Bosch Tronic 1000 T, Инструкция по установке и эксплуатации

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6 720 821 421 (2017/04) Tronic 1000 T
18 | Maintenance and repair
10.3 Vacation and Extended Shutdown
If the water heater is to remain idle for an extended period of
time, the power and water to the appliance should be isolated
to conserve energy and prevent the build up of dangerous
hydrogen gas.
The electric 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 and controls
should be checked by qualified service person.
Make certain the electric water heater is completely filled again
before operating.
10.4 Flushing the water heater
10.4.1 Draining the water heater
▶ Isolate the electrical supply at the main switchboard via the
circuit breaker switch or isolating switch, and then remove
the fuse.
▶ Isolate the cold water supply to the appliance.
▶ Gently raise the lever on the PTR valve to relieve the
pressure in the water heater until flow stops.
▶ Disconnect the cold water connection to the appliance and
attach drain hose.
▶ Operate the lever on the PTR valve again allowing air into
the water heater.
▶ The water heater will drain through the hose.
10.4.2 Flushing the water heater
▶ Complete the draining operation(

section 10.4.1) then
disconnect the hot water outlet connection and attach a
water supply hose to the water heater.
▶ Turn on the water supply and allow flow until the water from
the inlet becomes clear.
▶ After the water from the inlet becomes clear, remove the
hose and reconnect the hot and cold water connections.
10.4.3 Filling the water heater
▶ Open all hotwater taps in the house.
▶ Open the cold water isolating valve to the water heater.
▶ Close each tap as water flows freely from it.
▶ Check all piping for leaks.
▶ Reconnect power to the water heater.
Fig. 7
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.
WARNING:
Draining and flushing the water heater must
only be carried out by an authorised service
person.
A regular 5 years service plan by an
authorised person would include: draining
flushing, and refilling the water heater
CAUTION:
Turn off the power supply to the water
heater before draining water.
If you intend on being away from your house
for only a few days, we suggest you leave the
water heater switched on.
Large volumes of water will drain from the
cold water inlet.
▶ Ensure proper drainage of water.