Gree VRF User Manual

Gree VRF Protocol Gateway
13
5 Gateway and BMS adopt Modbus TCP or BACnet protocol
communication connecting method
Gateway communication system includes:
（1） Communication between gateway and BMS;
（2） Communication between gateway and air conditioner.
5.1 Selection of communication cable material
Communication
system
Type of
material
Communication
wire between
gateway and
air conditioner
L(m)
Cable
diamter
(mm²)
Material
standard
Remark
Communication
between gateway
and BMS via
network cable
10BMSE-T or
100BMSE-TX
interleaving
network cable
or
100BMSE-TX
parallel
network cable
L≤80 - -
 If the gateway directly
connects to PC, it needs
interleaving network cable.
 If the gateway connects to
PC via router, it adopts
parallel network cable.
Communication
between gateway
and air conditioner
Shielding
light/general
PVC sleeve
twisted pair
copper core
cord
L≤500 ≥2×0.75
IEC
60227-
5:2007
Total communication length
should not be over 500m
5.2 Communication Connection Method
（1） Communication connection between Gateway and BMS

Gree VRF Specifications

General

Brand	Gree
Model	VRF
Category	Gateway
Language	English