VSD50

With wide diffuser face for larger volume flow rates

Slot diffusers with 50 mm diffuser face (nominal width) and adjustable air control elements

  • Nominal length from 600 to 1950 mm, 1 to 2 slots
  • Volume flow rate range 20 – 120 (l/s)/m or 72 – 432 (m³/h)/m
  • Diffuser face made of extruded aluminium sections
  • For variable and constant volume flows
  • Suitable for continuous linear arrangement
  • High induction results in a rapid reduction of the temperature difference and airflow velocity
  • Individually adjustable air control elements to meet individual local requirements


Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colours
  • Diffuser face with extended border
  • Damper blade for volume flow rate balancing, can be adjusted through the diffuser face
  • Concealed screw fixing that simplifies installation of the diffuser after the ceiling has been completed
  • Symmetric and asymmetric plenum boxes, with or without lining
  • End plates, end angles, corner sections

VSD50-1-AK 00134738_0


  • Application
  • Description

Application

  • Type VSD50 slot diffusers are used as supply air or extract air devices in comfort zones
  • Air discharge is one-way or alternating horizontal, or alternating angled; turbulent flow (mixed flow ventilation)
  • High induction results in a rapid reduction of the temperature difference and airflow velocity (supply air variant)
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –10 to +10 K
  • For room heights up to 4 m (lower edge of suspended ceiling)
  • For suspended ceilings; suitable for restricted ceiling voids due to the low overall height of the plenum box
  • Suitable for continuous linear arrangement

Special characteristics

  • Individually adjustable air control elements to meet individual local requirements
  • High induction results in a rapid reduction of the temperature difference and airflow velocity
  • Diffuser face has been optimised for maximum volume flow rate at low sound power levels
  • Suitable for continuous linear arrangement

Nominal sizes

  • LN: 600, 750, 900, 1050, 1200, 1350, 1500, 1650, 1800, 1950 mm
  • Diffuser face available in intermediate sizes from 300 to 2550 mm, in increments of 1 mm

Variants

  • VSD50-*: 1 or 2 slots
  • VSD50-*-F: Diffuser face only
  • VSD50-*-E: Corner section
  • VSD50-...: Diffuser face without extended border
  • VSD50-.../B00: Diffuser face with extended border
  • VSD50-...: Black air control elements
  • VSD50-.../WW: White air control elements


Plenum box and diffuser face fixing

  • AK: Plenum box and clamp fixing
  • DK: Plenum box with lining and clamp fixing
  • AS: Plenum box and concealed screw fixing
  • DS: Plenum box with lining and concealed screw fixing
  • AA: Asymmetric plenum box and clamp fixing

Parts and characteristics

  • Diffuser face with individually adjustable air control elements
  • Plenum box for horizontal duct connection
  • Concealed screw fixing (facilitates installation of the diffuser face) or clamp fixing
  • Connecting pins and alignment plates to connect and align slot diffusers for a continuous linear arrangement

Attachments

  • M: Damper blade for volume flow rate balancing
  • C1, C2: Two end plates
  • C5, C6: Two end angles

Accessories

  • Lip seal

Useful additions

  • EP: Two end plates
  • EW: Two end angles
  • To be ordered separately for continuous linear runs

Construction features

  • Spigot suitable for circular ducts to EN 1506 or EN 13180
  • Spigot with groove for lip seal (if accessory lip seal has been ordered)

Materials and surfaces

  • Diffuser face made from extruded aluminium sections
  • Air control elements made of plastic, UL 94, V-0, flame retardant
  • Plenum box made of galvanised sheet steel
  • End plate and end angle made of aluminium
  • Lip seal made of rubber
  • Lining is mineral wool
  • Diffuser face with anodised finish, E6-C-0, natural colour
  • P1: Powder-coated, RAL CLASSIC colour
  • Air control elements similar to RAL 9005, black
  • WW: Air control elements similar to RAL 9010, white


