WGF
June 23, 2022
WG-KUL
June 23, 2022

WG-JZ

COMBINATION WITH A MULTILEAF DAMPER

Combinations of external weather louvres and multileaf dampers as a protection against the direct ingress of rain, leaves and birds, and for shut-off and control

  • Maximum width of 2000 mm, maximum height of 1995 mm
  • Low differential pressure due to aerofoil blades
  • Low air-regenerated noise
  • All aerodynamic data is measured in aerodynamics and acoustics laboratories
  • Aerofoil parallel or opposed hollow blades
  • Casing air leakage to EN 1751, class C
  • Available in standard sizes and many intermediate sizes
  • Pre-assembled combination, hence fast and easy to install

Optional equipment and accessories

  • Installation subframe
  • Insect screen
  • Powder-coated or anodised surface

Actuators: Open/Close actuators, modulating actuators

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Description

Application

Application

  • Combinations of Type WG external weather louvres and Type JZ multileaf dampers for protecting fresh air and exhaust air openings in air conditioning systems
  • Protection against the direct ingress of rain as well as against leaves and birds
  • Recommended face velocity for fresh air openings: 2 – 2.5 m/s max.
  • As an acting element in the volume flow and pressure control
  • For shutting off ducts and openings in walls
  • Parallel action blades are preferably used for opening/closing
  • Opposed action blades are due to their characteristics preferably used for variable operation

Special characteristics

  • Any intermediate sizes within the standard size range are available
  • Low installation effort on site since external weather louvre and multileaf damper are factory combined and assembled
  • Aerofoil parallel or opposed hollow blades
  • Operating temperature –20 – 100 °C
  • For very large sizes, several combinations can be arranged side by side or on top of each other
  • Low-maintenance, robust construction
  • Low differential pressure and low noise due to aerofoil blades

Nominal sizes

  • B: 200 – 2000 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)
  • Any combination of B × H

 

Description

Variants

  • WG-JZ-S: External weather louvre and multileaf damper with opposed blade action, both made of galvanised sheet steel
  • WG-JZ-P: External weather louvre and multileaf damper with parallel blade action, both made of galvanised sheet steel
  • WG-AL-JZ-S: External weather louvre made of aluminium and multileaf damper with opposed blade action made of galvanised sheet steel
  • WG-AL-JZ-P: External weather louvre made of aluminium and multileaf damper with parallel blade action made of galvanised sheet steel

Construction

Cover grille

    • Wire mesh
    • 1: With insect screen, galvanised steel (only WG-JZ)
    • 2: With wire mesh, stainless steel (only WG-AL-JZ)
    • 3: With insect screen and wire mesh, stainless steel (only WG-AL-JZ)

Border

    • Border fixing holes
    • U: Without fixing holes

Parts and characteristics

  • Border
  • Regular blades and bottom blade
  • Wire mesh
  • Optional insect screen
  • Visible mullion or stabilising mullion at the rear, from B = 1385 mm
  • 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

Accessories

  • Installation subframe: Installation subframe for the fast and simple installation of external weather louvres

Construction features

External weather louvre

    • Free area of approx. 60 %, with insect screen approx. 45 %
    • Wire mesh at the rear, mesh aperture 20 × 20 × 1.8 mm
    • Optional insect screen at the rear, mesh aperture 1.25 × 1.25 × 0.4 mm
    • Border fixing holes

Multileaf damper

    • 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, with 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

Materials and surfaces

  • Border, mullion and blades made of formed galvanised sheet steel or aluminium
  • Wire mesh made of galvanised steel or stainless steel
  • Casing and blades of the multileaf damper 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, NCS or DB colour

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

 

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Product Information

 

Certificates

 

Operation manuals