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240012994 Rev. B [08/31/2020]
5 - COMBUSTION AIR AND VENT PIPING
WARNING
Asphyxiation hazard! Improper installation could
result in death or serious injury. Read Twin Pipe
Installation Instructions completely and understand all
requirements before beginning installation.
!
Note
Venting manufacturer's use a device to secure
single wall twin pipe polypropylene vent pieces
to each other. Proper application of the securing
mechanism is necessary for any use of twin pipe
polypropylene venting on exhaust or air intake.
Securing mechanism is for indoor use only and
should not be used in outdoor applications.
Follow venting manufacturer’s instructions for
applying the securing mechanism on twin pipe
polypropylene venting.
Example for Natalini venting system. See Figure 5-11
(For other venting system suppliers see their instructions.)
1.
Place clamp so etched "UP" is facing up.
2.
Open clamp slightly by separating circular areas from each
other.
3.
Slide male end of rst pipe through open clamp so the
shoulder of the female end of the pipe stops the clamp from
sliding o the pipe.
4.
Insert the male end of the second pipe into the clamp on the
"up" etched side. Force the two pipes together.
5.
Verify the two pipes are secure together with clamp in place.
5.9 Securing Twin Pipe Polypropylene Venting
Figure 5-11 - Natalini Clamp
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