The GTS104 family of Geared Twin Screw compressors utilize a common platform, 104mm diameter driver rotor. The fmaily includes six displacements from 123 cfm to 300 cfm at a 60Hz drive frequency. Nominal capacities range from 33 to 70 tons with R-134a at flooded chiller operating conditions. Optimized models are available for air cooled and water cooled condensers, as well as for economized and non-economized applications. All models are identical externally.