68 Venting for Combustion Air
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Flexible Vent Systems (Polypropylene)
Note
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Only VERTICAL installations are
allowed. Horizontal terminations are
prohibited.
●
The use of proper adapters and
supports are required to fully
complete the installation.
The following table lists the flexible vent models
that are approved for use with this appliance in
addition to the maximum allowable vent lengths for
the desired vent system.
Model Type Vent
Dia.
Flexible PP
Centrotherm Innoflue Flex
NFB-
175H/200H
2 in
50 ft
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Only the flexible vent models listed above are
approved for use with this appliance.
●
All flexible vent pipe must be installed
VERTICALLY through the roof. No horizontal
terminations are permitted.
●
Use a 2 in snap fit coupler or the InnoFlue®
Single Wall Residential vent pipes to connect the
InnoFlue® Flex 2 in vent pipes to the exhaust.
●
After installation, ensure that the vent system is
tightly sealed at the joints.
●
All installation using the flexible vent materials
must be in INDIRECT VENTING only.
●
Refer to the manufacturer’s literature for detailed
information and guidelines.
Summary of Contents for NFB-175H
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