Cable lock
Use a suitable tool to release/lock cables in the heat pump
terminal blocks.
2
1
2
3
LEK
3
4
1
2
$OW
$OW
Connections
NOTE
To prevent interference, unscreened communic-
ation and/or sensor to external connections
cables must not be laid closer than 20 cm to
high voltage cable when cable routing.
Power connection
F1245 must be installed via an isolator switch with a
minimum breaking gap of 3mm. Minimum cable area
must be dimensioned according to the fuse rating used.
Supplied cable for incoming electricity is connected to
terminal block X1 on the immersion heater card (AA1).
NOTE
F1245 is not reconnectable between 1-phase
and 3-phase, neither is it reconnectable between
3x230V and 3x400V.
Connection 3x400V
$$;
PE1
L1 1 L2 L3PE0N
$$;
Connection 3x230V
$$;
PE1
1L22L3L1PE
$$;
Connection 1x230V
$$;
PE1
0L11PEN
$$;
NOTE
F1245-12 contains scroll compressor, which
means that it is important that electrical connec-
tions are made with the correct phase sequence.
With the incorrect phase sequence, the com-
pressor does not start and an alarm is displayed.
If separate supply to the compressor and immersion
heater is required, see section "Switch for external
blocking of addition and/or compressor" on page 24.
19Chapter 5 | Electrical connectionsNIBE™ F1245
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