Mineral wool

  • To EN 13501, fire rating class A1, non-combustible
  • RAL quality mark RAL-GZ 388
  • Biosoluble and hence hygienically safe according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC
  • Faced with glass fibre fabric as a protection against erosion through airflow velocities of up to 20 m/s
  • Inert to fungal and bacterial growth

Standards and guidelines

  • Sound power level of the air-regenerated noise measured according to EN ISO 5135

Maintenance

  • Maintenance-free as construction and materials are not subject to wear
  • Inspection and cleaning to VDI 6022

Technical information

Function, Technical data, Quick sizing, Specification text, Order code

  • Function
  • Technical data
  • Quick sizing
  • Specification text
  • Order code

Functional description

Slot diffusers direct the air from air conditioning systems into the room, either horizontally or at an angle. The resulting airflow induces high levels of room air, thereby rapidly reducing the airflow velocity and the temperature difference between supply air and room air. The result is a mixed flow ventilation in comfort zones, with good overall room ventilation, creating only very little turbulence in the occupied zone.

Type VSD50 slot diffusers have adjustable air control elements. The air pattern can be adjusted to meet different local requirements. Air discharge is one-way or alternating horizontal. Heating mode with angled air discharge is also possible. The supply air to room air temperature difference may range from –10 to +10 K.

A damper blade (optional) simplifies volume flow rate balancing for commissioning.

To give rooms an aesthetic, uniform look, Type VSD50 diffusers may also be used for extract air.

Nominal length

600, 750, 900, 1050, 1200, 1350, 1500, 1650, 1800, 1950 mm

Number of slots

1, 2

Neck extension

0, 25, 50, 75, 100, 125 mm

Minimum volume flow rate

20 – 40 (l/s)/m or 72 – 144 (m³/h)/m

Maximum volume flow rate, with LWA ≅ 50 dB(A)

70 – 120 (l/s)/m or 252 – 432 (m³/h)/m

Supply air to room air temperature difference

–10 to +10 K


Quick sizing tables provide a good overview of the volume flow rates and corresponding sound power levels and differential pressures.

The maximum volume flow rates apply to a sound power level of approx. 50 dB (A) with damper blade position 0°.

Exact values for all parameters can be determined with our Easy Product Finder design programme.

VSD50-1, supply air, alternating horizontal air discharge, sound power level and total differential pressure

Nominal length V Damper blade position
Nominal length V 45° 90°
Nominal length V D = 123 D = 158 D = 123 D = 158 D = 123 D = 158
Nominal length V Δpt LWA Δpt LWA Δpt LWA Δpt LWA Δpt LWA Δpt LWA
Nominal length l/s m³/h Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A)

