Midea V5 X VRF Series - Field Wiring; Signal Wire between Outdoor Unit and Indoor Unit

MCAC-VTSM-2015-10 R410A All DC Inverter V5 X Series 50Hz
Specifications & Performances 31
5.2 Field wiring
5.2.1 Signal wire between outdoor unit and indoor unit
Signal wire of indoor/outdoor unit adopts 3-core shielded wire (≥0.75mm
2
) which has polarity, please connect
it correctly.
5.2.2 Example wiring connection
(P Q E)
(P Q E)
(H1 H2 E) (H1 H2 E) (H1 H2 E)
To closed end of shield wire
(open)
Group control
The indoor unit at the terminal of communication system should
parallel connect a resistor between portP and port Q.
P
Q
matching
resistor
All sheild terminals of shield wires should be
connected to communication terminal
Master unit Slave unit Slave unit Slave unit