To improve cooling availability and make future expansion easier, the design was changed to a modular N+1 configuration. Dividing the load across multiple chillers allows capacity to follow actual server demand, while keeping standby cooling available if one module requires service.

The final solution uses four EXINDA 30 Ton Modular Water-Cooled Scroll Chillers in a three-duty, one-standby arrangement, providing 90 tons of active cooling and 30 tons of backup capacity. Operating on 460V/3Ph/60Hz power and integrated with the building management system through BACnet or Modbus, the EXINDA system enables staged operation, runtime rotation and module-level isolation—delivering scalable capacity, easier maintenance and reliable cooling for continuous data center operation.