scope:

This standard applies to the air-cooled outdoor portions of factory-made commercial and industrial Large Aircooled Outdoor Refrigerating and Air-conditioning Equipment greater than 40kW cooling capacity. This equipment is covered by AHRI Standard 340/360, Performance Rating of Commercial and Industrial Unitary Air-conditioning and Heat Pump Equipment, ANSI/AHRI Standards 365 (I-P) and 366 (SI), Commercial and Industrial Unitary Air-conditioning Condensing Units, ANSI/AHRI Standard 520, Performance Rating of Positive Displacement Condensing Units, ANSI/AHRI Standard 460, Performance Rating of Remote Mechanical-draft Air-cooled Refrigerant Condensers, AHRI Standards 490 (I-P) and 491 (SI), Remote Mechanical-draft Evaporatively-cooled Refrigerant Condensers, as well as AHRI Standards 550/590 (I-P) and 551/591 (SI), Performance Rating of Water Chilling Packages Using the Vapor Compression Cycle.

Exclusions. This standard does not apply to the outdoor portions of unitary air-conditioning or heat pump equipment which fall within the scope of AHRI Standard 270, Sound Rating of Outdoor Unitary Equipment (cooling capacity ratings of less than 40 kW).

Purpose

The purpose of this standard is to establish methods for determining the sound ratings of the outdoor portions of factory-made commercial and industrial Large Air-cooled Outdoor Refrigerating and Air-conditioning Equipment. It establishes definitions; test requirements; rating requirements; minimum data requirements for Published Ratings; and conformance conditions. 

intent. This standard is intended for the guidance of the industry, including manufacturers, engineers, installers, contractors and users. 

Review and Amendment. This standard is subject to review and amendment as technology advances