Foreword
1 Scope
2 Normative references
3 Terms and definitions
  3.1 Combustible gases
  3.2 Constituent parts of the boiler
  3.3 Operation of the boiler
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
  4.4 Modular boiler
5 Constructional requirements
  5.1 General
  5.2 Conversion to different gases
  5.3 Materials and method of construction
  5.4 Design
  5.5 Use and servicing
  5.6 Connections to the gas and water pipes
  5.7 Soundness
  5.8 Supply of combustion air and the evacuation of the
       combustion products
  5.9 Checking the state of operation
  5.10 Drainage
  5.11 Electrical equipment
  5.12 Operational safety in the event of failure of the
       auxiliary energy
  5.13 Adjusting, control and safety devices
  5.14 Burners
  5.15 Pressure test points
  5.16 Chemical composition of the condensate for
       low-temperature boilers
6 Operational requirements
  6.1 General
  6.2 Soundness
  6.3 Nominal, maximum and minimum heat inputs, and nominal
       output
  6.4 Safety of operation
  6.5 Adjusting, control and safety devices
  6.6 Combustion
  6.7 Useful efficiencies
  6.8 Criteria for condensation in the flue
  6.9 Resistance of materials to pressure
  6.10 Hydraulic resistance
  6.11 Combustion air and flue dampers
  6.12 Condensation in a standard boiler
7 Test methods
  7.1 General
  7.2 Soundness
  7.3 Nominal, maximum and minimum heat inputs and nominal
       output
  7.4 Safety of operation
  7.5 Adjusting, control and safety devices
  7.6 Combustion
  7.7 Useful efficiencies
  7.8 Criteria for condensation in the flue
  7.9 Resistance of materials to pressure
  7.10 Hydraulic resistance
  7.11 Combustion air and flue dampers
  7.12 Condensation in a standard boiler
8 Marking and instructions
  8.1 Marking of the boiler
  8.2 Instructions
  8.3 Presentation
Annex A (informative) National situations
Annex B (informative) Special national conditions
Annex C (informative) A-deviations
Annex D (informative) Practical method of calibrating the
                       test rig to enable the heat loss Dp
                       to be determined
Annex E (informative) Main symbols and abbreviations used
                       within this European Standard
Annex F (informative) Compilations of test conditions used
                       within this European Standard
Annex G (informative) Valving
Annex H (informative) Determination of the heat losses from
                       the test rig of the indirect method and
                       the contributions of the circulating pump
                       of the test rig
Annex I (informative) Means of determining the ignition time at
                       full rate
Annex J (informative) Example of calculation of the weighting
                       factors for a boiler with several rates
Annex K (informative) Calculation of conversions of NO[x]
Annex L (informative) Use of test gases
Annex ZA (informative) Clauses of this European Standard addressing
                       essential requirements or provisions of
                       EU Directives
Bibliography