Midea MV8M-120WV2RN1 Engineering Data page 93

Notes for installers
The 380-415V, 3N~, 50Hz power supply should be connected to the outdoor unit power supply terminals as shown in
Figure 3-8.2. Use round-type terminals of the correct specifications to connect the power cable.
8.3 Communication Wiring
Communication wiring design and installation should adhere to the following requirements:
 Do not connect the communication line when the power is on.
 Connect the shielding nets at both ends of the shielded wire to the sheet metal "
 Do not connect the power cable to the terminal of communication line, otherwise, the motherboard will be damaged.
 Do not connect a system with both HyperLink (M1 M2) communication lines and P Q communication lines.
 On-site wiring must comply with the relevant regulations of the local Country/region and must be completed by
professionals.
 The communication lines of the indoor and ODUs can only be connected from the outdoor unit.
 When a single communication line is not long enough, the joint must be crimped or soldered, and the copper wire at
the joint shall not be exposed.
 When use HyperLink, It is forbidden to reverse the connection of the two communication ports (to up IDU) and (to
down IDU) of the repeater.
 V8 Mini outdoor unit compatible with different generation indoor units, the communication connection type should
follow table 3-8.1.
Figure 3-8.1: Indoor unit unified power supply wiring
Single-phase 220~ 50/60Hz
Leakage protector
Manual switch
1 2
9 10

Figure 3-8.2: Outdoor unit 3-phase power supply terminals
Branch box
3 4 5 6 7
Indoor unit
1 1 12 13 14
15
V8 Mini R410A VRF 50Hz
8
16
" of the electronic control box.
91