Type AK-Uni

Universal plenum box, available in many variants

Plenum boxes for supply air and extract air

  • For circular and square diffuser faces
  • Plenum box made of galvanised sheet steel
  • For supply and extract air
  • For all types of ceiling systems
  • Horizontal duct connection
  • Equalising element that ensures a uniform airflow through the diffuser face (supply air variant)
  • For comfort zones and industrial zones


Optional equipment and accessories

  • Damper blade for volume flow rate balancing
  • Pressure tap and cord-operated damper blade for volume flow rate balancing
  • Lip seal

AK-Uni-004-ZL-M-L 00133411_0


For circular diffuser faces
00129443_0


00129443_0
00134148_0
  • Application
  • Description

Application

  • Type AK-Uni plenum boxes for the connection of circular and square diffuser faces to circular ducts, suitable for supply air or extract air applications in comfort and industrial zones
  • For diffuser faces of Types VDW, TDV, RFD, FD, TDF, ADD, ADLQ, DLQ, ADLR, and DLQL, with central screw fixing
  • For variable and constant volume flows
  • For all types of ceiling systems

Special characteristics

  • Plenum box made of galvanised sheet steel
  • For all types of ceiling systems
  • For circular and square diffuser faces
  • Horizontal duct connection
  • For comfort zones and industrial zones

Variants

  • AK-Uni-...-ZL: Supply air
  • AK-Uni-...-AL: Extract air

Parts and characteristics

  • Casing with spigot and cross bar for fixing 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

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

  • Casing, cross bar and spigot made of galvanised sheet steel
  • Equalising element made of galvanised, perforated sheet steel
  • Lip seal made of rubber

Maintenance

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

Technical information

Function, Technical data – supply air, Technical data – extract air, Specification text, Order code

  • Function
  • Technical data – supply air
  • Technical data – extract air
  • Specification text
  • Order code
Schematic illustration 00129249_0
A Plenum box for square diffuser faces
B Plenum box for circular diffuser faces
① Plenum box
② Central fixing screw
③ Cross bar
④ Suspension hole
⑤ Spigot

Optional
⑥ Lip seal
⑦ Damper blade for volume flow rate balancing
⑧ Pressure tap
⑨ Green cord for closing the damper blade
⑩ White cord for opening the damper blade
⑪ Measuring tube
⑫ Text label indicating plenum box variant


Functional description

Plenum boxes are used to connect ceiling diffusers to circular ducts and to fix the diffuser face.

Type AK-Uni plenum boxes are fitted with an equalising element that ensures that the air is evenly distributed to the room.

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.

Plenum boxes for square diffuser faces

Plenum boxes for circular diffuser faces

Plenum boxes for Type RFD diffuser faces

Legende verwendeter Abkürzungen

ØD [mm]

Außendurchmesser des Anschlussstutzens

Q₃ [mm]

Abmessungen eines quadratischen Anschlusskastens

H₃ [mm]

Höhe eines Deckenluftdurchlasses mit Anschlusskasten von der Unterkante der abgehängten Decke bis zur Oberkante des Anschlusskastens oder des Anschlussstutzens

A [mm]

Lage des Anschlussstutzens, definiert durch den Abstand der Mittellinie zur Unterkante der abgehängten Decke

C [mm]

Länge des Anschlussstutzens

m [kg]

Gewicht (Masse)


Standard combinations

Variant Diffuser face Variant
Variant VDW-Q TDV-SA-Q FD-Q TDF-SA-Q
Variant Nominal size K value Nominal size K value Nominal size K value Nominal size K value
Variant mm l/s m³/h mm l/s m³/h mm l/s m³/h mm l/s m³/h

