General
• The heat pump must not be connected without the
permission of the electricity supplier and must be
connected under the supervision of a qualified electri-
cian.
• If a miniature circuit-breaker is used, this must have
motor characteristic “C” (compressor operation). For
MCB size, see “Technical specifications”.
• F2040 does not include an omnipolar circuit breaker
on the incoming power supply. The heat pump’s
supply cable (W1) must therefore be connected to a
circuit breaker with a breaking gap of at least 3 mm.
If the building is equipped with a residual current
device, the heat pump should be equipped with a
separate one. The residual current device should have
a nominal tripping current of no more than 30 mA. In-
coming supply must be 230 V 50Hz via electrical dis-
tribution units with fuses.
• If an insulation test is to be carried out in the building,
disconnect the heat pump.
• Communication cable (W2) is inserted from the rear
side through UB2.
• Connect communication cable (W2) from terminal
block (AA23-X4) to the indoor module.
NOTE
Electrical installation and any servicing must
be carried out under the supervision of a quali-
fied electrician. Disconnect the current with
the circuit breaker before carrying out any ser-
vicing. Electrical installation and wiring must
be carried out in accordance with the national
stipulations in force.
NOTE
Check the connections, main voltage and phase
voltage before starting the machine to prevent
damage to the air/water heat pump’s electron-
ics.
NOTE
The live external control must be taken into
consideration when connecting.
NOTE
If the supply cable is damaged, only NIBE, its
service representative or similar authorised
person may replace it to prevent any danger
and damage.
NIBE F2040Chapter |30
5 Electrical connections
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