Trox
Price Available on Request
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 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 NORMAL 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 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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