AK-Uni-001

300 × 8

10.3

36.9

300

13.2

47.7

300

10.1

36.5

300

13.2

47.7

AK-Uni-002

400 × 16

19.6

70.7

400

22.8

82.1

400

19.6

70.7

400

22.8

82.1

AK-Uni-003

500 × 24

24.2

87.1

500

27.9

100.5

500

25.8

92.7

500

27.9

100.5

AK-Uni-004

600 × 24 625 × 24

34.9

125.8

600 625

40.4

145.5

600 625

125.8

600 625

40.4

145.5

AK-Uni-005

600 × 48

43.0

154.8








AK-Uni-006

625 × 54

44.2

158.9








AK-Uni-007

825 × 72

72.8

262.2









Standard combinations

Variant Diffuser face Variant
Variant ADD-Q ADLQ DLQ ADLR-Q
Variant Nominal size K value Nominal size K value Nominal size K value
Variant mm l/s m³/h mm l/s m³/h mm l/s m³/h

AK-Uni-002


400

30.1

108.2


AK-Uni-008


250

10.1

36.2


AK-Uni-009


300

14.8

53.4


AK-Uni-010


500

48.3

173.7


AK-Uni-011


600 625

72.2

260.0


AK-Uni-019

250

7.6

27.4


1

8.3

29.8

AK-Uni-020

300

14.5

52.2


2

14.8

53.3

AK-Uni-021

400

22.2

79.9


3

24.0

86.2

AK-Uni-022

450

35.7

128.7


4

35.7

128.7

AK-Uni-023

500

39.8

143.4


5

41.8

150.6

AK-Uni-024





6

57.4

206.8

AK-Uni-025

600 625

68.2

245.7


7

64.4

231.9

AK-Uni-026





8

70.7

254.7


Alternative combinations

Variant Diffuser face Variant
Variant VDW-Q FD-Q ADLQ DLQ
Variant Nominal size K value Nominal size K value Nominal size K value
Variant mm l/s m³/h mm l/s m³/h mm l/s m³/h

AK-Uni-004





600< 625<

50.7

182.4

AK-Uni-005

600 × 24 625 × 24

34.9

125.8

600 625

34.9

125.8

600< 625<

50.7

182.4

AK-Uni-006

625 × 24

34.9

125.8

625

34.9

125.8

625<

50.7

182.4

AK-Uni-010

500 × 24>

28.9

104.1

500>

28.7

103.5


AK-Uni-011

600 × 24> 625 × 24>

39.4

141.9

600> 625>

39.4

141.9


AK-Uni-012

600 × 24> 625 × 24>

39.4

141.9

600< 625<

39.4

141.9

600 625

72.2

260.0

AK-Uni-012

600 × 48>

50.5

182.0





AK-Uni-027

625 × 24>

39.4

141.9

625>

39.4

141.9

625

72.2

260.0

AK-Uni-027

625 × 54>

53.2

191.4





< Smaller connection diameter

> Larger connection diameter


Standard combinations

Variant Diffuser face Variant
Variant VDW-R TDV-SA-R FD-R TDF-SA-R
Variant Nominal size K value Nominal size K value Nominal size K value Nominal size K value
Variant mm l/s m³/h mm l/s m³/h mm l/s m³/h mm l/s m³/h

AK-Uni-013

300 × 8

9.4

33.8

300

13.2

47.7

300

10.2

36.5

300

13.2

47.7

AK-Uni-014

400 × 16

19.6

70.7

400

22.8

82.1

400

19.6

70.7

400

22.8

82.1

AK-Uni-015

500 × 24

23.1

83.0

500

27.9

100.5

500

26.2

94.4

500

27.9

100.5

AK-Uni-016

600 × 24 625 × 24

34.5

124.3

600 625

40.4

145.5

600 625

34.5

124.3

600 625

40.4

145.5

AK-Uni-017

600 × 48

44.0

158.3









Standard combinations

Variant Diffuser face Variant
Variant ADD-R ADLR
Variant Nominal size K value Nominal size K value
Variant mm l/s m³/h mm l/s m³/h

