Air handling units (AHU) for non-residentialventilation; (NRVU) > 250 [m³/h]
What does it mean?
For BVU’s (Bidirectional Ventilation Unit): AHU’s used in a balanced ventilation systemin a building (fans in supply-air and fans in extract-air) have to be equipped with a heat recovery system (HRS) and to contain filters in supply and extract-air. On top of that the electrical power consumption of the fans regarding these demands are restricted.
For UVU’s (Unidirectional Ventilation Unit): AHU’s which are part of a hybrid ventilation system (fans combined with natural supply or exhaust), have to meet minimum static fan efficiency, a F7 filter in supply air and a maximum power demand of the fan related to the ‘supply-filter’.
This Regulation shall not apply to ventilation units which:
Specific ecodesign requirements for non residential ventilation units from 01.01.2016 (intensification 2018)
Important terms and abbreviations
Air handling units (AHU): consisting at least of impeller, motor und casing
Residential ventilation unit (RVU): at air-flows up to 250 resp. 1.000 m³/h
Non-residential ventilation unit (NRVU): at air-flows above 1000 resp. 250 m³/h (at air-flows between 250 and 1000 m³/h the manufacturer has to declare if it is a RVU or a NRVU)
Heat recovery system (HRS): as part of a bidirectional ventilation unit
Unidirectional ventilation unit (UVU): Ventilation unit with only one air-flow (supply or exhaust), balanced by natural air supply or exhaust (over- or underpressure)
Bidirectional ventilation unit (BVU): ventilation unit with supply and exhaust air-flow (withboth supply and exhaust fans)
Multi-speed-drive (Multi-stage operation): min. 3 steps or more plus zero (off)
Speed controllable: stepless via integrated or external control unit