scope:

This standard applies to Central Station Air-handling Units, as defined in Section 3.

This standard applies to Supply Fan ratings for Central Station Air-handling Units with Plenum Fans in a cabinet, Fan Arrays, Housed Centrifugal Fans, and Axial Fans.

(Informative Note: Fan and motor assemblies that are not intended to be separated are within the scope of this standard with the addition of the electrical power measurement method in Section 5.1.1.)

Exclusions.

This standard does not apply to unit heaters intended for free delivery of heated air or to room fan-coils as defined in AHRI Standard 440.

This standard does not apply to units that have direct expansion coils incorporated by the manufacturer in a matched split system air-conditioner, or as otherwise defined in AHRI Standard 210/240 or in AHRI Standard 340/360.

This standard does not apply to unit ventilators as defined in AHRI Standard 840.

This standard does not apply to DX Dedicated Outdoor Air System Units as defined in AHRI Standard 920.

This standard does not apply to Computer and Data Processing Room Air Conditioners as defined in AHRI Standard 1360.

Purpose.

The purpose of this standard is to establish for Central Station Air-handling Unit Supply Fans: definitions; classifications; test requirements; rating requirements; minimum data requirements for Published Ratings; marking and nameplate data; 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.