Electrical connection
19
VVM 240
VVM 240 must be installed via an isolator switch with
a minimum breaking gap of 3 mm. Other electrical
equipment, except the outdoor sensor and the current
sensors, are connected at the factory.
Disconnect the electric boiler before insulation testing
the house wiring.
Connection
NOTE!
Reset the temperature limiter, it may
have tripped during transport.
NOTE!
The switch (8) must not be moved
from 1 or “ ” until the boiler has
been filled with water. Otherwise the
temperature limiter, thermostat,
compressor and the immersion heater
can be damaged.
The automatic heating control system, circulation
pump (16), charge pump (40) and its cabling, are
internally fuse protected with a miniature circuit break-
er (7).
NOTE!
Electrical installation and service must
be carried out under the supervision of
a qualified electrician. Electrical
installation and wiring must be carried
out in accordance with the stipulations
in force.
The supply to the electric boiler is connected to termi-
nal (9) via a strain relief. Connection must not be car-
ried out without the permission of the electricity suppli-
er and under the supervision of a qualified electrician.
The cable entry conduit is dimensioned for cable with
a max Ø 19 mm.
8
The power is controlled via a contactor which is oper-
ated by a microprocessor.
The temperature limiter (6) cuts off the supply to the
immersion heater if the temperature rises to between
90 and 100 °C; it can be manually reset by pressing
the button on the temperature limiter.
Access to the lower electrical connections
Open the upper and lower front covers. Remove the
front cover in the middle by loosening its four screws.
The load monitor card (2) and microprocessor card
(34) are now accessible on the left-hand side.
Remove the protection plate by loosening its four
screws to gain access to the right-hand side.
10
10
V
AN
ADI
U
M
No. 7
CHROME
2
9
34
NOTE!
Work behind screwed covers may only
be carried out under the supervision
of a qualified installation engineer.
