scope:

Specifies the supplementary requirements and tests for the construction, safety, rational use of energy, fitness for purpose, classification and marking of combination boilers. The domestic hot water is produced on either the instantaneous or the storage principle. The domestic hot water production is integrated or coupled, the whole being marketed as a single unit. This standard does not apply to two appliances operating independently of each other - a boiler and a water heater - included in the same case, even if they have a common flue.