Nibe MODBUS 40 Installateurhandbuch Seite 11

Installation
NOTE
All electrical connections must be carried out
by an authorised electrician.
Electrical installation and wiring must be car-
ried out in accordance with the stipulations in
force.
The heat pump/indoor module must not be
powered when installing MODBUS 40.
The wiring diagram is at the end of these installation
instructions.
Connecting to the heat pump/indoor
module
NOTE
If there is RMU 40 / SMS 40 in the unit, it must
be connected to terminal block X1 on the
Modbus-card (AA9).
Ground-source heat pumps
Terminal block X1 on the Modbus- card (AA9) in
MODBUS 40 is connected to X4:9-12 on the input card
(AA3) in the heat pump/indoor module.
Use cable type LiYY, EKKX or similar.
F1145/F1155
AA3-X4
F1245/F1255
AA3-X4
7 8 9 10 11 12
12V A B GND
AA3-X4
12
7 8 9 10 11
F1245/F1255
MODBUS 40
AA9-X1
12V A B GND
GB
11