Centralised Load Control And Load Monitor - Nibe FIGHTER 1120 Installation And Maintenance Instructions Manual

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Centralised load control and load monitor

Load monitor
NOTE! No function in a 1-phase installation.
When many power consumers are connected in the
property at the same time as the immersion heater is
operating, there is a risk of the property's main fuse
tripping. The heat pump is equipped with an integrat-
ed load monitor that controls the electrical steps on
the immersion heater.
When the phase current is so high that there is a risk
of the main fuses tripping, the load monitor reduces
the immersion heater output until the risk of the main
fuses tripping has passed. When the general power
consumption drops, the immersion heater will be con-
nected again.
A current transformer should be installed on each
incoming phase conductor in to the distribution box to
measure the current. The distribution box is an appro-
priate installation point.
Connect the current transformers to a multi-core
cable in an enclosure next to the distribution box. Use
unscreened multi-core cable of at least 0.50 mm
from the enclosure to the heat pump.
The cable is connected in the heat pump to the EBV-
card on terminals X1:8 - X1:11. X1:11 is the common
terminal block for the three current transformers.
The size of the property's main fuse is set using the
knob (100) on the EBV-card. The setting can be
checked in the menu 8.3.4.
Incoming electricity
PEN L L
1 2
To heat pump
Centralised load control/Tariff
In those cases centralised load control or tariff control
is used this can be connected to the terminal block X1
on the load monitor card (2), which is positioned
behind the upper service cover.
Tariff A, the whole electrical output is disconnected.
Connect a potential free contact function to terminals
X1:5 and X1:7.
Tariff B, the compressor is disconnected. Connect a
potential free contact function to terminals X1:6 and
X1:7.
Tariff A and Tariff B can be combined.
A made contact results in the electrical output being
disconnected.
Electrical connection
Electrical
L
3
distribution unit
X1
100
2
2 ,
FIGHTER 1120