Nibe S2125, Installer Manual, Page: 28 / 64

Connection to indoor module/control module
S2125 communicates with NIBE indoor modules/control
modules via a screened three-core cable (max area 0.75
mm²) to terminal block X22:1–4.
For connection in the indoor module/control module:
See the Installer Manual for the indoor module/control
module.
VVM S
Inomhusmodul
F2120
3
2
1
4
GND
GND
A
A
B
B
3
2
1
4
AA2:X23
AA2:X22
+
1
2
V
G
N
D
B A
2 3 4 1
AA2-X30
S2125
Indoor module
VVM
Inomhusmodul
F2120
AA3-X4
3
2
1
4
GND
GND
A
A
B
GND
A
B
B
3
2
1
4
14
13
12
11
10
15
AA2:X23
AA2:X22
S2125
Indoor module
SMO 20
GND
A
B
3
2
1
4
F2120
X22
X2
SMO
B
GND
A 19
20
21
S2125
Control
module
NIBE S2125 Chapter 5 | Electrical connections 28