EN 15502-1:2012+A1:2015

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
4 Classification
5 Construction
6 Electrical safety
7 Controls
8 Operational requirements
9 Useful efficiencies
10 Electric auxiliary energy
11 Risk assessment
12 Marking and instructions
13 Requirements for Eco-design Regulation
   (No 813/2013) and Energy Labelling Regulation
   (No 811/2013)
Annex A (informative) - Properties of carbon and stainless
        steels
Annex B (normative) - Minimum requirements for cast iron
Annex C (normative) - Parts in aluminium and aluminium
        alloys
Annex D (normative) - Parts 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 NOx
Annex K (informative) - Example of calculation of the
        weighting factors NOx
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 the
        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) - Realisation of a protective measure
Annex R (informative) - Overall classification of a basic risk
Annex S (informative) - Not exhaustive list of classification
        examples
Annex T (normative) - Correction for the determined
        efficiency in the low water temperature test of low
        temperature boilers (LTB) and condensing boilers (CB)
Annex U (informative) - Use of test gases
Annex V (informative) - Standards intended to be replaced
        by this standard in combination with the relevant part 2
Annex W (informative) - Alternative Method for the
        determination of the nominal heat input or the maximum
        and minimum heat input (according to 8.4.1) for
        appliances using a pneumatic gas/air ratio control
        system
Annex AA (normative) - Product Information related to
         Eco-design Regulation and Labelling Regulation
Annex BB (normative) - Product label for boilers required by
         the Labelling Regulation 811/2013
Annex CC (normative) - Product label for packages required
         by the Labelling Regulation 811/2013
Annex DD (normative) - Calculation of the seasonal space
         heating energy efficiency of a package of space
         heater, temperature control and solar
Annex ZA (informative) - Clauses of this European Standard
         addressing essential requirements or provisions of EU
         Directive 2009/142/EC, 'Directive relating to
         Appliances burning gaseous fuels (codified version)'
         (GAD)
Annex ZB (informative) - Clauses of this European Standard
         addressing the methods for the verification of the
         efficiency of the EU Directive 92/42/EEC, relating to
         the efficiency of new hot boilers with an output of
         4 - 400 kW
Annex ZC (informative) - Relationship between this
         European Standard and the Requirements of
         COMMISSION REGULATION (EU) No 813/2013
         of 2 August 2013 implementing Directive 2009/125/EC
         of the European Parliament and of the Council with
         regard to ecodesign requirements for space heaters
         and combination heaters
Annex ZD (informative) - Relationship between this
         European Standard and the Requirements of
         COMMISSION DELEGATED REGULATION (EU)
         No 811/2013 of 18 February 2013 supplementing
         Directive 2010/30/EU of the European Parliament
         and of the Council with regard to the energy labelling
         of space heaters, combination heaters, packages of
         space heater, temperature control and solar device
         and packages of combination heater, temperature
         control and solar device
Bibliography

This European Standard specifies 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, marking and energy labelling 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.This European Standard is to be used in conjunction with the specific Parts 2 (Part 2-1 and following ones).This European Standard applies to boilers of types B and C, according to CEN/TR 1749:2014a)that use one or more combustible gases of the three gas families at the pressures stated in EN 437 ;b)where the temperature of the heat transfer fluid does not exceed 105 °C during normal operation;c)where the maximum operating pressure in the water circuit does not exceed 6 bar;d)which can give rise to condensation under certain circumstances;e)!which are declared in the installation instructions to be either a "condensing" boiler or a "low temperature boiler" or a "standard boiler" or an "other boiler". If no declaration is given the boiler is to be considered both a "standard boiler" and an "other boiler";NOTEThe Ecodesign Directive defines "other boilers", "low temperature boilers" and "condensing boilers". The Boiler Efficiency Directive defines "standard boilers", "low temperature boilers" and "condensing boilers". Depending on the legislation applied, a boiler can be both "a standard boiler" and an "other boiler"."f)which are intended to be installed inside a building or in a partially protected place;g)which are intended to produce hot water either by the instantaneous or storage principle, the whole being marketed as a single unit.This European Standard applies to boilers designed for sealed water systems or for open water systems.This general standard and the specific standards (see Part 2) provide requirements for boilers with known constructions. For boilers with any alternative constructions, which might not fully be covered by this standard or a specific standard, the risk associated with this alternative construction will need to be assessed.An example of an assessment methodology, based upon risk assessment, is given in Clause 11.This European Standard is not intended to cover appliances intended for connection to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance.