JZ

For shutting off the airflow in air conditioning systems

Rectangular multileaf dampers for volume flow and pressure control as well as for shutting off ducts and openings in walls and ceiling slabs

  • Maximum dimensions 2000 × 1995 mm
  • Casing air leakage to EN 1751, class C
  • Aerofoil parallel or opposed action blades
  • Blades interconnected by external linkage (for parallel or opposed blade action)
  • Available in standard sizes and many intermediate sizes
  • Can be combined with external weather louvres


Optional equipment and accessories

  • Actuators: Open/Close actuators, modulating actuators
  • Explosion-proof construction with pneumatic actuator or spring return actuator
  • Powder-coated construction

Multileaf damper, variant JZ-P-A2 00132203_0

Multileaf damper with actuator

  • Application
  • Description

Application

  • Multileaf dampers of Type JZ are used as an acting element in the volume flow and pressure control in air conditioning systems
  • For shutting off ducts and openings in walls and ceiling slabs
  • Parallel action blades are preferably used for opening/closing
  • Opposed action blades are due to their characteristics preferably used for variable operation
  • Stainless steel and powder-coated constructions with increased corrosion resistance
  • Steel and stainless steel variants with brass or stainless steel bearings are suitable for use in potentially explosive atmospheres (ATEX)

Special characteristics

  • Aerofoil blades
  • Low-maintenance, robust construction
  • No parts with silicone
  • Available in standard sizes and many intermediate sizes

Nominal sizes

  • B: 200 – 2000 mm, in increments of 1 mm
  • Width subdivided (BM): 2001 – 4150 mm, in increments of 1 mm
  • H: 180, 345, 510, 675, 840, 1005, 1170, 1335, 1500, 1665, 1830, 1995 mm (intermediate sizes 183 – 1998 in increments of 1 mm, except for standard size H – 1 mm, H + 1 mm, H + 2 mm)
  • Height subdivided (HM): 1999 – 4066 mm, in increments of 1 mm
  • Any combination of B × H

Variants

  • JZ-S: Multileaf damper with opposed blade action, made of galvanised sheet steel
  • JZ-P: Multileaf damper with parallel blade action, made of galvanised sheet steel
  • JZ-S-A2: Multileaf damper with opposed blade action, made of stainless steel
  • JZ-P-A2: Multileaf damper with parallel blade action, made of stainless steel

Construction

Duct connection

  • Corner holes on both sides
  • G: Flange holes on both sides


Bearings

  • Plastic bearings, operating temperature –20 – 100 °C
  • M: brass bearings, operating temperature –20 – 150 °C
  • E: stainless steel bearings, operating temperature –20 – 150 °C


Blades

Only for steel or stainless steel multileaf dampers with brass or stainless steel bearings (JZ-...-M, JZ-...-E)

  • V: reinforced blades

Parts and characteristics

  • Ready-to-install shut-off damper
  • Blades with external linkage
  • Drive arm

Attachments

  • Quadrant stays and limit switches: Quadrant stays to adjust the damper blades (stepless adjustment) and for capturing the end positions
  • Open/Close actuators: Actuators for opening and closing multileaf dampers
  • Modulating actuators: Actuators for stepless blade adjustment
  • Pneumatic actuators: Pneumatic actuators for opening and closing multileaf dampers
  • Explosion-proof actuators: Actuators for opening and closing multileaf dampers installed in potentially explosive atmospheres

Accessories

  • Installation subframe: Installation subframe for the fast and simple installation of multileaf dampers

Construction features

  • Rectangular casing, welded (P1: casing with screws), material thickness 1.25 mm
  • Blades, material thickness 1 mm
  • Flanges on both sides, suitable for duct connection, either flange holes or corner holes
  • External linkage, robust and durable, consisting of the coupling rod and and horizontal arms
  • Blade shafts, Ø12 mm, with notch to indicate the blade position (not for attachment ZS99)
  • With drive shaft as an attachment: For the position of the drive shaft see 'Dimensions and weight'
  • With actuator as an attachment: The actuator is attached to the second blade from the top
  • Construction and materials comply with the EU directive and guidelines for use in potentially explosive atmospheres (ATEX) for variants with brass or stainless steel bearings (-M, -E)

Materials and surfaces

  • Casing and blades made of galvanised sheet steel or stainless steel
  • Blade shafts, drive arm and external linkage made of galvanised steel or stainless steel
  • Plastic, brass or stainless steel bearings
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, DB colour

Standards and guidelines

  • Casing air leakage to EN 1751, class C

Maintenance

  • Maintenance-free as construction and materials are not subject to wear
  • Contamination should be removed as it may lead to corrosion and to increased closed blade air leakage

Technical information

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

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

Functional description

Multileaf dampers with external linkage can have parallel action blades or opposed action blades.

