Nibe S1155PC Installer Manual page 25

Power steps of the immersion heater
The tables display the total phase current for the immer-
sion heater at start up. If an immersion heater has
already been started, and is not being used to its full
capacity, the values in the table can be changed because
the control initially uses this immersion heater.
3x400 V
Max electric- Max phase
al addition current L1(A)
(kW)
0.0 –
0.5 2.2
1.0 –
1.5 2.2
2.0 –
2.5 2.2
3.0 –
3.5 2.2
4.0 –
4.5 2.2
5.0 –
5.5 2.2
6.0 –
1
6.5 2.2
1
Factory setting
1x230 V
Max electric- Max phase current L1(A)
al addition
(kW)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5 1
1
Factory setting
If the current sensors are connected, S1155PC monitors
the phase currents and allocates the power steps auto-
matically to the least loaded phase.
NOTE
If the current sensors are not connected,
S1155PC 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.
NIBE S1155PC
Max phase Max phase
current L2(A) current
L3(A)
– –
– –
4.3 –
4.3 –
– 8.7
– 8.7
4.3 8.7
4.3 8.7
11.5 7.5
11.5 7.5
7.5 15.6
7.5 15.6
11.5 15.6
11.5 15.6
–
2.2
4.3
6.5
8.7
10.9
13.0
15.2
17.4
19.6
EMERGENCY MODE
When S1155PC is put into emergency mode, the system
works as follows:
• S1155PC prioritises heating production.
• Hot water is produced if possible.
• The load monitor is not connected.
• 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 sensor (BT1).
You can activate the emergency mode both when
S1155PC is running and when it is switched off.
When the emergency mode is active, the status lamp
turns yellow.
To activate when S1155PC is running: press and hold
the on/off button (SF1) for 2 seconds and select "emer-
gency mode" from the shutdown menu.
To activate when S1155PC is switched off: press and
hold the on/off button (SF1) for 5 seconds. (Deactivate
the emergency mode by pressing once.)
Chapter 5 | Electrical connections 25