NEN EN 676 : 2003 + A2/C1 2008

1 Scope
2 Normative references
3 General definitions
  3.1 Specific definitions
4 Constructional and operational requirement
  4.1 Conversion to different gases
  4.2 Construction
  4.3 Equipment
  4.4 Functional and operational requirements
5 Test methods
  5.1 General
  5.2 Functional tests
  5.3 Operation
  5.4 Tests to be carried out on the working and test diagrams
  5.5 Combustion
  5.6 Start-up
  5.7 Obtaining the heat input
  5.8 Electrical safety
6 Marking, labelling and packaging
  6.1 General
  6.2 Data plate
  6.3 Other marking
  6.4 Instructions for installation, adjustment, maintenance and
      operation
  6.5 Marking on the packaging
  6.6 Official languages to be used
Annex A (informative) Determination of the combustion characteristics
        - carbon monoxide and nitrogen oxides
Annex B (informative) Examples of control box sequencing
Annex C (informative) Test gases
        C.1 General
        C.2 Conditions for preparation of the test gases
        C.3 Practical application of the test gases
Annex D (informative) Gas connections conditions in common use
        in the various countries
Annex E (informative) Tests
        E.1 Supplementary testing
        E.2 Drawing review
        E.3 Individual test and inspection
        E.4 Test report
Annex F (informative) Use of alternative gas lines and test
        documentation
        F.1 Use of alternative gas lines
        F.2 Test documentation
Annex G (informative) Correction of the influence of combustion
        air temperature and humidity on NO[x] emissions
Annex H (informative) Check of the air proving device
Annex I (informative) Specific additional requirements and
        limitations for use of EN 676 burners for industrial
        applications
        I.1 Pre-heating of the combustion air
        I.2 Continuous working of the air ventilator
        I.3 Electronic air/fuel ratio and O[2]-controllers
        I.4 Variable excess of combustion air
        I.5 Burner with start gas flame
        I.6 Air filtering
Annex ZA (informative) A-deviations
Annex ZB (informative) Clauses of this European Standard addressing
         essential requirements or other provisions of EU Directives

Defines the terminology, the general requirements for the construction and operation of automatic forced draught gas burners and also the provision of control and safety devices, and the test procedure for these burners.