NEN EN 416-2 : 2006

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification of appliances
  4.1 Classification according to the nature of the gases used
  4.2 Classification according to the gases capable of being used
  4.3 Classification according to the mode of evacuation of the
      combustion products
5 Symbols
6 Requirements for the rational use of energy
7 Test methods
  7.1 General
  7.2 Radiant factor
      7.2.1 General
      7.2.2 Method A
      7.2.3 Method B
Annex A (informative) Recording test data (Test Method A)
        A.1 General information to be recorded
        A.2 Measurement results
Annex B (informative) Blank forms (Test method A)
        B.1 Model test result form - Quarter sphere burner end and
            opposite end
        B.2 Model test result form - Quarter cylinder (Burner side
            and opposite side)
        B.3 Model test result form - Half sphere for appliances less
            than or equal to 1,3 m long
Annex C (informative) Worked example (Test method A)
        C.1 Radiant factor - Recorder data and calculation
        C.2 Radiant output - Recorded data and calculation
            C.2.1 Quarter spheres (Burner end and opposite end)
            C.2.2 Quarter cylinders (Burner side and opposite side)
Annex D (normative) Procedure for measuring the window correction
        factor (F[w]) (Test method A)
Annex E (normative) Correction of measured radiant output for
        absorption by air (Test methods A and B)
        E.1 General
        E.2 Mean beam length (D)
        E.3 Absorption of radiation by water vapour
        E.4 Absorption of radiation by carbon dioxide
        E.5 Total radiation absorption
        E.6 Calculation method
Annex F (informative) Radiant heat output data - Recording of
        results (Test method B)
        F.1 General information to be recorded
            F.1.1 Test and appliance data
            F.1.2 Radiometer technical data
            F.1.3 Measuring plane technical data
        F.2 Measurement results
            F.2.1 Test information
            F.2.2 Test ambient conditions
            F.2.3 Gas/heat input data
            F.2.4 Flue gas data
            F.2.5 Absorption of water vapour and CO[2] data
            F.2.6 Irradiation measurement data
Annex G (informative) Worked example (Test method B)
        G.1 General information
        G.2 Radiometer technical data
        G.3 Measuring plane technical data
        G.4 Measurement results
            G.4.1 Test information
            G.4.2 Test ambient conditions
            G.4.3 Gas/heat input data
            G.4.4 Flue gas data
            G.4.5 Absorption of water vapour and CO[2] data
            G.4.6 Irradiation measurement data
Annex H (informative) Radiometer design (Test method B)
        H.1 Principle radiometer design features
        H.2 Radiometer technical design
        H.3 Pyro-electric detector
Annex I (normative) Radiometer calibration (Test method B)
        I.1 Radiometer calibration
            I.1.1 General
            I.1.2 Black Body calibration method
        I.2 Worked example
Annex ZA (informative) Relationship between this European
         Standard and the Essential Requirements or other
         provisions of EU Directives

Describes the requirements and test methods for the rational use of energy of non-domestic gas fired overhead radiant tube heater.