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Optional connections
LOAD MONITOR
Integrated load monitor
F1145PC is equipped with a simple form of integrated
load monitor, which limits the power steps for the
electric additional heat by calculating whether future
power steps can be connected to the relevant phase
without exceeding the specified main fuse. If the current
would exceed the specified main fuse, the power step
is not permitted. The size of the property's main fuse
is specified in menu 5.1.12.
Load monitor with current sensor
When many power-consuming products are connected
in the property at the same time as the electric additional
heat is operating, there is a risk that the property's main
fuse will trip. F1145PC is equipped with a load monitor
that, with the help of a current sensor, controls the
power steps for the electric additional heat by redistrib-
uting the power between the different phases or disen-
gages the electric additional heat if there is an overload
in a phase. Reconnection occurs when the other current
consumption drops.
Caution
Activate phase detection in menu 5.1.12 for
full functionality, if current sensors are installed.
Connecting current sensors
A current sensor should be installed on each incoming
phase conductor in to the distribution box to measure
the current. The distribution box is an appropriate install-
ation point.
Connect the current sensors to a multi-core cable in an
enclosure directly adjacent to the electrical distribution
unit. The multi-core cable between the enclosure and
F1145PC must have a cable area of at least 0.5 mm².
NIBE F1145PC
Connect the cable to the input board (AA3) on terminal
block X4:1-4 where X4:1 is the common terminal block
for the three current sensors.
Incoming electricity
PEN
L
L
L
1
2
3
Electrical distribution
unit
Heat pump
AA3-X4
CONNECTING EXTERNAL ENERGY METER
NOTE
Connection of external energy meter requires
version 35 or later on input board (AA3) as well
as "display version" 7113 or later.
One or two energy meters (BE6, BE7) are connected to
terminal block X22 and/or X23 on input board (AA3).
AA3-X22/23
Activate the energy meter(s) in menu 5.2.4 and then set
the desired value (energy per pulse) in menu 5.3.21.
NIBE UPLINK
Connect the network connected cable (straight, Cat.5e
UTP) with RJ45-contact (male) to RJ45 contact (female)
on the rear of the heat pump.
Chapter 5 | Electrical connections
4
-T3
-T3
3
2
-T2
-T2
1
-T1
-T1
1 2 3
AA3-X22/23
F1145PC
ProduktNamn
External
Externt
25
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