Venting - Rheem PowerVent Series Use & Care Manual

Installing the water heater
The water heater must be installed with the factory supplied blower assembly in place.
Blower
Assembly
DANGER: Failure to install the
blower assembly and properly
vent the water heater to the
outdoors as outlined in the Venting
section of this manual will result
in unsafe operation of the water
heater causing bodily injury,
explosion, fire or death.
To avoid the risk of fire, explosion,
or asphyxiation from carbon
monoxide, NEVER operate the
water heater unless it is properly
vented and has adequate air supply
for proper operation as outlined in
the Venting section of this manual.
The vent pipe must overlap
a minimum of ½" on each
connection. It is important that
the vent pipe engages fully into
any pipe fitting and be kept in
that position until the adhesive
has fully cured. DO NOT drill or
punch holes in the plastic pipe or
fittings.
NOTICE: The vent piping must be
connected to the blower assembly
using the rubber coupling and
supplied clamps. The vent
pipe connections at the blower
assembly must be leak tested with
soap and water solution upon
initial startup. Repair any leaks
before allowing the water heater
to operate.
NOTICE: This unit is equipped
with a Flammable Vapour Sensor.
DO NOT apply power until
enough time has passed to allow
the vapours from the primer and
cement to dissipate.
12
Blower Assembly Installation
Connect blower assembly with the
electrical connector. Attach Blower
Rubber
Assembly to top pan using the six (6)
Coupling
screws provided (See diagram to the left).
DO NOT overtighten screws to ensure
Flue
plastic does not crack.
Baffle
Install rubber coupling (supplied in the
box with water heater) on blower housing
and secure it.

Venting

The water heater must be vented to
the outdoors as described in these
instructions. DO NOT connect this water
heater to an existing vent or chimney - it
must be vented separately from all other
appliances.
This water heater must be vented to the
outdoors with a venting system that is
certified to the Underwriter's Laboratories
of Canada Standard, ULC-S636 (Current
Edition).
The vent system must be installed
in accordance with the vent system
manufacturer's installation instructions.
The first 3 ft. (900 mm) from the
appliance flue outlet must be readily
accessible for visible inspection.
"It is not acceptable to interchange
components of this system with another
certified vent system or unlisted plastic
pipe and fittings."
NOTICE: This unit must be vented
using only 2" or 3" diameter PVC
or CPVC pipe and fittings that are
certified to ULC-S636.
The unit may be vented horizontally
through a wall or vertically through the
roof.
Vent pipe runs must be adequately
supported along both vertical and
horizontal lengths.
Maximum unsupported length is
recommended to be no more than
6 feet (1.8 m).
NOTICE: The Blower Assembly is
model specific and only the blower
assembly supplied should be used on
this water heater.
It is imperative that the first hanger
be located on the horizontal length
immediately adjacent to the first
90-degree elbow from the vertical rise of
vent pipe connected to the water heater.
The support method used should isolate
the vent pipe from floor joists or other
structural members to help prevent the
transmission of noise and vibration.
DO NOT support, pin or otherwise
secure the venting system in a way that
restricts the normal thermal expansion and
contraction of the chosen venting material.
If the water heater is being installed as a
replacement for an existing power vented
water heater, a thorough inspection of
the existing venting system must be
performed prior to any installation work.
Verify that the correct materials as
detailed above have been used, and
that the minimum or maximum vent
length and terminal locations as
detailed in this manual have been
met.
Carefully inspect the entire venting
system for any signs of cracks or
fractures, particularly at the joints
between elbows or other fittings and
the straight length of vent pipe.
Check the system for signs of sagging
or other stresses in the joints as a
result of misalignment of any
components in the system.
If any of these conditions are found,
they must be corrected in accordance
with the venting instructions in this
manual before completing the
installation and putting the water
heater into service.