AK-Uni-019

250

7.6

27.4

1

8.3

29.8

AK-Uni-020

300

14.5

52.2

2

14.8

53.3

AK-Uni-021

400

22.2

79.9

3

24.0

86.2

AK-Uni-022

450

35.7

128.7

4

35.7

128.7

AK-Uni-023

500

39.8

143.4

5

41.8

150.6

AK-Uni-024


6

57.4

206.8

AK-Uni-025

600

68.2

245.7

7

64.4

231.9

AK-Uni-026


8

70.7

254.7


Alternative combinations

Variant Diffuser face Variant
Variant VDW-R FD-R ADLR
Variant Nominal size K value Nominal size K value Nominal size K value
Variant mm l/s m³/h mm l/s m³/h mm l/s m³/h

AK-Uni-013





2

14.8

53.3

AK-Uni-014





4>

31.3

112.6

AK-Uni-016





7<

51.1

184.1

AK-Uni-017

600 × 24 625 × 24

34.5

124.3

600 625

34.5

124.3

7

51.1

184.1

AK-Uni-018

625 × 24

34.0

122.5

625

34.0

122.5

8<

51.1

183.9

AK-Uni-022

400 × 16>

17.6

67.1

400>

18.6

67.1


AK-Uni-024

500 × 24>

28.1

101.3

500>

31.1

111.8


AK-Uni-025

600 × 24> 625 × 24>

36.5

131.4

600> 625>

36.5

131.4


AK-Uni-025

600 × 48>

51.7

186.0





AK-Uni-026

625 × 24>

36.1

129.9

625>

36.1

129.9


< Smaller connection diameter

> Larger connection diameter


Standard combinations

Variant Nominal size RFD without discharge nozzle RFD with discharge nozzle
Variant Nominal size K value
Variant mm l/s m³/h l/s m³/h

AK-Uni-028

125

3.5

12.4

4.7

17.9

AK-Uni-029

160

5.2

18.7

7.3

26.3

AK-Uni-030

200

7.1

25.5

12.2

43.9

AK-Uni-031

250

12.9

46.4

19.0

68.4

AK-Uni-032

315

22.8

82.0

28.6

103.0

AK-Uni-033

400

34.5

124.3

37.3

134.4


Plenum boxes for square diffuser faces

Plenum boxes for circular diffuser faces

Standard combinations

Variant Diffuser face Variant
Variant VDW-Q TDV-SA-Q FD-Q TDF-SA-Q
Variant Nominal size K value Nominal size K value Nominal size K value Nominal size K value
Variant mm l/s m³/h mm l/s m³/h mm l/s m³/h mm l/s m³/h

AK-Uni-001

300 × 8

8.9

32.1

300

16.4

59.0

300

11.6

41.7

300

16.4

59.0

AK-Uni-001

300 × 8/0

15.6

56.0

300/0

27.3

98.2





AK-Uni-002

400 × 16

17.6

63.5

400

28.9

104.2

400

23.8

85.5

400

28.9

104.2

AK-Uni-002

400 × 16/0

34.4

123.9

400/0

43.1

155.2





AK-Uni-003

500 × 24

25.7

92.6

500

38.5

138.7

500

38.3

137.9

500

38.5

138.7

AK-Uni-003

500 × 24/0

52.7

189.7

500/0

65.9

237.1





AK-Uni-004

600 × 24 625 × 24

41.8

150.6

600 625

52.3

188.2

600 625

55.7

200.5

600 625

52.3

188.2

AK-Uni-004

600 × 24/0 625 × 24/0

63.9

230.1

600/0 625/0

94.0

338.3





AK-Uni-005

600 × 48

54.7

197.0








AK-Uni-005

600 × 48/0

87.8

316.1








AK-Uni-006

625 × 54

59.6

214.7








AK-Uni-006

625 × 54/0

96.3

346.1








AK-Uni-007

825 × 72

96.7

348.7








AK-Uni-007

825 × 72/0

173.3

623.9








... /0: Diffuser face without air control blades


Standard combinations

Variant Diffuser face Variant
Variant ADD-Q ADLQ DLQ ADLR-Q
Variant Nominal size K value Nominal size K value Nominal size K value
Variant mm l/s m³/h mm l/s m³/h mm l/s m³/h

