Crown Boiler Phantom X series, Installation And Operating Instructions Manual, Page: 30 / 136

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IV. Venting
C. Polypropylene Venting (continued)
NOTICE
Pressure drop for flexible polypropylene liner
is 20% greater than from rigid pipe. Multiply
measured flexible polypropylene liner length by
1.2 to obtain equivalent length.
Maximum equivalent length of flexible
polypropylene liner is 48 ft. (14.6 m).
a. Models PHNTM399C and PHNTM500C are
listed for vertical venting by installing flexible
vent in an UNUSED masonry chimney/chase
and supplying combustion air through a separate
wall or roof combustion air terminal.
b. Refer to Figure 21 for details of chimney 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 flexible pipe if
it has been stored at lower ambient temperature
without allowing the pipe to warm up to a higher
temperature first.
WARNING
Asphyxiation Hazard. Bending or attempting
to install flexible 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 flue gas leaks.
Do not install flexible 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 flexible 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
flow back towards the boiler.
f. When flexible 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 flexible polypropylene pipe (liner)
manufacturer specific installation instructions
regarding application/listing, permits, minimum
clearances to combustibles, installation details
(proper joint assembly, pipe support and routing,
gasket and fitting installation, optional tooling
availability/usage, routing through masonry
chimney for combustion product venting or,
combination of combustion product venting and
combustion air supply).
h. When there is a conflict between flexible
polypropylene pipe (liner) manufacturer
installation instructions and Phantom X boiler
Installation, Operating and Service Instructions,
the more restrictive instructions shall govern.
Figure 17: Field Installation of
Polypropylene Vent Adapter
Figure 18: Field Installation of Polypropylene
Combustion Air Adapter