| abstract |
(57) [Abstract] [Purpose] To provide a refrigeration system that can easily perform optimal operation even if the refrigerant used in the refrigeration system is changed to a substitute refrigerant that does not harm the global environment in the future. [Structure] A control switching device 23, an outdoor control section 22 in which control contents of several kinds of refrigerants are stored in advance, a control switching device 2 The display device 26 is provided which can display the type of the refrigerant switched in 3. |