Optional Connections; Load Monitor; Connecting Current Sensors - Nibe F1245 Installer Manual

1x230V
1 2
1 kW off off
2 kW off off
3 kW off off
4 kW off off
5 kW on off
6 kW on off
7 kW on off
3x400V/1x230V
The image shows the dip-switch (AA1-SF2) in the factory
setting, that is 6 kW.
Emergency mode thermostat
The supply temperature is set in emergency mode using
a thermostat (FD1-BT30). It can be set to 35 (pre-set, for
example underfloor heating) or 45 °C (for example radi-
ators).
NIBE™ F1245
3 4 5
off off off
on off off
on off off
on off on
on off off
on off on
on off on
3x230V
K
L E

Optional connections

6

Load monitor

on
off
NOTE
on
The load monitor has no function in a 1-phase
off
installation.
on
off
on
When many power consumers are connected in the
property at the same time as the electric addition is oper-
ating, there is a risk of the property's main fuse tripping.
The heat pump has integrated load monitors that control
the electrical steps for the electrical addition by redistrib-
uting the power between the different phases or disen-
gaging. Reconnection occurs when other current con-
sumption is reduced.

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 next to the distribution box. Use a multi-core
cable of at least 0.5 mm2 from the enclosure to the heat
pump.
Connect the cable to the input card (AA3) on terminal
block X4:1-4 where X4:1 is the common terminal block
for the three current sensors.
The size of the property's main fuse is set in menu 5.1.12.
Inkommande el
PEN L L
1
Elcentral
Värmepump
L
2 3
Chapter 5 | Electrical connections 23