# Commission Regulation (EU) No 814/2013 of 2 August 2013 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for water heaters and hot water storage tanks (Text with EEA relevance), Division 4: CONDITIONS FOR TESTING SOLAR WATER HEATERS

Extent: E+W+S+N.I.

The solar collector, solar hot water storage tank, pump in the collector loop (if applicable) and heat generator shall be tested separately. Where the solar collector and solar hot water storage tank cannot be tested separately, they shall be tested in combination. The heat generator shall be tested under the conditions set out in point 2 of this Annex.
The results shall be used for the calculations set out in point 3(b) of Annex IV under the conditions set out in Tables 2 and 3. For the purpose of establishing Qtota the efficiency of the heat generator using the Joule effect in electric resistance heating elements is assumed to be 100/CC.

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Source: https://www.legislation.gov.uk/eur/2013/814/annex/III/division/4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2013-814/annex-III/division-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.