General
All electrical equipment, except the outdoor sensors,
room sensors and the current sensors are ready connec-
ted at the factory.
■ Disconnect the heat pump before insulation testing
the house wiring.
■ F470 is not switchable between 3x230V and 3x400V.
■ F470 must be equipped with a separate earth-fault
breaker (30 mA).
■ If a miniature circuit breaker is used, this should have
at least motor characteristic “C”. See table on page 26
for fuse size.
■ For the heat pump wiring diagram, see page 64.
■ 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 F470, 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
23.
NOTE
Switch (SF1) must not be moved to "" or " "
until F470 has been filled with water. Otherwise
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 prevent
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 carried
out under the supervision of a qualified electri-
cian. Cut the current with the circuit breaker
before carrying out any servicing. Electrical in-
stallation and wiring must be carried out in ac-
cordance with the stipulations in force.
Miniature circuit breaker (FA1)
Control (230 V), fans, compressor, circulation pump etc.
are internally fused by a miniature circuit breaker (FA1).
Caution
Check the miniature circuit-breaker (FA1). It may
have tripped during transportation.
Temperature limiter (FD1)
The temperature limiter (FD1) cuts the current supply to
the electric additional heat if the temperature rises
between 90 and 100°C and can be manually reset.
Resetting
The temperature limiter (FD1) is accessible behind the
front cover. Reset the temperature limiter by carefully
pressing the button (FD1-SF2) using a small screwdriver.
21Chapter 5 | Electrical connectionsNIBE F470
5 Electrical connections
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