Application
Special characteristics
Nominal sizes
Other dimensions upon request
Variants
Front border
Fixing
Parts and characteristics
Attachments
Construction features
Materials and surfaces
Standards and guidelines
Nominal sizes
Other dimensions upon request
Functional description
Ventilation grilles are air terminal devices for the supply air and extract air of ventilation and air conditioning systems. They direct the supply air into the room. Ventilation grilles with adjustable blades allow for adapting the discharge direction to the local conditions. The result is a mixed flow ventilation in comfort zones and industrial zones, with good overall room ventilation.
Induction slows the airflow down, i.e. the airflow velocity decreases as the distance from the grille increases. The distance at which the airflow velocity reaches a certain defined value, e.g. 0.2 m/s, is called throw distance. The supply air jet from wall grilles that are installed near the ceiling achieves a larger throw distance than a free jet (from a grille that is not installed near the ceiling). Single grilles, groups of grilles and continuous horizontal runs all achieve different throw distances.
In cooling mode it is necessary to take account of the jet deviation towards the occupied zone, which increases as the supply air to room air temperature difference increases and the discharge velocity decreases. In heating mode the supply air jet deviates towards the ceiling. This has no negative effect on the airflow velocity in the occupied zone, but it may affect the complete ventilation of the room.
Nominal sizes | 225 × 75 to 1225 × 525 mm |
Minimum volume flow rate | 11 – 685 l/s or 40 – 2466 m³ /h |
Maximum volume flow rate, with LWA max. 40 dB(A) without attachments | 62 – 2000 l/s or 223 – 7200 m³ /h |
Supply air to room air temperature difference | –12 to +4 K |
Volume flow rates apply to supply air
Ventilation grilles, rectangular, made of aluminium, for supply and extract air. Aesthetic sloped border with chamfered inside edge Preferably for wall and sill installation but also suitable for rectangular ducts.
Ready-to-install component which consists of a border and individually adjustable, vertical blades.
Concealed screw fixing, spring clip fixing or countersunk holes, for installation into an installation subframe or fixing onto an installation surface.
Sound power level of the air-regenerated noise measured according to EN ISO 5135.
Special characteristics
Materials and surfaces
Construction
Materials and surfaces
Technical data
Sizing data
Air-regenerated noise
VAT | – | AG | / | 825 × 225 | / | A1 | / | B11 | / | P1 – RAL … |
| | | | | | | | | | | | |||||
1 | 2 | 3 | 4 | 5 | 6 | |||||
Attachments | Damper unit with opposed action blades and air direction control |
Nominal size | 825 × 225 mm |
Installation subframe | With installation subframe for 27 mm wide front border |
Installation | Concealed screw fixing |
Exposed surface | Anodised, E6-C-0, natural colour |
VAT | – | EF | – | AS | / | 825 × 225 | / | P1 – RAL … |
| | | | | | | | | | ||||
1 | 2 | 3 | 4 | 5 | ||||
E-EF | / | 825 × 225 |
| | | | |
1 | 2 | |
Installation and commissioning
These are only schematic diagrams to illustrate installation details.
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Contact
We are here for you
Please specify your message and type of request.
Tel.: +44 (0)1842 754545 | Fax: +44 (0)1842 763051
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.: +44 (0)1842 754545 | Fax: +44 (0)1842 763051