Rheem Marathon Thermal MTS105200 - Manual (Page 11)

11
Vacation and Extended Shut-­Down
If the storage tank is to remain idle for
an extended period of time, the water
to the appliance should be turned off
to conserve energy.
If the storage tank is installed in a
location where it could freeze when
not operational, all water must be
drained from the unit and piping If
the tank is full of water and freezes,
the tank will break. See the "Draining
the Storage tank" section for details on
draining the unit. Freeze damage is
not covered under the manufacturer's
warranty.
Care and cleaning of the storage tank.
Draining the Storage tank
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.
NOTICE: Additional instructions for
draining the unit are located on the
storage tank.
In order to drain the storage tank, turn
off the cold water supply. Open a hot
water faucet first or lift the handle on
the relief valve (and keep open) to
admit air to the tank during draining.
(This will relieve the pressure in the
line.)
Attach a garden hose to the drain
valve on the storage tank and direct
the stream of water to a drain. Open
the valve.
Please reference the "To Fill the
Storage tank" section for instructions
on how to refill the unit.
Routine Preventative Maintenance
Properly maintained, your storage
tank will provide years of dependable
trouble-­free service.
It is suggested that a routine
preventive maintenance program be
established and followed by the user.
At least once a year, lift and release
the lever handle on the temperature
pressure relief valve, located near
the top of the storage tank, to make
certain the valve operates freely.
Allow several gallons to flush through
the discharge line to an open drain.
A storage tank’s tank can act as a
settling 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 storage tank’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.
Periodically check for external water
leaks at all connection points.
NOTICE: If the temperature and
pressure relief valve on the storage
tank 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.
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.