An external linkage transfers the synchronous rotational movement from the drive arm to the individual blades. Even very large multileaf dampers can be safely opened and closed with this type of linkage.

Opposed action blades close at different speeds since the linkage includes a transverse link. This facilitates the closing process and reduces the closed blade air leakage.

The torque for closing a multileaf damper must be such that the damper can be safely opened and closed.

For closure, the torque must suffice to ensure complete shut-off by the blades.

Opening is initiated without aerodynamic forces.

When air flows through the damper, the aerodynamic forces of the airflow create a closing force (torque) on the blades; this happens independent of the direction of the airflow. This closing force must be countered, or overcome. The blade position, or blade angle α, for which there is the largest torque depends, among other factors, on the fan characteristics.

Nominal sizes

200 × 180 mm – 2000 × 1995 mm

Operating temperature

–20 to 100 °C


JZ-*, JZ-*-A2, minimum torque

H B [mm]
H 200 400 600 800 1000 1200 1400 1600 1800 2000
mm Nm

180 – 1995

10

10

10

10

10

10

10

10

10

10


Steel and stainless steel multileaf dampers, free area

H B [mm]
H 200 400 600 800 1000 1200 1400 1600 1800 2000
mm

180 – 344

0.03

0.06

0.09

0.12

0.15

0.18

0.21

0.24

0.27

0.30

345 – 509

0.06

0.11

0.17

0.23

0.28

0.34

0.40

0.45

0.51

0.57

510 – 674

0.08

0.17

0.25

0.33

0.42

0.50

0.58

0.67

0.75

0.83

675 – 839

0.11

0.22

0.33

0.44

0.55

0.66

0.77

0.88

0.99

1.10

840 – 1004

0.14

0.27

0.41

0.55

0.69

0.82

0.96

1.10

1.23

1.37

1005 – 1169

0.16

0.33

0.49

0.66

0.82

0.98

1.15

1.31

1.47

1.64

1170 – 1334

0.19

0.38

0.57

0.76

0.95

1.14

1.33

1.52

1.72

1.91

1335 – 1499

0.22

0.43

0.65

0.87

1.09

1.30

1.52

1.74

1.96

2.17

1500 – 1664

0.24

0.49

0.73

0.98

1.22

1.47

1.71

1.95

2.20

2.44

1665 – 1829

0.27

0.54

0.81

1.08

1.36

1.63

1.90

2.17

2.44

2.71

1830 – 1994

0.30

0.60

0.89

1.19

1.49

1.79

2.08

2.38

2.68

2.98

1995

0.32

0.65

0.97

1.30

1.62

1.95

2.27

2.60

2.92

3.25

Intermediate sizes: Intermediate widths can be interpolated


Maximum static differential pressure for a closed multileaf damper

Construction B [mm]
Construction 800 1000 1200 1400 1600 1800 2000
Construction Δpst max
Construction Pa

Standard construction

2500

2000

1650

1400

1250

1100

1000

Brass bearings (-M)

3000

2500

2200

1950

1750

1600

1500

Stainless steel bearings (-E)

3000

2500

2200

1950

1750

1600

1500

Reinforced blades (-M-V, -E-V)

3500

3000

2700

2500

2300

2100

2000


JZ-S, JZ-S-A2, sound power level for a closed multileaf damper

Δpst Area B × H [m²]
Δpst 0.14 0.2 0.4 0.6 0.8 1.2 2 4
Δpst LWA
Pa dB(A)

100

57

58

61

63

64

66

68

71

200

63

65

68

69

71

72

75

77

500

71

72

76

78

79

81

83

84

1000

78

80

82

84

85

88

90

>90

1500

81

83

86

88

89

>90

>90

>90

2000

84

85

89

>90

>90

>90

>90

>90


JZ-P, JZ-P-A2, sound power level for a closed multileaf damper

Δpst Area B × H [m²]
Δpst 0.14 0.2 0.4 0.6 0.8 1.2 2 4
Δpst LWA
Pa dB(A)

