scope:

Applies to these equipment, but does not apply to water-heaters using other sources of energy, water-heaters with more than one heated volume and water-heaters without thermal insulation. Lays down and defines the principal performance characteristics of such equipment which are of interest to the user and describes the standard methods for measuring thesecharacteristics. Is concerned neither with safety nor with performance requirements. Consists of four sections concerning with general, definitions, general notes on measurements with a list of and general conditions for the measurements and measuring methods.