100324051_2000579115 _Rev. 01
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VENT PIPE MATERIAL
Vent Pipe
Material
Pipe and fitting
nomenclature
Applicable
Standard
PVC
DWV
ASTM D2665 or
CSA B181.2
PVC
Sch 40, 80, 120
ASTM D1785 or
CSA B137.3
PVC
SDR series
ASTM D2241 or
CSA B137.3
PVC
BH
ULC S636‡
UL 1738§
CPVC
CPVC 41
ASTM D2846 or
CSA B137.6
CPVC
Sch 40, 80
ASTM F441 or
CSA B137.6
CPVC
SDR series
ASTM-F442
CPVC
BH
ULC S636‡
UL 1738§
ABS
Sch 40 DWV
ASTM D2661§,
CSA B181.1§ or
ULC S636‡
Polypropylene n/a
ULC S636‡
UL 1738§
‡ Applicable to Canada only.
§ Applicable to the United States only.
Note: Use of cellular core PVC (ASTM F891), cellular
core CPVC, or Radel
®
(polyphenysulfone) in non-
metallic venting systems is prohibited.
The combustion air intake pipe material may be PVC,
CPVC, ABS or polypropylene.
This heater is certified to use Schedule 40 PVC or CPVC,
or polypropylene material for venting. Check local codes
to determine which materials are allowed in your area and
only use approved material. All venting components must
be joined with the approved primer/ cleaner and solvent
cement. Do not cement the venting system to the heater.
For polypropylene vent systems follow the manufacturer’s
instructions.
Note:
Polypropylene vent systems require separate
adaptor, termination, and elbows (field supplied). It is
recommended to use InnoFlue
®
SW Residential products
from Centrotherm (www.centrotherm.us.com).
Note:
Plastic pipe and fittings are available through most
plumbing suppliers. Always check the marking on the pipe
to make sure you are using the correct material.
Note:
Use of cellular core PVC (ASTM F891), cellular
core CPVC, or Radel
®
(polyphenolsulfone) in non-metallic
venting systems is prohibited.
POLYPROPYLENE VENT SYSTEMS
Polypropylene vent systems do not use cement to connect
the pipe and elbow sections but use a push together gasket
seal method. Do not attempt to connect polypropylene
with sealant cement.
•
Polypropylene vent systems are designed to use
specific adaptors to connect into the rubber coupling
on the top of the blower. These are available through
your venting supplier.
•
The PVC vent termination elbow supplied with this
heater has been certified to be used with polypropylene
vent systems. A polypropylene to PVC end connection
is required and is available through your venting
supplier.
•
Optional wall plates that fit the polypropylene venting
are also available through your supplier.
1. Carefully inspect the entire venting system for any
signs of cracks or fractures, particularly at joints
between elbows and other fittings and straight runs
of vent pipe.
2. Check system for signs of sagging or other stresses in
joints as a result of misalignment of any components
in the system. If any of these conditions are found,
they must be corrected in accordance with the
venting instructions elsewhere in this manual before
completing installation and putting the water heater
into service.
3. The vent piping shall be connected to the blower with
the rubber coupling and secured with gear clamps.
The coupling and clamps are provided with the heater.
4. Even though the flue gas temperature leaving the
blower is hot, some installations will have water
condense in the vent piping. If this occurs, then
adequate means of draining and disposing of the
condensate shall be made by the installer.
