Control connections link the LG AC Smart stand-alone control system to VRV condensing units via PI485 and Ethernet CAT 5e cables. The system routes 24VAC and 18/2 shielded wires to control units, extending communication lines between indoor units, heat recovery units, and fan coil units across multiple floors in a daisy-chain configuration. An I/O module integrates variable frequency drives and fire safety control points into the overall network architecture.
B IDU A PI485 PI485 VRV CU-X PI485 B IDU A VRV CU-X CAT 5e ETHERNET 18/2 Shielded wires CE E 24VAC 18/2 Shielded wires CE B IDU A VRV CU-X VRV HRU-X COM 5A 6B COM 5A 6B VRV HRU-X COM 5A 6B INSIDE BLDG. VRV HRU-X COM 5A 6B TO VRV CU & VRV FCU IN CHAIN VRV HRU-X COM 5A 6B LG AC SMART I/O MODULE SF-2 VFD PE-1 FSC TO SECOND FLOOR VRV HRU & VRV FCU IN CHAIN TO THIRD FLOOR VRV HRU & VRV FCU IN CHAIN TO FIRST FLOOR VRV HRU & VRV FCU IN CHAIN (STAND ALONE CONTROL SYSTEM)
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