The design incorporates the standard ceiling manufacturer’s suspended ceiling tile as its faceplate (typically using 1.8mm holes, 20% free area or 2.2mm holes with 25% free area) and is therefore almost invisible once installed. In addition to this, the induction process is created millimetres from the face of the diffuser so room air is not induced into the plenum. As a result, the amount of dirty room air accumulated on the face is very low, ensuring the HD remains unobtrusive years after installation and will very rarely need cleaning – unlike conventional ceiling diffusers.
Through collaboration between Veltem and its business partner; Price Industries, using its world-class, 10,000m² research facility in Winnipeg, Canada, the HD (Hidden Diffuser) is quickly becoming the preferred Air Terminal Device with leading architects and designers when using perforated ceiling tiles.
So what’s it all about?
The design incorporates the standard ceiling manufacturer’s suspended ceiling tile as its faceplate (typically using 1.8mm holes, 20% free a
rea or 2.2mm holes with 25% free area) and is therefore almost invisible once installed. In addition to this, the induction process is created millimetres from the face of the diffuser so room air is not induced into the plenum. As a result, the amount of dirty room air accumulated on the face is very low, ensuring the HD remains unobtrusive years after installation and will very rarely need cleaning – unlike conventional ceiling diffusers.
To ensure the ceiling has minimal aesthetic intrusion, the same ceiling tiles, without scrim backing material, can also be used for return/extract air; removing the need for additional grilles/diffusers. Veltem also offers acoustic Return Air Canopies to remove cross talk or noise break out, if required. No longer will the spacing of diffusers be compromised when once the symmetrical appearance was preferred over the technically best possible layout.
Architectural dream
The HD has been referred to as an ‘architectural dream’ due to its unimposing design. This, coupled with its technical abilities with a large air volume range through various sizes and configurations, temperature differentials of ±10K, mounting heights from 2.5-4.5m, low sound power level and pressure loss (suitable for fan coil units) and high occupant comfort to EN ISO 7730, the HD is also the friend of the mechanical engineer.
All the usual features you would expect for ceiling mounted diffusers are also available, including small side entry plena for low or congested ceiling voids, dampers and internal lining. The HD can also be retrofitted with little modification to an existing ceiling system with Veltem also offering site installation with its experienced fitters.
For more information visit www.veltem.com or call 01206 827171