Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Constructional and operational requirements
  4.1 General principles
  4.2 Operational requirements
5 Test methods
  5.1 General principles
  5.2 External tightness of the gas line
  5.3 Heat input rates
  5.4 Gas pressure governor
  5.5 Safety of operation
  5.6 Control and safety equipments
  5.7 Combustion
  5.8 Useful efficiencies
  5.9 Condensation
6 Marking and instructions
  6.1 Marking
  6.2 Instructions
  6.3 Presentation
Annex A (informative) Diameters of combustion products
                      evacuation ducts marketed in the
                      various countries
Annex B (informative) Practical method of calibrating the
                      test rig to enable determination of
                      heat loss D[p]
Annex C (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 D (informative) Determination of the operating time at
                      full rate prior to modulation
Annex E (normative) Determination of the combustion
                      characteristics - Carbon monoxide and
                      nitrogen oxides
Annex F (normative) Case of a forced draught burner complying
                      with EN 676
Annex G (informative) Main symbols and abbreviations used
Annex H (informative) A-deviations
Annex ZA (informative) Clauses of this European Standard
                       addressing essential requirements or
                       other provisions of EU Directives
Bibliography