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Swirl Diffusers - 17 Pages
Installation • Fixing
Because of their excellent performance, type RFD swirl
diffusers can be installed flush with a continuous ceiling or
freely suspended (with discharge nozzle). Installation is also
possible on stub ducts or suspended above a grid ceiling.
For the suspended versions of the top or side entry plenums
neck, transition piece and plenum box are fitted with
suspension holes resp. suspension lugs.
For ceiling panels up to 20 mm thickness, clamp fixing is
possible without additional support from the slab ceiling
itself.
Ensure that the ceiling panels are stable.
Materials
The diffuser face and side entry plenum boxes are made
of rolled galvanised sheet steel.
The discharge nozzle ring is made of sheet steel and the top
entry spigot is made of aluminium.
The surfaces of the face plate and discharge nozzle are
pre-treated and powder-coated white (RAL 9010).
Construction | Cutout in ceiling 0 DA Sizes 125 160 200 250 315 400 |
RFD-Q with nozzle | 170 205 233 283 380 480 |
RFD-Q without nozzle | 140 175 215 265 330 415 |
RFD-R with nozzle | 170 205 245 295 380 480 |
RFD-R without nozzle | 140 175 215 265 330 415 |
RFD-R-UD with nozzle | 165 200 240 290 375 460 |
RFD-R-UO without nozzle | 125 160 200 250 315 400 |
Mounting
on a duct
Mounting with
hangers
0DA
Mounting of front face
with central fixing bolt
(clamp fixing) Type ...UO
Arrangement above open
grid (raster) ceilings
vzz*
Mounting of front face
with central fixing bolt
Mounting of front face
with central fixing bolt
(clamp fixing) Type ...UO
5
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2/4/EN/8Swirl DiffusersType RFDrecommended for use in rooms withceiling heights of approx. 2.60 . . . 4.00 mTROX GmbHHeinrich-Trox-PlatzD-47504 Neukirchen-VluynTelephone... -
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Contents • Description Description_ 2 Construction • Dimensions_ 3 Installation • Fixing_ 5 Materials_ 5 Nomenclature_... -
P. 3
Dependant on requirements of maximum volumetric flow, noise level and installation situation, swirl diffusers are available with or without discharge... -
P. 4
Construction • Dimensions The face section of the diffuser or side entry plenum box is demountable, held in position by a central fixing... -
P. 5
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P. 6
Nomenclature · Quick Selection · Spectral Data·V·VA, BXH1vH1Nomenclaturein l/s:in m3/h:in m:in m:in m:in m/s:Lin m:vLͬ tZin m/s:in... -
P. 7
Example Data given: Type RFD-R-D-US/125 Volume flow per diffuser V = 24 l/s Required: Octave band sound power level of regenerated noise... -
P. 8
Acoustic Data Correction to Diagram 3: Damper angleBlade angle0°45°90°Ap,x 1x 1.2x2.4 + 1+ 3 + 1+ 3 Correction... -
P. 9
Acoustic Data Correction to Diagram 7: Damper angle Correction to Diagram 9: Damper angle Blade angle 0° ... -
P. 10
Acoustic DataExampleData given:·Volume flow per diffuserV = 30 l/sSupply air temperature differential ͬ t Z = – 8 KSound pressure level...
