Type QLV-360

Polygon casing, 360° air discharge, for comfort and industrial zones

Polygon displacement flow diffusers with omni directional air discharge

  • Spigot diameter 160 – 630 mm, nominal height 500 – 1750 mm
  • Volume flow rate range 32 – 1157 l/s or 116 – 4166 m³/h
  • Circular duct connection
  • Duct connection at the top or bottom
  • Integral airflow straightener and conical equalising element


Optional equipment and accessories

  • Floor mounting plate
  • Damper blade for volume flow rate balancing
  • Exposed surface in RAL CLASSIC colours

QLV-360-O-M-L 00132329_0


  • Application
  • Description

Application

  • Type QLV-360 displacement flow diffusers are used as supply air units for industrial and comfort zones
  • Attractive design element for building owners and architects with demanding aesthetic requirements
  • For free-standing installation
  • Low-velocity airflow, causing only low levels of induction and resulting in low-turbulence displacement ventilation.
  • Excellent air quality in the occupied zone
  • Draught-free and economical ventilation and air conditioning also of larger internal spaces such as shop floors or auditoriums, with several displacement flow diffusers in a regular arrangement
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –6 to –1 K

Special characteristics

  • Eight-way air discharge
  • Duct connection at the top or bottom
  • Optional damper blade for volume flow rate balancing

Nominal sizes

  • ∅D: 160, 200, 250, 315, 400, 500, 630 mm
  • H: 500, 600, 800, 1000, 1250, 1500, 1750 mm

Variants

  • QLV-...-O: Spigot at the top
  • QLV-...-U: Spigot at the bottom

Parts and characteristics

  • Polygon casing
  • Equalising element and airflow straightener that ensure a uniform supply air discharge
  • Lip seal, optional for QLV-360-O

Attachments

  • Damper blade for volume flow rate balancing

Accessories

  • Lip seal
  • Floor mounting plate

Construction features

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

Materials and surfaces

  • Top cover, base and side parts made of galvanised sheet steel
  • S7: Top cover and base made of aluminium
  • Corner and edge trims are extruded aluminium sections
  • Airflow straightener made of plastic
  • Equalising element made of synthetic fibres
  • Lip seal made of rubber
  • Surface powder-coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC colour
  • S7: Surface galvanised

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

Displacement flow diffusers discharge the air from air conditioning systems with a low velocity and near the floor. The low-turbulence airflow creates a pool of fresh air that covers the entire floor area. The convection from people and other heat sources causes the fresh air from the pool to rise and create comfortable conditions in the occupied zone.

This draught-free and economical type of ventilation is also suitable for large internal spaces, such as auditoriums or shop floors, with several regularly arranged units.

Displacement ventilation is characterised by low airflow velocities and low turbulence. The air quality in the occupied zone is very high.

Displacement ventilation with air discharge near the floor is suitable only for cooling. The maximum supply air to room air temperature difference is –6 K.

Type QLV-360 displacement flow diffusers are fitted with an equalising element and an air straightener which distribute the supply air flow equally across the entire diffuser area. The perforated sheet metal diffuser face helps to equalise the airflow further. Eight-way (360°) air discharge.

With displacement ventilation, i.e. air discharge near the floor, extract air units should be installed in the upper part of a room, above the occupied zone.

Nominal sizes

160 × 500 to 630 × 1750 mm

Minimum volume flow rate, at 0.1 m/s

32 –386 l/s or 116 – 1389 m³/h

Maximum volume flow rate, at 0.3 m/s

97 – 1157 l/s or 348 – 4166 m³/h

Supply air to room air temperature difference

–6 to –1 K

Sound power level, at 0.3 m/s

50 dB(A) max.


