General
All electrical equipment, except the outdoor sensors,
room sensors and the outdoor damper, is already con-
nected at the factory.
• Disconnect the heat pump before any insulation test
of the house wiring is carried out.
• F730 should be equipped with a separate RCD (30
mA).
• If a miniature circuit breaker is used, this should have
at least motor characteristic “C”. See page 64 for fuse
size.
• For the heat pump wiring diagram, see page 68.
• Communication and sensor cables to external connec-
tions must not be laid close to high current cables.
• The minimum area of communication and sensor
cables to external connections must be 0.5 mm² up
to 50 m, for example EKKX or LiYY or equivalent.
• When cable routing in F730, cable grommets UB1and
UB2, (marked in image) must be used. In UB1 and
UB2 the cables are inserted through the heat pump
from the back to the front. For dimensions diagram
see page 28.
NOTE
Switch (SF1) must not be moved to "" or " "
until F730 has been filled with water. Other-
wise the temperature limiter, thermostat and
the immersion heater may be damaged.
NOTE
Check the connections, main voltage and phase
voltage before the machine is started, to pre-
vent damage to the heat pump electronics.
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.
NOTE
Electrical installation and service must be car-
ried out under the supervision of a qualified
electrician. Cut the current with the circuit
breaker before carrying out any servicing.
Electrical installation and wiring must be carried
out in accordance with the stipulations in force.
MINIATURE CIRCUIT BREAKER (FC1)
Operation (230V), fan, circulation pumps etc. are intern-
ally fused by a miniature circuit breaker (FC1).
NIBE F730Chapter 5 | Electrical connections26
5 Electrical connections