Gree ULTRA heating GMV5 Multi VRF Series Service Manual page 20

Ultra Heating GMV5 Multi VRF
for North America
2.2.3 Removal method
2.2.4 Connection of communication cord
There are 4 ways to connect wired controller with indoor units' network:
18
CONTROL
1 2
Fig.2.1.3 Removal of Wired Controller
Outdoor unit
D1 D2
Indoor unit
Fig. 2.2.4.1 One wired controller
controls one indoor unit
Outdoor unit
D1 D2
Indoor unit 1
Fig. 2.2.4.3 One wired controller controls multiple indoor units simultaneously
H H 1 2
H H 1 2
3
Outdoor unit
D1 D2
Indoor unit
Fig. 2.2.4.2 Two wired controllers
control one indoor unit
Indoor unit 2
4
Indoor unit 16