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

QLV-360, sound power level, total differential pressure and near zone

Nominal size V v0 Damper blade position Lnz
Nominal size V v0 45° 90° Lnz
Nominal size V v0 Δpt LWA Δpt LWA Δpt LWA Lnz
Nominal size l/s m³/h m/s Pa dB(A) Pa dB(A) Pa dB(A) m

160 × 500

32

116

0.10

6

<15

9

<15

17

17

160 × 500

48

174

0.15

12

<15

20

20

38

28

160 × 500

64

232

0.20

22

21

35

28

68

36

160 × 500

97

348

0.30

50

32

79

40

152

48

200 × 500

39

140

0.10

4

<15

6

<15

10

<15

200 × 500

59

211

0.15

8

<15

12

15

24

24

200 × 500

78

281

0.20

14

<15

22

23

42

32

200 × 500

117

421

0.30

32

26

50

34

94

43

250 × 500

47

169

0.10

<3

<15

3

<15

6

<15

250 × 500

71

254

0.15

5

<15

8

<15

15

19

250 × 500

94

338

0.20

9

<15

14

17

26

27

250 × 500

141

508

0.30

20

20

31

29

58

38

160 × 600

39

139

0.10

7

<15

12

<15

24

21

160 × 600

58

209

0.15

16

17

28

25

53

33

160 × 600

77

278

0.20

29

25

49

33

94

41

160 × 600

116

417

0.30

65

37

111

45

212

52

200 × 600

47

168

0.10

5

<15

8

<15

15

17

200 × 600

70

253

0.15

10

<15

17

20

33

28

200 × 600

94

337

0.20

18

19

31

28

58

36

200 × 600

140

505

0.30

41

31

69

39

131

48

250 × 600

56

203

0.10

3

<15

5

<15

9

<15

250 × 600

85

305

0.15

6

<15

11

<15

20

23

250 × 600

113

406

0.20

11

<15

19

22

36

31

250 × 600

169

609

0.30

26

25

43

34

80

43

315 × 600

70

251

0.10

<3

<15

3

<15

6

<15

315 × 600

104

376

0.15

4

<15

7

<15

13

19

315 × 600

139

501

0.20

7

<15

12

17

22

27

315 × 600

209

752

0.30

17

19

28

28

50

38

160 × 800

52

185

0.10

12

<15

21

22

40

29

160 × 800

77

278

0.15

26

25

48

33

91

40

160 × 800

103

371

0.20

46

33

85

41

162

49

160 × 800

155

556

0.30

104

44

190

52

364

60

200 × 800

62

225

0.10

7

<15

13

16

25

24

200 × 800

94

337

0.15

16

19

29

28

56

36

200 × 800

125

449

0.20

29

27

52

36

99

44

200 × 800

187

674

0.30

64

39

117

47

223

55

250 × 800

75

271

0.10

4

<15

8

<15

15

20

250 × 800

113

406

0.15

10

<15

18

22

34

31

250 × 800

150

541

0.20

18

21

32

30

60

39

250 × 800

226

812

0.30

40

33

72

41

136

50

315 × 800

93

334

0.10

3

<15

5

<15

9

15

315 × 800

139

501

0.15

6

<15

11

17

21

26

315 × 800

186

668

0.20

11

15

20

25

38

35

315 × 800

278

1002

0.30

26

27

46

36

84

46

400 × 800

115

415

0.10

<3

<15

3

<15

6

<15

400 × 800

173

622

0.15

4

<15

7

<15

13

22

400 × 800

230

829

0.20

7

<15

13

19

23

30

400 × 800

346

1244

0.30

16

21

29

31

52

41

160 × 1000

64

232

0.10

17

19

32

28

62

35

0.8

160 × 1000

97

348

0.15

37

30

73

39

138

46

1.0

160 × 1000

129

464

0.20

66

39

129

47

246

54

160 × 1000

193

696

0.30

149

50

291

58

554

66

200 × 1000

78

281

0.10

10

<15

20

22

37

30

0.8

200 × 1000

117

421

0.15

23

25

45

34

84

41

1.0

200 × 1000

156

562

0.20

40

33

79

42

150

49

200 × 1000

234

842

0.30

91

44

178

53

337

61

250 × 1000

94

338

0.10

6

<15

12

17

23

25

0.8

250 × 1000

141

508

0.15

14

19

27

28

51

37

1.0

250 × 1000

188

677

0.20

25

27

48

36

91

45

250 × 1000

282

1015

0.30

56

38

109

47

204

56

315 × 1000

116

418

0.10

4

<15

8

<15

14

21

0.8

315 × 1000

174

626

0.15

9

<15

17

23

32

32

1.0

315 × 1000

232

835

0.20

16

21

30

31

56

40

315 × 1000

348

1253

0.30

35

33

68

42

126

52

400 × 1000

144

518

0.10

<3

<15

5

<15

9

16

0.8

400 × 1000

216

778

0.15

6

<15

11

17

19

