iZone C325H Hitachi & Emerald Air-Conditioner Interface Module
The iZone C325H is a communication interface designed to connect an iZone C225 control system with compatible Hitachi and selected Emerald 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 Hitachi and Emerald systems with the iZone C225 CPU
Controls system on/off, operating mode, set temperature and fan speed
Supports selected R410A and R32 ducted systems
Supports return-air, zone, master and RF temperature-sensor control
Suitable for compatible mid-static and high-static ducted units
App control available when connected to an iZone Smart Hub
Communication wiring is non-polarised
Hitachi Compatibility
| System type | Indoor model | Outdoor model |
|---|
| R410A ducted | RPI###1SQ series | Model dependent |
| R410A ducted | RPI###2SQ series | Model dependent |
| R32 mid-static | PPIM-4.0UFA1NQ | PAS-4.0UFASNQ1 |
| R32 mid-static | PPIM-5.0UFA1NQ | PAS-5.0UFASNQ1 |
| R32 mid-static | PPIM-6.0UFA1NQ | PAS-6.0UFASNQ1 |
| R32 high-static | PPIH-4.0UFA1NQ | PAS-4.0UFASMQ1 |
| R32 high-static | PPIH-5.0UFA1NQ | PAS-5.0UFASMQ1 |
| R32 high-static | PPIH-6.0UFA1NQ | PAS-6.0UFASMQ1 |
| R32 high-static | PPIH-6.5UFA1NQ | PAS-6.5UFASMQ1 |
Emerald Compatibility
| System | Indoor model | Outdoor model |
|---|
| R32 high/medium-static ducted, 16 kW | ACR160D | ACR160U |
| R32 high/medium-static ducted, 20 kW | ACV200D | ACV200U |
These Emerald systems use the same communication method and wiring arrangement as compatible Hitachi systems.
Connection Requirements
Connects to the indoor unit’s A/B communication terminals
Emerald connection: TB2 terminals A and B
Polarity is not critical
Requires shielded two-core twisted-pair control cable
Earth or shield must be terminated at the fan-coil end
Communication cable is supplied by the installer
Important Installation Information
Do not apply external voltage to the A/B communication cable. The C325H is a communications interface and must only be connected to the specified low-voltage control terminals.
Always confirm the complete indoor and outdoor model numbers before ordering.
Sources: iZone Hitachi compatibility and iZone Emerald compatibility