Danfoss variable-speed VZH inverter scroll compressors operate at part-load conditions. Designed for small rooftop and process cooling applications, they offer cooling capacities between 4 and 6.5TR with a single compressor and up to 13 tons with a manifold configuration. With a permanent magnet motor and intermediate discharge valves, the compressors facilitate efficiency ratings up to 21 IEER and can modulate from 15 to 100 rps.

 Danfoss; www.danfoss.com