AK-Uni-002


400

36.3

130.8


AK-Uni-008


250

9.8

35.3


AK-Uni-009


300

18.6

66.9


AK-Uni-010


500

68.7

247.2


AK-Uni-011


600 625

114.6

412.6


AK-Uni-019

250

8.7

31.4


1

7.7

27.8

AK-Uni-020

300

20.6

74.0


2

14.8

53.2

AK-Uni-021

400

26.9

97.0


3

20.7

74.4

AK-Uni-022

450

39.3

141.5


4

30.1

108.2

AK-Uni-023

500

54.1

194.9


5

45.1

162.4

AK-Uni-024





6

56.4

203.0

AK-Uni-025

600 625

71.1

256.0


7

72.8

262.1

AK-Uni-026





8

97.5

351.1


Alternative combinations

Variant Diffuser face Variant
Variant VDW-Q FD-Q ADLQ DLQ
Variant Nominal size K value Nominal size K value Nominal size K value
Variant mm l/s m³/h mm l/s m³/h mm l/s m³/h

AK-Uni-004





600< 625<

139.1

500.6

AK-Uni-005

600 × 24 625 × 24

42.1

151.6

600 625

44.1

158.8

600< 625<

111.2

400.3

AK-Uni-005

600 × 24/0 625 × 24/0

65.6

236.0





AK-Uni-006

625 × 24

40.3

145.2

625

50.6

182.1

625<

137.9

496.4

AK-Uni-006

625 × 24/0

66.8

240.5





AK-Uni-010

500 × 24>

27.4

98.8

500>

39.8

143.3


AK-Uni-010

500 × 24/0>

49.4

177.8





AK-Uni-011

600 × 24> 625 × 24>

45.1

162.3

600> 625>

60.3

217.1


AK-Uni-011

600 × 24/0> 625 × 24/0>

69.1

248.7





AK-Uni-012

600 × 24> 625 × 24>

42.8

154.1

600< 625<

60.0

216.1

600 625

114.3

411.6

AK-Uni-012

600 × 24/0> 625 × 24/0>

70.6

254.3





AK-Uni-012

600 × 48>

58.4

210.2





AK-Uni-012

600 × 48/0>

94.0

338.4





AK-Uni-027

625 × 24>

40.4

154.4

625>

58.8

211.8

625

118.9

428.0

AK-Uni-027

625 × 24/0>

69.4

250.0





AK-Uni-027

625 × 54>

64.0

230.3





AK-Uni-027

625 × 54/0>

104.7

377.0





... /0: Diffuser face without air control blades

< Smaller connection diameter

> Larger connection diameter


Standard combinations

Variant Diffuser face Variant
Variant VDW-R TDV-SA-R FD-R TDF-SA-R
Variant Nominal size K value Nominal size K value Nominal size K value Nominal size K value
Variant mm l/s m³/h mm l/s m³/h mm l/s m³/h mm l/s m³/h