100

57

58

61

63

64

64

68

71

200

63

65

68

69

71

71

75

78

500

71

72

76

78

79

79

85

87

1000

78

80

82

84

85

85

89

>90

1500

81

82

86

88

89

89

>90

>90

2000

84

86

89

>90

>90

>90

>90

>90


Quick sizing tables provide a good overview of the sound power levels and differential pressures that can be expected. Approximate intermediate values can be interpolated. Precise intermediate values and spectral data can be calculated with our Easy Product Finder design programme.

The sound power levels LWA apply to multileaf dampers with a cross-sectional area (B × H) of 1 m².

The differential pressures apply to multileaf dampers installed in ducts (installation type A).

Sizing example

Given data

Duct B × H = 600 × 675 mm

Multileaf damper JZ-S

Installation type A

V = 2400 l/s (8640 m³/h)

Calculation procedure

A = 0.600 × 0.675 = 0.405 m²

v = V ∕ A = 2400 ∕ 0.405 ( ∕ 1000) = 5.9 m/s

Quick sizing

Δpst = <5 Pa

LWA = 55 dB(A)

JZ-S, JZ-S-A2, differential pressure and sound power level

v Damper blade position α
v OPEN 20° 40° 60° 80°
v Δpst LWA Δpst LWA Δpst LWA Δpst LWA Δpst LWA
m/s Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A)

0.5

<5

<30

<5

<30

<5

<30

22

44

255

67

1

<5

<30

<5

<30

8

38

85

59

1010

82

2

<5

31

<5

35

28

53

335

74

>2000

>90

4

<5

46

10

50

110

68

1395

89

>2000

>90

6

<5

55

22

59

250

77

>2000

>90

>2000

>90

8

8

61

40

65

440

83

>2000

>90

>2000

>90

10

14

66

60

70

690

88

>2000

>90

>2000

>90


JZ-P, JZ-P-A2, differential pressure and sound power level

v Damper blade position α
v OPEN 20° 40° 60° 80°
v Δpst LWA Δpst LWA Δpst LWA Δpst LWA Δpst LWA
m/s Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A) Pa dB(A)

0.5

<5

<30

 <5

<30 

<5

<30

<5

<30

12

42

1

<5

<30

<5

<30

<5

<30

12

40

45

60

2

<5

<30

<5

30

10

41

45

57

185

77

4

<5

41

6

48

40

58

170

75

750

>90

6

<5

51

14

58

85

69

385

85

1685

>90

8

<5

58

25

65

150

76

685

>90

>2000

>90

10

<5

64

40

71

230

81

1070

>90

>2000

>90


Rectangular multileaf dampers for volume flow and pressure control as well as for shutting off ducts and openings in walls and ceiling slabs.

Ready-to-operate unit which consists of the casing, aerofoil blades and the blade mechanism.

Flanges on both sides, suitable for duct connection.

The blade position is indicated externally by a notch in the blade shaft extension.

Casing air leakage to EN 1751, class C.

Special characteristics

  • Aerofoil blades
  • Low-maintenance, robust construction
  • No parts with silicone
  • Available in standard sizes and many intermediate sizes

Materials and surfaces

  • Casing and blades made of galvanised sheet steel or stainless steel
  • Blade shafts, drive arm and external linkage made of galvanised steel or stainless steel
  • Plastic, brass or stainless steel bearings
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, DB colour

Construction

Duct connection

  • Corner holes on both sides
  • G: Flange holes on both sides


Bearings

  • Plastic bearings, operating temperature –20 – 100 °C
  • M: brass bearings, operating temperature –20 – 150 °C
  • E: stainless steel bearings, operating temperature –20 – 150 °C


Blades

Only for steel or stainless steel multileaf dampers with brass or stainless steel bearings (JZ-...-M, JZ-...-E)

  • V: reinforced blades

Technical data

  • Nominal sizes: 200 × 180 mm – 2000 × 1995 mm
  • Operating temperature: –20 to 100 °C

Sizing data

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

Air-regenerated noise

  • LPA _______________________ [dB(A)]

