Energy label classes are only provided for storage tanks with a capacity up to 500 l. Packages incorporating a storage tank with a volume larger than 500 l and a space heater or water heater with a capacity below 70 kW are in principle covered by the definitions of the Regulations.
In order to properly calculate the solar contribution, the tank rating can be calculated according to the standing loss S using table 4 of Regulation (EU) 811/2013.
Disclaimer: Please note that the European Commission cannot provide a legally binding interpretation of the EU legislation, as this is the sole competence of the European Court of Justice. Any remarks from the European Commission services are without prejudice to the position the Commission might take should related cases arise in a procedure before the Court of Justice.
The calculation scheme Annex IV of the respective regulations is only provided for one solar connector connected to one tank. In cases where the solar collectors are connected to more than one tank, the sum total of the included volumes can be applied; the volume-weighted 35 standing losses and the worst energy efficiency class of the tanks should be used.
Disclaimer: Please note that the European Commission cannot provide a legally binding interpretation of the EU legislation, as this is the sole competence of the European Court of Justice. Any remarks from the European Commission services are without prejudice to the position the Commission might take should related cases arise in a procedure before the Court of Justice.
As far as the content of the technical documentation is concerned, testing one combination for each separate space heaters heat generator and housing is sufficient where only the color differentiates the housings.
Disclaimer: Please note that the European Commission cannot provide a legally binding interpretation of the EU legislation, as this is the sole competence of the European Court of Justice. Any remarks from the European Commission services are without prejudice to the position the Commission might take should related cases arise in a procedure before the Court of Justice.