Type DLQ-AK

For horizontal one-way to four-way supply air discharge, with fixed air control blades – sheet steel diffuser face

Square ceiling diffusers

  • Nominal sizes 300, 400, 500, 600, 625
  • Volume flow rate range 40 – 565 l/s or 144 – 2034 m³/h
  • Square diffuser face
  • Diffuser face made of galvanised sheet steel, powder-coated
  • For supply air
  • For variable and constant volume flows
  • For all types of ceiling systems
  • High induction results in a rapid reduction of the temperature difference and airflow velocity


Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colours
  • Horizontal duct connection
  • Plenum box with damper blade

DLQ-AK-3 00132951_0


  • Application
  • Description

Application

  • Type DLQL-AK ceiling diffusers are used as supply air diffusers for comfort zones
  • Attractive design element for building owners and architects with demanding aesthetic requirements
  • Horizontal one-way to four-way supply air discharge for 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 all types of ceiling systems

Special characteristics

  • Horizontal one-way to four-way supply air discharge
  • Diffuser face made of formed sheet steel, powder-coated
  • For all types of ceiling systems
  • Spigot side can be selected
  • Horizontal duct connection

Nominal sizes

  • 300, 400, 500, 600, 625

Variants

  • DLQ-AK-1: One-way air discharge
  • DLQ-AK-2: Two-way air discharge
  • DLQ-AK-2E: Two-way air discharge, for corners
  • DLQ-AK-3: Three-way air discharge
  • DLQ-AK-4: Four-way air discharge

Parts and characteristics

  • Square diffuser face with fixed air control blades
  • Diffuser front frame
  • Diffuser face is attached to the plenum box and cannot be removed

Attachments

  • M: Damper blade for volume flow rate balancing

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 of formed sheet steel
  • Damper blade and plenum box made of galvanised sheet steel
  • Lip seal made of rubber
  • Diffuser face powder-coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC colour

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

Information technique

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

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

Functional description

Ceiling diffusers direct the air from air conditioning systems into the room. 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. Ceiling diffusers allow for large volume flow rates. 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 DLK-AK ceiling diffusers have fixed blades. Horizontal air discharge is one-way to four-way. The supply air to room air temperature difference may range from –10 to +10 K.

Nominal sizes

300, 400, 500, 600, 625 mm

Minimum volume flow rate

40 – 150 l/s or 144 – 540 m³/h

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

545 – 565 l/s or 1962 – 2034 m³/h

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).

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

DLQ-AK-1, DLQ-AK-2, DLQ-AK-3, DLQ-AK-4 (supply air), sound power level and total differential pressure

Nominal size V Damper blade position
Nominal size V 45° 90°
Nominal size V Δpt LWA Δpt LWA Δpt LWA
Nominal size l/s m³/h Pa dB(A) Pa dB(A) Pa dB(A)

300

40

144

10

16

12

19

18

23

300

65

234

26

31

32

34

47

38

300

95

342

56

42

67

45

101

49

300

120

432

90

50

107

53

161

57

400

50

180

4

<15

6

<15

10

13

400

105

378

19

28

25

32

42

35

400

160

576

45

41

58

45

99

48

400

215

774

81

50

105

54

178

57

500

100

360

5

16

7

19

14

23

500

180

648

16

32

22

35

46

39

500

260

936

33

43

47

46

97

50

500

340

1224

57

50

80

53

166

57

600

150

540

4

14

7

19

14

23

600

265

954

14

31

21

36

44

40

600

385

1386

29

42

44

47

94

51

600

505

1818

50

50

76

55

161

59

625

150

540

4

11

7

16

15

21

625

265

954

14

28

21

33

46

38

625

385

1386

29

39

44

44

97

49

625

545

1962

59

50

88

55

194

60


DLQ-AK-2E (supply air), sound power level and total differential pressure

Nominal size V Damper blade position
Nominal size V 45° 90°
Nominal size V Δpt LWA Δpt LWA Δpt LWA
Nominal size l/s m³/h Pa dB(A) Pa dB(A) Pa dB(A)

300

40

144

9

16

11

18

17

22

300

65

234

24

31

28

33

45

37

300

95

342

50

42

61

44

96

48

300

120

432

80

50

97

52

153

56

400

50

180

4

<15

6

9

10

13

400

105

378

19

28

25

31

45

35

400

160

576

45

41

59

44

104

48

400

215

774

82

50

106

53

188

57

500

100

360

5

12

7

16

15

20

500

180

648

16

30

23

34

47

38

500

260

936

34

41

47

45

98

49

500

350

1260

61

50

86

54

178

58

600

150

540

4

11

7

15

13

20

600

265

954

13

29

21

33

41

38

600

385

1386

27

41

43

45

87

50

600

515

1854

48

50

78

54

155

59

625

150

540

4

8

7

13

14

17

625

265

954

13

26

21

31

42

35

625

385

1386

27

38

43

43

89

47

625

565

2034

58

50

93

55

193

59


Ceiling diffusers with square diffuser face. For supply air only, for comfort zones. Diffuser face with fixed air control blades for horizontal one-way to four-way supply air discharge. For installation into all types of suspended ceilings.

Ready-to-install component which consists of the diffuser face with fixed air control blades, front frame with perimeter seal, plenum box, side entry spigot and suspension holes.

