Type ADD

For the creative design of ceilings in comfort zones, with fixed air control blades

Circular and square ceiling swirl diffusers

  • Nominal sizes 250, 300, 400, 450, 500, 600, 625
  • Volume flow rate range 20 – 465 l/s or 72 – 1674 m³/h
  • Diffuser face made of galvanised sheet steel, powder-coated
  • For supply and extract air
  • For variable and constant volume flows
  • For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
  • Swirl unit inside for the best swirl effect and high induction levels
  • Ideal for comfort zones


Optional equipment and accessories

  • Exposed diffuser face available in RAL CLASSIC colours
  • Horizontal or vertical duct connection
  • Plenum box with cord-operated damper blade and pressure tap

ADD–Q 00133173_0


  • Application
  • Description

Application

  • Type ADD ceiling swirl diffusers are used as supply air or extract air diffusers for comfort zones
  • Attractive design element for building owners and architects with demanding aesthetic requirements
  • Horizontal swirling supply air discharge for mixed flow ventilation
  • The efficient swirl creates high induction levels, thereby rapidly reducing the temperature difference and airflow velocity (supply air variant)
  • For variable and constant volume flows
  • For supply air to room air temperature differences from –12 to +10 K
  • For room heights up to 4 m (lower edge of suspended ceiling)
  • For all types of ceiling systems

Special characteristics

  • For the creative design of ceilings in comfort zones
  • Diffuser faces in many different designs
  • For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
  • Horizontal or vertical duct connection

Nominal sizes

  • 250, 300, 400, 450, 500, 600, 625

Variants

  • ADD-Q: Square diffuser face
  • ADD-R: Circular diffuser face
  • ADD-*-Z: Supply air
  • ADD-*-A: Extract air


Connection

  • H: Horizontal duct connection
  • V: Vertical duct connection

Parts and characteristics

  • Circular or square design diffuser face
  • Swirl unit and discharge nozzle for ideal horizontal supply air discharge
  • Plenum box with suspension holes and equalising element that ensures a uniform airflow through the diffuser face
  • Simple installation of the diffuser face due to central fixing screw with decorative cap

Attachments

  • M: Damper blade for volume flow rate balancing
  • MN: Pressure tap and cord-operated damper blade for volume flow rate balancing with the diffuser face in place

Accessories

  • Lip seal

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, swirl unit, plenum box and cross bar made of galvanised sheet steel
  • Discharge nozzle made of aluminium
  • Lip seal made of rubber
  • Swirl unit and discharge nozzle dip coated RAL 9005, jet black
  • 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

Teknisk information

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

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

Functional description

Ceiling swirl diffusers in air conditioning systems create a swirl to supply air to rooms. 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 swirl 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.

Design ceiling swirl diffusers are characterised by a diffuser face plate with a particular pattern. The swirl unit required for the swirling air discharge is situated inside the plenum box and hence not visible from the room.

Type ADD ceiling swirl diffusers have fixed blades. Air discharge is horizontal omni directional. The supply air to room air temperature difference may range from –12 to +10 K.

A damper blade (optional) simplifies volume flow rate balancing for commissioning. Pressure tap and cord-operated damper blade (optional) allow for volume flow rate balancing with the diffuser face in place.

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

Nominal sizes

250, 300, 400, 450, 500, 600, 625 mm

Minimum volume flow rate, with ΔtZ = –6 K 

20 – 200 l/s or 72 – 720 m³/h

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

70 – 465 l/s or 256 – 1674 m³/h

Supply air to room air temperature difference

–12 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.

