Installation Guide
Part number 550-100-066/0608
31
g a s -f i r e d w at e r b o i l e r — Boiler Manual
Venting/air piping — general
.
. common vent with
any other appliance. See page 29.
Inspect finished vent and air piping
thoroughly to ensure all are airtight
and comply with the instructions
provided and with all requirements
of applicable codes.
Failure to provide a properly-in-
stalled vent and air system will cause
severe personal injury or death.
Installations must comply with local
requirements and with the National
Fuel Gas Code, ANSI Z223.1 for
U.S. installations or CSA B149.1 or
B149.2 for Canadian installations.
Use only the materials listed in this
manual for vent and air pipe and fit-
tings. Failure to comply could result
in severe personal injury, death or
substantial property damage.
— The vent
and air piping must be installed as
instructed in this manual and all
joints must be sealed. The chimney
must be used only for Ultra boilers.
NO OTHER appliance or fireplace
can be connected to the chimney.
The chimney must be straight, with
no offsets, and the vent and air pip-
ing materials must comply with this
instruction manual.
The chimney must be fitted with
a sealed access opening, through
which the interior of the chimney
can be inspected.
The chimney and liner must be
inspected at least once annually to
verify condition.
Failure to comply could result in
severe personal injury, death or
substantial property damage.
Combustion air piping
Combustion air must be piped from outside to the boiler, following the 1.
instructions in this manual, and compliant with all applicable codes.
Read the warning in Figure 30, page 30, and ensure the air intake will
not be likely to draw in contaminated air.
Combustion air can be piped individually for each boiler, or it can be 2.
manifolded as shown in Figure 31, page 30. Air piping must always
terminate on the same side (or roof ) of the building as the vent.
Vent piping
Boiler ue gases must be piped from the boiler to outside, following the 1.
instructions in this manual, and compliant with all applicable codes.
The vent pipe must terminate either through the sidewall or through
the roof, located with the correct separation from the air termination.
See Figure 34, page 32, and the associated instructions referenced.
Each Ultra boiler requires a separate vent. Do not common vent.2.
Vent and air piping materials
See 1. Figure 32 for approved vent and air piping materials.
Use only the materials listed below, ensuring that all
materials meet local codes
&
PVC schedule 40 ANSI/ASTM D1785
Plastic vent pipe must
be certified to UL S636
when required.
Air pipe can be any
of those listed at left
if acceptable for local
codes.
PVC-DWV ANSI/ASTM D2665
CPVC schedule 40 ANSI/ASTM F441
ABS-DWV schedule 40 ANSI/ASTM D2661
PVC ANSI/ASTM D2564
CPVC ANSI/ASTM F493
ABS ANSI/ASTM D2235
Heat Fab, Inc.
Saf-T-Vent
®
Z-Flex, Inc.
Z-Vent II
Protech Systems
FasNSeal™
Certified for Category
IV and direct vent
appliance venting
Certified for Category
IV and direct vent
appliance venting
AL29-4C vent piping — Install a PVC-to-stainless adapter
supplied by the vent pipe manufacturer at the boiler vent
connection and at the termination (when using Weil-
McLain plate or concentric PVC termination). DO NOT
mix piping from different vent pipe manufacturers unless
using adapters specifically designed for the purpose by the
manufacturer.
Plastic piping — Do not attempt to connect different types
of plastic piping together.
Do not use cellular core pipe.