15
Certified PVC/CPVC Vent Termination Options
Vent Termination Configurations
There are three configurations for vent terminations
that can be used:
1. Concentric Termination (IPEX Concentric Vent Kit)
-Allows for only one penetration through a wall
or roof.
2. Snorkel Termination
-Allows for easier clearance above grade when
having to terminate through lower point
3. Side Wall Tee Termination
Termination Installation
Exhaust and combustion air piping must be
securely fastened to structure every 4 feet, to
ensure dimensions shown in Figures throughout
this document are maintained.
DO NOT
strap vertical vent too tightly as the
strapping must permit the vent to move in the
event of expansion and contraction.
Straps are field supplied. Use straps, clamps or
equivalent that will not score or damage the pipe.
Expansion and contraction should be addressed
between appliance and termination point.
All penetrations must be sealed according to local
building codes. Caulking for side wall terminations
and flashing for roof penetrations are typical. Use
only PVC/CPVC compatible sealing material,
contact PVC/CPVC manufacturer for a complete
list.
IPEX Concentric Vent Kit (CVK) Installation
For installations with multiple terminations,
maintain appropriate clearances between
terminals. (refer to figures 11a and11b).
The pipe length of the concentric vent kit can be
shortened; providing that the cutting and
cementing procedures adhere to the System 636
guidelines; reference Ipex installation instructions
and Figure 10 of this guide for further information.
Pipe lengths and/or fittings
CANNOT
be added to
the socket of the rain cap in order to divert the
exhaust gas.
Figure 8: Wall Termination
Figure 9: Roof Termination
WARNING
Moisture in the flue gas will condense as it leaves the
vent terminal. In cold weather this condensate can
freeze on the exterior wall, under the eaves, and on
surrounding objects. Some discoloration to the
exterior of the building is to be expected. However,
improper location or installation can result in severe
damage to the structure or exterior finish of the
building.
WARNING
Danger of fire or bodily injury – Solvent cements and
primers are highly flammable. Provide adequate
ventilation and do not assemble near heat source or
open flame. Do not smoke. Avoid skin or eye
contact. Observe all cautions and warnings on
material containers.
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