120 to 500 Tons (50 and 60Hz)

Hermetic rotary refrigeration machines provide chilled water for either comfort or industrial water cooling systems. These air-cooled chillers for rotary refrigeration are engineered for lower life cycle costs and reliability through design simplicity.

• Sizes from 140 to 500 tons.

• Helirotor™ compressor is direct drive, low speed (3600 rpm). The only moving parts are the rotors and load/unload mechanisms for high reliability and efficiency.


• Two independent rotary refrigerant circuits.


• Tracer™ Chiller Controller and the Adaptive Control™ microprocessor provide all unit control and safety functions in a proactive control strategy.


• Units shipped ready to install with refrigerant (R-134a) and oil, need only electrical and water connections.


• Energy efficiences exceed ASHRAE 90.1 standards and the Advanced Energy Design Guide for K-12 schools .


• All rotary refrigeration units have single inlet & outlet evaporator water connections.


• BACnet™, LonTalk™, and Tracer™ system capability.


• Optional remote evaporator (140-250 tons), assembled separately at the factory


• Optional Standard or High Efficiency units