Lio – Fixed Blades Wall-Mounted Louvres

Lio – Fixed Blades Wall-Mounted Louvres

Features

  • Wide range of applications
  • Ventilation inlet or outlet
  • Duct or plenum installation
  • Protection against rain, leaves and birds
  • Modular units, available in standard size or customized size
  • Weather resistant blades available
  • Maintenance free

As inlet or outlet, the LiO louvre can be duct-installed for a powered ventilation system or plenum-installed for a natural ventilation system. They are designed for either single louvre use in small openings or multiple louvre applications in larger openings. The wide variety of available materials and finishes enables the designer to blend or contrast the louvres with the surrounding materials to achieve the desired architectural effect.

Characteristics of LiO Louvres

  • Depth:100 or 150 mm
  • Blades: standard or weather resistant
  • Unit width: customised (blade stiffeners from1500 mm)
  • Any combination of height and width is possible
  • Flange or flashing to adapt to the building
  • Material: Aluminium, ZincAL or Galvanised
  • Colours: Standard ChromadekĀ©, Standard COLORPLUSĀ©, Standard RAL
  • Bird mesh in option (25 mm x 13 mm x 1.6 mm)

Mass Characteristics

Approximate Mass
Material 1140 1560
Aluminium (1 mm) 6 kg/m2 7 kg/m2
Galvanised (0.8 mm) 15 kg/m2 16 kg/m2
ZincAl (0.75 mm) 14 kg/m2 15 kg/m2

1140 louvre

100 mm depth
Standard blades

1160 louvre

150 mm depth
Standard blades

1540 louvre

100 mm depth
Weather resistant blades

1560 louvre

150 mm depth
Weather resistant blades

Percentage Free Area – 1140 Louvre

Number of Blades Height (mm) Width (mm)
500 1000 1500 2000
1 405 22% 25% 26% 26%
2 520 26% 29% 30% 30%
3 635 28% 32% 33% 33%
4 750 30% 33% 35% 35%
5 865 31% 35% 36% 36%
6 980 32% 36% 37% 38%
7 1095 33% 37% 38% 38%
8 1210 34% 37% 39% 39%
9 1325 34% 38% 39% 40%
10 1440 35% 38% 40% 40%
11 1555 35% 39% 40% 41%
12 1670 35% 39% 40% 41%
13 1785 35% 39% 41% 41%
14 1900 36% 40% 41% 41%

Percentage Free Area – 1160 Louvre

Number of Blades Height (mm) Width (mm)
500 1000 1500 2000
1 563 27% 31% 32% 32%
2 728 32% 36% 37% 38%
3 893 35% 39% 40% 41%
4 1058 36% 41% 42% 43%
5 1223 38% 43% 44% 45%
6 1388 39% 44% 45% 46%
7 1553 40% 45% 46% 47%
8 1718 40% 45% 47% 48%
9 1883 41% 46% 48% 49%
10 2048 41% 47% 48% 49%
11 2213 42% 47% 49% 50%
12 2378 42% 47% 49% 50%
13 2543 42% 48% 49% 50%
14 2708 43% 48% 50% 51%

Percentage Free Area – 1560 Louvre

Number of Blades Height (mm) Width (mm)
500 1000 1500 2000
1 656 21% 23% 24% 25%
2 846 24% 27% 28% 29%
3 1036 26% 30% 31% 31%
4 1226 28% 31% 32% 33%
5 1416 29% 32% 34% 34%
6 1606 30% 33% 35% 35%
7 1796 30% 34% 35% 36%
8 1986 31% 35% 36% 37%
9 2176 31% 35% 37% 37%
10 2366 32% 36% 37% 38%
11 2556 32% 36% 37% 38%
12 2746 32% 36% 38% 38%
13 2936 32% 37% 38% 39%
14 3126 33% 37% 38% 39%

Percentage Free Area – 1540 Louvre

Number of Blades Height (mm) Width (mm)
500 1000 1500 2000
1 499 17% 19% 19% 20%
2 639 20% 22% 23% 23%
3 779 21% 24% 25% 25%
4 919 23% 25% 26% 27%
5 1059 24% 27% 27% 29%
6 1199 24% 27% 28% 29%
7 1339 25% 25% 29% 30%
8 1479 25% 28% 30% 30%
9 1619 26% 29% 30% 31%
10 1759 26% 29% 30% 31%
11 1899 26% 30% 31% 31%
12 2039 27% 30% 31% 31%
13 2179 27% 30% 31% 32%
14 2319 27% 30% 31% 32%

When birdmesh is fitted, the above figures are reduced by 19%

Standard Louvre Heights

Number of Inter-blades Standard Blade 100 mm Depth 1140 Weather Resistant Blade 150 mm Depth 1560
1 405 656
2 520 846
3 635 1036
4 750 1226
5 865 1416
6 980 1606
7 1095 1796
8 1210 1986
9 1325 2176
10 1440 2366
11 1555 2556
12 1670 2746
13 1785 2936
14 1900 3126

Rain Penetration Test – 1140 Louvre

For the following test conditions:

  • Water drop rate: 102 mm/h
  • Test duration: 15 min
    The first drop appears for a front air velocity of 1.7 m/s

Aerodynamic Free Area in m2 – 1140 Louvre

Height (mm) Width (mm)
500 1000 1500
405 0.04 0.08 0.12
520 0.05 0.10 0.16
635 0.06 0.13 0.19
750 0.08 0.15 0.23
865 0.09 0.17 0.26
980 0.10 0.20 0.29
1095 0.11 0.22 0.33
1210 0.12 0.24 0.36
1325 0.13 0.27 0.40
1440 0.14 0.29 0.43
1555 0.16 0.31 0.47
1670 0.17 0.33 0.50
1785 0.18 0.36 0.54
1900 0.19 0.38 0.57

Pressure Losses – 1140 Louvre – Inlet

Louvre mounted on a wall
Density = 1.2 kg/m3

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Content Updated: 09/17