Technical Specifications

whl-648 Rev. 000 Rel. 003 Date 3.6.18
30
B. Approved Materials for Exhaust Vent and Intake Pipe
Table 13 - Approved Materials for Exhaust Vent and Intake Pipe
DO NOT mix components from dierent venting systems. The vent
system could fail, causing leakage of ue products into the living
space. Use only the approved pipe and tting materials, and primer
and cement specically 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
o
F / 37
o
C or greater, such
as appliance ue pipes, space heaters, etc.) may damage plastic
components of the appliance 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 appliance 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.
C. Additional Requirements for Installation in Canada
1. Installations must be made with a vent pipe system certied
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 rst three (3) feet of vent pipe from the appliance ue outlet
must be readily accessible for visual inspection. 3. The components
of the certied vent system must not be interchanged with other
vent systems or unlisted pipe / ttings.
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.
It is required to insert the provided exhaust and intake screens
into the vent terminations to prevent blockage caused by debris
or birds. Failure to keep terminations clear could result in property
damage, severe personal injury, or death.
t 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.
t PVC / CPVC pipe and ttings of the same diameter are considered interchangeable.
t DO NOT use Foam Core Pipe in any portion of the exhaust piping from this boiler.
t DO NOT connect PVC/CPVC to Polypropylene without an approved vent connector.
t Any transition to Polypropylene MUST be done in the vertical within ve (5) feet of the appliance.
t 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 dierent manufacturers unless using adapters specically designed
for the purpose by the manufacturer.
t A double wall vent may be used when using stainless steel vent material in a freezing climate.
t *ABS may be used for air intake applications ONLY. ABS is NOT PERMITTED for use in Canada.
t 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.
Item Material
Standards for Installation In:
United States Canada
Pipe and Fittings Approved
for Intake ONLY
ABS* ANSI/ASTM D2661 NOT PERMITTED
Pipe Approved for
Intake OR Exhaust Vent
PVC Schedule 40/80 ANSI/ASTM D1785
PVC, CPVC, and PP Venting Must
be ULC-S636 Certied. IPEX is an
approved manufacturer in Canada.
PVC-DWV Schedule 40/80 ANSI/ASTM D2665
CPVC Schedule 40/80 ANSI/ASTM F441
Polypropylene UL-1738 or ULC-S636
Stainless Steel AL29-4C Certied for Category IV and Direct Vent Appliance Venting
Pipe Fittings
PVC Schedule 40 ANSI/ASTM D2466 or D2665
PVC, CPVC, and PP Venting Must
be ULC-S636 Certied. IPEX is an
approved manufacturer in Canada.
PVC Schedule 80 ANSI/ASTM D2467 or D2665
CPVC Schedule 40 ANSI/ASTM F438
CPVC Schedule 80 ANSI/ASTM F439
Pipe Cement
ABS* ANSI/ASTM D2235 NOT PERMITTED
PVC ANSI/ASTM D2564
IPEX System 636 Cements and
Primers
CPVC ANSI/ASTM F493
Pipe Primer PVC / CPVC ASTM F656