How should water heaters that are installed together with a mixing valve be tested?

As indicated in the transitional methods, water heaters have to be tested in the “out of the box” mode. This means that if the water heater is delivered with the mixing valve or it is indicated that it must be used, the water heater should be tested with the mixing valve.

_{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.}