Communication Of The System - Gree GMV-Pdhm224W/Na-M Installation And Operating Instruction Manual

Communication of the System

Ⅰ. Communication system of GREE Heat Recovery D.C Inverter Multi-VRF includes:
1. Communication between the indoor unit and the outdoor unit;
2. Communication among the indoor units
3. Communication among the outdoor units( in modules combination)
4. Communication among pinboards of outdoor units( when increasing pinboards is needed.)
Ⅱ.The communication way of GREE Heat Recovery D.C Inverter Multi-VRF includes:
1. All of the communication ways are 485 communication
2 Indoor units network: Dual-core twisted pair lines whose ends are three-pin XH plug are applied in the
communication between outdoor units-indoor units/ indoor units-indoor units.
3. Outdoor units network: Dual-core twisted pair lines whose ends are four-pin XH plug applied in
communication between module to module.
Ⅲ. Traits of communication for Heat Recovery D.C Inverter Multi-VRF
1. Communications among modules are by the mainboards connection inside modules
2. A communication pinboard is equipped in each module which can communicate with max, 16 indoor units
simultaneously.