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TWIN PIPE VENTING GUIDE
Figure 22: Approved PVC/CPVC Vent Configurations
Three (3) inch
(7.6 cm) or
four (4) inch
(10.2 cm) PVC/
CPVC Concen-
tric Side Wall
Termination
Configuration
Three (3) inch
(7.6 cm) or
four (4) inch
(10.2 cm) PVC/
CPVC Snorkel
Termination
Configuration
Three (3) inch
(7.6 cm) or
four (4) inch
(10.2 cm)
PVC/CPVC Tee
Side Wall
Termination
Configuration
Three (3) inch
(7.6 cm) or
four (4) inch
(10.2 cm)
PVC/ CPVC
Low Profile
Termination
Configuration
Three (3) inch
(7.6 cm) or
four (4) inch
(10.2 cm)
PVC/CPVC
Concentric
Vertical
Termination
Configuration
Three (3) inch
(7.6 cm) or
four (4) inch
(10.2 cm) PVC/
CPVC Standard
upside down
"U" Vertical
Termination
Configuration
Three (3) inch
(7.6 cm) or
four (4) inch
(10.2 cm)
PVC/CPVC Tee
Vertical
Termination
Configuration
Venting Installation Sequence
1) Install the water heater.
2) Determine the termination method—sidewall or vertical, con-
centric or separate pipes, etc.
3) Determine proper location for wall or roof penetration for each
termination.
4) Install termination assembly as described in this manual.
5) Install air and vent piping from water heater to termination.
6) Slope horizontal exhaust run towards the water heater 1/4
per foot. DO NOT slope combustion air pipe towards unit. Be
sure to dispose of condensate per local codes.
7) Install pipe supports and brackets every four (4) feet (1.2 m)
allowing for movement from expansion or as per local code
requirements.
Three (3) inch (7.6 cm) and four (4) inch (10.2 cm) Low Pro-
file Vent Termination Kits
The following information should be used in conjunction with the
IPEX System 636 Installation Guide:
• Termination kits are to be tested and certified for use with the
brand of pipe-fitting-cement system that is to be utilized in the
application. The IPEX Low Profile termination is fully certified for
use with IPEX product only.
• System 636 PVC Low Profile Vent kits are rated to 65
maximum and are made from certified compound.
• All termination kits must be located and installed in accordance
with these instructions, local building code, and CSA B149.1
Natural Gas and Propane Installation Code.
23
C (149
F)
o
o
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