Daikin expands its AI data center portfolio with the new Coolant Distribution Unit

Reliability, serviceability and operational control

The new CDU has been designed to support the high availability requirements typically associated with modern data center environments. The system architecture incorporates features intended to enhance system resilience, including redundant pumps, duplicated pressure and temperature sensors, an integrated leak detection system, advanced alarm management functions and options supporting continuity of electrical supply. The hydraulic circuit is manufactured entirely from AISI 316L stainless steel and incorporates grooved mechanical couplings throughout, eliminating the need for welded joints. This design has been selected to provide corrosion resistance and to facilitate installation and maintenance activities throughout the equipment lifecycle. Particular attention has also been dedicated to serviceability. All units within the range are designed for front-side access only, reducing service clearance requirements. In addition, pumps can be removed using dedicated sliding rails designed to facilitate maintenance operations and support faster component replacement.

Daikin controller and group control logic

The CDU is equipped with a controller developed by Daikin for the coordinated management of multiple units operating within the same system. Through proprietary control logic, multiple CDUs can operate as an integrated solution, enabling centralized management of key operating parameters. To address the requirements of AI-oriented data centers, where thermal loads may vary rapidly, the CDU combines variable-speed pumps, high-accuracy flow, pressure and temperature measurements, and dynamic adjustment of TCS operating parameters. This control approach is designed to support stable operating conditions across a wide range of load profiles. A key element of the solution is a modulating valve dedicated to the FWS primary circuit, featuring an equal-percentage control characteristic and a high-speed actuator. The valve is designed to regulate thermal energy exchange between the FWS and TCS circuits and to support control of the TCS outlet temperature according to the configured operating parameters.

iDCM evolves from chilled water plant control to full data hall management

With the introduction of the new CDU, Daikin further expands its data center offering through the evolution of the iDCM (Intelligent Data Center Manager) platform, extending its scope beyond traditional chilled water plant control. The platform is designed to monitor and coordinate a broader range of equipment deployed within the Data Hall, including CDUs, CRAHs, AHUs and Fan Wall systems, providing operators with a centralized view of cooling infrastructure operating conditions. Through a single interface, iDCM enables visualization of temperatures, unit status and alarms in real time, while also providing access to selected operating parameters and supporting diagnostic and troubleshooting activities. The platform can also be integrated with existing Building Management Systems (BMS), facilitating coordinated management of the cooling infrastructure within the broader facility control environment.