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13
Care and cleaning of the water heater
Draining the Water Heater
CAUTION: Shut off power to the water
heater before draining water.
DANGER: Before manually operating
the relief valve, make certain no one will
be exposed to the hot water released by
the valve. The water drained from the
tank may be hot enough to present a
scald hazard and should be directed to a
suitable drain to prevent injury or damage.
In order to drain the water heater, turn
off the cold water supply. Open a hot
water faucet or lift the handle on the
relief valve to admit air to the tank.
Attach a garden hose to the drain valve
on the water heater and direct the stream
of water to a drain. Open the valve.
Vacation and Extended Shut-Down
If the water heater is to remain idle for an
extended period of time, the power and
water to the appliance should be turned
off to conserve energy and prevent a
build-up of dangerous hydrogen gas.
The water heater and piping should be
drained if they might be subjected to
freezing temperatures.
After a long shut-down period, the
water heater’s operation and controls
should be checked by qualified service
personnel. Make certain the water heater
is completely filled again before placing
it in operation.
NOTICE: Refer to the
Hydrogen Gas Caution in the
Operating Instructions.
Routine Preventative Maintenance
Properly maintained, your water heater
will provide years of dependable
trouble-free service.
It is suggested that a routine preventive
maintenance program be established and
followed by the user.
It is further recommended that a
periodic inspection of the operating
controls, heating element and wiring
should be made by service personnel
qualified in electric appliance repair.
Most electrical appliances, even
when new, make some sound when
in operation. If the hissing or singing
sound level increases excessively, the
electric heating element may require
cleaning. Contact a qualified installer or
plumbing contract to inspect.
At least once a year, lift and release the
lever handle on the temperature pressure
relief valve, located near the top of the
water heater, to make certain the valve
operates freely. Allow several gallons
to flush through the discharge line to an
open drain.
A water heater’s tank can act as a setting
basin for solids suspended in the water.
It is therefore not uncommon for hard
water deposits to accumulate in the
bottom of the tank. It is suggested that a
few quarts of water be drained from the
water heater’s tank every month to clean
the tank of these deposits.
Rapid closing of faucets or solenoid
valves in automatic water using
appliances can cause a banging noise
heard in a water pipe. Strategically
located risers in the water pipe system
or water hammer arresting devices can
be used to minimize the problem.
The anode rod should be removed from
the water heater’s tank annually for
inspection and replaced when more than
6″ of core wire is exposed at either end
of the rod.
Make sure the cold water supply is
turned off before removing anode rod.
NOTICE: DO NOT remove the
anode rod from the water heater’s
tank, except for inspection and/or
replacement, as operation with the
anode rod removed will shorten the
life of the glass lined tank and will
exclude warranty coverage.
DANGER: Before manually
operating the relief valve,
make certain no one will
be exposed to the danger of
coming in contact with the hot
water released by the valve.
The water may be hot enough
to create a scald hazard. The
water should be released into
a suitable drain to prevent
injury or property damage.
NOTICE: If the temperature
and pressure relief valve
on the hot water heater
discharges periodically,
this may be due to thermal
expansion in a closed water
system. Contact the water
supplier or your plumbing
contractor on how to correct
this. DO NOT plug the relief
valve outlet.
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