AK-Uni-013

300 × 8

9.3

33.6

300

16.4

59.0

300

13.0

46.7

300

16.4

59.0

AK-Uni-013

300 × 8/0

16.2

58.1

300/0

26.7

96.7





AK-Uni-014

400 × 16

17.9

64.3

400

28.9

104.2

400

25.2

90.6

400

28.9

104.2

AK-Uni-014

400 × 16/0

35.4

127.4

400/0

44.8

161.1





AK-Uni-015

500 × 24

25.3

90.9

500

38.5

138.7

500

38.4

138.1

500

38.5

138.7

AK-Uni-015

500 × 24/0

50.9

183.2

500/0

66.8

240.6





AK-Uni-016

600 × 24 625 × 24

42.2

151.9

600 625

52.3

188.2

600 625

57.7

207.7

600 625

52.3

188.2

AK-Uni-016

600 × 24/0 625 × 24/0

65.3

235.1

600/0 625/0

95.1

342.5





AK-Uni-017

600 × 48

58.1

209.1








AK-Uni-017

600 × 48/0

88.0

316.9








... /0: Diffuser face without air control blades


Standard combinations

Variant Diffuser face Variant
Variant ADD-R ADLR
Variant Nominal size K value Nominal size K value
Variant mm l/s m³/h mm l/s m³/h

AK-Uni-019

250

8.7

31.4

1

7.7

27.8

AK-Uni-020

300

20.6

74.0

2

14.8

53.2

AK-Uni-021

400

26.9

97.0

3

20.7

74.4

AK-Uni-022

450

39.3

141.5

4

30.1

108.2

AK-Uni-023

500

54.1

194.9

5

45.1

162.4

AK-Uni-024


6

56.4

203.0

AK-Uni-025

600

71.1

256.0

7

72.8

262.1

AK-Uni-026


8

97.5

351.1


Alternative combinations

Variant Diffuser face Variant
Variant VDW-R FD-R ADLR
Variant Nominal size K value Nominal size K value Nominal size K value
Variant mm l/s m³/h mm l/s m³/h mm l/s m³/h

AK-Uni-013





2

14.5

52.1

AK-Uni-014





4>

30.5

109.9

AK-Uni-016





7<

76.7

276.2

AK-Uni-017

600 × 24 625 × 24

40.3

145.0

600 625

58.1

209.0

7

71.0

255.7

AK-Uni-017

600 × 24/0 625 × 24/0

67.3

242.1





AK-Uni-018

625 × 24

625

50.6

182.1

8<

101.1

364.0

AK-Uni-018

625 × 24/0







AK-Uni-022

400 × 16>

18.0

64.9

400>

25.0

90.0


AK-Uni-022

400 × 16/0>

31.5

113.3





AK-Uni-024

500 × 24>

28.6

103.0

500>

40.2

144.6


AK-Uni-024

500 × 24/0>

45.0

161.9





AK-Uni-025

600 × 24> 625 × 24>

37.7

158.2

600> 625>

59.3

213.6


AK-Uni-025

600 × 24/0> 625 × 24/0>

70.5

253.9





AK-Uni-025

600 × 48>

59.0

212.3





AK-Uni-025

600 × 48/0>

96.5

347.4





AK-Uni-026

625 × 24>

625>

61.0

219.4


AK-Uni-026

625 × 24/0>







... /0: Diffuser face without air control blades

< Smaller connection diameter

> Larger connection diameter


Universal plenum boxes for the connection of circular and square diffuser faces to circular ducts, suitable for supply air or extract air applications. For installation into all types of suspended ceilings.

Ready-to-install component which consists of the plenum box, equalising element (only supply air variants), side entry spigot, cross bar, and suspension holes.

The diffuser face is fixed to the cross bar with a central screw, concealed by a decorative cap.

Spigot suitable for ducts to EN 1506 or EN 13180.

Special characteristics

  • Plenum box made of galvanised sheet steel
  • For all types of ceiling systems
  • For circular and square diffuser faces
  • Horizontal duct connection
  • For comfort zones and industrial zones

Materials and surfaces

  • Casing, cross bar and spigot made of galvanised sheet steel
  • Equalising element made of galvanised, perforated sheet steel
  • Lip seal made of rubber

00129030_0

 Type
AK-Uni       Plenum box

 Variant
001 to 033

 

 System
ZL       Supply air
AL       Extract air

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

 Accessories
       No entry: none
L       With lip seal

Order example: AK-Uni-003-AL-MN-L

Variant

003

System

Extract air

Damper blade for volume flow rate balancing

Volume flow rate adjustment with cords and pressure tap

Accessories

With lip seal


 

