Nibe ERS 20-250 Installer Manual page 14

S-SERIES
The communication cable (W102) in ERS 20 must be
connected to the main product.
Main product
AA2-X30
1 2 3 4
ERS 20
AA5-X4
A
1
2 B
3 GND
4
5
6
7
8
If more ERS 20 are to be installed, they must be connec-
ted in series as illustrated:
Main product
AA2-X30
1 2 3 4
ERS 20 1
AA5-X4
A
1
B
2
3 GND
4 A
5 B
6 GND
7
8
ERS 20 2
AA5-X4
1 A
2 B
3 GND
A
4
B
5
GND
6
7
8
14 Chapter 5 | Electrical connection
F-SERIES
The communication cable (W102) in ERS 20 must be
connected to the main product.
Main product
AA3-X4
A (white)
A (vit)
15
B (brown)
B (brun)
14
GND (green)
GND (grön)
13
ERS 20
AA5-X4
A (white)
A (vit)
1
B (brown)
B (brun)
2
GND (green)
GND (grön)
3
4
5
6
7
8
If more accessories are installed, they must be connec-
ted in series, as illustrated:
Main product
AA3-X4
A
15
B
14
GND
13
Accessories 1
AA5-X4
A
1
B
2
GND
3
A (white)
A (vit)
4
B (brown)
B (brun)
5
GND (green)
GND (grön)
6
7
8
ERS 20
AA5-X4
A (white)
A (vit)
1
B (brown)
B (brun)
2
GND (green)
GND (grön)
3
4
5
6
7
8
TIP
See the main product's Installer Manual for the
placing of the input board.
NIBE ERS 20-250