Suited for use in the pharmaceutical industry as well as mining sites and even rocket test facilities, York YD model C is offered with Optispeed variable-speed drives (VSD) and an expanded capacity range of 1,500 to 6,000 tons (5,300 to 21,000 kW). The addition of a unit-mounted low voltage or floor-mounted medium range VSD optimizes the dual compressor centrifugal chiller and improves its part-load efficiency by as much as 13 percent, according to the manufacturer. At AHRI conditions (460 V/60 Hz), it provides up to 3,000 tons (10,550 kW) of cooling.

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