CFE-T-PP_gc_10psd.png
CFE-T-PP
CFE_gc_18psd.png

Design options with perforated sheet cover or slot diffuser face

CFE-T_gc_19ai.png

T-style construction, for lightweight partition walls

CFE_Z_gc_25ai.png

Z-style construction, for lightweight partition walls

cfe_gc_23psd.png

Installation in lightweight partition walls with metal support structure

CFE-T-PP_gc_10psd.png
CFE_gc_18psd.png
CFE-T_gc_19ai.png
CFE_Z_gc_25ai.png
cfe_gc_23psd.png

CFE         

Crossflow element for lightweight partition walls


Crossflow elements offer building owners and architects with special requirements additional design options for air distribution
  • With recess for air diffusers – with fronts of different optics
  •  Without recess for air diffusers – for free design options depending on the chosen wall opening
  •  With integrated cross talk silencer and insulating strips for sound insulation
  •  Nominal lengths from 550 – 1175 mm, in increments of 1 mm
  •  Nominal heights from 290 – 440 mm, in increments of 1 mm
  •  The wide range of dimensions allows a large selection of different installation situations, with low pressure loss and high sound insulation values
  •  Installation in lightweight partition walls with 50 mm or 75 mm stud frame width and 100 mm or 125 mm wall thickness
  •  with neck extension Wall thicknesses up to 300 mm

Optional equipment

  • Diffuser face powder-coated in RAL CLASSIC colours

General information

Application

  • Crossflow elements are suitable as cross talk silencers for air transfer flows in comfort zones
  • Due to their diversity of variants and high flexibility, they can be used for many applications

Special characteristics
  • Different construction styles allow individual adaptation to local conditions
  • Low differential pressure
  • Crossflow elements in T- and Z-design without recess for an air diffuser are suitable for (system) partition walls
  • Cross talk silencers reduce noise transmission to adjacent rooms
  • To prevent sound transmission via the casing, insulation strips are attached to the crossflow element
  • Tool-free assembly of the diffuser face enables quick installation after completion of the drywall work
  • High-quality appearance of diffuser face due to powder coating according to RAL-CLASSIC colour scale
  • Crossflow elements without recess: free design options of the wall openings for builders and architects while maintaining the free cross-section ≥ 51 %
  • Nominal length and nominal heights selectable in mm steps

Nominal sizes

Nominal length LN:

  • 550 - 1175 mm (in increments of 1mm)

Nominal height HN:

  • 290 - 440 mm (in increments of 1mm)

Unit depth or wall thickness:
Construction style Z

  • 100 - 300 mm (in increments of 1mm)
Construction style T

  • 125 - 300 mm (in increments of 1mm)

Variants
CFE-..:
  • -*: in Z or T design
  • -*: with or without recess for diffuser face
  • -PP: Perforated sheet cover
  • -SC: Slot diffuser face

Construction
Surface finish of diffuser faces:

  • Powder-coated RAL 9010, pure white, GE 50
  • P1: powder-coated RAL 9006, white aluminium, GE 30
  • P1: powder-coated in other RAL CLASSIC colours, GE 70

Construction features
  • With or without recess for diffuser face
  • A diffuser face requires a construction with recess for the diffuser face
  • Nominal lengths from 550 - 1175 mm and nominal heights from 290 - 440 mm available in mm steps
  • The perforated sheet cover PP has a free cross-section of approx. 51 %, the hole diameter is 6 mm, and the rows of holes are arranged offset to each other
  • The slot diffuser face SC offers the largest possible free cross-section for very low pressure loss

Material and surfaces
  • Casings and diffuser faces made of galvanised sheet steel
  • Acoustic lining made of mineral wool
  • Insulation strips on the casing made of closed cell PE foam
  • Diffuser faces powder-coated RAL9010, GE 50
  • P1: powder-coated colour according to RAL CLASSIC

