Install Instructions

42 103448-08- 9/16
IV. Venting C. Polypropylene Venting (continued)
4. System Assembly
WARNING
Asphyxiation Hazard. Vent systems made by
listed PP vent system manufacturers rely on
gaskets for proper sealing. When these vent
systems are used, take the following precautions:
• Make sure that gasket is in position and un-
damaged in the female end of the pipe.
• Make sure that both the male and female
pipes are free of damage prior to assembly.
• Only cut vent pipe as permitted by the
vent manufacturer in accordance with their
instructions. When pipe is cut, cut end
must be square and carefully de-burred prior
to assembly.
• Use locking band clamps at all vent pipe
joints.
a. Plan venting system to avoid possible contact
with plumbing or electrical wires. Start at
vent connector at boiler and work towards vent
termination.
b. Follow all manufacturer instructions and
warnings when preparing pipe ends for joining
and when assembling the vent/combustion air
system.
c. Use locking band clamps at all vent pipe joints.
NOTICE
The venting system must be free to expand
and contract and supported in accordance with
installation instructions included by the listed
polypropylene venting component manufacturers,
whichever applicable. Polypropylene pipe
sections must be disengaged 1/4 to 5/8 in.
(6 mm to 16 mm) per joint to allow for thermal
expansion.
5. Running Flexible Polypropylene Vent(Liner)
Through Unused Masonry Chimney Chase
or B-Vent Chase
WARNING
Asphyxiation Hazard. Flexible polypropylene
vent must be installed only in an UNUSED
chimney. A chimney, either single or multiple
ue type, is considered UNUSED when none of
the ues is being used for any appliance venting.
Where one of the multiple ues is being used for
an appliance venting, the exible vent installation
is not permitted through any of adjacent ues.
NOTICE
Pressure drop for exible polypropylene liner
is 20% greater than from rigid pipe. Multiply
measured exible polypropylene liner length by
1.2 to obtain equivalent length.
Maximum equivalent length of exible
polypropylene liner is 48 ft. (14.6 m).
a. Models ALP080B through ALP285B are listed
for vertical venting by installing exible vent in
an UNUSED masonry chimney/chase or B-Vent
chase and supplying combustion air through
a separate sidewall or roof combustion air
terminal.
b. Refer to Figures 16A or 16B for details of
masonry chimney chase or B-Vent chase
installation.
c. Flexible polypropylene pipe must be treated
carefully and stored at temperatures higher than
41°F (5°C).
d. Do not bend or attempt to install exible pipe if
it has been stored at lower ambient temperature
without allowing the pipe to warm up to a higher
temperature rst.
WARNING
Asphyxiation Hazard. Bending or attempting
to install exible pipe if it has been stored at
ambient temperature below 41°F (5°C) will
cause material to become brittle and lead to
cracks, resulting in ue gas leaks.
Do not install exible polypropylene pipe
at an angle greater than 45 degrees from
vertical plane when used for combustion
product venting. Failure to do so will result
in improper condensate drainage towards
the boiler and possible subsequent vent
pipe blockage.
e. When exible polypropylene pipe (liner) is used
for combustion product venting, it must not be
installed at an angle greater than 45 degrees from
vertical plane. This will insure proper condensate
ow back towards the boiler.
f. When exible polypropylene pipe (liner) is used
for combustion air supply to a boiler, the pipe
(liner) can be installed in vertical or horizontal
position.
g. Follow exible polypropylene pipe (liner)
manufacturer specic installation instructions
regarding application/listing, permits, minimum
clearances to combustibles, installation details
(proper joint assembly, pipe support and routing,