Nibe S1256 - Page 28

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, S1256-8
Max phase
current L3(A)
Maxphasecur-
rent L2(A)
Maxphase cur-
rent L1(A)
Max electrical
addition (kW)
–––0.0
––2.20.5
–4.3–1.0
–4.32.21.5
8.7––2.0
8.7–2.22.5
8.74.3–3.0
8.74.32.23.5
7.511.5–4.0
7.511.52.24.5
15.67.5–5.0
15.67.52.25.5
15.611.5–6.0
15.611.52.26.5
1
1
Factory setting
3x400 V
Max phase
current L3(A)
Maxphase cur-
rent L2(A)
Maxphase cur-
rent L1(A)
Max electrical
addition (kW)
–––0
4.3––1
–8.7–2
4.38.7–3
8.78.7–4
13.08.7–5
8.78.78.76
13.08.78.77
1
1
Factory setting
3x230 V, S1256-8
Max phase
current L3(A)
Maxphase cur-
rent L2(A)
Maxphase cur-
rent L1(A)
Max electrical
addition (kW)
–––0.0
2.22.2–0.5
4.34.3–1.0
6.56.5–1.5
8.78.7–2.0
10.910.9–2.5
11.54.38.73.0
13.26.58.73.5
15.18.78.74.0
17.010.98.74.5
1
1
Factory setting
3x230 V, S1256-13
Max phase
current L3(A)
Maxphase cur-
rent L2(A)
Maxphase cur-
rent L1(A)
Max electrical
addition (kW)
–––0
8.78.7–2
15.18.78.74
15.115.115.16
27.227.215.19
1
1
Factory setting
1x230 V S1256-8
Max phase current L1(A)Max electrical
addition (kW)
–0.0
2.20.5
4.31.0
6.51.5
8.72.0
10.92.5
13.03.0
15.23.5
17.44.0
19.64.5
1
1
Factory setting
1x230 V, S1256-13
Max phase current L1(A)Max electrical
addition (kW)
–0.0
4.31.0
8.72.0
13.03.0
17.44.0
21.75.0
26.16.0
30.47.0
1
1
Factory setting
In addition to this, there is the current for compressor oper-
ation.
When the current sensors are connected, S1256 monitors
the phase currents and allocates the power steps automat-
ically to the least loaded phase.
NOTE
If the current sensors are not connected, S1256
calculates how high the currents will be if the rel-
evant power steps are added. If the currents are
higher than the set fuse size, the power step is not
allowed to cut in.
NIBE S1256Chapter 5 | Electrical connections28