600

11

38

4

<15

3

<15

5

<15

4

<15

7

<15

4

<15

600

25

90

19

31

17

28

25

32

20

28

36

32

24

28

600

40

144

49

45

44

42

65

46

50

42

91

46

60

42

600

50

180

77

52

69

49

101

53

78

49

143

54

93

50

750

15

54

5

<15

4

<15

7

15

5

<15

11

15

7

12

750

30

108

20

33

17

29

28

33

20

29

43

34

25

29

750

40

144

35

41

30

37

50

42

35

37

77

42

45

38

750

55

198

65

51

56

47

94

52

66

48

145

53

85

48

900

15

54

4

<15

3

<15

6

<15

4

<15

10

<15

5

<15

900

35

126

20

34

17

30

32

34

21

30

53

35

28

31

900

50

180

41

44

33

41

65

45

42

41

107

46

58

41

900

65

234

70

53

56

49

110

54

71

49

181

55

97

50

1050

20

72

6

17

4

<15

9

17

6

<15

16

18

8

<15

1050

40

144

22

35

17

31

37

36

22

32

64

37

32

32

1050

55

198

41

45

31

41

70

45

42

41

120

46

60

42

1050

70

252

66

52

50

48

113

53

68

49

195

55

98

50

1200

25

90

7

20

5

17

13

21

8

17

24

21

11

17

1200

40

144

19

33

13

29

34

34

19

29

61

34

29

30

1200

55

198

35

42

25

38

64

43

36

39

114

44

54

39

1200

75

270

64

52

47

48

118

53

67

48

212

54

101

49

1350

25

90

7

19

5

15

13

19

7

15

23

20

11

15

1350

45

162

21

34

14

30

40

35

21

31

74

36

34

31

1350

65

234

43

45

29

41

83

46

44

42

154

47

70

42

1350

80

288

65

52

44

48

126

53

67

48

233

54

106

49

1500

30

108

8

22

6

18

17

22

9

18

32

23

14

19

1500

50

180

23

36

15

31

47

37

24

32

89

37

39

33

1500

70

252

45

46

29

41

92

47

47

42

174

48

77

43

1500

85

306

66

52

43

47

135

53

69

48

256

55

113

49

1650

30

108

5

18

4

<15

7

18

5

<15

11

19

6

<15

1650

50

180

13

31

11

28

20

32

13

28

31

33

18

28

1650

75

270

29

43

24

40

44

44

30

40

70

45

39

40

1650

100

360

51

52

43

49

78

53

52

49

124

54

69

50

1800

35

126

6

20

5

17

9

21

6

17

15

21

8

17

1800

58

210

16

34

13

30

25

35

16

31

40

36

22

31

1800

82

294

30

44

25

40

48

45

31

41

79

46

42

41

1800

105

378

50

52

41

48

79

53

51

49

130

54

70

50

1950

35

126

5

19

4

16

8

20

5

16

14

20

7

16

1950

60

216

15

34

12

30

24

34

15

30

41

35

21

31

1950

85

306

30

44

23

40

49

45

30

41

82

46

42

41

1950

110

396

49

52

39

48

81

53

51

49

137

55

71

50


VSD50-2, supply air, alternating horizontal air discharge, sound power level and total differential pressure

Nominal length V Damper blade position
Nominal length V 45° 90°
Nominal length V D = 158 D = 198 D = 158 D = 198 D = 158 D = 198
Nominal length V Δpt LWA Δpt LWA Δpt LWA Δpt LWA Δpt LWA Δpt LWA
Nominal length l/s m³/h Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A)

