These days, there's a lot to look into when choosing a compressor for low-temperature refrigeration applications. If you want to match the efficiencies and reliability of R-502 units, you have to specify a two-stage booster system. If you want the ease and convenience of a single unit, you have to specify a single-stage, demand-type compressor.

That's why we created the Carlyle Compound Cooling™ Compressor. It's the first R-22 compressor to offer two-stage booster efficiencies from a single, easy-to-specify and install unit. It's going to change the way you look at R-22 compressors.
 
 
 
  Carlyle Compound Cooling™ uses six cylinders to provide two complete compression cycles. The first four act as the low stage, boosting the suction pressure from the refrigeration load to intermediate pressure. The remaining two act as high stage, completing the compression cycle at normal discharge temperatures.

The result is lower internal losses from a compressor that delivers the same capacities as R-502 units while providing higher operating efficiencies than single-stage units of the same displacement.
 
 
 
  A major concern with single-stage units is reliability. That's because the single-stage compression of R-22 can easily cause overheating at compression ratios. To compensate for the higher discharge temperatures, liquid refrigerant must be injected into the cylinders - a dangerous risk to the compressor.

Carlyle Compound Cooling™ compressors are designed to avoid these risks. That's because they operate steadily at low compression ratios, free from dangerous injections of liquid refrigerant directly into the cylinders. And since each unit operates at such a constant capacity, stress caused by short cycling is reduced. The result is round-the-clock reliability that single-stage units can't match.
 
 
 
  With nine models available, Carlyle Compound Cooling™ fits in comfortably with virtually any low-temperature application. Unit dimensions are similar to other Carlyle compressors, making them the perfect unit for new supermarket rack designs. Installation is as easy as bolting the unit into place, attaching the economizer, and making standard suction and discharge connections. It's the user-friendliest two-stage system on the market today!
 
 
 
  Every Carlyle Compound Cooling™ model offers everything necessary to ensure years of efficient, trouble-free performance - low oil circulation rates - oil controls that are identical to R-502 rack systems. And the backing of Carlyle's Green Carpet Program, a support program so comprehensive, it offers a toll-free support line, instant credit for qualified customers, and 24-hour replacements for down compressors - guaranteed.