Installation Manual

28
WHL-019 REV. 12.17.14
B. APPROVED MATERIALS FOR EXHAUST VENT AND INTAKE PIPE
APPROVED EXHAUST VENT AND INTAKE PIPE MATERIAL
Item
Material
Standards for Installation in:
United States
Canada
Exhaust vent or Intake
pipe and fittings
PVC schedule 40/80
ANSI/ASTM D1785
PP, CPVC, and PVC venting must be ULC-
S636 Certified. IPEX is an approved
manufacturer in Canada, supplying vent
material listed to ULC-S636.
PVC-DWV*
ANSI/ASTM D2665
CPVC schedule 40/80
ANSI/ASTM F441
Polypropylene
ULCS636
Stainless Steel AL29-4C
Certified for Category IV and
direct vent appliance venting
Certified for Category IV and direct vent
appliance venting
Pipe cement/primer
PVC
ANSI/ASTM D2564
IPEX System 636 Cements & Primers
CPVC
ANSI/ASTM F493
 The exhaust and intake components installed with this heater must be used for near heater piping BEFORE transitioning to the
approved materials listed above. DO NOT REMOVE these installed components. Doing so WILL VOID heater 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 water heater.
 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 heater vent connection, and at the termination
when using an PVC termination kit. DO NOT mix AL-29-4C piping from different manufacturers unless using adapters
specifically designed for the purpose by the manufacturer.
 *PVC-DWV for air intake applications ONLY.
Failure to follow these directions will result in substantial property damage, severe personal injury, or death.
Table 4 – Approved Materials for Exhaust Vent and Intake Pipe
DO NOT mix components from different venting systems. 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
Table 4. Failure to do so could result in property damage, severe personal injury, or death.
Exhaust vent adaptors are not designed as load-bearing devices, and must not be used to support exhaust vent piping. All vent pipes
must be properly connected, supported, and the exhaust must be pitched a minimum of ¼” per foot back to the heater to allow drainage
of condensate. Failure to properly support vent piping and follow the information in this statement could result in product damage,
severe personal injury, or death.
NOTE: The use of double-wall vent or insulated material for the combustion air inlet pipe is recommended in cold climates to prevent
the condensation of airborne moisture in the incoming combustion air.
High heat sources (sources generating heat 100
o
F / 37
o
C or greater, such as stove pipes, space heaters, etc.) may damage plastic
components of the water heater 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 water heater and related components
near high heat sources.
C. 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 water heater 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.
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.