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24
B. Approved Materials for Exhaust Vent and Intake Pipe
Item
Pipe and Fittings Approved for Intake ONLY
Pipe Approved for
Intake OR Exhaust Vent
Pipe Fittings
Pipe Cement
Pipe Primer
•
The exhaust and intake components installed with this appliance must be used for near appliance piping BEFORE transitioning to
the approved materials listed above. DO NOT REMOVE these installed components. Doing so WILL VOID appliance warranty.
•
PVC / CPVC pipe and fittings of the same diameter are considered interchangeable.
•
The use of cellular core PVC (ASTM F891), cellular core CPVC, or Radel
prohibited.
•
Covering non-metallic vent pipe and fittings with thermal insulation is prohibited.
•
DO NOT connect PVC/CPVC to Polypropylene without an approved vent connector.
•
Any transition to Polypropylene MUST be done in the vertical within five (5) feet of the appliance.
•
When installing AL29-4C vent piping, install a PVC-to-stainless adapter at the appliance vent connection, and at the termination
when using a PVC termination kit. DO NOT mix AL29-4C piping from different manufacturers unless using adapters specifically
designed for the purpose by the manufacturer.
•
A double wall vent or insulated material may be used when using stainless steel vent material in a freezing climate.
•
*ABS may be used for air intake applications ONLY. ABS is NOT PERMITTED for use in Canada.
•
Contact the venting material manufacturer if there is any question about the applicability of the proposed venting material.
Failure to follow these directions will result in substantial property damage, severe personal injury, or death.
Table 8 - Approved Materials for Exhaust Vent and Intake Pipe
DO NOT mix components from different venting systems without
proper adapters. The vent system could fail, causing leakage of
flue products into the living space. Use only the approved pipe and
fitting materials, and primer and cement specifically designed for
the material used, as listed in the above table. Failure to do so could
result in property damage, serious injury, or death.
High heat sources (generating heat 100
as boiler flue pipes, space heaters, etc.) may damage plastic
components of the boiler as well as plastic vent pipe materials. Such
damages ARE NOT covered by warranty. It is recommended to keep
a minimum clearance of 8" from high heat sources. Observe heat
source manufacturer instructions, as well as local, state, provincial,
and national codes, laws, regulations, and ordinances when installing
this boiler and related components near high heat sources.
whl-428-r1 Rev. 001 Rel. 012 Date 7.21.20
Material
ABS*
PVC Schedule 40/80
PVC-DWV Schedule 40/80
CPVC Schedule 40/80
Polypropylene
Stainless Steel AL29-4C
PVC Schedule 40
PVC Schedule 80
CPVC Schedule 40
CPVC Schedule 80
ABS*
PVC
CPVC
PVC / CPVC
o
o
F / 37
C or greater, such
Standards for Installation In:
United States
ANSI/ASTM D2661
UL-1738 or ANSI/ASTM D1785
UL-1738 or ANSI/ASTM D2665
UL-1738 or ANSI/ASTM F441
UL-1738 or ULC-S636
Certified for Category IV and Direct Vent Appliance Venting
UL-1738, ANSI/ASTM D2466
or D2665
UL-1738, ANSI/ASTM D2467
or D2665
UL-1738 or ANSI/ASTM F438
UL-1738 or ANSI/ASTM F439
ANSI/ASTM D2235
ANSI/ASTM D2564
ANSI/ASTM F493
ASTM F656
®
(polyphenolsulfone) in non-metallic venting systems is
NOTE: The use of double-wall vent or insulated material for the
combustion air intake pipe is recommended in cold climates to
prevent the condensation of airborne moisture in the incoming
combustion air.
You must not use "B" vent in an exhaust application. "B" vent is for
intake applications ONLY. Using "B" vent in an exhaust application
will result in serious injury or death.
C. Additional Requirements for Installation in Canada
1. Installations must be made with a vent pipe system certified
to ULC-S636. IPEX is an approved vent manufacturer in Canada
supplying vent material listed to ULC-S636. Additionally, you may
use AL29-4C stainless steel venting to comply with Canadian
requirements.
2. The first three (3) feet of vent pipe from the boiler flue outlet must
be readily accessible for visual inspection. 3. The components of
the certified vent system must not be interchanged with other vent
systems or unlisted pipe / fittings.
Canada
ANSI/ASTM D2661
UL-1738 or ULC-S636
UL-1738 or ULC-S636
ANSI/ASTM D2235
IPEX System 636 Cements and
Primers
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