Nimbus Compact M NET R32 Installation Manual UK
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5.3 Example of electrical connection between indoor and outdoor units<br />
Electrical connections<br />
Before carrying out any work on the system, shut off the power supply at the main switch.<br />
The electrical connection between the indoor and outdoor units must be made using the two low-voltage terminal boards: G and<br />
S.<br />
Connect “G” on the indoor unit terminal board with “G” on the outdoor unit terminal board.<br />
Connect “S” on the indoor unit terminal board with “S” on the outdoor unit terminal board.<br />
1 ph 3 ph<br />
1 ph 3 ph<br />
T<br />
T<br />
T<br />
T<br />
ON<br />
ON<br />
ON<br />
ON<br />
OFF<br />
30mA<br />
N<br />
XXA<br />
N<br />
XXA<br />
N<br />
OFF<br />
30mA<br />
N<br />
N<br />
XXA<br />
XXA<br />
N<br />
OFF<br />
30mA<br />
N<br />
XXA<br />
N<br />
XXA<br />
N<br />
OFF<br />
30mA<br />
N<br />
N<br />
XXA<br />
XXA<br />
N<br />
S<br />
G<br />
ATGBUS<br />
G<br />
S<br />
EBUS2<br />
... SE TNK<br />
B<br />
T<br />
Fig. 67<br />
1 ph Single-phase power supply (depending on the model)<br />
3 ph Three-phase power supply (depending on the model)<br />
Once you have completed the connections between the indoor and outdoor units, put both electrical panels<br />
back into place.<br />
a<br />
a<br />
Keep the high- and low-voltage cables separate.<br />
40 / EN
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