00225036_0

 Type
JZ       Multileaf damper

Function
S       Opposed (standard)
P       Parallel

 Material
       No entry: galvanised steel
A2       Stainless steel

 Duct connection
       No entry: corner holes on both sides
G       Flange holes on both sides (no corner holes)

 Bearings
       No entry: plastic bearings
M       Brass bearings
E       Stainless steel bearings

 Construction of blades
       Only for steel or stainless steel multileaf dampers with brass or stainless steel bearings
V       reinforced blades

 Operating side
       No entry: on the right
L       Left side

 

 Nominal size [mm]
       B × H
       B > 2000: width subdivided
       H > 1998: height subdivided

 Installation subframe
       No entry: none
ER       With (only for construction G)

 Attachments
       No entry: none
Z04 – Z07 Quadrant stay
Z12 – Z51 Actuators
ZF01 – ZF15 Spring return actuators
Z60 – Z77 Pneumatic actuators
       Explosion-proof actuators
Z1EX, Z3EX Electric
Z60EX – Z77EX Pneumatic

 Damper blade safety function
       Only for spring return actuators and pneumatic actuators
NO       Pressure off/power off to OPEN
NC       Pressure off/power off to CLOSE

 Surface
       No entry: standard construction
P1       Powder-coated, specify RAL CLASSIC colour
PS       Powder-coated, specify DB colour

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

Order example: JZ–S–G–M–V–L/800×510/ER/Z43

Function

Opposed

Material

Galvanised steel

Duct connection

Flange holes on both sides

Bearings

Brass bearings

Construction of blades

Reinforced blades

Operating side

Left side

Nominal size

800 × 510 mm

Installation subframe

With

Attachments

Actuator, 10 Nm, 230 V AC, 3-point

Surface

Standard construction


 

Variants, Attachments, Dimensions and weight, Product details

  • Variants
  • Attachments
  • Dimensions and weight
  • Product details

JZ-S

Variant

  • Multileaf damper with opposed blade action, made of galvanised sheet steel

Materials and surfaces

  • Casing and blades made of galvanised sheet steel
  • Blade shafts, drive arm and external linkage made of galvanised steel
  • Plain bearings made of plastic
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, DB colour

JZ-P

Variant

  • Multileaf damper with parallel blade action, made of galvanised sheet steel

Materials and surfaces

  • Casing and blades made of galvanised sheet steel
  • Blade shafts, drive arm and external linkage made of galvanised steel
  • Plain bearings made of plastic
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, DB colour

JZ-S-A2

Variant

  • Multileaf damper with opposed blade action, made of stainless steel

Materials and surfaces

  • Casing, blades and external linkage made of stainless steel, material no. 1.4301
  • Shafts made of stainless steel, material no. 1.4305
  • Surface: pickled and passivated
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, DB colour

JZ-P-A2

Variant

  • Multileaf damper with parallel blade action, made of stainless steel

Materials and surfaces

  • Casing, blades and external linkage made of stainless steel, material no. 1.4301
  • Shafts made of stainless steel, material no. 1.4305
  • Surface: pickled and passivated
  • P1: Powder-coated, RAL CLASSIC colour
  • PS: Powder-coated, DB colour

Materials

Order code detail Part Material

Casing

Galvanised sheet steel

Blades

Galvanised sheet steel

Shafts

Galvanised steel

Drive arm

Galvanised steel

Linkage

Galvanised steel

Bearings

Plastic

A2

Casing

Stainless steel, material no. 1.4301

A2

Blades

Stainless steel, material no. 1.4301

A2

Shafts

Stainless steel, material no. 1.4305

A2

Linkage

Stainless steel, material no. 1.4301

E

Bearings

Stainless steel

M

Bearings

Brass


Surfaces

Order code detail Part Surface

Casing

Untreated

P1-RAL ...

Blades

Powder-coated, RAL ... CLASSIC

PS-DB ...

Blades

Powder-coated, DB ...


