Connections; Power Connection - Nibe F1245 Installer Manual

Connections

NOTE
To prevent interference, unscreened commu-
nication 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
AA1-X1
Connection 3x230V
AA1-X1
Connection 1x230V
AA1-X1
20 Chapter 5 | Electrical connections
F1245
N 0 PE L1 1 L2 L3
PE1
F1245
PE L1 1 L2 2 L3
PE1
F1245
N PE 0 L1 1
PE1
NOTE
F1245-12 contains scroll compressor, which
means that it is important that electrical con-
nections are made with the correct phase se-
quence. With the incorrect phase sequence,
the compressor 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 26.
Tariff control
If the voltage to the immersion heater and/or the
compressor disappears during a certain period, there
must also be blocking via the AUX-input, see "Connec-
tion options- Possible selection for AUX inputs".
NIBE™ F1245