Protection According To The Temperature (Valid For All Models); Models Equipped With A Heat Exchanger (Serpentine Tube); Mounting; Important Rules - Bosch Tronic 3000 T Installation Instructions Manual

EN
Electrical switch with one knob:
0 - switched off;
I - switched on;
The knob lit when the switch is on.
The control lamp on the panel indicates
the state (the mode) in which the appli-
ance is placed: it is lit when the water is
being heated and is switched off when
the specified by the thermostat water
temperature level is reached.
3. Protection according to the tempera-
ture (valid for all models).
The appliance is equipped with a special
facility (thermal circuit-breaker) for pro-
tection against over-heating of the water,
which is switching off the heater from
the electricity network, when the tem-
perature reaches too high values. The
facility has to be restored compulsory af-
ter repairing the reason for its starting
up.
In case of activating of this automatic
protection it is necessary to turn to an
authorized service for the reparation of
the problem.
VII. Models equipped with a
heat exchanger
(serpentine tube) Fig.1d
and Table 2.
These water heaters allow energy savings
during the year's heating season. This is
achieved by the built in heat exchanger
(boiler tube). With its assistance, the
water heaters may heat water without
consuming electricity, by using local or
central water heating. Maximum tem-
perature of the heat carrier: 80°C.
The water heaters equipped with a heat
exchanger offer three possibilities for
water heating:
Εlectric water heater | 17
1. Via an electric heating element
2. Via a heat exchanger /boiler tube/
3. Combined heating - via boiler tube and
electric heating element

Mounting:

In addition to the mounting manner out-
lined above, especially for the latter
models, it shall be required to connect
the heat exchanger to the heating instal-
lation. The connections are to be carried
out in observance of the direction indi-
cated by the arrows on Fig. 1d.
We recommend you mount stopcocks at
the heat exchanger's entry and exit
points. By stopping the flow of the ther-
mophore via the lower (stopcock) you
shall avoid the unnecessary circulation
of the thermophore during periods of
use only of the electric heating element.
Upon disassembly of you water heater
equipped with a heat exchanger you
must close both stopcocks.
VIII. Important rules
- The water heater must only be mounted in
premises with normal fire resistance.
- Do not switch on the water heater unless
you established it was filled with water.
- Qualified specialists and Electricians must
only perform the connecting of the wa-
ter heater to the water and electric
mains.
- Upon connecting the water heater to the
electric mains care must be taken to
connect the safety lead.
- If the probability exists for the premise's
temperature to fall below 0°C, the water
heater must be drained (observe the
procedure outlined in section IV, subsec-
tion 2 ''Water heater's piping connec-
tion" )
- During use (water heating mode), the
dripping of water from the safety return-
valve's drainage opening is normal. The
same must be left open to the atmos-