WG-JZ

Combination of external weather louvre and multileaf damper, variant WG-AL-JZ-S

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
Technical data measured in aerodynamic and acoustic laboratories
Aerofoil parallel or opposed hollow blades
Multileaf dampers with casing air leakage in accordance with EN 1751, class C
Available in standard sizes and intermediate sizes (in increments of 1 mm)
Pre-assembled combination, therefore quick and easy to install

Optional equipment and accessories

Installation subframe
Insect screen
External weather louvre, powder-coated or anodised surface
Actuators: open/close actuators, variable actuators

General information

Application

Combinations of external weather louvre from type WG with multileaf dampers of type JZ
For outdoor air and exhaust air openings of ventilation systems
Protection against the direct ingress of rain as well as against leaves and birds
Recommended upstream velocity for outdoor air openings max. 2 – 2.5 m/s
As a control element in the volume flow rate and pressure control
For shutting off air ducts and openings in walls
Parallel action blades are preferably used for opening/closing
Opposed action blades are preferably used for variable operation due to their characteristics

Special characteristics

Any intermediate sizes within the standard sizes are available
Less installation effort required on site as only one component needs to be installed
Non-detachable connection between external weather louvre and multileaf damper
Aerofoil parallel or opposed hollow blades
Operating temperature -20 °C to 100 °C
Low-maintenance, robust construction
Low pressure loss and low air-generated noise due to aerofoil blades

Nominal sizes

B: 200 - 2000 mm in mm increments (for powder coating P1 maximum 1995 mm × 1920 mm or 1920 mm × 1995 mm)
H: 180, 345, 510, 675, 840, 1005, 1170, 1335, 1500, 1665, 1830, 1995 mm (intermediate dimensions 183 - 1998 in increments of 1 mm, except standard dimension H - 1 mm, H + 1 mm, H + 2 mm, compensation at the lower blade)
Any combination of B × H possible
For variant with accessories, see Position for attachment

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

Crimped wire mesh
No entry: Galvanised steel
1: with additional insect screen, galvanised steel (only WGJZ)
2: stainless steel (only WG-AL-JZ)
3: with additional insect screen, stainless steel (only WG-ALJZ)
Front border
With fixing holes
U: without fixing holes

Parts and characteristics

Front border
Regular blades and bottom blade
Crimped wire mesh
Insect screen (optional)
Visible mullion or stabilising mullion at the rear side (from B = 1281 mm)
Blades with lever linkage
Drive lever

Attachments

Quadrant stays and limit switches (from H = 345 mm): quadrant stays to adjust the damper blades (stepless setting) and for capturing the end positions

Actuators

Open-close actuators: for opening and closing multileaf dampers
Modulating actuators for variable damper blade positions
Pneumatic actuators for opening and closing multileaf dampers

Accessories

Installation subframe for quick and easy installation

Construction features

External weather louvres
Crimped 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
Front border with fixing holes, for holes see product sheet WG, optionally without holes

Multileaf damper

Rectangular casing, welded, material thickness 1.25 mm
Blades, material thickness 1 mm
Casing with flange
External lever linkage, robust and durable, consisting of the coupling rod and clamping levers
Damper blade shafts, Ø12 mm, with a notch for marking the damper blade position

Material and surfaces

External weather louvres

Front border, mullion and blades made of formed galvanised sheet steel or aluminium
Crimped wire mesh made of galvanised steel or stainless steel
P1: powder-coated, RAL CLASSIC colour

Only for WG-AL

S2: anodised, colour EURAS standard (E6-C-31 - E6-C-35)
S3: anodised, colour EURAS standard E6-C-0

Multileaf damper

Casing and blades made of galvanised sheet steel
Blade shafts, drive arm and lever linkage made of galvanised
Bearing bushes made of plastic (PBT)

Maintenance

Low maintenance as construction and materials are not subject to wear and tear
Contamination should be removed as it may lead to corrosion and to increased air leakage while the multifleaf damper is closed

Technical information

Schematic illustration of WG-JZ

① JZ casing
② JZ blade
③ JZ linkage
④ Wire mesh; additional insect screen as an option
⑤ WG border
⑥ WG bottom blade
⑦ WG regular blades

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.

Nominal sizes	200 × 180 to 2000 × 1995 mm
Operating temperature	-20 °C to 100 °C
Maximum permissible differential pressure	1000 to 2500 Pa (depending on size)

For the WG-JZ combination, the technical data of the external weather louvre can be used. Thereby, a fully opened multileaf damper is assumed. This does explicitly not apply to different damper blade positions. You can find the Easy Product Finder for sizing on our website: www.trox.de/mytrox/auslegungsprogramm-easy-poduct-finder-182e16348fac3d33

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 outdoor air and exhaust air openings. Rectangular multileaf damper for volume flow and pressure control as well as for shutting off air ducts and openings in walls and ceilings. Ready-to-install component which consists of a front frame, aerofoil rain defence blades, and a crimped wire mesh grille 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. Suitable for mounting air duct profiles. The blade position is indicated externally by a notch in the blade shaft extension. Casing air leakage according to EN 1751, class C.

