RFD-Q-D
Circular diffuser face
With air outlet nozzle
Without air outlet nozzle
Horizontal swirling air discharge
Circular and square ceiling swirl diffusers
Optional equipment and accessories
Connection
Only RFD-R
Only RFD-R-D
Standards and guidelines
Maintenance
Functional description
Ceiling swirl diffusers allow the supply air from ventilation systems to flow into the room in a swirl pattern. The resulting airflow induces high levels of room air, thereby rapidly reducing the airflow velocity and the temperature difference between supply air and room air. Ceiling swirl diffusers allow for large volume flow rates. The result is a mixed flow ventilation in comfort zones, with good overall room ventilation, creating only very little turbulence in the occupied zone.
Type RFD ceiling swirl diffusers have fixed blades. Air discharge is horizontal with an omni-directional flow. The supply air to room air temperature difference may range from –12 to +10 K.
A damper blade (optional) simplifies volume flow rate balancing for commissioning. Pressure tap and cord-operated damper blade (optional) allow for volume flow rate balancing with the diffuser face in place.
To give rooms an aesthetic, uniform look, Type RFD diffusers may also be used for extract air.
Nominal sizes | 125, 160, 200, 250, 315, 400 mm |
Minimum volume flow rate, with ΔtZ = –6 K | 4 – 36 l/s or 14 – 130 m³/h |
Maximum volume flow rate, with LWA ≅ 50 dB(A) | 22 – 330 l/s or 79 – 1188 m³/h |
Supply air to room air temperature difference | –12 to +10 K |
This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design program.
Ceiling swirl diffusers with square or circular diffuser face. Supply air and extract air variants for comfort zones and industrial zones. Diffuser face with fixed air control blades for horizontal swirling supply air discharge creating high induction levels. Ready-to-install component which consists of the diffuser face with radially arranged fixed air control blades and either a spigot only or a plenum box with side entry or top entry spigot, and suspension holes or suspension lugs. The diffuser face is fixed to the cross bar with a central screw. Spigots are suitable for ducting according to EN 1506 or EN 13180. Sound power level of the air regenerated noise measured according to EN ISO 5135.
Special characteristicsLife cycle assessment
A life cycle assessment is available for the product series in form of an Environmental Product Declaration (EPD) that has been checked and published by a programme holder.
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Siamo qui per te
Specifichi il suo messaggio ed il tipo di richiesta
Tel.: +41 26 425 59 00 | Fax: +41 55 250 73 10 | Fax Fribourg: +41 26 425 59 01
Contatti
Grazie per il tuo messaggio!
Il tuo messaggio è stato inviato e sarà processato a breve.
Il nostro dipartimento per la gestione delle richieste ti contatterà appena possibile.
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
