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PRN • Round ceiling diffusers

Round ceiling diffusers with fixed diffusion rings

Application

  • Used for air supply and exhaust in ventilation and air conditioning systems.

Material

  • Aluminium

Colour

  • White, RAL 9010

Composition

  • Fixed diffusion rings

Mounting

  • Fixing directly on the collar
  • Fixing with central screw

Accessories

  • Plenum box type RER-LB
  • Plenum box type RER-LB ISO
  • Plenumbox connection valve type CRC
  • Crossbar for ceiling mounting type FHN
  • Crossbar for mounting in circular duct type FGN
  • Butterfly volume control damper for mounting on the neck of the diffuser, type DR

Text for tender

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  • The circular ceiling diffusers have fixed diffusion blades. They are made of aluminium with white powder coating finish RAL 9010 and supplied with a volume control damper in the plenumbox.
  • ATC Type PRN+RER-L

Order example

  • PRN, 200 + RER-LB + CRC 160

 

Explanation

PRN = Diffuser type

200 = Diffuser size (Ø diffuser neck connection)

 

Accessories

RER-LB = Plenumbox

CRC = Plenumbox connection valve
160 = Plenumbox connection diameter 160

Dimensions

PRN

ØC [mm]

ØB [mm]

ØD [mm]

160

247

213

159

200

287

264

199

250

337

315

249

315

402

366

314

355

442

417

354

400

487

462

399

Quick selection

 Type160200250315355400
QvAk (m2)0.00920.01380.02060.03120.03860.0477
150Veff4.53    
Lth1.41.1    
Ps84    
Lw<20<20    
200Veff642.71.8  
Lth1.81.51.21  
Ps14631  
Lw25<20<20<20  
250Veff7.553.42.21.8 
Lth2.31.91.51.21.1 
Ps2210421 
Lw3222<20<20<20 
300Veff9.1642.72.21.7
Lth2.82.31.81.51.31.2
Ps32146321
Lw3929<20<20<20<20
400Veff 8.15.43.62.92.3
Lth 32.521.81.6
Ps 2511532
Lw 3929<20<20<20
500Veff 10.16.74.53.62.9
Lth 3.83.12.52.22
Ps 4018853
Lw 47372722<20
600Veff  8.15.34.33.5
Lth  3.732.72.4
Ps  261175
Lw  43332823
800Veff   7.15.84.7
Lth   43.63.2
Ps   20138
Lw   433833
1000Veff    7.25.8
Lth    4.54
Ps    2013
Lw    4640

Symbols and specifications

  • Values at ceiling height of 3 m
  • Temperature difference Dt = 0K
  • Veff = Effective velocity in m/s
  • Lth 0.25 = horizontal throw in m at vt = 0.25 m/s
  • Ps = Static pressure loss in Pa
  • Lw = Acoustic power in dB(A)
  • Qv = Air Volume in m³/h
  • 160 to 400 = diffuser size
CopyrightSales conditions

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