PREN 26 : DRAFT 2012

Foreword
1 Scope
2 Normative references
3 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
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 ZA (informative) - Clauses of this European
         Standard addressing Essential Requirements
         or other provisions of EU Directives

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'.