Gree Ultra Heat GMV-V72W/A-F, Service Manual

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Ultra Heat GMV VRF Technical Service Manual REMOTE CONTROL
203
Network 3 (IF you don
’t choose billing function, electric meter cannot be connected and network is
followed):
L1: L1 as shown in the figure is the CAN1 bus, which is made up of indoor units and outdoor units in
the system; one system includes 4 outdoor units and 80 indoor units in maximum. Total length of L1
cannot exceed 500m.
L2: L2 as shown in the figure is the CAN2 bus, which is made up of gateways and master control
outdoor units in the system; total length of L2 cannot exceed 500m; outdoor unit quantity in L2 cannot
exceed 16 (not including slave modules).
L3: RS485 bus, for communication between electric meter and gateway; total length of L3 cannot
exceed 500m; the quantity of electric meter connected in L3 cannot exceed 32.
L4: L4 as shown in the figure is the standard Ethernet connection wire; if the length of each cable