Quadrant stays and limit switches

Order code detail Meaning Limit switch Function

Z04

Quadrant stay


Z05

Quadrant stay

1

Damper blade position CLOSED

Z06

Quadrant stay

1

Damper blade position OPEN

Z07

Quadrant stay

2

Damper blade positions CLOSED nad OPEN


Open/Close actuators

Order code detail Meaning Function Supply voltage Torque Auxiliary switch

Z12

SM230A

–1-wire-control –2-wire-control (3-point)

100 – 240 V AC

20 Nm

Z13

GM230A

–1-wire-control –2-wire-control (Open/Close)

100 – 240 V AC

40 Nm

Z14

SM24A

–1-wire-control –2-wire-control (3-point)

24 V AC/DC

20 Nm

Z15

GM24A

–1-wire-control –2-wire-control (Open/Close)

24 V AC/DC

40 Nm

Z16

SM230A

–1-wire-control –2-wire-control (3-point)

100 – 240 V AC

20 Nm

S2A

Z17

GM230A

–1-wire-control –2-wire-control (3-point)

100 – 240 V AC

40 Nm

S2A

Z18

SM24A

–1-wire-control –2-wire-control (3-point)

24 V AC/DC

20 Nm

S2A

Z19

GM24A

–1-wire-control –2-wire-control (3-point)

24 V AC/DC

40 Nm

S2A

Z43

NM230A

–1-wire-control –2-wire-control (3-point)

100 – 240 V AC

10 Nm

Z45

NM24A

–1-wire-control –2-wire-control (3-point)

24 V AC/DC

10 Nm

Z47

NM230A

–1-wire-control –2-wire-control (3-point)

100 – 240 V AC

10 Nm

S2A

Z49

NM24A

–1-wire-control –2-wire-control (3-point)

24 V AC/DC

10 Nm

S2A


Open/Close actuators, fast-running

Order code detail Meaning Function Supply voltage Torque Auxiliary switch

ZS21

SMQ24A

–1-wire-control

24 V AC/DC

16 Nm

ZS22

SMQ24A

–1-wire-control

24 V AC/DC

16 Nm

S2A


Open/Close actuators, spring return

Order code detail Meaning Function Supply voltage Torque Auxiliary switch

ZF01

NF24A

Supply voltage on/off

24 V AC/DC

10 Nm

ZF02

NFA

Supply voltage on/off

24 – 240 V AC 24 – 125 V DC

10 Nm

ZF03

NF24A-S2

Supply voltage on/off

24 V AC/DC

10 Nm

integrated

ZF04

NFA-S2

Supply voltage on/off

24 – 240 V AC 24 – 125 V DC

10 Nm

integrated

ZF06

SF24A

Supply voltage on/off

24 V AC/DC

20 Nm

ZF07

SFA

Supply voltage on/off

24 – 240 V AC 24 – 125 V DC

20 Nm

ZF08

SF24A-S2

Supply voltage on/off

24 V AC/DC

20 Nm

integrated

ZF09

SFA-S2

Supply voltage on/off

24 – 240 V AC 24 – 125 V DC

20 Nm

integrated

ZF11

EF24A

Supply voltage on/off

24 V AC/DC

30 Nm

ZF12

EF230A

Supply voltage on/off

100 – 240 V AC

30 Nm

ZF13

EF24A-S2

Supply voltage on/off

24 V AC/DC

30 Nm

integrated

ZF14

EF230A-S2

Supply voltage on/off

100 – 240 V AC

30 Nm

integrated


Modulating actuators

Order code detail Meaning Function Supply voltage Torque Auxiliary switch

Z20

SM24A-SR

2 – 10 V DC

24 V AC/DC

20 Nm

Z21

GM24A-SR

2 – 10 V DC

24 V AC/DC

40 Nm

Z51

NM24A-SR

2 – 10 V DC

24 V AC/DC

10 Nm


Modulating actuators, spring return

Order code detail Meaning Function Supply voltage Torque Auxiliary switch

ZF05

NF24A-SR

2 – 10 V DC

24 V AC/DC

10 Nm

ZF10

SF24A-SR

2 – 10 V DC

24 V AC/DC

20 Nm

ZF15

EF24A-SR

2 – 10 V DC

24 V AC/DC

30 Nm


Double acting pneumatic actuators, including explosion-proof actuators

Order code detail Meaning Damper blade safety function Operating pressure Torque at 6 bar Limit switch Solenoid valve
Meaning Damper blade safety function Operating pressure Torque at 6 bar Limit switch Solenoid valve

