Electrical Connection; The Control Unit - REMEHA Avanta Range 24c Installation & Service Manual

fi g. 17 Electrical components with live 230 V
112952.LT.GB.W7H.022
fi g. 18

The control unit

LT.AL.W7H.000.023
230 V
2.6

Electrical connection

• Connect the boiler to the fused (3 amp) switch spur unit
adjacent to boiler.
• The switch unit must always be accessible.

When the switch spur is on the following components of this
appliance can be live (230 V):
• electrical connection pump;
• electrical connection gas combination block;
• electrical connection three-way valve;
• most parts of the control unit;
• ignition transformer;
• X1, X2, X4, X5, X6 and X7 terminal block;
• 230 V supply cable connection.
2.6.1 The control unit
The Remeha Avanta Plus has an electronic regulation and
control unit with an integrated ionisation flame detector. The
heart of the boiler control unit is a microprocessor, the 'abc
which controls and protects the boiler.
The maximum rated input is between 115 and 180 W (depend-
ing on boiler type).
The boiler is fully pre-wired internally, all external connections
can be made using the terminal blocks X5 - X7 - X9 and 230
V input (X2 terminal). See the diagram for the position of the
connectors and fuse (F2) on the control unit.
The most important properties of the control unit are summa-
rized in table 04.
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