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.
Gas Supply
The branch gas supply line to the water
heater should be clean properly sized steel
pipe or other approved gas piping mate-
rial.
A 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 maxi-
mum length shall not exceed
36" (91.4 cm) and must meet the require-
ments in ANSI Z21.24/CSA 6.10-
Connectors for Gas Appliances.
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.
Where a sediment trap is not incorpo-
rated as part of the appliance, a sediment
trap shall be installed downstream of the
equipment shutoff valve as close to the
inlet of the appliance as practical at the
time of the appliance installation.
The sediment trap shall be either a tee fit-
ting with a capped nipple in the bottom
outlet or other device recognized as an
effective sediment trap.
”Do not use excessive force over 31.5 ft.
lbs. (42.7 Nm) in tightening the pipe joint
at the combination gas control inlet, par-
ticularly if teflon pipe compound is used,
as the valve body may be damaged.
The inlet gas pressure to the water heater
must not exceed 14.0 in. w.c. (3.5 kPa)
w.c. for natural gas, or 14.0 in. w.c. (3.5
kPa) w.c. 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.
10
To Fill the Water Heater
Make certain that the drain valve is
closed, then open the shut-off valve in the
cold water supply line.
Open each hot water faucet slowly to
allow the air to vent from the water
heater and piping.
A steady flow of water from all hot water
faucet(s) indicates a full water heater.
Do not allow the flammable vapor sensor
to become submerged in water.
WARNING: The tank
must be full of water before
the water heater is turned
on. The water heater
warranty does not cover
damage or failure resulting
from operation with an
empty or partially empty
tank.
Condensation
Condensation can form on the tank
when it is first filled with water.
Condensation might also occur with a
heavy water draw and very cold inlet
water temperatures.
Drops of water falling on the burner can
produce a sizzling or pinging sound.
This condition is not unusual, and will
disappear after the water becomes heated.
If, however, the condensation continues,
examine the piping and fittings for pos-
sible leaks.
NOTICE: Additional information on this
subject may be found at www.rheem.com,
under Rheem Water Heating, "Support",
scroll down to the Technical Service
Section and to Bulletins 1400 Series
Section and choose Bulletin #1402.
Installing the Water Heater
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