Electrical Connection; The Control Unit - REMEHA Avanta 18v Installation And Service Manual

230 V
59970LGBW7H011a
LTALW7H000023a

2.6 Electrical connection

•
Connect the boiler to the fused (3 amp) switch spur unit
adjacent to the 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 gas combination block;
•
most parts of the control unit;
•
ignition transformer;
•
X1, X2, X4, X5, X6 and X7 terminal strip;
•
230 V supply cable connection.
59970LTGBW7H011

2.6.1 The control unit

The Remeha Avanta 18v has an electronic regulation and con-
trol unit with an integrated ionisation flame detector. The heart
of the boiler control unit is a microprocessor, the 'abc
controls and protects the boiler.
The maximum rated input of the boiler is 130 W. The boiler is
fully pre-wired internally, all external connections can be made
using the terminal strips X5 - X7 - X9 and 230 V input (X2 ter-
minal). 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 03.
LTALW7H000023
Manufacturer
Supply voltage
Pre-purge time
Post-purge time
Ignition time
Safety time
Anti-cycling time
Fuse value F1 (230 V)
DC fan
table 03

Any loads other than those specified above are only allowed if
an isolating transformer is used.
17
Sit Controls
230 V – 1ph – 50 Hz
3 s
5 s
2.5 s
5 s
3 till 10 min.
2 AT
24 VDC
Control unit characteristics
, which
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