EN (Generation 3) with actuator
Application
Special features
Nominal sizes
Variants
Construction
Parts and characteristics
Attachments
Useful additions
Construction features
Materials and surfaces
Galvanised sheet steel construction
Powder-coated construction (P1)
Variant with acoustic cladding (-D)
Mineral wool
Acc. to EN 13501, fire rating class A1, non-combustible
RAL quality mark RAL-GZ 388
Non-hazardous thanks to high biosolubility according to the German Ordinance on Hazardous Substances and Note Q of the European Regulation (EC) No. 1272/2008
Standards and guidelines
Meets the hygiene requirements of
Casing air leakage
Maintenance
Maintenance-free as construction and materials are not subject to wear
① Damper blade
② Bellows
③ Bellows inlet
④ Scale sticker
⑤ Visual display of the damper blade position
⑥ Rotary knob
⑦ Actuator (optional)
Functional description
The air terminal unit is a mechanical self-powered unit and works without external power supply. A damper blade with low-friction bearings is adjusted by aerodynamic forces so that the set volume flow rate is kept constant within the differential pressure range. The aerodynamic forces of the airflow create a closing torque on the damper blade. An inflating bellows amplifies this force and at the same time acts as a damping element. The closing torque is countered by a leaf spring that unrolls over a cam plate. The cam plate is adapted in such a way that the damper blade moves when the differential pressure changes. As a result, the volume flow rate remains constant within narrow tolerances.
Efficient commissioning
Using the rotary knob, the desired volume flow setpoint can be set quickly on the external scale, no prior measurement required. The advantage over conventional flow adjustment dampers is that no repeated measurements or adjustments during commissioning are required. Should the system pressure change, e.g. by opening or closing of duct sections, the flow rates in the entire system will also change if flow adjustment dampers are used; however, this is not the case with mechanical self-powered air terminal units. The air terminal unit reacts immediately and keeps the set air volume constant.
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Siamo qui per te
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Tel.: +41 26 425 59 00 | Fax: +41 55 250 73 10 | Fax Fribourg: +41 26 425 59 01
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Grazie per il tuo messaggio!
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Per domande di carattere generale riguardanti i nostri prodotti o servizi, è possibile contattare:
Tel.: +41 26 425 59 00 | Fax: +41 55 250 73 10 | Fax Fribourg: +41 26 425 59 01