The air-cooled liquid chillers include the HELIOS, EOS and STRATOS series and are designed exclusively for outdoor use. They offer a very wide capacity range in almost all application areas and can be adapted to almost all project-specific needs through a variety of options. The HELIOS and EOS series was developed to cover small to medium performance ranges. The STRATOS VP series is the driving force among the Secon series of air-cooled chillers. It covers the high capacity range. The air-cooled units are available in single- to four-circuit versions. Semi-hermetic reciprocating compressors, which were specially developed for applications with flammable refrigerants, are used as compressors. The capacity control is either stepless via inverter ...