Alpine Installation, Operating, and Service Instructions

103448-10 - 6/18 43
IV. Venting D. Stainless Steel Venting
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 combination of combustion
product venting and combustion air
supply).
h. When there is a conflict between flexible
polypropylene pipe (liner) manufacturer
installation instructions and these
instructions, the more restrictive instructions
shall govern.
D. Stainless Steel Venting
6. Running Flexible Polypropylene Vent
(Liner) Through Unused B-Vent Chase with
integrated Intake Air
a. Models ALP080B through ALP285B are
also listed for vertical venting by installing
flexible vent in an UNUSED B-Vent Chase
and supplying combustion air through
B-vent flexible termination cap (terminal).
b. Refer to Figures 16C and 16D for details
of B-Vent chase M&G/DuraVent or
Centrotherm flexible vent with integrated air
intake installation.
c. Refer to Z-Flex Z-Dens and Selkirk Polyflue
catalogs for component selection to
address flexible vent with integrated air
intake installation.
d. All B-Vent joints must be sealed with RTV
sealant (applicable to M&G/DuraVent).
e. Seal the flex male adapter to the inside of
lower B-Vent adapter with RTV (applicable
to M&G/DuraVent).
f. Seal the air intake pipe to the B-Vent cap
with RTV (applicable to M&G/DuraVent).
Asphyxiation Hazard. Follow these instructions and the installation instructions
included by the original stainless steel venting component manufacturers, Heat Fab, M&G/DuraVent or
Z-Flex, whichever applicable. Failure to do so could cause products of combustion to enter the building,
resulting in severe property damage, personal injury or death. Where a conflict arises between Heat
Fab, M&G/DuraVent or Z-Flex instructions and these instructions, the more restrictive instructions shall
govern.
• Do not mix vent components from listed manufacturers.
• Examine all components for possible shipping damage prior to installation.
• All condensate that forms in the vent must be able to drain back to the boiler.
WARNING
NOTICE Do not exceed maximum vent/combustion air system length. Refer to “2. Vent/Combustion Air
Piping” under “A. General Guidelines” in this section for maximum vent/combustion air system length.
Use only vent and combustion air terminals and terminal locations shown in “3. Vent/Combustion Air
Terminals” under “A. General Guidelines” of this section.