Variants, Dimensions and weight

  • Variants
  • Dimensions and weight
AK-Uni-004-ZL-M-L
00133411_0


00133411_0
00132131_0

Plenum boxes for square diffuser faces

Plenum boxes for circular diffuser faces

Plenum boxes for Type RFD diffuser faces

Standardverwendungen für quadratische Frontdurchlässe

Produktvariante ØD Frontdurchlass Variante
Produktvariante ØD VDW-Q TDV-SA-Q FD-Q TDF-SA-Q ADD-Q ADLQ DLQ ADLR-Q DLQL

AK-Uni-001

158

300 × 8

300

300

300


300

AK-Uni-002

198

400 × 16

400

400

400

400

400

AK-Uni-003

198

500 × 24

500

500

500



AK-Uni-004

248

600 × 24 625 × 24

600 625

600 625

600 625



AK-Uni-005

248

600 × 48






AK-Uni-006

248

625 × 54






AK-Uni-007

313

825 × 72






AK-Uni-008

158






250

250

AK-Uni-009

158






300

AK-Uni-010

248






500

500

AK-Uni-011

313






600 625

AK-Uni-012

313








600

AK-Uni-019

123





250

1

AK-Uni-020

158





300

2

AK-Uni-021

198





400

3

AK-Uni-022

248





450

4

AK-Uni-023

248





500

5

AK-Uni-024

313







6

AK-Uni-025

313





600 625

7

AK-Uni-026

313







8


Alternative Verwendungen für quadratische Frontdurchlässe

Produktvariante ØD Frontdurchlass Variante
Produktvariante ØD VDW-Q FD-Q ADLQ DLQ

AK-Uni-004

248



600<, 625<

AK-Uni-005

248

600 × 24 625 × 24

600 625

600< 625<

AK-Uni-006

248

625 × 24

625

625<

AK-Uni-010

248

500 × 24>

500>

AK-Uni-011

313

600 × 24> 625 × 24>

600> 625>

AK-Uni-012

313

600 × 24> 625 × 24>

600< 625<

600 625

AK-Uni-012

313

600 × 48>

AK-Uni-027

313

625 × 24>

625>

625

AK-Uni-027

313

625 × 54>

< Kleinerer Anschlussdurchmesser

> Größerer Anschlussdurchmesser


Standardverwendungen für runde Frontdurchlässe

Produktvariante ØD Frontdurchlass Variante
Produktvariante ØD VDW-R TDV-SA-R FD-R TDF-SA-R ADD-R ADLR