ADD-*-ZH (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)

250

20

72

7

16

9

17

19

17

250

35

126

21

29

29

31

58

31

250

50

180

43

38

58

41

119

41

250

70

256

87

50

118

52

240

53

300

30

108

5

<15

8

<15

16

15

300

60

216

22

29

32

31

64

33

300

90

324

49

40

72

44

144

46

300

120

432

88

50

127

53

255

56

400

55

198

7

16

9

16

19

20

400

100

360

23

31

31

32

64

37

400

145

522

49

42

66

44

134

49

400

185

666

80

50

107

54

219

58

450

70

252

5

<15

7

<15

14

16

450

140

504

21

29

29

31

57

35

450

200

720

42

40

59

42

115

46

450

275

990

80

50

112

53

218

60

500

85

306

6

<15

9

17

19

22

500

155

558

21

29

31

33

64

38

500

225

810

44

40

65

44

135

50

500

300

1080

79

50

116

55

240

62

600 625

200

720

14

23

18

24

38

34

600 625

290

1044

29

34

38

36

80

44

600 625

380

1368

50

43

65

45

138

53

600 625

465

1674

75

50

97

53

206

61


ADD-*-ZV (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)

250

20

72

5

<15

8

16

15

17

250

40

144

20

31

31

35

58

36

250

60

216

44

43

70

48

131

50

250

75

270

69

50

109

57

205

60

300

30

108

3

<15

5

<15

13

<15

300

60

216

12

27

22

31

51

36

300

95

342

31

40

55

45

129

52

300

130

468

58

50

103

56

241

71

400

55

198

4

<15

7

16

17

23

400

105

378

14

29

24

33

62

41

400

155

558

32

41

52

45

134

56

400

205

738

55

50

91

55

235

70

450

70

252

3

<15

4

<15

11

17

450

145

522

11

28

19

31

48

37

450

220

792

26

40

43

45

110

51

450

295

1062

47

50

78

56

198

63

500

85

306

4

<15

5

<15

17

23

500

155

558

12

29

18

33

56

42

500

225

810

26

41

38

45

118

55

500

295

1062

45

50

66

54

203

72

600 625

200

720

9

27

14

30

34

35

600 625

280

1008

17

36

27

40

66

45

600 625

355

1278

28

43

43

47

106

53

600 625

435

1566

41

50

65

54

159

61


Design ceiling swirl diffusers with square or circular diffuser face, for comfort zones with particularly demanding requirements of aesthetics and design. For supply air or extract air. Excellent aerodynamic and acoustic function due to swirl unit for horizontal swirling air discharge, creating high levels of induction. For installation into all types of suspended ceilings.

Ready-to-install component which consists of the diffuser face, swirl unit, plenum box with equalising element, side entry or top entry spigot, and suspension holes or suspension lugs.

The diffuser face is fixed to the cross bar with a central screw.

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

  • For the creative design of ceilings in comfort zones
  • Diffuser faces in many different designs
  • For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
  • Horizontal or vertical duct connection

Materials and surfaces

  • Diffuser face, swirl unit, plenum box and cross bar made of galvanised sheet steel
  • Discharge nozzle made of aluminium
  • Lip seal made of rubber
  • Swirl unit and discharge nozzle dip coated RAL 9005, jet black
  • Diffuser face powder-coated RAL 9010, pure white
  • P1: Powder-coated, RAL CLASSIC colour

Technical data

  • Nominal sizes: 250, 300, 400, 450, 500, 600, 625 mm
  • Minimum volume flow rate, with ΔtZ = –6 K: 20 – 200 l/s or 72 – 720 m³/h
  • Maximum volume flow rate, with LWA ≅ 50 dB(A): 70 – 465 l/s or 256 – 1674 m³/h
  • Supply air to room air temperature difference: –12 to +10 K

Sizing data

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

Air-regenerated noise

  • LWA _______________________ [dB(A)]

00133919_0

 Type
ADD       Ceiling swirl diffuser

 Construction style
R       Circular (not with nominal size 625)
Q       Square

 Connection
ZH       Horizontal, supply air
ZV       Vertical, supply air
AH       Horizontal, extract air
AV       Vertical, extract air

 Damper blade for volume flow rate balancing
       No entry: none
M       With
       Only for connections ZH and AH
MN       With cords and pressure tap

