What Is Liquid-to-Liquid CDU?_
This unit isolates the rack’s internal coolant loop from the building’s primary chilled-water or facility water loop, preventing contamination and allowing independent flow control. It typically contains plate heat exchangers, pumps, and valves to manage temperature and pressure. The CDU is a key interface between the rack-level cooling and the data center’s central cooling plant.
Technical Details
The CDU uses a plate heat exchanger to transfer heat between the two liquid loops without mixing them. It includes redundant pumps and temperature sensors to maintain coolant within OEM-specified ranges. Flow rates and pressure drops are set according to the rack’s thermal load and the facility loop’s capacity. The unit is often mounted at the bottom or top of the rack to minimize piping runs.
How Leviathan Systems Works with Liquid-to-Liquid CDU
The customer and OEM appoint qualified parties for the applicable cooling-system work and its acceptance. Leviathan does not install, connect, test, commission or maintain liquid systems. Any separately agreed physical IT installation or cabling work retains its own authorized scope and handoff.
Related service
Cooling Responsibility Guide →