DIN EN 26:2015-08

National foreword
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification of water heaters
5 Constructional requirements
6 Operational requirements
7 Rational use of energy
8 Fitness for purpose
9 Marking and instructions
10 Ecodesign Data
11 Energy Labelling Data
Annex A (informative) - National situations
Annex B (normative) - Test apparatus for type
        C[1], C[3], B[4] and B[5] water heaters
Annex C (normative) - Test apparatus for type
        C[21] appliances
Annex D (normative) - Description of the sealed
        room for the tests of type A[AS] appliances
Annex E (informative) - Soundness of the gas
        circuit test - Volumetric method
Annex F (informative) - Principal symbols and
        abbreviations used
Annex G (informative) - Guidelines for extension
        to other categories
Annex H (informative) - A deviations
Annex I (normative) - Lists of materials currently
        used
Annex J (normative) - Test methods to determine
        the effects of to long-term thermal load,
        long-term condensate exposure, condensing/
        non-condensing cycling and resistance to
        UV radiation
Annex K (informative) - NOx conversion calculation
Annex L (normative) - Parts in copper or copper alloys
Annex M (informative) - Compilation of the test conditions
        for the various gas families
Annex N (informative) - Alternative Method for the
        determination of the nominal heat input or the
        maximum and minimum heat input (according
        to 6.3.1) for appliances using a pneumatic gas/air
        ratio control system
Annex ZA (informative) - Relationship between this
         European Standard and the requirements of
         EU Directive 2009/142/EC
Annex ZB (informative) - Relationship between this
         European Standard and the requirements of
         Commission Regulation (EU) No 814/2013
Annex ZC (informative) - Relationship between this
         European Standard and the requirements of
         Commission Delegated Regulation (EU) No 812/2013
Bibliography

Specifies the specifications and test methods concerning the construction, safety, rational use of energy and fitness for purpose, and also the classification and marking of gas-fired instantaneous water heaters for sanitary uses, hereafter called 'water heaters'.