Type 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
small_tab1_Serie WG-JZ
  • Application
  • Description

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
  • Temperature resistant up to 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
  • Subdivided construction or stainless steel construction upon request

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

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 external weather louvres

Technical information

  • Function
  • Technical data
  • Specification text
  • Order code
  • Related products
wg-jz

Functional description

External weather louvres are externally mounted air transfer devices for the fresh air and exhaust air of air conditioning systems. They are installed in external walls and façades. Their narrowly arranged blades give good protection against the direct ingress of rain as well as against leaves and birds.

Under certain unfavourable conditions, such as heavy rain, and depending on the airflow velocity it might happen that slight quantities of water enter together with the air.

This is why the airflow velocity in fresh air openings should not exceed 2 – 2.5 m/s.


 

Linkage

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.

wg-jz

 

Combinations of an external weather louvre and a multileaf damper.

Rectangular external weather louvre as a protection of air conditioning systems against the direct ingress of rain, leaves and birds into fresh air and exhaust air openings.

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

Ready-to-install component which consists of a border, aerofoil rain defence blades, and a wire mesh at the rear.

Shut-off damper which consists of the casing, aerofoil blades and the blade mechanism.

Suitable for duct pressures up to 1000 Pa.

With flange, 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

  • 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
  • Temperature resistant up to 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
  • Subdivided construction or stainless steel construction upon request

Technical data

  • Nominal sizes: 200 × 180 to 2000 × 1995 mm
  • Volume flow rate range: 40 – 9480 l/s or 144 – 34128 m³/h at 2.5 m/s
  • Free area of approx. 60 % (with insect screen approx. 45 %)
  • Total differential pressure – exhaust air: 30 Pa at 2.5 m/s
  • Total differential pressure – fresh air: 35 Pa at 2.5 m/s
wg-jz

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Contact

Thank you for your message!

Visual contact Visual contact

Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +7 495 221-5161 | Fax: +7 495 221-5171