Noise control in ventilation
Why is it such an issue? In 1999 the WHO (World Health Organisation)…
Type LS20
LS20 is a multi slot diffuser suited to short or long runs and both internal and external mitres, at any angle can be achieved. Due to its construction, straight lines are not a problem and its use as a ceiling support system is well-proved.
Non-active sections can be used for return application and the injected nylon pattern blades can be set for horizontal or vertical throw.
LS2O Sidewall Performance Data
Air Volume per metre m3/s | No. of Slots | ^Ps N/m2 | Throw M | Sound Rating NC |
0.030 | 1 | 7 | 2.4-3.2 | |
0.040 | 1 2 | 10 4 | 3.2-4.2 1.6-2.2 | |
0.050 | 1 2 | 17 5 | 3.9-5.3 1.9-2.7 | |
0.060 | 1 2 | 24 6 | 4.7-6.3 2.4-3.3 | 21 |
0.070 | 1 2 | 32 8 | 5.5-7.3 2.8-3.8 | 27 |
0.080 | 1 2 | 41 11 | 6.2-8.4 3.2-4.3 | 30 |
0.090 | 1 2 3 | 52 14 7 | 6.8-9.4 3.6-4.8 2.7-3.7 | 31 16 |
0.100 | 1 2 3 4 | 64 17 9 5 | 7.7-10.3 3.9-5.4 2.9-4.1 2.5-3.6 | 36 18 |
0.120 | 2 3 4 5 | 25 11 7 4 | 4.7-6.5 3.6-4.9 2.9-4.3 2.4-3.5 | 24 |
0.140 | 2 3 4 5 6 | 33 16 8 6 4 | 5.5-7.5 4.1-5.6 3.5-4.9 2.8-3.8 2.3-3.3 | 30 20 |
0.160 | 2 3 4 5 6 7 | 44 19 12 8 5 3 | 6.3-8.5 4.7-6.3 3.9-5.7 3.2-4.6 2.6-3.8 2.3-3.4 | 33 21 |
0.180 | 2 3 4 5 6 7 8 | 55 24 14 9 7 5 4 | 7.0-9.6 5.3-7.2 4.5-6.5 3.6-5.2 2.9-4.2 2.5-3.8 2.1-3.6 | 34 25 19 |
0.220 | 2 3 4 5 6 7 8 | 81 37 20 14 9 7 4 | 8.6-11.6 6.5-8.7 5.4-7.8 4.3-6.3 3.5-5.1 2.9-4.5 2.6-4.3 | 40 32 25 19 |
0.240 | 3 4 5 6 7 8 | 44 24 16 12 8 7 | 7.0-9.5 5.9-8.6 4.6-6.7 3.9-5.6 3.3-4.9 2.8-4.7 | 35 27 22 17 |
0.260 | 3 4 5 6 7 8 | 51 29 18 12 8 8 | 7.7-10.3 6.4-9.3 5.1-7.4 4.2-6.1 3.5-5.3 2.9-4.8 | 38 30 24 18 |
0.280 | 3 4 5 6 7 8 | 59 34 21 14 12 9 | 8.2-10.9 6.9-9.8 5.4-7.9 4.5-6.5 3.8-5.7 3.2-5.4 | 39 32 26 23 17 16 |
0.300 | 3 4 5 6 7 8 | 69 39 24 16 12 8 | 8.6-11.8 7.4-10.7 5.9-8.5 4.8-6.9 3.9-6.1 3.5-5.7 | 41 34 27 22 20 18 |
Manufactured from HE9TF and HE30 aluminium extrusion and jig assembled to provide accurate tolerances.
From 1 to 10 slots are available for Ceiling and Sidewall Supply Systems. Total run lengths are unrestricted.
Any standard RAL powder coat with black or white blades.
This unit has been successfully incorporated into a bulkhead extrusion which supports both the ceiling and partitioning, and handles air on supply or return. An acoustic crosstalk kit is available to isolate individual offices.
A detail of the unique fixing method has been shown overleaf, alternatively an integral carriage, allowing the units to be mounted first with the boxes being clipped into place can be provided.
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