Nibe SMO 40 Installer Manual page 23

COMMUNICATION WITH HEAT PUMP
Connect the heat pump (EB101) with a screened three
core cable to terminal block X4:1 (A), X4:2 (B) and X4:3
(GND) on the accessory board (AA5) as illustrated.
If several heat pumps are to be connected to SMO 40
these must be connected in cascade as illustrated.
Caution
Up to 8 heat pumps can be controlled by
SMO 40.
Caution
It is possible to combine various NIBE air/water
heat pumps, of different sizes and models, with
each other, effective from software version
8319.
With an earlier software version (than version
8319), an air/water heat pump with an inverter-
controlled compressor can only be combined
with other inverter-controlled heat pumps of
the same model.
Connecting to the heat pump
AA5-X4
-X8
8 7 6 5 4 3 2 1
-X4
-X2
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
L N
5
4
3
2
1
-X1 -X9
-X10
PE PE L N 1 2 3 4 5 6 7 8 9
1 2
LEK
NIBE SMO 40
1 2 3
1 1 0 PE 2 3 4
4
Chapter 5 | Electrical connections 23