scope:

This standard applies to air control and distribution devices used in commercial air distribution systems which are ducted air devices and provide control of air volume and/or air temperature by one or more of the following means: a. Fixed or adjustable directional vanes. b. Pressure dependent volume dampers or shutoff valves (including air induction nozzles and dampers). c. Pressure compensated volume dampers or shutoff valves (including air induction nozzles and dampers). d. Heat exchange. e. On/off fan control. f. Variable speed fan control. These devices may or may not have a fan to deliver air into a space. Exclusions. This standard does not apply to registers, diffusers and grilles nor to products specifically covered by: a. The Air Heating and Cooling Coils Sub-Section of the Air Conditioning Heat Transfer Products Section of ARI. ARI Standard 410. b. The Room Fan-Coil and Air-Induction Units Sub-Section of the Air Conditioning Heat Transfer Products Section of ARI. ARI Standard 440.

Purpose. The purpose of this standard is to establish for air terminals: definitions and symbols; classifications; requirements for testing and rating; 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.