(6) Un-Used Airflow Company Room Air Conditioning Units - 30 Tons. Model: CCT-30G4-PC-UD. Refrigerant: R-22. Test pressure (hi/lo): 350/150 psig. Power supply: 460 V, 60 Hz, 3 phase. (2) Copeland Compliant Scroll Compressors, Model: ZR19M3-TWD-561, maximum operating pressure (hi/lo): 398.85/246.56 psi, power supply: 3500/2900 rpm, 460/380-420 V, 27.8/27.8 amps, 187/179-198 LRA, 60/50Hz, 3 phase. An up flow unit designed to reduce operating costs during mid to low ambient temperatures (71 – 77°F) by integrating an economizer coil into the glycol-cooled system. At a return glycol temperature of 45° F (7° C) published capacity is accomplished by the economizer coil, therefore compressor operation is typically not required. Designed to provide accurate temperature control of computer rooms, laboratories, and other environments requiring close tolerance controls. These units were installed but never commissioned at Global Crossing/ Worldcom’s headquarters building near Boston, Mass. Overall dimensions: 10 ft. 4 in. L x 34 in. W x 93 in. H. (ACN250).