JIS B 8621:2019 specifies requirements for the centrifugal water chillers (hereafter referred to as chillers) which perform cooling or heating of water by the refrigerating cycle consisting of a centrifugal compressor, compressor driving motor, evaporator, water cooled condenser, auxiliary refrigerant pipings and control system. The refrigeration capacity or heat pump heating capacity covered by this Standard is 150 kW and over according to the standard rating specified by this Standard.