scope:

This standard applies to factory-made Unitary Air-conditioners and Unitary Air-source Heat Pumps with capacities less than 65,000 Btu/h as defined in Section 3.

Energy Source.

This standard applies only to electrically operated, vapor compression refrigeration systems.

Exclusions.

This standard does not apply to the rating and testing of:

Heat operated air-conditioning/heat pump equipment.

Packaged Terminal Air-conditioners/Heat Pumps, as defined in AHRI Standard 310/380 • CSA C744.

Room air-conditioners/heat pumps.

Unitary Air-conditioners and Unitary Air-source Heat Pumps as defined in AHRI Standard 340/360 with capacities of 65,000 Btu/h or greater.

Water-source Heat Pumps, Ground Water-source Heat Pumps, or ground-source closed-loop Heat Pumps as defined in ISO/ANSI/ASHRAE/AHRI Standards 13256-1 and 13256-2.

Water heating heat pumps.

Units equipped with desuperheater/water heating devices in operation.

Variable Refrigerant Flow Air Conditioners and Heat Pumps as defined in AHRI Standard 1230 with capacities of 65,000 Btu/h and greater.

Single Packaged Vertical Units as defined in ANSI/AHRI Standard 390.

Purpose.

The purpose of this standard is to establish the following for Unitary Air-conditioners and Unitary Air-source Heat Pumps: definitions, classifications, test requirements, rating requirements, operating 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.