NIBE FIGHTER 1250
FIGHTER 1250 must be installed via an isolator switch with
a minimum breaking gap of 3 mm.
Incoming electricity is connected on terminal block (9) via
cable gland (99).
Other electrical equipment, except the outdoor sensors and
the current transformers are ready connected at the fac-
tory.
Disconnect the heat pump before insulation testing the
house wiring.
If a miniature circuit breaker is used this should have
motor characteristic “D” (compressor operation).
For fuse ratings, see technical data, “Fuse protection”.
When the building is equipped with an earth-fault
breaker the heat pump should be equipped with a
separate one.
Connection must not be carried out without the per-
mission of the electricity supplier and under the supervi-
sion of a qualifi ed electrician.
1
Miniature circuit-breaker
The automatic heating control system, circulation pumps
and their wiring, are internally fuse protected with a mini-
ature circuit breaker (1).
Temperature limiter
The temperature limiter (25) cuts the current supply to the
electrical addition if the temperature rises up between 90
and 100 °C and can be manually reset.
Resetting
The temperature limiter (25) is accessible behind the front
cover. The temperature limiter is reset by fi rmly pressing in
its button.
8
25
Electrical connections
B
Reset the temperature limiter, it may have
tripped during transport.
The switch (8) must not be moved from “1”
or “ ” until the boiler has been filled with
water. Otherwise the temperature limiter,
thermostat, compressor and the immersion
heater can be damaged.
Electrical installation and service must be car-
ried out under the supervision of a qualified
electrician. Electrical installation and wiring
must be carried out in accordance with the
stipulations in force.
Electrical connections
99
9
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