The information to be provided for NRVUs (non-residential ventilation units) according to Annex V of Regulation (EU) 1253/2014 should be based on the "reference configuration" of the product as indicated in Annex IX concerning measurements and calculations for NRVUs. Definitions for "reference configuration" are provided in Annex I, part 2, definition 3 and 4.
Nevertheless, manufacturers are under a legal obligation to ensure that any ventilation unit (i.e., deriving from any possible product combination) within the scope of the Ecodesign Regulation, shall meet the requirements within that regulation.
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.