Electrical Connections; General - Nibe F470 Installer Manual

5 Electrical connections

General

All electrical equipment, except the outdoor temperature
sensors and room temperature sensors are ready con-
nected at the factory.
• Electrical installation and wiring must be carried out
in accordance with the stipulations in force.
• Disconnect F470 before insulation testing the house
wiring.
• F470 must be equipped with a separate earth-fault
breaker (30 mA).
• F470 must be installed via an isolator switch. The cable
area has to be dimensioned based on the fuse rating
used.
• If a miniature circuit breaker is used, this must have
at least motor characteristic "C". See section
steps of the immersion
• To prevent interference, sensor cables to external
connections must not be laid close to high voltage
cables.
• The minimum area of communication and sensor
cables to external connections must be 0.5 mm² up
to 50 m, for example EKKX, LiYY or equivalent.
• For an electrical wiring diagram for F470, see the
"Technical specifications" section.
• When routing a cable into F470 the cable grommets
(UB1 and UB2) must be used.
1 For dimensions diagram, see
24 Chapter 5 | Electrical connections
"Power
heater" for fuse size.
1
page 26.
UB1
UB2
NOTE
Electrical installation and any servicing must
be carried out under the supervision of a quali-
fied electrician. Disconnect the current using
the circuit breaker before carrying out any ser-
vicing.
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
Check the connections, main voltage and phase
voltage before the machine is started, to pre-
vent damage to the heat pump electronics.
NOTE
Do not start the system before filling up with
water. Components in the system could be
damaged.
NIBE F470