600

25

90

5

17

5

<15

8

17

6

<15

11

17

7

<15

600

45

162

17

32

15

29

24

33

18

29

37

33

23

29

600

65

234

35

43

31

40

50

44

37

40

76

45

47

41

600

85

306

60

52

52

49

85

53

62

49

130

54

80

50

750

30

108

6

18

5

<15

9

18

6

<15

14

19

8

15

750

50

180

15

31

12

28

24

32

16

28

39

33

22

29

750

80

288

38

45

31

42

61

46

41

42

100

47

56

43

750

100

360

60

53

49

49

95

54

63

50

156

55

88

51

900

35

126

6

19

5

16

10

19

6

16

18

20

9

16

900

60

216

17

34

13

30

30

34

18

30

52

35

27

31

900

85

306

34

44

26

40

60

45

37

41

104

46

55

42

900

110

396

57

52

44

49

100

53

61

49

174

55

91

50

1050

40

144

7

20

5

17

12

21

7

17

22

21

11

17

1050

65

234

17

33

12

30

32

34

18

30

58

35

29

31

1050

90

324

32

43

23

39

61

44

35

40

110

45

55

41

1050

120

432

57

52

41

48

108

53

62

49

196

55

98

50

1200

45

162

7

21

5

18

14

22

8

18

27

23

13

18

1200

70

252

17

33

12

30

34

34

19

30

64

35

31

31

1200

100

360

35

44

24

40

70

45

38

41

131

46

63

42

1200

130

468

58

52

40

48

118

54

64

49

222

55

106

50

1350

50

180

8

22

5

19

17

23

9

19

32

24

15

19

1350

80

288

20

35

13

31

43

36

22

32

82

37

38

33

1350

110

396

38

45

25

41

80

46

42

42

155

47

72

43

1350

140

504

61

52

40

48

130

54

68

50

250

56

116

51

1500

55

198

9

23

6

19

20

24

10

20

38

25

17

20

1500

90

324

23

37

15

33

52

38

26

34

102

39

46

35

1500

125

450

45

47

28

43

100

48

50

44

196

50

89

45

1500

150

540

65

53

40

49

144

54

72

50

282

56

128

51

1650

60

216

5

21

4

18

9

22

6

18

15

22

8

18

1650

95

342

13

34

11

31

22

35

14

31

37

36

20

31

1650

135

486

26

45

21

41

44

46

28

42

75

47

41

42

1650

175

630

44

53

35

49

74

54

47

50

126

56

68

51

1800

65

234

6

22

4

19

10

23

6

19

17

23

9

19

1800

105

378

14

36

11

32

25

36

16

32

44

37

23

33

1800

145

522

27

45

21

42

48

46

29

42

83

47

44

43

1800

185

666

44

53

34

50

78

54

48

50

135

56

71

51

1950

70

252

6

23

5

19

11

24

6

20

19

24

10

20

1950

110

396

14

36

11

32

26

36

16

32

47

37

24

33

1950

150

540

27

45

20

41

48

46

29

42

86

47

44

43

1950

190

684

43

52

32

49

78

54

46

50

138

55

71

51


Slot diffusers with individually manually adjustable air control elements and an aesthetically shaped face section with one or two slots, for horizontal one-way, horizontal alternating or angled alternating air discharge. For supply air or extract air. For installation into suspended ceilings.

Ready-to-install component which consists of the diffuser face with individually adjustable black or white air control elements, and of a plenum box with side entry spigot and suspension lugs.

Clamp fixing or concealed screw fixing

Spigot suitable for circular ducts to EN 1506 or EN 13180.

Sound power level of the air-regenerated noise measured according to EN ISO 5135.

Special characteristics

  • Individually adjustable air control elements to meet individual local requirements
  • High induction results in a rapid reduction of the temperature difference and airflow velocity
  • Diffuser face has been optimised for maximum volume flow rate at low sound power levels
  • Suitable for continuous linear arrangement

Materials and surfaces

  • Diffuser face made from extruded aluminium sections
  • Air control elements made of plastic, UL 94, V-0, flame retardant
  • Plenum box made of galvanised sheet steel
  • End plate and end angle made of aluminium
  • Lip seal made of rubber
  • Lining is mineral wool
  • Diffuser face with anodised finish, E6-C-0, natural colour
  • P1: Powder-coated, RAL CLASSIC colour
  • Air control elements similar to RAL 9005, black
  • WW: Air control elements similar to RAL 9010, white


Mineral wool

  • To EN 13501, fire rating class A1, non-combustible
  • RAL quality mark RAL-GZ 388
  • Biosoluble and hence hygienically safe according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC
  • Faced with glass fibre fabric as a protection against erosion through airflow velocities of up to 20 m/s
  • Inert to fungal and bacterial growth

Technical data

  • Nominal length: 600 – 1950 mm
  • Number of slots: 1, 2
  • Neck extension: 0, 25, 50, 75, 100, 125 mm
  • Minimum volume flow rate: 20 – 40 (l/s)/m or 72 – 144 (m³/h)/m
  • Maximum volume flow rate with LWA ≅ 50 dB(A): 70 – 120 (l/s)/m or 252 – 432 (m³/h)/m
  • Supply air to room air temperature difference: –10 to +10 K

Sizing data

  • V _______________________ [m³/h]
  • Δpt _______________________ [Pa]

Air-regenerated noise

  • LWA _______________________ [dB(A)]

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.

