Vent And Combustion Air-Inlet - Rheem Power Direct Vent Series Use & Care Manual

WARNING: Never use
an open flame to test for
gas leaks, as property
damage, personal injury, or
death could result.
!
WARNING: Failure to
install a water heater suitable
for the altitude at the location
it is intended to serve, can
result in improper operation
of the appliance resulting
in property damage and/or
producing carbon monoxide
gas, which could result in
personal injury, or death.
DANGER: Failure to
properly install the vent and
combustion air-inlet systems as
outlined in the Vent and
Combustion Air-Inlet 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 the

vent and combustion air-inlet

systems are properly installed
as detailed in the "Vent and
Combustion Air-Inlet" section
of this manual.
The vent and combustion air
inlet pipes must overlap a
minimum of 1/2 in. (1.3 cm)
at each joint. It is important
that the vent and combustion
air-inlet pipes engage 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.
Leak Testing
The water heater and its gas connections
must be leak tested at normal operating
pressures before it is placed in operation.
Turn on the manual gas shut-off
valve near the water heater.
Use a soapy water solution to test for
leaks at all connections and fittings.
Pressure Testing the Gas Supply System
The water heater and its individual shut-
off valve must be disconnected from the
gas supply piping system during any
pressure testing of that system at test
pressures in excess 1/2 psi (3.5 kPA).
High Altitude
Input rating of this water heater is based
on sea level operation. At higher eleva-
tions the actual input rate may be lower
than the value listed on the rating label
due to the derating of Natural Gas and LP
Gas. For Power Direct Vent models listed
in the venting tables that do not show
Vent and Combustion Air-Inlet
This water heater is a direct vent appli-
ance and must be installed so that all air
for combustion is derived directly from
the outside atmosphere and all flue gases
are discharged to the outside atmosphere.
For proper installation of the vent and
combustion air-inlet systems, follow the
instructions as detailed in this manual.
DO NOT connect this water heater to
an existing vent or chimney - it must be
vented separately from all other appli-
ances.
NOTICE: This water heater is approved
to use the following materials for pipe of
the vent and Combustion Air-Inlet sys-
tems:
PVC (Schedule 40, Cellular Core,
ASTM-F891)
PVC (DWV, ASTM-D2665 or CSA
B181.2)
PVC (Schedule 40, ASTM-D1785 or CSA
B137.3)
PVC (SDR Series, ASTM-D2241 or CSA
B137.3)
Bubbles indicate a gas leak that must
be corrected.
The factory connections to the combina-
tion gas control should also be leak tested
after the water heater is placed in opera-
tion.
The water heater must be isolated from
the gas supply piping system by closing
its individual manual gas shutoff valve
during any pressure testing of the gas
supply at test pressures equal to or less
than 1/2 psi (3.5 kPa).
venting configurations above 7,700 ft.
(2,347 m), contact the water heater manu-
facturer for a required High Altitude Kit
that will allow the specific water heater
model to operate at altitudes between
7,700 ft. (2,347 m) and 10,200 ft. (3,109
m),(see page 40).
CPVC (CPVC 4120, ASTM-D2846 or
CSA B137.6)
CPVC (Schedule 40, ASTM-F441 or CSA
B137.3)
CPVC (SDR Series, ASTM-F442)
ABS (Schedule 40, DWV, ASTM-D2661
or CSA B181.1)
ABS (Schedule 40, DWV, Cellular Core,
ASTM-F628)
This water heater is approved to use the
following materials for the fittings of the
vent and combustion air-intake systems:
PVC (Schedule 40 DWV, ASTM D2665)
CPVC (Schedule 40, ASTM F438)
ABS (Schedule 40 DWV, ASTM D2661)
DO NOT mix ABS pipe and fittings
with PVC or CPVC pipe fittings. Note:
It is acceptable to interchange PVC and
CPVC pipe and fittings.
Vent and combustion air-inlet systems
must be adequately supported along both
vertical and horizontal lengths.
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