This document applies to gas-fired central heating boilers, which are declared by the manufacturer to be " condensing boilers" :
¾ of types C (excluding appliances without a fan) and B,
¾ using one or more gases corresponding to the three gas families, and
¾ for which the nominal heat input is greater than 70 kW but not exceeding 1 000 kW. This document only covers type testing.
This document completes or modifies the standards EN 656, EN 13836, and prEN 15420 hereafter called " boiler standards" . It specifies supplementary requirements for condensing boilers.