Care And Cleaning; Draining The Water Heater - Bradford White RE2H50R10B-1NCWT Manuel D'utilisation Et D'installation

Care and cleaning.

Routine Preventive Maintenance
DANGER:
Risk of Scald -
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.
NOTE: 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.
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.
Temperature and Pressure-Relief Valve:
At least once a year, lift and release the lever handle on the
temperature and pressure-relief valve, located
on the front-right side of the water heater, to make certain the
valve operates freely. Allow several gallons to flush through the
discharge line to an open drain.

Draining the Water Heater

CAUTION:
Risk of Shock -
the water heater before draining water.
DANGER:
Risk of Scald -
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.
Extended Shutdown Periods or Vacations Exceeding Vacation Mode Options
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 and the water heater drained to conserve energy and
prevent a build up of dangerous hydrogen gas. This unit has
no power button, power can only be shut off at the circuit
breaker or disconnect switch.
The water heater and piping should be drained if they might
be subjected to freezing temperatures.
After a long shutdown period, the water heater's operation
10
Before manually
Shut off power to
Before manually
Periodic Inspection (once a year):
It is further recommended that a periodic inspection of the
operating controls, heating elements 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 plumber for inspection.
Flushing Tank:
A water heater'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.
To clean the tank of these deposits, follow these steps:
1. Attach a garden hose to the drain valve located at the bottom
of the unit and direct that hose to a drain.
2. Open the drain valve with a flat screwdriver.
3. Once a few quarts of water have been drained, close the drain
valve.
This should be done with the cold water supply open such that
water removed through drain valve is replaced, and water supply
flow helps to remove sediment.
To drain the water heater, follow these steps:
1. Attach a garden hose to the drain valve located at the
bottom of the unit and direct that hose to a drain.
2. Turn off the cold water supply.
3. Open the drain valve with a flat screwdriver.
4. Admit air to the tank by opening a hot water faucet or
lifting the handle on the relief valve.
Use a flat slot
screwdriver to
turn valve.
and controls should be checked by qualified service
personnel. Make certain the water heater is completely filled
again before placing it in operation.
NOTE: Refer to the Hydrogen Gas Caution
in the Operating Instructions (see page 3).