The boiler must be connected to a sin-
gle phase 230V- 50Hz power supply
through a main switch protected by a
fuse with at least 3 mm between con-
tacts (fig. 13). The installation of a room
thermostat is recommended in order to
obtain a better regulation of the tempe-
rature and facility within the premises,
has to be of II class, and conform with
the EN 60730.1 norm (clean electrical
connection).
NOTE: SIME shall not accept any liabi-
lity for damage or injury resulting from
failure to ground the boiler.
2.6.1 CONNECTION OF THE
CONTROL UNIT
The electrical circuit includes a series of
connectors for installation of an optional
control unit, RVA 43.222 cod. 8096303,
marked with different colours: black,
orange and brown (fig. 5). Connectors
are polarised so that the order cannot be
inverted.
To install the control unit, connect these
connectors and remove jumpers 13 - 14
and 15 - 17 (marked with bold letters in
the electric system of the figure 6) from
the terminal board.
The control unit also permits the use of
room temperature control units and pro-
bes; the polarised, coloured connectors
of these are located in a bag inside the
control panel.
28
IT
GB
FR
BE
DE
1
2
3
4
6
7
Fig. 5
KEY
1 Interference filter
2 Connectors of control unit (black/ red/ brown)
3 Electronic device FM 12
4 Boiler’s terminal board
6 Insulation transformer (for FR/BE)
7 Connector connection of the insulation transformer
black
or
ange
br
o
w
n