AK-Uni-013

158

300 × 8

300

300

300

AK-Uni-014

198

400 × 16

400

400

400

AK-Uni-015

198

500 × 24

500

500

500

AK-Uni-016

248

600 × 24 625 × 24

600 625

600 625

600 625

AK-Uni-017

248

600 × 48




AK-Uni-019

123





250

1

AK-Uni-020

158





300

2

AK-Uni-021

198





400

3

AK-Uni-022

248





450

4

AK-Uni-023

248





500

5

AK-Uni-024

313






6

AK-Uni-025

313





600

7

AK-Uni-026

313






8


Alternative Verwendungen für runde Frontdurchlässe

Produktvariante ØD Frontdurchlass Variante
Produktvariante ØD VDW-R FD-R ADLR

AK-Uni-013

158



2

AK-Uni-014

198



4>

AK-Uni-016

248



7<

AK-Uni-017

248

600 × 24 625 × 24

600 625

7

AK-Uni-018

248

625 × 24

625

8<

AK-Uni-022

248

400 × 16>

400>

AK-Uni-024

313

500 × 24>

500>

AK-Uni-025

313

600 × 24> 625 × 24>

600> 625>

AK-Uni-025

313

600 × 48>

AK-Uni-026

313

625 × 24>

625>

< Kleinerer Anschlussdurchmesser

> Größerer Anschlussdurchmesser


Standardverwendungen für Frontdurchlass RFD

Produktvariante ØD Frontdurchlass Serie
Produktvariante ØD RFD

AK-Uni-028

98

125

AK-Uni-029

123

160

AK-Uni-030

158

200

AK-Uni-031

198

250

AK-Uni-032

248

315

AK-Uni-033

313

400


Universal plenum box AK-Uni for square diffuser faces
00129876_0


00129876_0
00129882_0
00129856_0

Q

Produktvariante
 ØD
mm
 □Q3
mm
 H3
mm
 A
mm
 C
mm
 m
kg
AK-Uni-001 158 290 250 139 50 3.0
AK-Uni-002 198 372 295 164 50 4.5
AK-Uni-003 198 476 295 164 50 6.0
AK-Uni-004 248 567 345 199 48 8.2
AK-Uni-005 248 590 345 189 48 8.6
AK-Uni-006 248 615 345 189 48 9.0
AK-Uni-007 313 806 410 222 50 16.0
AK-Uni-008 158 216 250 139 50 2.2
AK-Uni-009 158 266 250 139 50 2.7
AK-Uni-010 248 476 345 189 48 6.6
AK-Uni-011 313 567 410 222 50 9.2
AK-Uni-012 313 590 410 222 50 9.6
AK-Uni-027 313 615 410 222 50 10.2

Weights apply to the supply air variant


R

Produktvariante
 □Q3
mm
 H3
mm
 ØD4
mm
 H4
mm
 ØD
mm
 A
mm
 C
mm
 m
kg
AK-Uni-013 290 285 278 250 158 174 50 3.4
AK-Uni-014 372 330 362 295 198 199 50 5.1
AK-Uni-015 476 330 460 295 198 199 50 6.9
AK-Uni-016 567 380 557 345 248 234 48 9.3
AK-Uni-017 590 380 578 345 248 224 48 9.7
AK-Uni-018 615 380 590 345 248 224 48 10.3
AK-Uni-019 266 255 202 220 123 161 48 2.9
AK-Uni-020 290 285 258 250 158 174 50 3.5
AK-Uni-021 372 330 314 295 198 199 50 5.2
AK-Uni-022 476 380 362 345 248 224 48 7.8
AK-Uni-023 476 380 426 345 248 224 48 7.6
AK-Uni-024 567 445 482 410 313 257 50 10.5
AK-Uni-025 590 445 578 410 313 257 50 10.8
AK-Uni-026 615 445 590 410 313 257 50 11.4

Weights apply to the supply air variant


RFD

Produktvariante
 □Q3
mm
 H3
mm
 ØD4
mm
 H4
mm
 ØD
mm
 A
mm
 C
mm
 m
kg
AK-Uni-028 216 255 125 195 98 170 50 2.5
AK-Uni-029 266 280 160 220 123 182 48 3.0
AK-Uni-030 290 310 200 250 158 194 50 3.5
AK-Uni-031 476 355 250 295 198 219 50 7.5
AK-Uni-032 567 395 315 345 248 244 48 10.0
AK-Uni-033 615 470 400 410 313 277 50 12.0

Weights apply to the supply air variant


Installation details, Commissioning, Basic information and nomenclature

  • Installation details
  • Commissioning
  • Basic information and nomenclature

Installation and commissioning

  • Note the installation details for ceiling diffusers
  • Horizontal duct connection
  • If necessary, carry out volume flow rate balancing with the damper blade

AK-Uni-...-MN Volume flow rate balancing
00151153_0
① Damper blade
② White cord for opening the damper blade

Open, 0°

00151153_0
00151159_0
00151140_0
00132583_0
00134024_0

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

Nomenclature

LWA [dB(A)]

A-weighted sound power level of air-regenerated noise

V [m³/h] and [l/s]

Volume flow rate

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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  • certificates
  • operation manuals

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For general question regarding products or services you can also call:
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