NEN EN 15417 : 2006

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification of boilers
  4.1 Gases and categories
  4.2 Classification according to the mode of
      evacuation of the combustion products
  4.3 Classification according to operating conditions
      4.3.1 Gas condensing boiler
      4.3.2 Standard boiler
5 Constructional requirements
  5.1 Materials in contact with condensate
  5.2 Removal of condensate
  5.3 Chemical composition of the condensate
  5.4 Control of the combustion products temperature
6 Operational requirements
  6.1 General
  6.2 Verification of the nominal condensing output
  6.3 Formation of condensate
  6.4 Temperature of combustion products
  6.5 Combustion
  6.6 Useful efficiency
      6.6.1 General
      6.6.2 Useful at the nominal heat input
      6.6.3 Useful efficiency at part load
7 Test methods
  7.1 General
  7.2 Verification of the nominal condensing output
  7.3 Formation of condensate
  7.4 Temperature of combustion products
  7.5 Combustion
      7.5.1 Normal conditions
      7.5.2 Condensate discharge blockage
  7.6 Useful efficiency
      7.6.1 General
      7.6.2 Useful efficiency at nominal heat input
      7.6.3 Useful efficiency at part load
8 Marking
  8.1 Data plate
  8.2 Instructions
      8.2.1 Technical instructions for the installer
      8.2.2 Use and maintenance instructions for the
            user
Annex A (normative) Correction for the determined
         efficiency in the low water temperature
         test of condensing boilers
Annex ZA (informative) Clauses of this European standard
         addressing essential requirements or other
         provisions of EU Directives
Bibliography

Determines gas-fired central heating boilers, which are declared by the manufacturer to be 'condensing boilers': - of types C (excluding appliances without a fan) and B; - using one or more gases corresponding to the three gas families; - for which the nominal heat input is greater than 70 kW but not exceeding 1000 kW.