29
Polypropylene vent systems do not use cement to connect the
pipe and elbow sections. They use a push-together gasket-seal
method. Do not attempt to connect Polypropylene with sealant
cement. All vent connections MUST be secured by the vent
manufacturer's joint connector. The installer must use a specific
vent starter adapter at the flue connection. The adapter is supplied
by the vent manufacturer to adapt to its vent system.
In order to be in full compliance with
UL 1738
or
ULC-S636
and to
meet the requirements of the water heater manufacturer, you
must use the metal joint connector rings, available from the
Polypropylene vent manufacturer, to stiffen the joints of two-inch,
three-inch, and four-inch diameter pipes.
AL29-4C
®
VENT INSTALLATIONS
(AL29-4C
®
is a registered trademark of Allegheny Technologies, Inc.)
The water heaters covered by this manual are approved to be
installed with AL29-4C
®
stainless steel vent material using parts
from the manufacturers listed in
below. These
listed systems must be installed using the vent manufacturer’s
instructions including their listed clearances to combustible and
noncombustible materials. Refer to
for the
maximum and minimum equivalent linear vent lengths and number
of elbows that may be used. However, use
below to find the appropriate equivalent linear vent lengths for
the AL29-4C
®
elbows.
Note:
The equivalent lengths of the AL29-4C
®
elbows
are different than those from smooth walled plastic
equivalent linear vent lengths.
Listed vent systems composed of AL29-4C
®
must not mix
parts from the different manufacturers. The joints of these
products are sealed by internal gaskets. Do not use any
other type of sealant. When assembling these vent systems,
follow the vent manufacturer’s instructions for cleaning and
lubricating the joints, if required. Each section must be locked
together using the method supplied by the vent manufacturer.
The water heaters covered by this manual are approved to
be installed using the approved vent terminations shown
in this manual. This means that, the installer must use the
adapter listed in Tables 9 and 10 and a short piece of PVC
pipe to complete the end of the vent system with an approved
termination. In Canada, the PVC pipe length must be listed
to ULC636.
Table 10. HeatFab Saf-T Vent AL29-4C
®
Vent System Parts
Diameter
Flue Outlet
Adapter
*Straight
Pipe (3’
Section)
45°
Elbow
Equivalent
Linear Length,
45° Elbow
90°
Elbow
Equivalent
Linear length,
90° Elbow
Adapter to
PVC
3 inches 9301 PVC
9307
9311
5 feet
9314
10 feet
9353CPVC
4 inches 9401 PVC
9407
9411
5 feet
9414
10 feet
9454CPVC
*Consult vent manufacturer’s catalog for other available lengths.
Table 11. Duravent FasNSeal AL29-4C
®
Vent System Parts
Diameter
Flue Outlet
Adapter
*Straight
Pipe (3’
Section)
45° Elbow
Equivalent
Linear Length,
45” Elbow
90° Elbow
Equivalent
Linear Length,
90° Elbow
Adapter to
PVC
3”
810005378 FSVL3603 FSELB4503
5 feet
FSELB9003
10 feet
810009530
4”
810005545
FSVL3604
FSELB4504
5 feet
FSELB9004
10 feet
810009529
*Consult vent manufacturer’s catalog for other available lengths.
COMMON DIRECT VENTING REQUIREMENTS
The water heaters covered by this manual may be installed using
a common direct vent kit. Contact your local distributor or call the
parts department phone number listed on the back cover of this
manual for more information or to order.
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