scope:

Specifies methods for testing and reporting of the rating and specifies requirements for marking of air and water cooled air conditioners, air/air and water/air heat pumps with electrically driven compressors when used in cooling mode. When these units are used in heating mode by reversing the refrigerating cycle, then EN 255-2 applies. This standrad applies to factory-made units which can be ducted. The units can be of the following specific types: comfort air conditioner or heat pump, spot air conditioner, single duct air conditioner, control cabinet air conditioner, close control air conditioner. In the case of units consisting of several parts, the standard applies only to those designed and supplied as a complete package. Units having two or more indoor sections connected to a single outdoor unit (multiple split system air conditioners or heat pumps) are excluded from this standard. This standard does not apply to continuously variable capacity control units. This standard does not apply to liquid chilling packages/units.