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VII. Venting (continued)
NOTICE
NOTICE
Pressure drop for flexible polypropylene line is 20
% greater than from rigid pipe. Multiply measured
flexible polypropylene liner length by 1.2 to obtain
equivalent length.
Maximum equivalent vent length of flexible poly-
propylene liner is 48 ft. (14.6 m).
Installation of a polypropylene vent system should
adhere to the vent manufacturer's installation in-
structions supplied with the vent system.
WARNING
WARNING
DO NOT mix vent systems of differ-
ent types or manufacturers. Failure
to comply could result in severe per-
sonal injury, death, or substantial
property damage.
DO NOT connect venting to a chim-
ney flue that is servicing a separate
appliance designed to burn solid
fuel.
DO NOT use chimney for Combus-
tion air intake.
DO NOT insulate polypropylene
vent pipes. Excessive heat could
cause premature vent pipe failure.
Figure 13: Flexible Vent in Masonry Chimney with Separate Combustion Air Intake
30
AMP 400-1000L I&O Manual
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