PREN 15502-1 : DRAFT 2010

Foreword
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Classification
5 Construction
6 Electrical safety
7 Controls
8 Safety of operation
9 Useful efficiencies
10 Electric auxiliary energy
11 Risk assessment
12 Marking and instructions
Annex A (informative) - Properties of carbon and stainless steels
Annex B (normative) - Minimum requirements for cast iron
Annex C (normative) - Parts cast in aluminium and aluminium
                      alloys
Annex D (normative) - Parts cast in copper or copper alloys
Annex E (normative) - Minimum thicknesses for rolled parts
Annex F (normative) - Nominal minimum thicknesses of boiler
        sections of cast materials under water pressure
Annex G (normative) - Parameters for welded joints and welding
        processes
Annex H (informative) - Composition of the gas circuit
Annex I (informative) - Compilation of the test conditions
        for the various gas families
Annex J (informative) - Calculation of conversions of NO[x]
Annex K (informative) - Example of calculation of the weighting
        factors NO[x]
Annex L (informative) - Practical method of calibrating the
        test rig to enable the heat loss Dp to be determined
Annex M (informative) - Means of determining the ignition time at
        full rate
Annex N (informative) - Determination of the heat losses from the
        test rig of the indirect method and contributions of the
        circulating pump of the test rig
Annex O (informative) - Example of a risk assessment method
Annex P (informative) - Examples of risk assessment with a method
        described in Annex O
Annex Q (informative) - Realization of a protective measure
Annex R (informative) - Overall classification of a basic risk
Annex S (informative) - Not exhaustive list of classification
        examples
Annex ZA (informative) - Clauses of this European standard
         addressing essential requirements or provisions
         of EU Directives
Bibliography

Describes the common requirements and test methods concerning, in particular the construction, safety, fitness for purpose, and rational use of energy, as well as the classification and marking of gas-fired central heating boilers that are fitted with atmospheric burners, fan assisted atmospheric burners or fully premixed burners, and are hereafter referred to as "boilers".