DIN EN 15502-1:2012-10

This standard is the first of a series of standards in which the particular requirements for special types of boilers are described. This standard contains the general requirements that are applicable for the majority of boiler special constructions. This European Standard shall be used in conjunction with the specific Parts 2-1 and the following ones. This document was prepared to deal with the following aspects: - safety; - efficient use of energy; - fitness for purpose. Matters related to quality assurance systems, tests during production, and certificates of conformity of auxiliary devices are not dealt with in this series of European Standards. Part 1 of this European Standard (basic 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 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". This European Standard is to be used in particular in conjunction with the specific Parts 2-1 and following ones. This standard applies to boilers of types B and C, according to CR 1749: - that use one or more combustible gases of the three gas families at the pressures stated in EN 437; - where the temperature of the heat transfer fluid does not exceed 105 °C during normal operating conditions; - where the maximum operating pressure in the water circuit does not exceed 6 bar; - which can give rise to condensation under certain conditions. This standard applies to boilers designed for sealed water systems or for open water systems. This general standard and the specific standards describe 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, and which covers the basic requirements of the GAD, is described. This standard only addresses the type test.