Application
Special characteristics
Nominal sizes
Variants
Construction
Classification
Useful additions
Construction features
Material and surfaces
Galvanised sheet steel construction
Powder-coated construction (P1)
Variant with acoustic cladding (-D)
Mineral wool
Standards and guidelines
Meets the hygiene requirements of
Casing air leakage
ATEX Directive 2014/34/EU
Maintenance
① Damper blade
② Bellows
③ Bellows inlet
④ Scale sticker
⑤ Connection for equipotential bonding
⑥ Visual display of the damper blade position
⑦ Rotary knob
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.
Air terminal units in rectangular design for constant air volume systems, mechanically self-powered, without external power supply, for supply or extract air, in 19 nominal sizes. Air terminal unit ready for commissioning, consisting of the casing with smooth-running control damper, control bellows and external cam disc with leaf spring as well as components for equipotential bonding and explosion protection. The air terminal units are factory adjusted and preset to a reference air volume. Sound power level measured according to DIN EN ISO 5135. Meets the hygiene requirements according to VDI 6022. Meets the requirements of ATEX Directive 2014/34 EU.
Special features
Materials and surfaces
Galvanised sheet steel construction
Powder-coated construction (P1)
Variant with acoustic cladding (-D)
Mineral wool
Construction
Technical data
Sizing data
Air-regenerated noise
Case-radiated noise
EN-Ex | – | D | – | P1 | / | 400 × 200 |
| | | | | | | | |||
1 | 2 | 3 | 4 |
Order example: EN-Ex-D-P1/400×200
Type | EN-Ex |
Acoustic cladding | with acoustic cladding |
Material | Powder-coated RAL 7001 (silver grey) |
Nominal size [mm] | Width 400, height 200 |
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Contact
We are here for you
Please specify your message and type of request
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265
Contact
Thank you for your message!
Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265