Mineral wool:
  • Mineral wool on surfaces in contact with air are laminated with glass fibre fabric, abrasion-resistant up to 20 m/s
  • Acc. to EN 13501, fire rating class A1, non-combustible
  • RAL quality mark RAL-GZ 388
  • Non-hazardous thanks to high biosolubility according to the German Ordinance on Hazardous Substances and Note Q of the European Regulation (EC) No 1272/2008
  • Inert to fungal and bacterial growth

Standards and guidelines
  • Sound power level of air-regenerated noise measured according to DIN EN ISO 5135
  • Conforms to VDI 6022
  • Sound reduction index according to DIN EN ISO 10140 and DIN EN ISO 717-1

Maintenance

  • Low maintenance, as there is no wear and tear due to design and materials used
  • Inspection and cleaning according to VDI 6022

Technické údaje

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

  • FUNCTION
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE
Schematic illustration, CFE-Z-PP CFE_Z_gc_14ai.png

1 Casing

2 Perforated sheet metal cover

3 Mineral wool

4 Glass silk nonwoven

5 Sealing strips

Type CFE crossflow elements can be installed in lightweight partition walls. Due to the pressure difference, the air flows e.g. from the office area as exhaust air into the hallway, into indoor zones or neighbouring areas with suspended ceilings. A central exhaust air system can be used there. Integrated acoustic lining reduces noise transmission into adjacent rooms. To avoid sound transmission on lightweight walls, insulation strips are attached to the casing for sound decoupling.

Nominal lengths

550 - 1175 in mm increments

Nominal height

290 - 440 in mm increments

maximum volume flow at ∆pt = 5 Pa, T-style construction, with slot cover

124 m³/h

maximum volume flow at ∆pt = 5 Pa, Z-style construction, with slot cover

120 m³/h

maximum volume flow at ∆pt = 10 Pa, T-style construction, with slot cover

175 m³/h

maximum volume flow at ∆pt = 10 Pa, Z-style construction, with slot cover

169 m³/h

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

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


Reference areas


HN

LN = 550

LN = 850

LN = 1000

LN = 1175

Opening area

-

0.02

0.03

0.04

0.04

Unit area

290

0.16

0.25

0.29

0.34

Unit area

340

0.19

0.29

0.34

0.40

Unit area

440

0.24

0.37

0.44

0.52


Weighted sound reduction index, standard sound pressure level and sound power level, LN = 550

Variant


HN

Rw,o [dB]

Rw,u [dB]

Dnew [dB]

∆pt = 5 Pa

∆pt = 10 Pa

qv [m³/h]

Lwa [dB(A)]

qv [m³/h]

Lwa [dB(A)]

CFE-T-SC

290

14

23

41

58

<15

82

16

CFE-T-SC

340

16

26

43

57

<15

80

15

CFE-T-SC

440

19

30

46

54

<15

77

<15

CFE-T-PP

290

14

23

41

49

<15

70

<15

CFE-T-PP

340

17

26

44

48

<15

68

<15

CFE-T-PP

440

19

30

47

47

<15

66

<15

CFE-Z-SC

290

13

23

41

56

<15

79

19

CFE-Z-SC

340

15

25

42

55

<15

78

19

CFE-Z-SC

440

21

32

48

53

<15

75

18

CFE-Z-PP

290

13

23

40

47

<15

66

17

CFE-Z-PP

340

15

25

42

46

<15

65

17

CFE-Z-PP

440

21

32

48

45

<15

63

16


Weighted sound reduction index, standard sound pressure level and sound power level, LN = 850

Variant


HN

Rw,o [dB]

Rw,u [dB]

Dnew [dB]

∆pt = 5 Pa

∆pt = 10 Pa

qv [m³/h]

Lwa [dB(A)]

qv [m³/h]

Lwa [dB(A)]

