Settings; Optional Connections - Nibe F370 Installer Manual

Settings

BT30
AA1-X3
AA1-SF2
AA1-X7
ELECTRICAL ADDITION - MAXIMUM OUTPUT
The immersion heater output is divided into steps, according
to the table.
Setting maximum output in the electric additional heat is
done in menu 5.1.12.
When switching from 3x400 V to 1x230 V, the immersion
heater must be limited to 2 kW. Min. fuse rating 16 A.
Power steps of the immersion heater
Electrical addi- Max (A) L1
tion (kW)
0.0 5.3
2.0 5.3
4.7 5.3
1
5.6 5.3
8.0 16.9
10.3 16.9
1
Factory setting
The table displays the maximum phase current for the relev-
ant power step for the heat pump.
If the current sensors are connected, the heat pump monit-
ors the phase currents and allocates the electrical steps
automatically to the least loaded phase.
EMERGENCY MODE
When the heat pump is set to emergency mode (SF1 is set
to ), only the most necessary functions are activated.
• The compressor is off and heating is managed by the im-
mersion heater.
• The load monitor is not connected.
Power in emergency mode
The immersion heater's output in emergency mode is set
with the dipswitch (S2) on the immersion heater circuit board
(AA1) according to the table below.
26 Chapter 5 | Electrical connections
Max (A) L2 Max (A) L3
- -
- 8.7
11.6 8.7
11.6 11.6
11.6 11.6
12.7 20.3
kW 1 2
2.0 off off
4.7 off off
5.3 off off
1
8.0 on off
10.3 on off
1
Factory setting
The image shows the dip-switch (AA1-S2) in the factory
setting.

Optional connections

LOAD MONITOR
Integrated load monitor
F370 is equipped with a simple form of integrated load
monitor, which limits the power steps for the electric addi-
tional heat by calculating whether future power steps can
be connected to the relevant phase without exceeding the
current for 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 - "internal electrical addition".
Load monitor with current sensor
When many power-consuming products are connected in
the property at the same time as the compressor and/or
the electric additional heat is operating, there is a risk of the
property's main fuses tripping.
F370 is equipped with a load monitor that, with the help of
a current sensor, controls the power steps for the electric
additional heat by redistributing the power between the
different phases or, alternatively, disengages the electric
additional heat step-by-step if there is an overload in a
phase.
Reconnection occurs when the other current consumption
is reduced.
Connection and activation of current sensors
1. Install a current sensor on each incoming phase conduct-
or into the electrical distribution unit. This is best done
in the electrical distribution unit.
3 4 5 6
off off off on
off off on on
on on on off
on off on off
on on on on
NIBE F370