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ASFD • Swirl diffusers for floor mounting

  • Floor grilles
  • Aluminium
  • Anodized natural finish
  • Swirl

Aluminium swirl floor diffusers with horizontal or vertical air diffusion pattern

Brand

  • Cairox

Application

  • Adjustable circular diffuser with swirl air supply, suitable for false floor installation. May be used in rooms with a variable or constant air volume

Material

  • Aluminium and steel

Colour

  • Anodized natural finish
  • Other colours available upon request

Composition

  • Removable inner grille and front grille manufactured in sanded aluminium
  • Dust basket (also to be used as volume damper) and swirl unit made from sheet steel
  • 3 Steel mounting straps for fixing of the diffuser frame into a floor tile

Mounting

  • To be mounted with 3 steel mounting straps for fixing of the diffuser frame into a floor tile

Text for tender

Copy
  • The air supply for rooms with variable or constant air volume can be made with circular diffuser with swirl air supply. Diffuser slots are designed to ensure a swirl air supply with high levels of induction, achieving reduced air velocities and a moderate temperature gradient in the occupied zone
  • Anodized natural finish
  • ATC Type ASFD

Order example

  • ASFD, 150

Explanation

ASFD = swirl floor diffuser

150= connection diameter (see table)

Technical data

Q 150200

Aeff [m2]

0,00495

0,00945

(m3/h)

(l/s)

DT [°C]

 -4 -6 -8 -4 -6 -8
30 8,3

h0.25[m]

0,8 0,7 0,6

Veff [m/s]

 1,7

DPest [Pa]

 6

LW [dB(A)]

< 20
35 9,7

h0.25[m]

0,9 0,8 0,7

Veff [m/s]

 2
DPest [Pa] 8

LW [dB(A)]

22
40 11,1

h0.25[m]

1,1 0,9 0,8

Veff [m/s]

 2.20
DPest [Pa] 11

LW [dB(A)]

25
45 12,5

h0.25[m]

1,2 1,0 0,9

Veff [m/s]

 2.50
DPest [Pa] 13

LW [dB(A)]

28
50 13,9

h0.25[m]

1,3 1,2 1,0 0,7 0,6 0,5

Veff [m/s]

 2,8 1,5
DPest [Pa] 17 3

LW [dB(A)]

31 <20
60 16,7

h0.25[m]

1,6 1,4 1,2 0,8 0,7 0,6

Veff [m/s]

 3.40 1.80
DPest [Pa] 24 5

LW [dB(A)]

35 20
70 19,4

h0.25[m]

1,9 1,6 1,4 0,9 0,8 0,7

Veff [m/s]

 3.90 2.10
DPest [Pa] 33 7

LW [dB(A)]

39 24
85 23,6

h0.25[m]

2.3021.701.1010.90

Veff [m/s]

 4.80 2.50
DPest [Pa] 48 10

LW [dB(A)]

43 29
100 27,8

h0.25[m]

2.702.3021.301.201

Veff [m/s]

 5.60 2.90
DPest [Pa] 67 14

LW [dB(A)]

47 33
115 31,9

h0.25[m]

1.501.301.20

Veff [m/s]

 3.40
DPest [Pa] 18

LW [dB(A)]

36
130 36,1

h0.25[m]

1.701.501.30

Veff [m/s]

 3.80
DPest [Pa] 23

LW [dB(A)]

39
150 41,7

h0.25[m]

21.701.50

Veff [m/s]

 4.40

DPest [Pa]

 31

LW [dB(A)]

43
170 47,2

h0.25[m]

2.3021.70

Veff [m/s]

 5
DPest [Pa] 40

LW [dB(A)]

46 

Symbols and specifications

  • Temperature difference Dt at -4, -6 and -8K
  • Y 0.25 = Vertical throw in m at vt = 0.25 m/s at Dt values
  • Ps = Static pressure loss in Pa
  • Lw (A)= Acoustic power in dB(A)
  • Q = Air Volume in m³/h
  • Ak= Effective area in m²
  • Vk = Effective velocity between the blades of the grille in m/s

Placement instruction

Dimensions

ASFD
A [mm]
B [mm]
C [mm]
E [mm]
MinMax
1501901541491432
200240204199
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