27

1.0

400 × 1000

288

1037

0.20

10

15

19

25

34

36

400 × 1000

432

1555

0.30

22

27

42

37

77

47

500 × 1000

177

638

0.10

<3

<15

3

<15

6

<15

0.8

500 × 1000

266

957

0.15

4

<15

7

<15

12

23

1.0

500 × 1000

354

1276

0.20

6

<15

12

20

22

31

500 × 1000

532

1914

0.30

15

22

28

32

50

43

315 × 1250

145

522

0.10

6

<15

11

17

21

26

1.1

315 × 1250

218

783

0.15

12

19

26

29

48

38

1.4

315 × 1250

290

1044

0.20

22

27

46

37

85

46

1.6

315 × 1250

435

1566

0.30

50

39

103

48

190

57

2.0

400 × 1250

180

648

0.10

3

<15

7

<15

13

22

1.1

400 × 1250

270

972

0.15

8

<15

16

23

29

33

1.4

400 × 1250

360

1296

0.20

14

21

28

31

51

41

1.7

400 × 1250

540

1944

0.30

31

33

63

43

116

53

2.1

500 × 1250

222

797

0.10

<3

<15

5

<15

8

18

1.1

500 × 1250

332

1196

0.15

5

<15

10

18

18

29

1.4

500 × 1250

443

1595

0.20

9

16

18

26

33

37

1.7

500 × 1250

665

2392

0.30

20

27

41

38

74

48

2.1

630 × 1250

276

992

0.10

<3

<15

3

<15

5

<15

1.0

630 × 1250

413

1488

0.15

3

<15

7

<15

12

25

1.4

630 × 1250

551

1984

0.20

6

<15

12

21

21

33

1.6

630 × 1250

827

2975

0.30

13

22

27

33

47

44

2.1

400 × 1500

216

778

0.10

5

<15

10

17

18

27

1.5

400 × 1500

324

1166

0.15

10

18

22

28

40

38

1.9

400 × 1500

432

1555

0.20

18

26

39

36

72

46

2.2

400 × 1500

648

2333

0.30

41

37

88

47

162

57

2.8

500 × 1500

266

957

0.10

3

<15

6

<15

11

22

1.5

500 × 1500

399

1435

0.15

7

<15

14

23

26

34

1.9

500 × 1500

532

1914

0.20

12

21

25

31

46

42

2.3

500 × 1500

797

2871

0.30

26

32

57

43

103

53

2.9

630 × 1500

331

1190

0.10

<3

<15

4

<15

7

18

1.4

630 × 1500

496

1785

0.15

4

<15

9

18

16

29

1.8

630 × 1500

661

2380

0.20

8

15

16

26

29

38

2.3

630 × 1500

992

3570

0.30

17

27

36

37

65

49

3.0

630 × 1750

386

1389

0.10

<3

<15

5

<15

10

22

1.8

630 × 1750

579

2083

0.15

5

<15

12

22

21

34

2.5

630 × 1750

771

2777

0.20

10

19

21

30

38

42

3.2

630 × 1750

1157

4166

0.30

21

31

48

42

86

53

4.4

<: 0.2 m/s are not achieved

The near zone values are based on a supply air to room air temperature difference of –3 K


Displacement flow diffusers for air discharge near the floor, suitable for comfort and industrial zones with special demands on architecture and design.

With eight-way (360°) air discharge for low-turbulence displacement ventilation. Polygon casing for free-standing installation.

Ready-to-install component which consists of a casing with spigot at the top or bottom, an equalising element and airflow straightener that ensure uniform supply air discharge, and a perforated sheet metal diffuser face.

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

  • Eight-way air discharge
  • Duct connection at the top or bottom
  • Optional damper blade for volume flow rate balancing

Materials and surfaces

  • Top cover, base and side parts made of galvanised sheet steel
  • S7: Top cover and base made of aluminium
  • Corner and edge trims are extruded aluminium sections
  • Airflow straightener made of plastic
  • Equalising element made of synthetic fibres
  • Lip seal made of rubber
  • Surface powder-coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC colour
  • S7: Surface galvanised

Technical data

  • Nominal sizes: 160 × 500 to 630 × 1750 mm
  • Minimum volume flow rate, at 0.1 m/s: 32 – 386 l/s or 116 – 1389 m³/h
  • Maximum volume flow rate, at 0.3 m/s: 97 – 1157 l/s or 348 – 4166 m³/h
  • Supply air to room air temperature difference: –6 to –1 K
  • Sound power level, at 0.3 m/s: 50 dB(A) max.

