Liquid-to-Liquid Coolant Distribution Unit

The KX-CDU L1300 is the unit we put at the head of a full row of high-density racks. It transfers up to 1,300 kW between the facility water system and the technology cooling loop through a brazed stainless plate exchanger, which means the water your servers see is never the water your building made.

Why isolation matters

Facility water carries whatever the building gives it: particulate from steel pipework, variable chemistry, and the occasional maintenance event. Cold plate microchannels are 0.3 mm wide. Putting one directly on the other is a fouling incident waiting for a date. The L1300 keeps the two circuits mechanically separate and lets you run the technology side on a chemistry you actually control.

Redundancy that survives a service call

Two centrifugal pumps share the load and either one will carry the full rated duty on its own. Both are hot-swappable from the front without breaking the loop, so a pump replacement is a maintenance task rather than an outage. Controllers, sensors and power feeds are duplicated on the same principle.

Control and reporting

Secondary supply temperature is held to ±0.5 K across the turndown range, which is what keeps the die temperature flat when a training job steps the rack load by tens of kilowatts in a second. Every sensor on the unit is exposed over Modbus TCP, BACnet/IP and SNMP v3, so the loop shows up in your DCIM as data rather than as an alarm contact.

Before it ships

Every L1300 runs on our test rig at rated flow and pressure. You receive the measured pump curve, the approach temperature at duty and the leak test record with the unit. If you want a witnessed factory acceptance test, we will schedule one.