scope:

This Japanese Industrial Standard 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.

Further, this Standard is applicable to chillers for use with a functional refrigerant having a saturation vapour pressure of not more than 3 MPa at the temperature of 35 °C; those chillers which depends on use of brine other than water to perform cooling and heating, or chillers intended for drinking water are not covered by this Standard.

NOTE All pressures indicated in this Standard are gauge pressures.