PRODUCTS
EShop-number
Password
Welcome to CAIROX BELGIUM

RWR-N (RAL9005) • Black circular swirl diffusers with fixed blades

Circular swirl ceiling diffusers with fixed blades

Brand

  • Cairox

Application

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

Material

  • Steel

Colour

  • Colour black, RAL 9005
  • 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

Text for tender

Copy
  • The air supply diffusers are of the swirl type with fixed blades. They are made of steel with black powder coating RAL 9005 and supplied with a volume control damper in the plenum box.
  • Cairox type RWR-N RAL9005+RER-L

Order example

  • RWR-N RAL9005, 315 + RER-LB + CRC 250

Explanation

RWR-N RAL9005 = 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

1251231718
160

158

214

10
200

198

264

12

250

248

326

14

31531340416
35535344818
40039850018
50049859620

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
HELPCopyrightSales conditionsCookie policyfujitsu-airco.be

Requesting information. Please wait a moment...