Z60

Z60EX

DR030

1.2 – 6 bar

35 Nm

Z61

Z61EX

DR030

Power off to close/open

1.2 – 6 bar

35 Nm

24 V DC

Z62

Z62EX

DR030

Power off to close/open

1.2 – 6 bar

35 Nm

230 V AC

Z63

Z63EX

DR030

1.2 – 6 bar

35 Nm

2


Z64

Z64EX

DR030

Power off to close/open

1.2 – 6 bar

35 Nm

2

24 V DC

Z65

Z65EX

DR030

Power off to close/open

1.2 – 6 bar

35 Nm

2

230 V AC

Z66

Z66EX

DR060

1.2 – 6 bar

70 Nm


Z67

Z67EX

DR060

Power off to close/open

1.2 – 6 bar

70 Nm

24 V DC

Z68

Z68EX

DR060

Power off to close/open

1.2 – 6 bar

70 Nm

230 V AC

Z69

Z69EX

DR060

1.2 – 6 bar

70 Nm

2


Z70

Z70EX

DR060

Power off to close/open

1.2 – 6 bar

70 Nm

2

24 V DC

Z71

Z71EX

DR060

Power off to close/open

1.2 – 6 bar

70 Nm

2

230 V AC

① Standard

② Explosion-proof (only with brass or stainless steel bearings)

Z60 – Z65, Z60EX – Z65EX: At 1.2 bar operating pressure only up to height H < 1665 mm


Single acting pneumatic actuators, including explosion-proof actuators

Order code detail Meaning Damper blade safety function Operating pressure Torque at 6 bar Limit switch Solenoid valve
Meaning Damper blade safety function Operating pressure Torque at 6 bar Limit switch Solenoid valve

Z72

Z72EX

SC060 SO060

Pressure off to close/open

6 bar

30 Nm



Z73

Z73EX

SC060 SO060

Power off and pressure off to close/open

6 bar

30 Nm


24 V DC

Z74

Z74EX

SC060 SO060

Power off and pressure off to close/open

6 bar

30 Nm


230 V AC

Z75

Z75EX

SC060 SO060

Pressure off to close/open

6 bar

30 Nm

2


Z76

Z76EX

SC060 SO060

Power off and pressure off to close/open

6 bar

30 Nm

2

24 V DC

Z77

Z77EX

SC060 SO060

Power off and pressure off to close/open

6 bar

30 Nm

2

230 V AC

① Standard

② Explosion-proof (only with brass or stainless steel bearings)


Explosion-proof Open/Close actuators, spring return actuators

Order code detail Meaning Function Supply voltage Torque Auxiliary switch

Z1EX

ExMax15-SF

2-wire-control (3-point)

24 – 240 V AC/DC

15 Nm

integrated

Z3EX

ExMax30-SF

2-wire-control (3-point)

