iZONE 325 MHI AC UNIT MODULE

iZone C325MHI2 Mitsubishi Heavy Industries Air-Conditioner Interface Module

The iZone C325MHI2 is a communication interface designed to connect an iZone C225 control system with compatible Mitsubishi Heavy Industries ducted air conditioners. It enables integrated air-conditioning and zoning control through the iZone touchscreen, temperature sensors and mobile app when a Smart Hub is installed.

Key Features

• Integrates compatible MHI systems with the iZone C225 CPU

• Controls system on/off, operating mode, set temperature and fan speed

• Supports return-air, zone, master and RF temperature-sensor control

• Suitable for selected single-phase and three-phase ducted systems

• Connects through the indoor unit’s X/Y remote-controller circuit

• Communication polarity is not critical

• App control available when connected to an iZone Smart Hub

Compatibility

Newer MHI VRF installations may require the C325MHI3. Always confirm the complete indoor and outdoor model numbers before ordering.

Connection Requirements

• Connects to the MHI indoor unit’s X/Y remote-controller terminals

• Polarity is not critical

• Requires shielded two-core twisted-pair control cable

• Communication cable is supplied by the installer

• Connect the X/Y control wire to the AC Unit Control Cable connection on the C225/C325MHI2

Important Installation Information

• The MHI proprietary controller and iZone controller cannot be connected to the indoor PCB simultaneously

• Master/slave controller operation is not available with iZone on MHI systems

• The MHI controller may be required during commissioning to configure the indoor unit’s static pressure

• iZone recommends checking the static-pressure setting before removing the MHI controller and connecting the C325MHI2

Always commission the air conditioner with the MHI controller before completing the iZone connection.

Source: iZone Mitsubishi Heavy Industries compatibility documentation