TWISTED SWIRL JET DIFFUSERS TWISTED 850 SERIES - STEEL Twisted 850 Air supply diffuser • Painted steel diffusion cone and central plate. • teel compensation plate suited to 600 x 600 mm, 625 x 625 mm S or 675 x 675 mm ceiling panels, with Tbar or Fine-Line frames. • ecorative mounting frame (white aluminium) for plaster ceiling D version. • ir supply model equipped with a fixed central plate serving as a A deflector. • xhaust model equipped with removable central plate and E elliptical filter. Access to filter by quick and easy opening of the central plate. • alvanised steel cylindrical plenum for direct connection to a G 200 mm-diameter circular duct. • ersion without plenum available for direct exhaust or direct V connection to D200 or D250 circular connection. Non-opening diffuser only. NB: use for exhaust only. DESIGN • igh-induction air diffusion using air jet rotation inside plenum. H By maintaining a sufficient discharge speed, the diffusion cone ensures a perfect Coanda effect (ceiling effect) and a swirl air jet. This swirl air jet will cause the ambient air to move, thereby mixing it with the air supply to ensure homogeneous temperatures in occupied areas. • Aldes patent. Twisted 850 diffuser for square panels W • ir supply or exhaust, high-induction fixed diffusion with swirl air jet. A • ide airflow range from a single size of diffuser. W • ystems offer high mixing rate. S • deal for cold and hot air supply (air conditioning) with high T° I differences under low ceiling heights. • deal for variable-airflow systems (ducted convector fans). I • eiling diffuser designed to replace 600 x 600 mm, 625 x 625 mm C or 675 x 675 mm suspended ceiling panels. • Suited to Tbar and Fine-Line frames. • ersion compatible with non-removable plaster or BA13 V plasterboard ceilings. Twisted 850 diffuser for plaster or BA13 plasterboard ceiling STANDARD DIMENSIONS Comfort airflow levels for Lw < NR 40 db(A) and dimensions Opening A B (mm) Ø W ØD Airflow Assembly A x B* (mm) (mm) (mm) (mm) D (mm) (m3/h) 150 to 600 x 600 366 200 298 600 150 to Suspended 625 x 625 366 200 298 600 ceilings 150 to 675 x 675 366 200 298 600 150 to 651 x Plaster / 366 200 298 600 x 600 600 651 BA1

TWISTED 850 SERIES - STEEL STANDARD DIMENSIONS Twisted 850 air supply Twisted 850 opening for plaster ceilings with exhaust filter FINISH • Epoxy paint finish RAL 9010 matt 30 % brightness . • Paint finish from RAL colour chart . View the list of available colours in the appendix ATTACHMENT • Attachment to concrete ceiling using brackets on the plenum . Note: the weight of the diffuser must not be borne by the suspended ceiling frame . • Attachment to plenum for F7 bridge on plaster version (optional) . • Special finish on request . ACCESSORIES • G2 elliptical flat filter supplied with the exhaust...

TWISTED SWIRL JET DIFFUSERS Standard range Dimensions • Concealed using brackets sealed into concrete slab . • Steel with epoxy paint coating RAL 9010 white matt 30 % brightness . The Lw (dB(A)) values do not take into account any noise attenuation in the room . Vt = 0.37 m/s Tests conducted with standard plenum SELECTION - EXHAUST WITHOUT FILTER Ak (m2) The Lw (dB(A)) values do not take into account any noise attenuation in the room Tests conducted without plenum (direct model 0 250) and with the standard plenum (Pa2) SELECTION - EXHAUST - G2 FILTER ONLY Ak (m2)

The Lw (dB(A)) values do not take into account any noise attenuation in the room Tests conducted with standard plenum

TWISTED SWIRL JET DIFFUSERS TWISTED 850 SERIES - EXHAUST PRESSURE DROP FILTER ONLY 25 The Lw (dB(A)) values do not take into account any noise attenuation in the room Tests conducted without plenum (direct model ø 250) and with the standard plenum (Pa2)