Johnson Controls has extended the capacity range of its YORK YZ Magnetic Bearing Centrifugal Chiller to include chillers beyond 1,000 tons (3,516 kW), now up to 1,350 tons (4747 kW) of refrigeration. In early 2018, the YORK YZ Chiller was launched with a capacity range of 165 to 1,000 tons (580 to 3516 kW).
The extended capacity, AHRI-certified YORK YZ Chiller uses an integral, variable speed drive and magnetic bearing technology that features a single moving assembly suspended in a magnetic field that does not require lubrication. This technology requires 80 percent fewer moving parts than traditional oil or refrigerant-lubricated drivelines. The result is reliability, reduced maintenance and efficiency.
The YORK YZ Chiller uses a single stage design to provide energy efficiency. Its low maintenance and operating map are all thanks to the lubrication-free magnetic bearings that can handle any operating condition, and now that technology is available at even higher capacities.