The SST vent/air connections fit Sched. 40 PVC/CPVC pipe. PP pipe cannot be used with
the SST. The pipes must extend completely through the wall as shown below. The SST is
an external fixture, and is not part of the sealed vent system that runs inside the building.
Figure 19 Pipes extend completely through the wall (Vertical orientation shown)
Ensure that the vent termination location does not exceed the allowed maximum
equivalent vent length, including the allowance for the SST.
Install multiple vent SST installations level with one another and maintain at least the
minimum separation distances shown below. The terminals shall not be stacked vertically.
Figure 20 : Minimum separation for multiple
vent installation - vertical orientation
Figure 21 : Minimum separations for multiple vent
installation - horizontal orientation
Approved PVC Side Wall Termination kits are listed below:
Ipex # 196985 3"
Figure 22 Approved PVC Side Wall Termination configuration
Warning
In areas of high snowfall, users must be advised to check side wall vent and air intake
terminations on a regular basis to ensure blockage does not occur.
3.7.6 Sidewall vent termination
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