Sime Format System 25 HE, Installation And Servicing Instructions, Page: 10 / 32

8
2.8 ELECTRICAL CONNECTION
The boiler is supplied with an electric cable.
Should this require replacement, it must be
purchased exclusively from SIME.
The electric power supply to the boiler must
be 230V - 50Hz single-phase through a
fused main switch, with at least 3 mm spac-
ing between contacts. Respect the L and N
polarities and the earth connection.
NOTE: SIME declines all responsibility for
injury or damage to persons, animals or
things, resulting from the failure to pro-
vide for proper earthing of the appliance.
2.8.1 Electrical board (fig. 12)
Prior to any operation, always turn off the
power supply. Remove the three screws (7)
fixing the control board, and pull forward the
panel until it tilts downwards.
In order to gain access to the electrical
board components, unscrew the four
screws (6) fixing the control panel cover.
2.8.2 Room thermostat (fig. 12)
After having removed the jumper, connect
electrically the room thermostat to termi-
nals 1-2 of the junction box (5).
In order to have better room comfort and
temperature control, we suggest you to
use a room thermostat belonging to
Class II, as specif ied by s t andar d
EN60730.1 (clean contact).
The relay kit cod. 8102800 permits use of
a 230 V AC AT line. The kit relay includes
a square with fixing screws and wires for
electrical connection.
6
1 2
3 4
5
7
8
Fig. 12
KEY
1
Pressure/temperature gauge
2 Heating programmer (optional)
3 Earth faston
4 Main electronic board
5 9 pole terminal strip
6 Control panel cover
7 Fixing screw
8 Rotary switch
ATTENTION: After having removed the three screws (7) tilt the
panel downwards to gain access.