24 – 240 V AC/DC

30 Nm

integrated

Only with brass or stainless steel bearings


JZ, JZ-HL, standard sizes

H No. of blades Position of drive shaft
H No. of blades X Blade
mm mm

180

1

90

1

345

2

90

1

510

3

90

1

675

4

255

2

840

5

420

3

1005

6

420

3

1170

7

585

4

1335

8

585

4

1500

9

750

5

1665

10

750

5

1830

11

915

6

1995

12

915

6


JZ, JZ-HL, intermediate sizes

H No. of blades Position of drive shaft Y
H No. of blades X Blade Y
mm mm mm

183 – 343

1

90

1

1.5 – 81.5

348 – 508

2

90

1

1.5 – 81.5

513 – 673

3

90

1

1.5 – 81.5

678 – 838

4

255

2

1.5 – 81.5

843 – 1003

5

420

3

1.5 – 81.5

1008 – 1168

6

420

3

1.5 – 81.5

1173 – 1333

7

585

4

1.5 – 81.5

1338 – 1498

8

585

4

1.5 – 81.5

1503 – 1663

9

750

5

1.5 – 81.5

1668 – 1828

10

750

5

1.5 – 81.5

1833 – 1993

11

915

6

1.5 – 81.5

1998

12

915

6

1.5


JZ, JZ-LL, JZ-HL, weight

H B [mm]
H 200 400 600 800 1000 1200 1400 1600 1800 2000
mm kg

180

4

6

8

9

11

13

14

16

18

19

345

6

8

10

12

15

17

19

21

24

26

510

7

10

13

16

19

22

25

27

30

33

675

10

13

16

20

23

27

30

33

37

40

840

11

15

19

23

28

32

37

41

46

50

1005

11

17

22

27

32

38

43

48

53

59

1170

13

19

25

31

37

43

49

55

61

67

1335

15

22

28

35

41

48

55

61

68

74

1500

16

23

30

37

44

51

59

66

73

80

1665

17

25

33

41

49

57

65

72

80

88

1830

18

27

35

44

52

61

69

78

86

95

1995

19

29

38

47

56

66

75

84

94

103


  • Constructions with flange holes (-G) do not have corner holes
  • Flange holes on casing sizes from width 288 mm and height 212 mm
  • Drive shafts (special accessory) upon request

Steel or stainless steel multileaf dampers, width, no. of flange holes per side

B No. of holes
B n
mm

200 – 287

1

288 – 537

2

538 – 787

3

788 – 1037

4

1038 – 1287

5

1288 – 1537

6

1538 – 1787

7

1788 – 2000

8


Steel or stainless steel multileaf dampers, height, no. of flange holes per side

H No. of holes
H n
mm

180 – 211

1

212 – 461

2

462 – 711

3

712 – 961

4

962 – 1211

5

1212 – 1461

6

1462 – 1711

7

1712 – 1961

8

1962 – 1995

9


Shaft end projection

Drive shaft Multileaf damper
Drive shaft JZ-S JZ-P JZ-S-A2 JZ-P-A2
Drive shaft A
Drive shaft mm

① Standard

32.5

32.5

32.5

32.5

② extended

255

255

190

190

③ Square 9 mm

38

38

45

45

④ Square 10 mm

60

60


Installation details, Basic information and nomenclature

  • Installation details
  • Basic information and nomenclature

Installation and commissioning

  • Only with horizontal blades
  • With or without installation subframe
  • Torsion-free installation
  • For widths exceeding 2000 mm or heights exceeding 1995 mm install two multileaf dampers side by side or one above the other
  • Only for installation in internal spaces

Width subdivided, width

B1 B
mm mm

2550

1200

2950

1400

3350

1600

3750

1800

4150

2000


Height subdivided, height

H1 H
mm mm

2086

1005

2416

1170

2746

1335

3076

1500

3406

1665

3736

1830

4066

1995


Principal dimensions

B [mm]

Duct width

H [mm]

Duct height

n [ ]

Number of flange screw holes

M [kg]

Weight

Nomenclature

LWA [dB(A)]

A-weighted sound power level of air-regenerated noise for the multileaf damper

α [°]

Damper blade position, 0°: OPEN, 90°: CLOSED

A [m²]

Upstream cross section

v [m/s]

Airflow velocity based on the upstream cross section (B × H)

V [m³/h] and [l/s]

Volume flow rate

Δpst [Pa]

Static differential pressure

Δpst max [Pa]

Maximum static differential pressure


All sound power levels are based on 1 pW.

References

Hotel Schani

  • Beschreibung
Project: Hotel Schani
Market segment: Hotels
Location: Vienna, Austria
Building type: new building
Year of completion: 04.2015
 
Construction company: Mag. Benedikt Komarek
Architect: archisphere – gabriel kacerovsky zt gmbh
Designer: BACHER REINHOLD Dipl.-Ing.
 
Total air volume: 21.000 m³/h
 
TROX-Products
  • Air diffusers: HESCO grilles, LDD
  • Air-water systems: DID-E
  • Fire and Smoke Protection: FK-EU, FKRS-EU
 

Kaiser Franz Josef hospital

  • Information about the Building
Project: Kaiser Franz Josef hospital, Vienna
Application: Hospitals
Location: Vienna, Austria
Building type: new building
Year of completion: 03.2016
 
 
 


Construction company:
 Arbeitsgemeinschaft Projektmanagement SZX Teilneubau KFJ VSG-VKMB
Architect: Nickl & Partner
Designer: FEG Freudensprung
 
Total air volume: 181.000 m³/h
 



TROX-Products
  • Air diffusers: VSD, VDW, SL, HESCO LDD
  • Control units: TVR, TVJ
  • Sound attenuators: MKA, MSA, XKA, CF, CS
  • Fire and Smoke Protection: FK-EU, FKRS-EU
  • External louvres: JZ
 

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