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A
Inserts
Z
Ø4 wood screw
¼
For the connection of the outside temperature sensor, refer to
the chapter "Electrical Connections".
4.10 Electrical connections
4.10.1.
Control unit
The boiler is fully pre-wired. The mains supply is made via the cable
C
connected to the mains. All other external connections can be made
to the connection connectors (low voltage). The main characteristics
of the control unit are described in the table below.
Power supply voltage
230 VAC/50Hz
Rating of the main fuse F1 (230 VAC) 6.3 AT
Fuse rating F2 (230 VAC)
2 AT
Fan-DC
27 VDC
CAUTION
Keep to the polarity shown on the terminals: phase (L),
neutral (N) and earth
*
.
CAUTION
The following components of the appliance are at a
voltage of 230 V:
4
Boiler pump (Heating circuit).
4
Boiler pump (DHW circuit).
4
Combined venturi and gas valve unit.
4
3-way valve.
4
The majority of components in the control panel and
the terminal box.
4
Power supply cable.
8800N003-C
2
4. Installation
MCA 25/28 BIC
28
15/06/12 - 300022159-001-01
Summary of Contents for Innovens MCA 25/28 BIC
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