction
allation Instructions
•
Use only solid PVC or CPVC schedule 40 pipe. Cellular foam core piping is not allowed.
•
•
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
manufacturer. 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 or CPVC 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.
3" or 4" schedule 80 pipe may also be used on this appliance, however the BTUH input of the
appliance will be reduced by up to 5%.
41' (12.6m)
35' (10.8m)
No. of Elbows
* Not including the termination
47' (14.4m)
3
4
2
1
53' (16.2m)
41' (12.6m)
35' (10.8m)
47' (14.4m)
53' (16.2m)
•
Do not exceed the following maximum vent lengths:
Venting With PVC or CPVC
Venting With PVC or CPVC
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.
•
•
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
(part #VT4-PVCS, use part #VT3-PVCS when using 3" (75mm) PVC or CPVC).
When attaching the piping to the water heater, use the appropriate primer and cement to ensure a
proper seal.
4" (100mm) Pipe*
3" (75mm) Pipe*
