AHRI 540

Abstract

This standard applies to electric motor driven, single and variable capacity positive displacement refrigerant compressors and compressor units. This standard also applies to the presentation of performance data for positive displacement refrigerant compressors and compressor units for air-cooled, evaporatively-cooled or water-cooled air-conditioning, heat pump and refrigeration applications. <br><em>Refrigerant.</em> The rating points in this standard are based on commonly used refrigerants. <br><em>Exclusions.</em> <br>This standard does not apply to compressors and compressor units employing ammonia, as covered in ARI Standard 510. <br>This standard does not apply to compressors and compressor units intended for use in: <br>a. Household refrigerators and freezers <br>b. Automotive air-conditioners <br>c. Dehumidifiers <br>Purpose. The purpose of this standard is to establish, for single and variable capacity positive displacement refrigerant compressors and compressor units: definitions; test requirements; rating requirements; minimum data requirements for Published Ratings; operating requirements; marking and nameplate data and conformance conditions. <br><em>Intent.</em> This standard is intended for the guidance of the industry, including manufacturers, engineers, installers, contractors and users. <br><em>Review and Amendment.</em> This standard is subject to review and amendment as technology advances.