 

 Accessories
       No entry: none
L       With lip seal

 Nominal size [mm]
250
300
400
450
500
600
625        (nur ADD-Q)

 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 %

Order example: ADD-Q-ZH-M-L/625

Construction style

Square

System

Supply air

Connection

Horizontal

Damper blade for volume flow rate balancing

With damper blade

Accessories

With lip seal

Nominal size

625

Exposed surface

RAL 9010, pure white, gloss level 50 %


 

Variants, Dimensions and weight, Product details

  • Variants
  • Dimensions and weight
  • Product details

ADD-Q-*-H

Designed for high comfort

Together with renowned designers and architects we have developed ceiling, wall, staircase and floor diffusers and grilles that are not only aesthetic design elements, but also meet demanding ventilation and acoustic requirements.

Variant

  • Ceiling swirl diffuser with square diffuser face
  • With plenum box for horizontal duct connection

Nominal sizes

  • 250, 300, 400, 450, 500, 600, 625

Parts and characteristics

  • Square diffuser face
  • Plenum box for horizontal duct connection
  • Circular opening to accommodate the diffuser face
  • Equalising element that ensures a uniform airflow through the diffuser face (supply air variant)
  • Simple installation of the diffuser face due to central fixing screw with decorative cap
  • Damper blade for volume flow rate balancing (optional)
  • Pressure tap and cord-operated damper blade for volume flow rate balancing (optional)
  • Lip seal (optional)

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)

ADD-Q-*-V

Designed for high comfort

Together with renowned designers and architects we have developed ceiling, wall, staircase and floor diffusers and grilles that are not only aesthetic design elements, but also meet demanding ventilation and acoustic requirements.

Variant

  • Ceiling swirl diffuser with square diffuser face
  • With plenum box for vertical duct connection

Nominal sizes

  • 250, 300, 400, 450, 500, 600, 625

Parts and characteristics

  • Square diffuser face
  • Plenum box for vertical duct connection
  • Circular opening to accommodate the diffuser face
  • Equalising element that ensures a uniform airflow through the diffuser face (supply air variant)
  • Simple installation of the diffuser face due to central fixing screw with decorative cap
  • Damper blade for volume flow rate balancing (optional)
  • Lip seal (optional)

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)

ADD-R-*-H

Designed for high comfort

Together with renowned designers and architects we have developed ceiling, wall, staircase and floor diffusers and grilles that are not only aesthetic design elements, but also meet demanding ventilation and acoustic requirements.

Variant

  • Ceiling swirl diffuser with circular diffuser face
  • With plenum box for horizontal duct connection

Nominal sizes

  • 250, 300, 400, 450, 500, 600, 625

Parts and characteristics

  • Circular diffuser face
  • Plenum box for horizontal duct connection
  • Circular opening to accommodate the diffuser face
  • Equalising element that ensures a uniform airflow through the diffuser face (supply air variant)
  • Simple installation of the diffuser face due to central fixing screw with decorative cap
  • Damper blade for volume flow rate balancing (optional)
  • Pressure tap and cord-operated damper blade for volume flow rate balancing (optional)
  • Lip seal (optional)

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)

ADD-R-*-V

Designed for high comfort

Together with renowned designers and architects we have developed ceiling, wall, staircase and floor diffusers and grilles that are not only aesthetic design elements, but also meet demanding ventilation and acoustic requirements.

