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B. Approved Materials for Exhaust Vent and Intake Pipe
Item
Exhaust Vent or Intake
Pipe and Fittings
Pipe Cement / Primer
•
The exhaust and intake components installed with this boiler must be used for near boiler piping BEFORE transitioning to
the approved materials listed above. DO NOT REMOVE these installed components. Doing so WILL VOID boiler warranty.
•
PVC / CPVC pipe and fittings of the same diameter are considered interchangeable.
•
DO NOT use Foam Core Pipe in any portion of the exhaust piping from this boiler.
•
DO NOT connect PVC / CPVC to PP without an approved vent connector.
•
When installing AL29-4C vent piping, install a PVC-to-stainless adapter at the boiler 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 may be used when using stainless steel vent material in a freezing climate.
•
*PVC-DWV may be used for air intake applications ONLY.
•
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
such 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.
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.
WHL-016 Rev. 4.14.16
Material
PVC Schedule 40/80
PVC-DWV*
CPVC Schedule 40/80
Polypropylene
Stainless Steel AL29-4C
PVC
CPVC
F / 37
C or greater,
o
o
Standards for Installation In:
United States
ANSI / ASTM D1785
ANSI / ASTM D2665
ANSI / ASTM F441
UL-1738 or ULC-S636
Certified for Category IV and Direct Vent Appliance Venting
ANSI / ASTM D2564
ANSI / ASTM F493
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.
Cellular foam core piping may be used on air inlet piping only.
Canada
PVC, CPVC, and PP Venting Must
be ULC-S636 Certified. IPEX is
an approved manufacturer in
Canada.
IPEX System 636 Cements and
Primers
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