scope:

This standard applies to heat-operated unitary air conditioners and heat pumps consisting of one or more assemblies, including engine-driven systems. Where such equipment is provided in more than one assembly, the separate assemblies are designed to be used together.

Equipment within the scope of this standard may be classified as follows:

a. Component arrangements:

1. factory-assembled equipment employing heat- operated or mechanical refrigeration cycle or cycles (e.g., a packaged unit)

2. equipment employing a heat-operated or mechanical refrigeration cycle with indoor and outdoor sections in separate assemblies (e.g., a split system)

3.equipment employing a heat-operated or mechanical refrigeration cycle as a liquid chiller with cooling coil in separate assembly (e.g., chiiier)

4. equipment employing refrigeration cycles and heating functions (e.g., chiller/heater)

b. Method of providing circulation through indoor section:

1. with circulating fan incorporated with indoor assembly

2. without circulating fan, for use with separate fan or air handler, or with heating equipment incorporating a fan

c. Medium for heat transfer to or from the outdoors:

1. air

2. water (or brine)

3. evaporatively cooled condenser (cooling only)

This standard does not include methods of testing the foilowing types of equipment:

1. heat-operated and engine-driven liquid chillers not part of a unitary air conditioner (Reference 1, ARI Standard 560-82 covers indirect-fired absorption chillers)

2. unitary air conditioner or heat pumps covered in Reference 2 (ANSI/ASHRAE Standard 37, Method of Testing for Rating Unitary Air Conditioning and Heat Pump Equipment)

3. refrigerating systems employing the Peltier effect

4. desiccant-based cooling systems