10: Twin Pipe To Concentric Termination Data - Rinnai RU80i Manual

Certified PVC/CPVC Vent Termination Options (continued)
IPEX Concentric Vent Kit Assembly (System 636):
1. Once the proper location has been determined, cut
a hole in the roof or wall large enough to
accommodate the outer pipe. The size of the hole
can vary greatly depending on the roof pitch.
2. As per the procedures outlined, solvent cement the
inner pipe to the concentric Wye fitting.
3. Solvent cement the outer pipe to the concentric
Wye fitting.
4. Slide the assembly through the roof or wall
penetration. (Install flashing as required)
5. To permanently affix the rain cap, it should be
solvent cemented to the inner pipe. For
installations where removal of the cap may be
required for service or cleaning the cap, it can be
fastened mechanically (see instructions). For either
installation method, the outer pipe is only a friction
fit with the cap.
Figure 10: Twin Pipe to Concentric Termination Physical Data
MECHANICALLY FASTENED RAIN CAP:
The Rain Cap must be installed with the supplied
Stainless Steel screw and lock nut, and in accordance
with the instructions and diagram below.
1. Locate the drill location dimple on the outside of
the rain cap.
2. At this location, drill through the cap and the inner
pipe wall. Ensure that the path of the hole is
perpendicular to the inner pipe NOT the outside of
the cap. For the 3" kit, drill a 3/16" hole, for the 4"
kit, drill a 1/4" hole. Clean any resulting debris.
3. Insert the screw and tighten, DO NOT OVER
TIGHTEN.
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