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Multileaf damper, variant JZ-P-A2

Multileaf damper with actuator

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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

 

Allgemeine Informationen

Application

  • Multileaf dampers as a control element in the volume flow rate and differential pressure control in ventilation and air conditioning systems
  • For shutting off ducts and openings in walls and ceiling slabs
  • Parallel action blades are preferably used for opening/closing
  • Due to their characteristics, opposed action blades are preferable for variable operation
  • 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 – 1995 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 available from width 800 mm


Parts and characteristics

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



Attachments

  • Quadrant stays and limit switches for the infinite adjustment of the multileaf dampers and for capturing the end positions
  • Open/close actuators for opening and closing multileaf dampers
  • Modulating actuators for variable damper blade positions
  • Pneumatic actuators for opening and closing multileaf dampers
  • Explosion-proof actuators for opening and closing multileaf dampers



Accessories

  • Installation subframes for the fast and simple installation of multileaf dampers


Construction features

  • Rectangular casing, welded (P1: casing with screws), material thickness galvanised steel 1.25 mm, stainless steel A2 = 1.2 mm
  • Blades, material thickness 1 mm
  • Flanges on both sides, suitable for duct connections, either corner holes or flange holes
  • External linkage, robust and durable, consisting of the coupling rod and horizontal arms
  • Damper blade shafts, Ø12 mm, with notch to indicate the damper blade position (not for ZS99)
  • With spindle as an attachment: For the position of the spindle, see "Dimensions and weights"
  • With actuator as an attachment: The actuator is always attached to the second blade from the top
  • Construction and the selection of materials comply with the criteria stipulated in EU directives, referred to as ATEX (for use in potentially explosive atmospheres) for variants with brass or stainless steel bearings (-M, -E)



Material and surfaces

  • Casing and blades made of galvanised sheet steel or stainless steel
  • Blade shafts, drive arms and external linkages 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, given that construction and the materials used are not subject to wear
  • Contamination should be removed as it may lead to corrosion and to increased air leakage in closed multileaf dampers


Tehnički podaci

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

  • Function
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE

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 various speeds as the linkage includes a transverse link. This facilitates the closing process and reduces the air leakage in closed multileaf dampers.

 


Variants

  • VARIANTEN


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informacije o proizvodima

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Zahvaljujemo na vašoj poruci!

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Naš odjel za servisne zahtjeve što skorije će vas kontaktirati.
Za opća pitanja u vezi s proizvodima ili uslugama možete i nazvati:
Tel.: +385 1 61 55 401 | Faks: +385 1 61 58 598