Gree LSQWRF35VM/NaA-M - Networking and Wiring between Units

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7.5 Networking and Wiring between Units
Notes
(1)CN25 and C47 of each unit should be connected through the three-core grounded
communication line with the shielding layer. The ground wire of the communication
lien should be grounded reliably as shown in the figure above.
A Series Inverter Modular Air-cooled Chiller (Heat Pump)