Chapter 2.0 Compressor Overview
The TTS/TGS/TTH/TGH Centrifugal series of compressors is a group of compressors that covers the nominal capacity
range from 90 to 200 Tons (TTS/TTH) and 70 to 150 Tons (TGS/TGH). This series of compressors are an oil free
centrifugal design based on magnetic bearing technology.
As of May 6, 2019, the product nomenclature changed. Figure 2-1 Old Type Code to New Type Code Rev D maps
the old structure of the Type Code to the new structure. Additionally, the “Series” indicators not have an additional
character in order to differentiate the standard compressors from high-lift compressors. Unless the compressor is a
high-lift design, an “S” will be added (e.g., TTS350). A high lift compressor will have an “H” in the Series designation
(e.g., TTH375). Throughout this manual, it shall be assumed that if a series designation contains neither an "S" or "H"
(e.g., TT350) that it is not a high-lift design. Refer to Figure 2-2 Compressor Nomenclature for a complete
description for the new Type Code.
2.1 TTS/TGS/TTH/TGH Compressor Nomenclature
Figure 2-1 Old Type Code to New Type Code Rev D
M-AP-001-EN Rev. S-9/8/2021 Page 19 of 136
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