This standard applies to Evaporative Condensers as defined in Section 3 of this standard and is limited to Halocarbon Refrigerants and ammonia (R-717), for use with or without external air resistance.
ANSI/AHRI 490-2011 history
2011ANSI/AHRI 490-2011 Performance Rating of Remote Mechanical-Draft Evaporatively-Cooled Refrigerant Condensers