Variant

  • Ceiling swirl diffuser with circular diffuser face
  • With plenum box for vertical duct connection

Nominal sizes

  • 250, 300, 400, 450, 500, 600, 625

Parts and characteristics

  • Circular diffuser face
  • Plenum box for vertical duct connection
  • Circular opening to accommodate the diffuser face
  • Equalising element that ensures a uniform airflow through the diffuser face (supply air variant)
  • Simple installation of the diffuser face due to central fixing screw with decorative cap
  • Damper blade for volume flow rate balancing (optional)
  • Lip seal (optional)

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)

ADD-Q-*-H

Nominal size
□Q1
mm
H1
mm
□Q3
mm
H3
mm
ØD4
mm
H4
mm
ØD
mm
A
mm
C
mm
Plenum box
m
kg
250 248 8 266 255 202 220 123 161 48 AK-Uni-019 3.6
300 298 8 290 285 258 250 158 174 50 AK-Uni-020 4.4
400 398 8 372 330 314 295 198 199 50 AK-Uni-021 6.7
450 448 8 476 380 362 345 248 224 48 AK-Uni-022 9.0
500 498 8 476 380 426 345 248 224 48 AK-Uni-023 10.2
600 598 8 590 445 578 410 313 257 50 AK-Uni-025 14.2
625 623 8 590 445 578 410 313 257 50 AK-Uni-025 14.5


ADD-Q-*-V

Nominal size
□Q1
mm
H1
mm
ØD3
mm
H3
mm
ØD
mm
C
mm
m
kg
250 248 8 143 192 123 50 2.0
300 298 8 199 192 158 50 2.4
400 398 8 255 192 198 50 3.3
450 448 8 311 222 248 50 4.5
500 498 8 367 222 248 50 5.8
600 598 8 479 252 313 50 8.4
625 623 8 479 252 313 50 8.7


ADD-R-*-H

Nominal size
ØD1
mm
H1
mm
□Q3
mm
H3
mm
ØD4
mm
H4
mm
ØD
mm
A
mm
C
mm
Plenum box
m
kg
250 250 8 266 255 202 220 123 161 48 AK-Uni-019 3.5
300 300 8 290 285 258 250 158 174 50 AK-Uni-020 4.2
400 400 8 372 330 314 295 198 199 50 AK-Uni-021 6.4
450 450 8 476 380 362 345 248 224 48 AK-Uni-022 8.6
500 500 8 476 380 426 345 248 224 48 AK-Uni-023 9.7
600 600 8 590 445 578 410 313 257 50 AK-Uni-025 13.6


ADD-R-*-V

Nominal size
ØD1
mm
H1
mm
ØD3
mm
H3
mm
ØD
mm
C
mm
m
kg
250 250 8 143 192 123 50 1.6
300 300 8 199 192 158 50 2.2
400 400 8 255 192 198 50 3.0
450 450 8 311 222 248 50 4.1
500 500 8 367 222 248 50 5.3
600 600 8 479 252 313 50 7.8


ADD-Q

Nominal size
□Q1
mm
ØD2
mm
Aeff

250 248 192 0.0092
300 298 248 0.0137
400 398 304 0.0259
450 448 360 0.0336
500 498 416 0.0424
600 598 528 0.0635
625 623 528 0.0635


ADD-R

Nominal size
ØD1
mm
ØD2
mm
Aeff

250 250 192 0.0092
300 300 248 0.0137
400 400 304 0.0259
450 450 360 0.0336
500 500 416 0.0424
600 600 528 0.0635


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
  • Freely suspended installation only with an extended border (supply air variant)
  • 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.

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.

  • Ceiling diffusers with universal plenum box and damper blade (variant -M): The diffuser face can be removed to access the damper blade; the damper blade can then be set to any position between 0 and 90°
  • Ceiling diffusers with universal plenum box, damper blade and pressure tap (variant -MN): The diffuser face need not be removed since the damper blade can be set with two cords (white and green).

Volume flow rate measurement

Ceiling diffusers with universal plenum box, damper blade and pressure tap (variant -MN) allow for volume flow rate balancing even with the diffuser face in place.

  • Connect the measuring tube to the digital manometer
  • Read the effective pressure
  • Read the volume flow rate off the characteristic or calculate it
  • If necessary, adjust the damper blade position with the cords


A characteristic is included with each AK-Uni plenum box.

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.

Nedladdningar

  • produkt information

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