3 Product Description
3.1 General
This document describes the performance, possible configurations, application and specification of the CoolChip CDU 600..
The CDU 600 contains a secondary closed loop circuit that provides a supply of cooling fluid to equipment based on
differential pressure., either through indirect cooling (rack mounted rear door heat exchangers) or direct cooling (cold plates
at chip level).
The secondary circuit is a low pressure sealed system with the heat removed from the high heat density areas of IT
equipment rejected to an external cooled fluid source (primary circuit) via a low pressure drop plate heat exchanger.
The secondary circuit ensures that the cooling fluid in the secondary network can be kept to a minimum volume, is closely
controlled for flow, pressure, and temperature (with condensation control) and can be accurately maintained for fluid quality
(with filtration and additives).
The primary cooling source can be a chilled water system (either dedicated or from building system), fluid cooler, cooling
tower or dry air cooler, depending on the desired secondary temperature and heat transfer duty. Refer to the Primary
(Facility) Circuit and Secondary Circuit in SL-07624 CoolChip CDU 600 Application and Planning Guide.
3 Product Description Proprietary and Confidential ©2025 Vertiv Group Corp. 11
Vertiv™ CoolChip CDU 600 Operation and Maintenance Guide
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