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.

00173828_0

 Type
QLV-360       Displacement flow diffuser

 Connection
       Circular spigot
O       Top
U       Bottom

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

 Lip seal
       No entry: none
L       With (only for top spigot)
       Bottom spigots always have a lip seal

 

 Nominal size [mm]
       ∅D × H
       Spigot diameter × nominal height

 Fixing
       No entry: none
B0       With base plate

 Exposed surface
       No entry: powder-coated
       RAL 9010, pure white
P1       Powder-coated, specify RAL CLASSIC colour
S7       Uncoated (galvanised steel, untreated aluminium)

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

Order example: QLV–360–U/250×500/P1-RAL 9016

Connection

Circular spigot at the bottom

Damper blade for volume flow rate balancing

Without

Lip seal

Without

Nominal size

250 × 500 mm

Fixing

Without

Exposed surface

RAL 9016, traffic white, gloss level 70 %


 

Accessories, Dimensions and weight

  • Accessories
  • Dimensions and weight
Base plate 00224235_0


The nominal size (nominal width × nominal height) is equal to the discharge opening.

QLV-360

Nominal size
B1
mm
H1
mm
T1
mm
ØD
mm
A
mm
m
kg
160×500 240 500 240 158 120 6
200×500 280 500 280 198 140 7
250×500 330 500 330 248 165 8
160×600 240 600 240 158 120 7
200×600 280 600 280 198 140 8
250×600 330 600 330 248 165 10
315×600 395 600 395 313 197 11
160×800 240 800 240 158 120 8
200×800 280 800 280 198 140 10
250×800 330 800 330 248 165 11
315×800 395 800 395 313 197 14
400×800 480 800 480 398 240 17
160×1000 240 1000 240 158 120 10
200×1000 280 1000 280 198 140 11
250×1000 330 1000 330 248 165 13
315×1000 395 1000 395 313 197 16
400×1000 480 1000 480 398 240 20
500×1000 580 1000 580 498 290 25
315×1250 395 1250 395 313 197 19
400×1250 480 1250 480 398 240 23
500×1250 580 1250 580 498 290 28
630×1250 710 1250 710 628 355 36
400×1500 480 1500 480 398 240 26
500×1500 580 1500 580 498 290 32
630×1500 710 1500 710 628 355 40
630×1750 710 1750 710 628 355 44


Installation details, Basic information and nomenclature

  • Installation details
  • Basic information and nomenclature
Base plate 00224235_0


Installation and commissioning

  • With displacement ventilation and air discharge near the floor, extract air devices should be installed in the upper part of a room, above the occupied zone.
  • If necessary, carry out volume flow rate balancing with the damper blade

Principal dimensions

B₁ [mm]

Width of diffuser face

B₄ [mm]

Width of a rectangular spigot

ØD [mm]

Outer diameter of the spigot

ØD₁ [mm]

Casing diameter

H₁ [mm]

Height of diffuser face

T₁ [mm]

Casing depth

T₄ [mm]

Depth of a rectangular spigot

m [kg]

Weight

Nomenclature

LWA [dB(A)]

A-weighted sound power level of air-regenerated noise

V [m³/h] and [l/s]

Volume flow rate

v0 [m/s]

Theoretical airflow velocity across the diffuser area, at a distance of 0 m from the diffuser face

Lnz [m]

Near zone of the displacement flow diffuser, where the comfort criteria may not be achieved

The near zone is at least 0.5 m, independent of the airflow velocity

At distance Lnz the airflow velocity is 0.2 m/s max., measured 0.1 m above the floor

Δtz [K]

Supply air to room air temperature difference, i.e. supply air temperature minus room temperature

Δpt [Pa]

Total differential pressure

Aeff [m²]

Effective air discharge area


All sound power levels are based on 1 pW.

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Thank you for your message!

Visual contact Visual contact

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Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +49 (0)2845 / 202-0 | Fax: +49 (0)2845/202-265