35
Voltage
Frequency
Absorbed power
Protection index
Noise level
volt
Hz
kW
IP
dB (A)
MC
MCS
MC
MCS
230
50
0,117
0,147
44
52
47
ELECTRICAL CONNECTIONS - WIRING DIAGRAMS
The boiler must be connected to an earthed, single-phase 220-230V-50 Hz mains supply by means of a
three-wire cable, ensuring that connections to the LINE and NEUTRAL terminals are made correctly.
A bipolar switch must be used with contacts opening to at least 3 mm.
The power lead must only be replaced by another with the following characteristics: “HAR H05 VV-F”
3 X 0.75 mm
2
.
Installation must be made in compliance with local regulations.
Make a good earth connection.
To gain access to the electrical panel which houses the power supply terminal block and any connection to
a room temperature thermostat, proceed as follows:
●
Disconnect the boiler power supply
●
Undo the two control panel fixing screws 1 (fig. 1)
●
Rotate the control panel until it comes up against the first
safety stop. Lift to release and rotate until it opens completely
(fig. 2).
NOTE: DO NOT FORCE THE PANEL AS THIS MIGHT
BREAK THE OPENING MECHANISM.
●
Undo the two cover attachment screws to gain access to
the electrical connections (fig. 3).
To gain access to the levels board and the IONO control unit
undo thw screws (
3
) from closure panel
B
(fig. 4). Furthermore,
to adjust the calibration potentiometers, by the aid of a screwdriver,
remove the corresponding protection plugs (
4
) (fig. 4).
1
Fig. 1
L
N
T A
T L
1
2
3
4
2
B
4
3
Fig. 2
Fig. 3
Fig. 4
