iZone C325G Gree Air-Conditioner Interface Module
The iZone C325G is a communication interface designed to connect an iZone C225 control system with selected Gree ducted air conditioners. It enables integrated control of the air conditioner through the iZone touchscreen and mobile app when a Smart Hub is installed.
Key Features
Integrates compatible Gree systems with the iZone C225 CPU
Controls system on/off, operating mode, set temperature and fan speed
Supports selected Gree R410A and R32 ducted systems
Allows the air conditioner and zone dampers to be operated from one iZone interface
App control available when connected to an iZone Smart Hub
Includes a short connection lead for extension to the indoor unit
Compatibility
| System type | Indoor model pattern | Outdoor model pattern |
|---|
| Single-phase R410A ducted | GUD###PHS/B-S | GUD###W/NHB-S |
| American-design R32 ducted | GUD###PHS1/C-S | GUD###W1/NHC-S |
Important: Gree has used similar model numbers across different product generations. Some R32 systems require the C325G2 or C325G3 instead. Always confirm the complete indoor and outdoor model numbers before ordering.
Temperature Control
The C325G operates using the air conditioner’s return-air sensor only.
It does not support the following as the controlling temperature sensor:
iZone zone sensors
Master controller sensor
RF temperature sensors
Connection Requirements
Connects to the appropriate communication terminal on the Gree indoor PCB
Connection polarity is critical
Requires shielded two-core twisted-pair cable
The supplied short connection lead must be extended to the iZone controller
Compatible R410A systems require the Gree proprietary wired controller for initial setup
Installation Requirements
Before connecting iZone, the Gree wired controller must be used to configure:
Return-air sensing for all operating modes
iZone external-control setting
Required indoor-fan static-pressure setting
Incorrect module selection or reversed communication wiring may prevent operation or damage the control equipment.
Source: iZone Gree compatibility documentation