Order example: VSD50-1-AK-M-L/900×123/C1/B00/P1-RAL 9010/WS/WW

Number of slots

1

Connection

Plenum box with clamp fixing

Damper blade for volume flow rate balancing

With

Accessories

Lip seal

Nominal size / spigot diameter

900 × 123 mm

Neck extension

Without

End pieces

End angles

Extended border

With

Exposed surface

RAL 9010, pure white, gloss level 50 %

Air pattern

Alternating angled

Colour of air control elements

White


 

Variants, Attachments, Dimensions and weight, Product details

  • Variants
  • Attachments
  • Dimensions and weight
  • Product details

VSD50-*-AS

Variant

  • Slot diffuser with plenum box for concealed screw fixing
  • Concealed screw fixing only with profile B00 (with extended border)

Parts and characteristics

  • Plenum box for horizontal duct connection
  • Concealed screw fixing
  • Damper blade (optional)
  • Lip seal (optional)

VSD50-*-DS

Variant

  • Slot diffuser with plenum box for concealed screw fixing
  • Plenum box with lining
  • Concealed screw fixing only with profile B00 (with extended border)

Parts and characteristics

  • Plenum box for horizontal duct connection
  • Concealed screw fixing
  • Thermal and acoustic insulation (lining)
  • Damper blade (optional)
  • Lip seal (optional)

VSD50-*-AK

Variant

  • Slot diffuser with plenum box for clamp fixing

Parts and characteristics

  • Plenum box for horizontal duct connection
  • Damper blade (optional)
  • Lip seal (optional)

VSD50-*-DK

Variant

  • Slot diffuser with plenum box for clamp fixing
  • Plenum box with lining

Parts and characteristics

  • Plenum box for horizontal duct connection
  • Concealed screw fixing
  • Thermal and acoustic insulation (lining)
  • Damper blade (optional)
  • Lip seal (optional)

VSD50-*-AA

Variant

  • Slot diffuser with plenum box for clamp fixing
  • Asymmetric plenum box

Parts and characteristics

  • Plenum box for horizontal duct connection
  • Asymmetric plenum box
  • Damper blade (optional)
  • Lip seal (optional)

VSD50

Nominal length
mm
LN
L1
mm
600 600
750 750
900 900
1050 1050
1200 1200
1350 1350
1500 1500
1650 1650
1800 1800
1950 1950


VSD50

Variant
000
P
mm
B00
P
mm
VSD50-1 50 70
VSD50-2 92 112


VSD50

Nominal length
mm
LN
L1
mm
L3
mm
600 600 595
750 750 745
900 900 895
1050 1050 1045
1200 1200 1195
1350 1350 1345
1500 1500 1495
1650 1650 1645
1800 1800 1795
1950 1950 1945


VSD50-*-AS

Variant
y = 0
H3
mm
y = 0
A
mm
y = 25
H3
mm
y = 25
A
mm
y = 50
H3
mm
y = 50
A
mm
y = 75
H3
mm
y = 75
A
mm
y = 100
H3
mm
y = 100
A
mm
B3
mm
H4
mm
ØD
mm
C
mm
VSD50-1/... × 123 267 174 292 199 317 224 342 249 367 274 100 187 123 46
VSD50-1/... × 158 267 174 292 199 317 224 342 249 367 274 100 187 158 48
VSD50-2/... × 158 307 194 332 219 357 244 382 269 407 294 138 227 158 48
VSD50-2/... × 198 307 194 332 219 357 244 382 269 407 294 138 227 198 48

Y: Neck extension, resulting neck lengths 80, 105, 130, 155, 180 mm


VSD50-*-DS

Variant
y = 0
H3
mm
y = 0
A
mm
y = 25
H3
mm
y = 25
A
mm
y = 50
H3
mm
y = 50
A
mm
y = 75
H3
mm
y = 75
A
mm
y = 100
H3
mm
y = 100
A
mm
B3
mm
H4
mm
ØD
mm
C
mm
VSD50-1/... × 123 287 174 312 199 337 224 362 249 387 274 138 207 123 46
VSD50-1/... × 158 287 174 312 199 337 224 362 249 387 274 138 207 158 48
VSD50-2/... × 158 327 194 352 219 377 244 402 269 427 294 176 247 158 48
VSD50-2/... × 198 327 194 352 219 377 244 402 269 427 294 176 247 198 48