Special characteristics

Any intermediate sizes within the standard sizes are available
Less installation effort required on site as only one
component needs to be installed
Non-detachable connection between external weather louvre and multileaf damper
Aerofoil parallel or opposed hollow blades
Operating temperature -20 °C to 100 °C
Low-maintenance, robust construction
Low pressure loss and low air-generated noise due to aerofoil blades

Material and surfaces

External weather louvres
Front border, mullion and blades made of formed galvanised sheet steel or aluminium
Crimped wire mesh made of galvanised steel or stainless steel
P1: powder-coated, RAL CLASSIC colour

Only for WG-AL

S2: anodised, colour EURAS standard (E6-C-31 - E6-C-35)
S3: anodised, colour EURAS standard E6-C-0

Multileaf damper

Casing and blades made of galvanised sheet steel
Blade shafts, drive arm and lever linkage made of galvanised steel
Bearing bushes made of plastic (PBT)

Construction

Crimped wire mesh

No entry: Galvanised steel
1: with additional insect screen, galvanised steel (only WGJZ)
2: stainless steel (only WG-AL-JZ)
3: with additional insect screen, stainless steel (only WG-ALJZ)
Front border
With fixing holes
U: without fixing holes

Technical data

Nominal sizes: 200 × 180 - 2000 × 1995 mm (with powder coating P1 maximum 1995 mm × 1920 mm)
Total differential pressure exhaust air: 30 Pa at 2.5 m/s
Total differential pressure – outdoor air: 35 Pa at 2.5 m/s
Operating temperature: -20 °C to 100 °C

Sizing data

qv [m3/h]
Δpt [Pa]

Air-regenerated noise

LWA [dB(A)]

–

1600 × 1995

Z12

P1 - RAL 7001

1 Type
WG-JZ Combination of external weather louvre and multileaf damper

2 Material – WG No entry: galvanised sheet steel

AL Aluminium

3 Construction – WG

No entry: crimped wire mesh, galvanised steel
1 Crimped wire mesh and insect screen, stainless steel
2 Crimped wire mesh, stainless steel (with material AL only)
3 Crimped wire mesh and insect screen, stainless steel (material AL only)

4 WG border
No entry: with fixing holes
U without holes

5 Function – JZ
S Opposed (standard)
P Parallel

6 Operating side – JZ
No entry: right
L left

7 Nominal size [mm]
Specify size width × height

8 Installation subframe – WG
No entry: without installation subframe
ER With installation subframe (not with border U)

9 Attachments – JZ
No entry: without attachments
Z04 – Z07 Quadrant stay (from height 345)
Z12 – Z51 Actuators
ZF01 – ZF15 Spring return actuators
Z60 – Z77 Pneumatic actuators

10 Damper blade safety function – JZ
Only with spring return actuator or pneumatic actuator
NO pressure off/power off to OPEN (Normally Open)
NC pressure off/power off to CLOSE (Normally Closed)

11 Surface – WG
No entry: standard construction
P1 powder-coated, specify RAL CLASSIC colour
Material AL only
S2 Anodised to EURAS standard, specify colour (E6-C-31 – E6- C-35)
S3 anodised, E6-C-0 (no colour)
Gloss level
RAL 9010 GU 50
RAL 9006 GU 30
All other RAL colours GU 70

Order example: WG-AL-2-JZ-S-L/1600×1995/ER/Z12/NC/P1-RAL7001

Type

	WG-JZ - Combination of external weather louvre and multileaf damper
Material WG	Aluminium
Construction WG	with crimped wire mesh, stainless steel
Front border WG	with fixing holes
Function JZ	Opposed (standard)
Operating side JZ	left
Nominal size [mm]	Width 1600, height 1995
Installation subframe WG	with installation subframe
Attachments JZ	Actuator SM230A
Damper blade position safety function JZ	pressure off/power off to CLOSED (Normally Closed)
Surface WG	powder-coated, RAL 7001 (silver grey)

Downloads

product information

Product data sheet Type WG-JZ

WG-JZ_PD_2024_12_09_DE_en Product data sheet 1,4 MB pdf

certificates

Declaration of incorporation Type WG-JZ

Declaration of incorporation 94 KB pdf

operation manuals

Installation manual Type WG-JZ

IM_2020_01_A00000049740_JZ-x_WG-JZ_V4_GB_en Installation manual 3 MB pdf

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WG-JZ

COMBINATION WITH A MULTILEAF DAMPER

General information

Technical information

Downloads

product information

Product data sheet Type WG-JZ

certificates

Declaration of incorporation Type WG-JZ

operation manuals

Installation manual Type WG-JZ

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