The electric power input is measured at the declared maximum flowrate, and at the pressure difference related to the maximum flowrate. For BVUs, the total electric power input is the sum of the electric power input measured per individual fan, including controllers (but without frost protection). Accordingly, the ‘30W per air stream’, cf. Article 1 (b), means that Regulation (EU)1253/2014 shall not apply to BVUs with a total electric power input of less than 60 W, except for information requirements. The limit of ‘30W per air stream’ also applies to alternating BVUs. For maximum flowrate, see the question: ‘What is the flowrate (maximum, reference or nominal) for an alternating BVU?’
Electric power input is:
- Not power in the Best Efficiency Point (BEP) according EU 327/2011 (Fan Regulation);
- Not maximum power written on the name plate of the fan within the unit; and
- Not always the same as the power on the name plate of the entire unit, as this may also include the power of additional components like pre- and after-heater, etc.
Please note that the scope of the Energy Labelling Regulation (EU) 1254/2014 does not exclude BVUs with electric power input less than 30 W per air stream.
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.