This standard applies to the outdoor sections of factory-made air-conditioning and heat pump equipment with cooling capacities up to 40kW, as in the scope of AHRI Standards 210/240 and 340/360 when rated in accordance with AHRI Standard 270.

Purpose. The purpose of this standard is to establish for outdoor unitary equipment: definitions, procedures for estimating A-Weighted Sound Pressure Levels from the A-Weighted Sound Power Ratings, and recommended application practices.