Y: Neck extension, resulting neck lengths 80, 105, 130, 155, 180 mm


VSD50-*-AK, VSD50-*-AA

Variant
y = 0
H3
mm
y = 0
A
mm
y = 25
H3
mm
y = 25
A
mm
y = 50
H3
mm
y = 50
A
mm
y = 75
H3
mm
y = 75
A
mm
y = 100
H3
mm
y = 100
A
mm
y = 125
H3
mm
y = 125
A
mm
B3
mm
H4
mm
ØD
mm
C
mm
VSD50-1/... × 123 242 149 267 174 292 199 317 224 342 249 367 274 100 187 123 46
VSD50-1/... × 158 242 149 267 174 292 199 317 224 342 249 367 274 100 187 158 48
VSD50-2/... × 158 282 169 307 194 332 219 357 244 382 269 407 294 138 227 158 48
VSD50-2/... × 198 282 169 307 194 332 219 357 244 382 269 407 294 138 227 198 48

Y: Neck extension, resulting neck lengths 55, 80, 105, 130, 155, 180 mm


VSD50-*-DK

Variant
y = 0
H3
mm
y = 0
A
mm
y = 25
H3
mm
y = 25
A
mm
y = 50
H3
mm
y = 50
A
mm
y = 75
H3
mm
y = 75
A
mm
y = 100
H3
mm
y = 100
A
mm
y = 125
H3
mm
y = 125
A
mm
B3
mm
H4
mm
ØD
mm
C
mm
VSD50-1/... × 123 262 149 287 174 312 199 337 224 362 249 387 274 138 207 123 46
VSD50-1/... × 158 262 149 287 174 312 199 337 224 362 249 387 274 138 207 158 48
VSD50-2/... × 158 302 169 327 194 352 219 377 244 402 269 427 294 176 247 158 48
VSD50-2/... × 198 302 169 327 194 352 219 377 244 402 269 427 294 176 247 198 48

Y: Neck extension, resulting neck lengths 55, 80, 105, 130, 155, 180 mm


VSD50-*-AS

Nominal length
mm
LN
VSD50-1
m
kg
VSD50-2
m
kg
600 4.0 5.0
750 5.0 6.1
900 5.9 7.2
1050 6.9 8.3
1200 7.8 9.4
1350 8.7 10.5
1500 9.7 11.6
1650 10.6 12.7
1800 11.5 13.8
1950 12.5 14.9

Y: Neck extension, resulting neck lengths 55, 80, 105, 130, 155, 180 mm


VSD50-*-DS

Nominal length
mm
LN
VSD50-1
m
kg
VSD50-2
m
kg
600 4.9 6.0
750 6.1 7.3
900 7.2 8.6
1050 8.3 10.0
1200 9.5 11.3
1350 10.6 12.6
1500 11.7 13.9
1650 12.9 15.3
1800 14.0 16.6
1950 15.1 17.9

Y: Neck extension, resulting neck lengths 55, 80, 105, 130, 155, 180 mm


VSD50-*-AK, VSD50-*-AA

Nominal length
mm
LN
VSD50-1
m
kg
VSD50-2
m
kg
600 3.4 4.3
750 4.2 5.3
900 5.0 6.3
1050 5.8 7.2
1200 6.6 8.2
1350 7.4 9.2
1500 8.2 10.1
1650 9.0 11.1
1800 9.8 12.1
1950 10.6 13.0

