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Rawal Devices Inc.: R-410A A/C Capacity Control

The APR-410 control provides full-capacity modulation for all sizes of direct-expansion air conditioning systems that use R-410A refrigerant. The control continuously and automatically matches a/c system capacity/output to changing load conditions. As a result, it helps improve humidity control without overcooling the space. It also eliminates many common maintenance problems associated with excess system capacity, such as coil icing, liquid slugging, and excessive compressor cycling. It smoothly modulates the air conditioning system's capacity by varying refrigerant flow according to suction pressure, which changes with the temperature of air crossing the evaporator coil.

Rawal Devices Inc., P.O. Box 2058, Woburn, MA 01888; 800-727-6447; 781-933-3306 (fax); sales@rawal.com; www.rawal.com

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