Rinnai KB Série Manuel D'installation Et D'utilisation page 10

Adaptor Installation
For installation in Canada, field-supplied PVC/CPVC used
for combustion venting must comply with CAN/CGA
B149.1 (latest edition) and be certified to Type BH Gas
Venting Systems, ULC-S636.
Components of any certified system CANNOT be
substituted with any other vent system(s) or unlisted
pipes and/or fittings. All listed components, primers
and glues are part of the certified vent system and
therefore MUST be from a single manufacturer.
When installing the Ubbink adaptor with the twin pipe
PVC/CPVC system:

Install the system in according to Ubbink/Rolux, and
Rinnai Installation Instructions.

Use the 3"/5" Concentric to Twin pipe Adaptor with
3" or 4" diameter PVC/CPVC venting only.

It is the responsibility of the installer to follow all
national codes, standards and local ordinances, in
addition to instructions laid out in this manual for
vent/intake clearances and other safety
requirements.

If venting conflicts arise between this manual and the
respective OEM's manual, the manufactures'
installation instruction will take precedence providing
they meet the intent of all national codes, standards
and local ordinances having jurisdiction. Follow this
manual together with applicable codes, standards
and/or ordinances for installation of the intake/vent
pipe(s) and all other applicable water heater
installation procedures.
WARNING
Current codes prohibit the application of external
insulation on plastic vent pipe together with the use of
cellular core PVC, CPVC, and Radel as venting materials.
PVC/CPVC Twin Pipe Adaptor Installation Instructions:
STEP 1:
Measure the total venting distance required to reach the
outside wall or roof. Determine the diameter of venting
components to be used based on required vent length
(refer to maximum equivalent vent length tables of this
section).
STEP 2:
Before installing the concentric to twin pipe adaptor,
inspect each vent component for damage making sure the
gaskets for each component are undamaged. Do not
NOTICE
attempt to install or repair damaged components. If a
gasket is damaged, these are available through Rinnai and
its distributors. Do not use gaskets from another
manufacturer.
STEP 3:
Adaptor vent pipe MUST be securely fastened to structure,
at the eccentric increaser or as close as possible thereafter .
Straps to be field supplied. Use straps, clamps or other
fasteners that will not score or damage pipes and be
acceptable by local codes.
Securing Strap
Eccentric
Increaser
Wall support for Eccentric Increaser
STEP 4:
Use PVC to Polypropylene Eccentric Increaser (supplied with
the adaptor) to transition from PP to PVC 3"; additional
PVC/CPVC bushing, or other type of reducing fittings is
required to transition to 4" pipe.
3/5 Concentric to Twin Pipe Adaptor
KB Series Manual 23