Y: Neck extension, resulting neck lengths 55, 80, 105, 130, 155, 180 mm


VSD50-*-DK

Nominal length
mm
LN
VSD50-1
m
kg
VSD50-2
m
kg
600 4.4 5.4
750 5.4 6.6
900 6.4 7.8
1050 7.4 9.0
1200 8.4 10.2
1350 9.4 11.4
1500 10.4 12.6
1650 11.4 13.8
1800 12.4 15.0
1950 13.4 16.2

Y: Neck extension, resulting neck lengths 55, 80, 105, 130, 155, 180 mm


VSD50-*/.../000

Variant
000
P
mm
000
E
mm
B00
P
mm
B00
E
mm
VSD50-1 50 120 70 110
VSD50-2 92 120 112 110

Y: Neck extension, resulting neck lengths 55, 80, 105, 130, 155, 180 mm


Number of spigots and spigot diameter

Nominal length VSD50-1 VSD50-2
Nominal length ØD
Nominal length mm

600 – 1500

1 × 123

1 × 158

1 × 158

1 × 198

1650 – 1950

2 × 123

2 × 158

2 × 158

2 × 198


Profiles

VSD50

Variant
000
P
mm
B00
P
mm
VSD50-1 50 70
VSD50-2 92 112


VSD50

Nominal length
mm
LN
VSD50-1
Aeff

VSD50-1
Aeff WS

VSD50-2
Aeff

VSD50-2
Aeff WS

600 0.0053 0.0060 0.0106 0.0121
750 0.0066 0.0076 0.0133 0.0151
900 0.0080 0.0091 0.0159 0.0181
1050 0.0093 0.0106 0.0185 0.0211
1200 0.0106 0.0121 0.0212 0.0241
1350 0.0119 0.0136 0.0238 0.0272
1500 0.0133 0.0151 0.0265 0.0302
1650 0.0146 0.0166 0.0291 0.0332
1800 0.0159 0.0181 0.0318 0.0362
1950 0.0172 0.0196 0.0344 0.0392

Aeff: One-way horizontal and alternating horizontal air dischargeAeff WS: Alternating angled air discharge


Installation examples, Installation details, Commissioning, Basic information and nomenclature

  • Installation examples
  • Installation details
  • Commissioning
  • Basic information and nomenclature

Installation and commissioning

  • Preferably for rooms with a clear height up to 4.0 m
  • Flush ceiling installation
  • Horizontal duct connection
  • Diffusers with a shorter plenum box as well as non-active diffusers require a rear blanking plate; length of blanking plate = L1 – L3
  • For a continuous linear arrangement connect the diffusers with connecting pins and alignment plates
  • If necessary, carry out volume flow rate balancing with the damper blade


These are only schematic diagrams to illustrate installation details.

Volume flow rate balancing 00134438_0

  • Move the air control element near the spigot in such a way that it is possible to insert a screw driver


Volume flow rate balancing

When several diffusers are connected to just one volume flow controller, it may be necessary to balance the volume flow rates.

  • Slot diffusers with plenum box and damper blade (variant -M): The damper blade can be adjusted even after the diffuser face has been installed.

Principal dimensions

ØD [mm]

Outer diameter of the spigot

L₁ [mm]

Length of diffuser without end pieces

L₃ [mm]

Length of plenum box

P [mm]

Width of diffuser face – with extended border, if any

B₃ [mm]

Width of plenum box

H₃ [mm]

Height of slot diffuser with plenum box, from the lower edge of the suspended ceiling to the upper edge of the plenum box

Y [mm]

Neck extension – The neck length results from a fixed length plus the neck extension

A [mm]

Position of the spigot, defined by the distance of the spigot centre line to the lower edge of the suspended ceiling

C [mm]

Length of the spigot

m [kg]

Weight

Nomenclature

fm [Hz]

Octave band centre frequency

LWA [dB(A)]

Sound power level of the air-regenerated noise

V [m³/h] and [l/s]

Volume flow rate

Δpt [Pa]

Total differential pressure


All sound power levels are based on 1 pW.

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