Spigot suitable for ducts to EN 1506 or EN 13180.

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

Special characteristics

  • Horizontal one-way to four-way supply air discharge
  • Diffuser face made of formed sheet steel, powder-coated
  • For all types of ceiling systems
  • Spigot side can be selected
  • Horizontal duct connection

Materials and surfaces

  • Diffuser face made of formed sheet steel
  • Damper blade and plenum box made of galvanised sheet steel
  • Lip seal made of rubber
  • Diffuser face powder-coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC colour

Technical data

  • Nominal sizes: 300, 400, 500, 600 mm
  • Minimum volume flow rate: 440 – 150 l/s or 144 – 540 m³/h
  • Maximum volume flow rate, with LWA ≅ 50 dB(A): 545 – 565 l/s or 1962 – 2034 m³/h
  • Supply air to room air temperature difference: –10 to +10 K

Sizing data

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

Air-regenerated noise

  • LWA _______________________ [dB(A)]

00100712_0

 Type
DLQ-AK       Ceiling diffuser

 No. of sides for air discharge
1
2
2E
3
4

 Damper blade for volume flow rate balancing
       No entry: none
M       With

 Accessories
       No entry: none
L       With lip seal

 Nominal size [mm]
300
400
500
600
625

 

 Exposed surface
       No entry: powder-coated RAL 9010, pure white
P1       Powder-coated, specify RAL CLASSIC colour

       Gloss level
       RAL 9010 50 %
       RAL 9006 30 %
       All other RAL colours 70 %

 Spigot side
       No specification required in case of 4-way air discharge
A
B
C
D

Order example: DLQ-AK-3-M/600/P1-RAL 9006/A

No. of sides for air discharge

3

Connection

Plenum box, horizontal connection

Damper blade for volume flow rate balancing

With

Nominal size

600

Exposed surface

RAL 9006, white aluminium, gloss level 30%

Spigot side

A


 

Variants, Dimensions and weight, Product details

  • Variants
  • Dimensions and weight
  • Product details
DLQ-AK 00117426_0.....


DLQ-AK

Nominal size
□Q1
mm
H1
mm
□Q3
mm
H3
mm
ØD
mm
A
mm
C
mm
m
kg
300 298 13 195 277 158 162 42 3.0
400 398 13 295 307 198 177 42 4.5
500 498 13 395 377 248 217 42 7.0
600 598 13 495 427 313 235 42 10.0
625 623 13 520 427 313 235 42 10.5


DLQ-AK

Nominal size
DLQ-AK-1
Aeff

DLQ-AK-2
Aeff

DLQ-AK-2E
Aeff

DLQ-AK-3
Aeff

DLQ-AK-4
Aeff

□Q1
mm
□Q2
mm
300 0.0175 0.0165 0.0182 0.0175 0.0175 298 246
400 0.0370 0.0350 0.0385 0.0370 0.0370 398 346
500 0.0675 0.0610 0.0671 0.0675 0.0675 498 446
600 0.1100 0.1040 0.1144 0.1100 0.1100 598 546
625 0.1230 0.1150 0.1265 0.1230 0.1230 623 571


Installation examples, Installation details, Basic information and nomenclature

  • Installation examples
  • Installation details
  • Basic information and nomenclature

Installation and commissioning

  • Preferably for rooms with a clear height up to 4.0 m
  • Flush ceiling installation
  • Horizontal or vertical duct connection
  • If necessary, carry out volume flow rate balancing with the damper blade


These are only schematic diagrams to illustrate installation details.

Principal dimensions

ØD [mm]

Outer diameter of the spigot

ØD₁ [mm]

Outer diameter of a circular diffuser face

ØD₂ [mm]

Diameter of a circular diffuser face style

ØD₃ [mm]

Diameter of a circular plenum box

□Q₁ [mm]

Outer diameter of a square diffuser face

□Q₂ [mm]

Dimensions of a square diffuser face style

□Q₃ [mm]

Dimensions of a square plenum box

H₁ [mm]

Distance (height) from the lower edge of the suspended ceiling to the lower edge of the diffuser face

H₂ [mm]

Height of a ceiling diffuser, from the lower edge of the suspended ceiling to the upper edge of the spigot

H₃ [mm]

Height of a ceiling diffuser with plenum box, from the lower edge of the suspended ceiling to the upper edge of the plenum box or of the spigot

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

Definitionen

LWA [dB(A)]

Schallleistungspegel des Strömungsgeräusches, A-bewertet

V [m³/h] und [l/s]

Volumenstrom

Δtz [K]

Zulufttemperaturdifferenz, Zulufttemperatur minus Raumtemperatur

Δpt [Pa]

Gesamtdruckdifferenz


Alle Schallleistungspegel basieren auf 1 pW.

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Nous sommes à votre disposition

Visual contact Visual contact

Veuillez préciser votre message et le type de demande
Tel.: +33 1 56 70 54 54

Pièce jointe (max. 10MB)

Les champs marqués d'un (*) sont obligatoires.

Contact

Merci pour votre message !

Visual contact Visual contact

Votre message a été envoyé et sera traité dans les plus brefs délais.
Notre département de traitement des demandes prendra contact avec vous dès que possible.
Pour les questions d'ordre général concernant les produits ou services, vous pouvez aussi nous appeler :
Tel.: +33 1 56 70 54 54