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PS/RWR-FSA (RAL9016) • Square swirl diffusers with fixed blades for suspended ceilings

Swirl ceiling diffusers with high induction rate, consisting of a square plate for suspended ceilings with multiple fixed blades arranged in a circular pattern, to be equipped with galvanized steel plenum box.

Brand

  • Cairox

Application

  • For air supply and exhaust in ventilation and air conditioning systems

Material

  • Steel

Colour

  • Standard colour white, RAL 9016
  • Other colours available upon request

Composition

  • Front plate made of powder coated steel
  • Central screw mounting

Mounting

  • Fixing by central screw in the crossbar of the plenum box

Accessories

  • Square plenum box, type REV-B
  • Square insulated plenum box, type REV-B ISO
  • Circular plenum box, type RER-B
  • Insulated circular plenum box, type RER-B ISO
  • Regulating valve for plenum box,type CRC

  • Polystyrene plenum box, type PPS-P with duct connection PPS-APD and mounting bar PPS-MB

Order example

  • PS/RWR-FSA, 400 + RER-B 400 + CRC 200

    • Explanation

    PS/RWR-FSA = Diffuser type

    400 = Diffuser size

    Accessories

    RER-B = Plenum box type

    400 = Size plenum box

    CRC = Regulating valve for plenum box
    200 = Plenum box connection diameter 200

Dimensions

 D [mm]D1 [mm]D2 [mm]D3 [mm]#Blades
PS/RWR-FSA 30023810023659628
PS/RWR-FSA 40033815033659630
PS/RWR-FSA 50043815043659632

Quick selection

PS/RWR-FSA300400500
QAk0.010.0160.033
B1.22.43.61.22.43.61.22.43.6
100 H=2.70.20.150.120.150.110.09   
VzH=3.20.150.120.10.110.090.07   
 H=3.80.120.10.080.090.070.06   
Vk2.81.7 
X0,251.20.8 
Ps32 
Lw(A)<20<20 
150 H=2.70.30.220.170.220.170.130.160.120.1
VzH=3.20.230.180.150.170.140.110.130.10.08
 H=3.80.180.150.130.140.110.10.10.080.07
Vk4.22.61.3
X0,251.81.30.9
Ps853
Lw(A)3021<20
200 H=2.7   0.30.220.180.210.160.13
VzH=3.2   0.230.180.150.160.130.11
 H=3.8   0.180.150.130.130.110.09
Vk 3.51.7
X0,25 1.91.2
Ps 94
Lw(A) 28<20
250 H=2.7   0.370.270.220.260.20.16
VzH=3.2   0.290.230.190.20.160.14
 H=3.8   0.230.190.160.160.140.12
Vk 4.32.1
X0,25 2.31.6
Ps 137
Lw(A) 3322
300 H=2.7      0.310.230.19
VzH=3.2      0.240.190.16
 H=3.8      0.190.160.14
Vk  2.5
X0,25  1.9
Ps  10
Lw(A)  27
400 H=2.7      0.420.320.25
VzH=3.2      0.330.260.22
 H=3.8      0.260.220.19
Vk  3.4
X0,25  2.7
Ps  18
Lw(A)  35
500 H=2.7      0.520.390.31
VzH=3.2      0.410.320.27
 H=3.8      0.320.270.23
Vk  4.2
X0,25  3.5
Ps  27
Lw(A)  40

Symbols and specifications

  • Q = Air volume in m³/h
  • Ak = Effective surface (free area) in m²
  • B = Distance between the diffusers in m
  • H = Installation height of the diffusers in m
  • Vz = Maximum velocity at the occupied zone according to distance between the diffusers and installation height in m/s
  • Vk = Average effective velocity through the diffuser in m/s
  • X0.25 = Throw length in m at an end velocity Vt of 0,25m/s
  • Ps = Static pressure loss given in Pa
  • Lw(A) = Acoustic power in dB(A)


  • The throw X0.25 is given at an end velocity of 0.25m/s for a smooth ceiling without any obstacles.
  • The values are given for isothermal supply air. Throw distances for cooling conditions at -11K can be calculated by dividing the X0.25 values with factor 1.1. For heating purposes at Dt of +11K a multiplier of 1.1 should be applied to the given X0.25 value.
  • In order to achieve a high comfort level, selections can be made according to the maximal velocity at the occupied zone Vz. These values are given at distances between diffusers B and installation heights H. Velocities Vz lower than, or equal to 0,25m/s at the occupied zone are advised.
  • The pressure losses Ps are given for diffusers without damper of with fully opened damper.
  • The acoustic power values Lw(A) are given for diffusers without damper of with fully opened damper without room attenuation. Acoustic powers below 20dB(A) are mentioned as "<20" in the tables.
  • For all special requirements, please contact our engineering office.


Placement instruction
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