WG-KUL

Application

• Combinations of Type WG external weather louvres and Type KUL non-return dampers for pecting fresh air and exhaust air openings in air conditioning systems
• Pection 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.
• Prevention of unwanted airflows against the intended airflow direction when the system is not in operation
• Blades close automatically when the system is shut down

Special characteristics

• Any intermediate sizes within the standard size range are available
• Low installation effort on site since external weather louvre and non-return damper are factory combined and assembled
• Operating temperature 20 – 80 °C
• For very large sizes, several combinations can be arranged side by side or on top of each other
• Maximum pressure of 100 Pa
• Low differential pressure due to aerofoil blades
• Non-return dampers are opened and closed by the airflow; no actuator is required

Nominal sizes

• B: 200 – 1600 mm, in increments of 1 mm
• H: 180, 345, 510, 675, 840, 1005, 1170, 1335, 1500, 1665 mm (intermediate sizes 183 – 1664 in increments of 1 mm)
• Any combination of B × H

Variants

• WG-KUL: External weather louvre made of galvanised sheet steel, with non-return damper
• WG-AL-KUL: External weather louvre made of aluminium, with non-return damper
• 1: Fresh air opening
• 2: Exhaust air opening

Constructions

Cover grille

• Crimped wire mesh, galvanised steel
• 1: with insect screen, galvanised steel
• 2: with crimped wire mesh, stainless steel (WG-AL-​KUL only)
• 3: with insect screen and crimped wire mesh, stainless steel (WG-AL-KUL only)

Parts and characteristics

External weather louvres

• Front border
• Regular blades and bottom blade
• Crimped wire mesh
• Insect screen, optional
• Visible mullion, or stabilising mullion at the rear, from B = 1280 mm

Non-return damper

• Casing
• Blades with low-friction bearings
• Blade restrictors
• Blade tip seals
• Bottom travel stop (angle section)
• Centre mullion, visible at the back, from B = 997 mm

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
• Casing of non-return damper
• Blades with low-friction bearings
• Blade restrictors
• Blade tip seals
• Bottom travel stop (angle section)
• Visible mullion at the rear from B = 1000 mm

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

Non-return damper

• Casing, material thickness 1.25 mm
• Blades, material thickness 1 mm
• With unperforated flange for air duct connection
• Side bars with drilled holes to accommodate the blade shafts and integrated blade restrictors
• Blade restrictors prevent the blades from opening beyond a certain angle

Accessories

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

Technical data

• Nominal sizes: 200 × 180 to 1600 × 1665 mm
• Free area: approx. 60 %, with insect screen approx. 45 %
• Total differential pressure – exhaust air: 55 Pa at 2.5 m/s
• Total differential pressure – fresh air: 60 Pa at 2.5 m/s
• Operating temperature: –20 – 80 °C
• Maximum pressure: 100 Pa