iZone C325SN Samsung NASA Air-Conditioner Interface Module
The iZone C325SN is a communication interface designed to connect an iZone C225 control system with compatible Samsung NASA-protocol 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 Samsung NASA 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
Compatible with selected R410A and R32 Samsung ducted systems
Allows air-conditioning and zone operation from one iZone interface
App control available when connected to an iZone Smart Hub
Compatibility
| Refrigerant | Capacity range | Indoor model pattern |
|---|
| R410A | 16–20 kW | AC###JNHFKH/SA |
| R32 | 5–16 kW | AC###TNHPKG/SA |
The C325SN is intended for Samsung units using the NASA communication protocol. Older AC###HBHFKH/SA high-static systems require the C325S module.
Connection Requirements
Connects to the indoor unit’s F3/F4 communication terminals
Wiring polarity is critical
Requires shielded two-core twisted-pair control cable
Communication cable is supplied by the installer
Connect the F3/F4 wiring to the AC Unit Control Cable connection on the C225/C325SN
Important Installation Information
Ensure the F3 and F4 conductors are correctly matched at the indoor unit and iZone interface. Reversed polarity may prevent communication or damage the control equipment.
Always confirm the complete indoor and outdoor model numbers before ordering.
Source: iZone Samsung compatibility documentation
