Electrical Connections; General - Nibe F370 Installer Manual

Electrical connections

General

All electrical equipment, except the outdoor sensors, room
sensors and the current sensors are ready connected at the
factory.
• Electrical installation and wiring must be carried out in
accordance with national provisions.
• Disconnect F370 before insulation testing the house wir-
ing.
• F370 must be fitted with a residual current device. If the
property is equipped with a residual current device, F370
must be equipped with a separate one.
• F370 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 triggering characteristic "C". See section "Technical
specifications" for fuse size.
• To prevent interference, communication cables to external
connections must not be laid in the vicinity of 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 F370, see the "Tech-
nical specifications" section.
• When routing a cable into F370, the cable grommets (UB1)
and (UB2) must be used.
NOTE
Electrical installation and any servicing must be
carried out under the supervision of a qualified
electrician. Disconnect the current using the cir-
cuit breaker before carrying out any servicing.
NOTE
If the supply cable is damaged, only NIBE, its ser-
vice representative or similar authorised person
may replace it to prevent any danger and damage.
22 Chapter 5 | Electrical connections
NOTE
Check the connections, main voltage and phase
voltage before the product is started, to prevent
damage to the heat pump electronics.
NOTE
Do not start the system before filling up with wa-
ter. Components in the system could be damaged.
FQ10
FQ10-S2
FC1
MINIATURE CIRCUIT-BREAKER (FC1)
Operation (230 V), fan, compressor, circulation pump, etc.,
are internally fused by a miniature circuit breaker (FC1).
Caution
Check the miniature circuit-breaker (FC1). It may
have tripped during transport.
UB1
TEMPERATURE LIMITER (FQ10)
UB2 The temperature limiter (FQ10) 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 (FQ10) is accessible behind the front
cover. Reset the temperature limiter by carefully pressing
the button (FQ10-SF2) using a small screwdriver.
ACCESSIBILITY, ELECTRICAL CONNECTION
The plastic cap of the electrical boxes is opened using a
screwdriver.
NOTE
The cover for the input card is opened without a
tool.
NIBE F370