Settings
ELECTRICAL ADDITION - MAXIMUM OUTPUT
The immersion heater is set at the factory to max power.
The immersion heater’s power is set in menu 7.1.5.1 - "Int
elec add heat".
Power steps of the immersion heater
The table(s) displays the total phase current for the immer-
sion heater.
3x400 V (maximum electrical power,
connected on delivery 9 kW)
Max L3 (A)Max L2 (A)Max L1 (A)Electrical ad-
dition (kW)
0.00.00.00
0.08.70.02
7.57.50.03
8.78.70.04
7.57.58.75
8.78.78.76
15.67.58.77
15.615.68.79
1
1
Factory setting
3x400 V (maximum electrical power,switched
to 7 kW)
Max L3 (A)Max L2 (A)Max L1 (A)Electrical ad-
dition (kW)
0.00.00.00
4.30.00.01
0.08.70.02
4.38.70.03
8.78.70.04
13.00.08.75
8.78.78.76
13.08.78.77
3x230 V (maximum electrical power,
connected on delivery 9 kW)
Max (A) L3Max (A) L2Max (A) L1Electrical ad-
dition (kW)
0.00.00.00
0.08.78.72
8.78.715.14
8.717.423.06
19.026.423.09
1
1
Factory setting
1x230 V (maximum electrical power,
connected on delivery 7 kW)
Max L1 (A)Electrical addition (kW)
0.00
4.31
8.72
13.03
17.44
21.75
26.16
30.47
1
1
Factory setting
When the current sensors are connected, VVM S320 monit-
ors the phase currents and allocates the power steps auto-
matically to the least loaded phase.
NOTE
If the current sensors are not connected,
VVM S320 calculates how high the currents will
be if the relevant power steps are added. If the
currents are higher than the set fuse size, the
power step is not allowed to cut in.
EMERGENCY MODE
Emergency mode is used in event of operational interference
and in conjunction with service.
When VVM S320 is put into emergency mode, the system
works as follows:
• VVM S320 prioritises heating production.
• Hot water is produced if possible.
• The load monitor is not active.
• The immersion heater is stepped according to the setting
in menu 7.1.8.2 - Emergency mode.
• Fixed supply temperature if the system has no value from
the outdoor temperature sensor (BT1).
You can activate the emergency mode both when VVM S320
is running and when it is switched off.
When the emergency mode is active, the status lamp is yel-
low.
To activate when VVM S320 is running: press and hold the
on/off button (SF1) for 2 seconds and select "emergency
mode" from the shutdown menu.
To activate emergency mode when VVM S320 is switched
off: press and hold the on/off button (SF1) for 5 seconds.
(Deactivate the emergency mode by pressing once.)
27Chapter 5 | Electrical connectionsNIBE VVM S320
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