This article applies to the CoolMaster EDGEGREE GMV5/6 VRF – Indoor line connectionMaximum indoor per line: 64Supported device line number: L2No line polarity requiredCable type – Follow Gree's installation instructionsSet line type in the EDGE device to: GMV5Follow Gree's instruction on how to address the unitsEach system and Indoor must be set with unique address