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WARNING: Do not attempt to convert this water heater for use with a different type of gas other than the type
shown on the rating plate. Such conversion could result in hazardous operating conditions.
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 gas shut-off valve(s) to
the water heater.
Use a soapy water solution to test for
leaks at all connections and fittings.
Bubbles indicate a gas leak that must
be corrected.
The factory connections should also be
leak tested after the water heater is placed
in operation.
High Altitude
Ratings of gas appliances are based on
sea level operation and need not be
changed for installations at elevations up
to 3,280 feet.
NOTICE: For installations above 3,280
feet, the connector on the PC board
must be replaced for High Altitude
installations. Please contact your local
distributor, dealer, or Rheem for
replacement connector.
Pressure Testing the Gas Supply System
The water heater and its manual gas shut-
off valve must be disconnected from the
gas supply piping system during any
pressure testing of the system at
pressures in excess of 1/2 psi (14” w.c.).
The water heater must be isolated from
the gas piping system by closing the
manual gas shut-off valve during any
pressure testing of the gas supply piping at
pressures equal to or less than
1/2 psi (14” w.c.).
Gas Supply
It is recommended that a Manual Gas
Appliance Shutoff Valve be installed at the
gas connection of the water heater at the
time of installation (see diagram to the
left).
The branch gas supply line to the water
heater should be clean 3/4” black steel
pipe or other approved gas piping
material.
A ground joint union or ANSI design
certified semi-rigid or flexible gas
appliance connector should be installed in
the gas line close to the water heater. The
National Fuel Gas Code (NFGC)
mandates a manual gas shut-off valve: See
(NFGC) for complete instructions.
If flexible connectors are used, the
maximum length shall not exceed 36”.
If lever type gas shut offs are used, they
shall be T-Handle type.
Compound used on the threaded joints of
the gas piping must be of the type
resistant to the action of LP gas. Use
compound sparingly on male threads only.
A sediment trap should be installed at the
bottom of the gas line.
Do not use excessive force (over 31.5 ft
lbs.) in tightening the pipe, particularly if
teflon pipe compound is used, as the unit
may be damaged.
The inlet gas pressure to the water heater
must not exceed 10.5” w.c. for natural or
14” wc for LP gas. For purposes of input
adjustment, the minimum inlet gas
pressure (with main burner on) is shown
on the water heater rating plate. If high or
low gas pressures are present, contact your
gas supplier for correction.
WARNING: Never use
an open flame to test for
gas leaks, as property
damage, personal injury, or
death could result.
Manual Gas
Appliance
Shut-off
(Supplied)
Sediment
Trap
Manual
Gas
Supply
Line
Shut-off
Va lv e
Union
Cap
WARNING: Install a
gas pressure regulator, in
the gas supply line, which
does not exceed the
maximum supply pressure.
DO NOT use an industrial
type gas regulator.