Nibe FIGHTER 640P, Installation And Maintenance Instructions Manual, Page: 20 / 40

18 FIGHTER 640P
For the Installer
Connection
All electrical equipment except for the outdoor sensor has
been connected at the factory.
Disconnect the heat pump before insulation testing the
house wiring.
The supply to the heat pump is connected to terminal (9)
via a strain relief. FIGHTER 640P does not include an isola-
tor switch on the incoming electrical supply. The installa-
tion must be preceded by a circuit-breaker with at least a 3
mm breaking gap according to applicable norms.
Connection must not be carried out without the permis-
sion of the electricity supplier and under the supervision
of a qualified electrician. The cable entry conduit is dimen-
sioned for cable with a max Ø 19 mm.
The power is controlled via a contactor which is operated
by a microprocessor.
The temperature limiter (6) cuts off the supply to the im-
mersion heater if the temperature rises to between 90 and
100°C; it can be manually reset by pressing the button on
the temperature limiter.
The automatic heating control system, circulation pump
(16), compressor and its cabling, are internally fuse protect-
ed with a miniature circuit breaker (7).
Max phase current
Output
(kW)
Max load phase
(A)
Circuit fuse (A)
6,0 13,0 16
8,0 15,1 16
9,0 19,4 20
Immersion heater
The immersion heater of 9 kW is fitted in the boiler sec-
tion, and on delivery is connected for an output of 8.0 kW.
Changing the output
Ensure that the heat pump is disconnected from the •
power source.
Open the protective cover on the distribution box (see
•
section “Service”- “Opening the cover on the distribu-
tion box”).
Changing-over to 6 kW
Disconnect brown cable 045 from the relay card (29) •
terminal ”22” and insulate.
Changing-over to 9 kW
Connect white cable 019 to contactor (10) terminal •
”2”.
The switch (8) must not be moved from “0”
until the boiler has been filled. Otherwise
the temperature limiter, thermostat, com-
pressor and the immersion heater can be
damaged.
Note!
Electrical connections
Resetting the temperature limiter
The temperature limiter (6) is accessible behind the upper
service cover, see the figure.
The temperature limiter is reset by firmly pressing in the
rubber membrane.
Reset the temperature limiter, it may have
tripped during transport.
Note!
Electrical connections
Utan elpatron
29 9 10