CFE-T-SC

290

14

23

39

90

<15

127

18

CFE-T-SC

340

16

26

41

88

<15

124

17

CFE-T-SC

440

19

30

44

84

<15

119

16

CFE-T-PP

290

14

23

39

76

<15

108

<15

CFE-T-PP

340

17

26

42

74

<15

105

<15

CFE-T-PP

440

19

30

45

73

<15

103

<15

CFE-Z-SC

290

13

23

39

87

<15

123

21

CFE-Z-SC

340

15

25

40

85

<15

121

21


Variant


HN

Rw,o [dB]

Rw,u [dB]

Dnew [dB]

∆pt = 5 Pa

∆pt = 10 Pa

qv [m³/h]

Lwa [dB(A)]

qv [m³/h]

Lwa [dB(A)]

CFE-Z-SC

440

21

32

46

82

<15

116

19

CFE-Z-PP

290

13

23

39

72

<15

102

19

CFE-Z-PP

340

15

25

40

71

<15

100

19

CFE-Z-PP

440

21

32

46

69

<15

98

18


Weighted sound reduction index, standard sound pressure level and sound power level, LN = 1000

Variant


HN

Rw,o [dB]

Rw,u [dB]

Dnew [dB]

∆pt = 5 Pa

∆pt = 10 Pa

qv [m³/h]

Lwa [dB(A)]

qv [m³/h]

Lwa [dB(A)]

CFE-T-SC

290

14

23

38

105

<15

149

18

CFE-T-SC

340

16

26

41

103

<15

146

18

CFE-T-SC

440

19

30

44

99

<15

140

17

CFE-T-PP

290

14

23

38

90

<15

127

15

CFE-T-PP

340

17

26

41

87

<15

124

<15

CFE-T-PP

440

19

30

44

85

<15

121

<15

CFE-Z-SC

290

13

23

38

102

<15

144

22

CFE-Z-SC

340

15

25

39

100

<15

142

21

CFE-Z-SC

440

21

32

45

96

<15

136

20

CFE-Z-PP

290

13

23

38

85

<15

120

20

CFE-Z-PP

340

15

25

40

83

<15

117

19

CFE-Z-PP

440

21

32

45

81

<15

115

19


Weighted sound reduction index, standard sound pressure level and sound power level, LN = 1175

Variant


HN

Rw,o [dB]

Rw,u [dB]

Dnew [dB]

∆pt = 5 Pa

∆pt = 10 Pa

qv [m³/h]

Lwa [dB(A)]

qv [m³/h]

Lwa [dB(A)]

CFE-T-SC

290

14

23

37

124

<15

175

19

CFE-T-SC

340

16

26

40

121

<15

171

18

CFE-T-SC

440

19

30

43

116

<15

164

17

CFE-T-PP

290

14

23

37

105

<15

149

16

CFE-T-PP

340

17

26

40

103

<15

145

15

CFE-T-PP

440

19

30

43

100

<15

142

<15

CFE-Z-SC

290

13

23

37

120

<15

169

22

CFE-Z-SC

340

15

25

39

118

<15

167

22

CFE-Z-SC

440

21

32

45

113

<15

160

21

CFE-Z-PP

290

13

23

37

100

<15

141

21

CFE-Z-PP

340

15

25

39

98

<15

138

20

CFE-Z-PP

440

21

32

45

95

<15

135

19

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

Specification text

Crossflow elements with cross talk silencers are used for air transfer flow into adjacent rooms and are suitable for comfort areas.

