INSTALLATION INSTRUCTIONS
Electric Wiring and Applications Cont.
Communication Wiring Figure
Outdoor 1
P Q A B C
When the outdoor unit is combined, and the sub machine is connected with the main machine through the communication
terminal of the A/B/C.
NOTE: If the system unit adopts Zigbee wireless communication, it must adopt wireless and wired hybrid mode, that is,
wired communication between the host outdoor unit and the first valve box, wireless communication between the valve
box and the connected indoor units. Wired communication is used between the valve box and the valve box and between
the valve box and the single cold indoor units (the indoor units not connected to the valve box).
Communication Wiring Figure (Wireless Indoors Units)
Indoor 1
CN4
P Q
IGU10
49-5000878 Rev. 0
Outdoor 2
P Q A B C
Indoor 2
Indoor 3
CN4
CN4
P Q
IGU10
IGU10
Outdoor 3
P Q A B C
Indoor 4
CN4
P Q
P Q
IGU10
Indoor n
CN4
P Q
IGU10
33