30
AMPW 400-1000L I&O Manual
. Venting
(continued)
Figure 13: Flexible Vent in Masonry Chimney with Separate Combustion Air Intake
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 insulate polypropylene vent
pipes. Excessive heat could cause
premature vent pipe failure.
!
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).
