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RWR-N (RAL9016) • Circular swirl diffuser with fixed blades

  • Cairox
  • Swirl diffuser
  • Circular
  • Steel
  • White, RAL 9016
  • Fixed blades

Circular swirl ceiling diffuser with fixed blades

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

  • Fixed blades

Mounting

  • Fixing with central screw into the crossbar of the plenum box

Accessories

  • Plenum box, type RER-LB
  • Insulated plenum box, type RER-LB ISO
  • Regulating valve for plenum box, type CRC
  • Mounting crossbar for direct duct mounting, type FGN
  • Mounting crossbar for direct ceiling mounting, type FHN

Order Example

  • RWR-N, 315 + RER-LB + CRC 250

Explanation

RWR-N = Diffuser type

315 = Diffuser size (Ø diffuser neck connection)

Accessories

RER-LB = Plenum box

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

Dimensions

RWR-N

ØD1 [mm]

ØD2 [mm]

#Blades

125

123

171

8

160

158

214

10
200

198

264

12

250

248

326

14

315

313

404

16

355

353

448

17

400

398

500

18

500

498

596

20

Quick selection

RWR-N125160200250315355400500
QAk0.00990.01230.01760.02260.0330.03590.050.0618
B1.22.43.61.22.43.61.22.43.61.22.43.61.22.43.61.22.43.61.22.43.61.22.43.6
50 H=2.70.080.050.04                     
VzH=3.20.060.040.04                     
 H=3.80.040.040.03                     
Vk1.4       
X0.250.5       
Ps11       
Lw(A)<20       
100 H=2.70.150.110.080.140.10.080.110.080.06               
VzH=3.20.110.090.070.10.080.060.090.070.05               
 H=3.80.090.070.060.080.060.050.070.050.05               
Vk2.82.31.6     
X0.250.90.80.7     
Ps45196     
Lw(A)3526<20     
150 H=2.70.230.160.130.210.150.110.170.120.10.150.110.08            
VzH=3.20.170.130.110.150.120.10.130.10.080.110.090.07            
 H=3.80.130.110.090.120.10.080.10.080.070.090.070.06            
Vk4.23.42.41.8    
X0.251.41.210.9    
Ps10041145    
Lw(A)463824<20    
200 H=2.70.310.220.170.270.20.150.230.160.130.20.140.110.170.120.090.180.130.1      
VzH=3.20.230.180.140.210.160.130.170.130.110.150.120.090.130.10.080.130.10.08      
 H=3.80.180.140.120.160.130.110.130.110.090.120.090.080.10.080.070.10.080.07      
Vk5.64.53.22.51.71.5  
X0.251.81.61.41.211.1  
Ps1787225932  
Lw(A)54463222<20<20  
300 H=2.7      0.340.250.190.30.220.170.250.180.140.270.190.150.230.160.13   
VzH=3.2      0.260.20.160.230.170.140.190.140.120.20.160.130.170.130.11   
 H=3.8      0.20.160.140.170.140.120.140.120.10.160.130.110.130.110.09   
Vk  4.73.72.52.31.7 
X0.25  2.11.81.51.61.4 
Ps  5420642 
Lw(A)  4333<20<20<20 
400 H=2.7         0.40.290.220.330.240.190.360.260.20.30.220.170.240.170.13
VzH=3.2         0.30.230.190.250.190.160.270.210.170.230.180.140.180.140.11
 H=3.8         0.230.190.160.190.160.130.210.170.140.180.140.120.140.110.09
Vk   4.93.43.12.21.8
X0.25   2.422.21.81.4
Ps   3512843
Lw(A)   412723<20<20
500 H=2.7            0.420.30.230.450.320.250.380.270.210.290.210.16
VzH=3.2            0.310.240.20.340.260.210.290.220.180.220.170.14
 H=3.8            0.240.20.160.260.210.180.220.180.150.170.140.12
Vk    4.23.92.82.2
X0.25    2.52.72.31.8
Ps    181374
Lw(A)    3330<20<20
600 H=2.7            0.50.360.280.540.390.30.460.330.250.350.250.2
VzH=3.2            0.380.290.240.40.310.250.340.260.210.270.20.17
 H=3.8            0.290.240.20.310.250.210.260.210.180.20.170.14
Vk    5.14.63.32.7
X0.25    33.22.72.1
Ps    261896
Lw(A)    383522<20
800 H=2.7                  0.610.440.340.470.340.26
VzH=3.2                  0.460.350.290.350.270.22
 H=3.8                  0.350.290.240.270.220.19
Vk      4.43.6
X0.25      3.72.8
Ps      1611
Lw(A)      3022
1000 H=2.7                  0.760.540.420.590.420.33
VzH=3.2                  0.570.440.360.440.340.28
 H=3.8                  0.440.360.30.340.280.23
Vk      5.64.5
X0.25      4.63.5
Ps      2617
Lw(A)      3628
1200 H=2.7                     0.710.510.39
VzH=3.2                     0.530.410.33
 H=3.8                     0.410.330.28
Vk       5.4
X0.25       4.2
Ps       24
Lw(A)       33

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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