The crossflow element is available in rectangular Z or T design. The nominal height and nominal length are variable within the limits in mm steps. Therefore, the crossflow element can be optimally adapted to project-specific requirements. The design without recess for an air diffuser offers builders and architects, in compliance with the free cross section of ≥ 51%, various design options. For the version with recess for an air diffuser, a choice can be made between different diffuser fronts. The perforated diffuser face -PP has a free area of approx. 51%. The hole diameter is 6 mm, staggered pitch. Fixing a diffuser face to the crossflow element after the drywalling has been completed is quick and easy. The crossflow element includes a cross talk silencer with acoustic lining that reduces noise transmission to adjacent rooms. To prevent sound transmission via the casing, sealing strips are attached to the crossflow element. Suitable for the space saving or concealed installation in lightweight partition walls with different stand widths. Sound power level of the air-regenerated noise measured according to EN ISO 5135. Sound reduction index according to DIN EN ISO 10140 and DIN EN ISO 717-1. Crossflow element and diffuser face made of galvanised sheet steel.Sound insulation material made of mineral wool.
Mineral wool:

  • Mineral wool on surfaces in contact with air are laminated with glass fibre fabric, abrasion-resistant up to 20 m/s
  • Acc. to EN 13501, fire rating class A1, non-combustible
  • RAL quality mark RAL-GZ 388
  • Non-hazardous thanks to high biosolubility according to the German Ordinance on Hazardous Substances and Note Q of the European Regulation (EC) No 1272/2008
  • Inert to fungal and bacterial growth

Equivalence criteria
  • Different construction styles and sizes allow for meeting local and project-specific requirements
  • Low differential pressure
  • The crossflow element in Z-style construction without a recess for the diffuser face is suitable for thin lightweight partition walls with metal support structure
  • An integrated cross talk silencer reduces noise transmission into adjacent rooms.
  • Sealing strips on the casing minimise noise transmission
  • Diffuser face powder-coated in a RAL CLASSIC colour scale

Variants
Surface finish of diffuser faces:

  • Powder-coated RAL 9010, pure white, GU 50
  • P1: powder-coated RAL 9006, white aluminium, GU30
  • P1: powder-coated in other RAL CLASSIC colours, GU 70

Technical data
  • Nominal length: 550 to 1175 mm (in increments of 1 mm)
  • Nominal height: 290 to 440 mm (in increments of 1 mm)
  • Wall thicknesses: 100/125 - 300 mm (in increments of 1 mm)
  • Maximum volume flow rate Δpt = 5 Pa: 124 m³/h
  • Maximum volume flow rate Δpt = 10 Pa: 175 m³/h

Sizing data
  • LWA [dB(A)]
  • qv [m³/h]
  • Δpt [Pa]
  • Dn, e, w [dB]
  • Rw [dB]
CFETSCA/850 × 340/300 × 27 × 203/P1 - RAL 9016
|||||||
1234567

1 Type

CFE Crossflow element

2 Construction

Z Construction style Z

T Construction style T

D Pair of diffuser faces

3 Air diffuser

No entry: without recess for air diffuser

With recess for air diffuser
PP Perforated metal diffuser faces

SC Slot diffuser faces

4 Construction style

Only with air diffuser (PP, SC)

No entry: symmetrical neck lengths

A asymmetrical neck lengths

5 Nominal size [mm]

Nominal length × nominal height

Nominal length (LN)

550 – 1175

Nominal height (HN)

290 – 440 (standard height 340)

6 Device depth [mm]

Nominal depth (TN) × neck length left (TL) × neck length right (TR) must be specified

Nominal depth (TN)

100 – 300

Neck length left (TL)

27 – 203

Neck length right (TR)

27 – 203

7 Diffuser face surface

No entry: powder-coated, RAL 9010 (pure white)

P1 powder-coated; specify RAL CLASSIC colour

Gloss level

RAL 9010 GU 50

RAL 9006 GU 30

All other RAL colours GU 70

Order example: CFE-T-SC-A/850×300/300×27×203/P1-RAL9016

TypeCFE - Crossflow element
ConstructionConstruction style T
Air diffuserSlot diffuser faces
Construction styleasymmetrical neck length
Nominal size [mm]Nominal length 850, nominal height 300
Unit depth [mm]Nominal depth 300, neck length left 27, neck length right 203
Diffuser face surfacePowder-coated, RAL 9016 (traffic white)

Variants

  • Varianten


Stažení

informace o produktu

návody k obsluze

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