Midea VC Pro Series

VC Pro VRF 50/60Hz
184
Midea VC Pro Series Engineering Data Book
×
Master
unit
Slave
unit
Slave
unit
H1 H2 E H1 H2 E
P Q E P Q E
P Q E
P Q E
P Q E
 Communication wiring for a single outdoor unit system
Figure 3-9.6: Communication wiring for a single outdoor unit system
The communication wires should be connected to the master outdoor unit terminals indicated in Figure 3-9.5 and Table
3-9.1.
Caution
 Communication wiring has polarity. Care should be taken to connect the poles correctly.
Figure 3-9.5: Master outdoor unit communication terminals
Table 3-9.1: Communication connections
Terminals
Connection
O A
Connect to digital energy meter
X Y
Connect to centralized controller
P Q
Connect between indoor units and master outdoor unit
H1 H2
Connect between outdoor units
Notes for installers

IDU
IDU
IDU
P
Q
E
P
Q
E
P
Q
E
ODU
H
1
H
2
E
P
Q
E