DLAA
Air Diffusers Drum Louvers Introduction KMC Drum louvers have adjustable vanes for spread control , mounted in rotatable drum to control vertical deflection. These louvers offer long air pattern projection with a high degree of directional control and supply air to spaces that cannot be served by duct work and conventional outlets due to structural or architectural restrictions.
Application • High capacity supply air outlet with adjustable directional blades for jet or diffused air patterns and vertical directional control • Recommended for HVAC installations which require long or short throw patterns and trajectory control • Ideally suited for accurate directional control of conditioned air within large spaces such as malls, exhibit halls, sports arenas, industrial and manufacturing facilities, atrium areas, and large office building entrances • Supplies straight 0° jet air patterns for extremely long throw requirements and diffused air patterns up to 30° spread for installations which require shorter throws and greater air diffusion patterns • Vertical direction is adjustable from 0° to ±30°
Product Features • Constructed from extruded aluminum profiles. • Drum is constructed from Aluminum sheet and specially shaped extruded aluminum profiles • Cylindrical drum pivoted within a 32mm outer frame • Foam gasket is used on the rear of the frame to avoid air leakage • Opposed blade damper is available in standard aluminum • Deflection louvers or blades of the drum are individually adjustable, rear pivoted, and provide spread control at various angles from 0° to 30°
Options • Available in nominal heights of 150mm, 200mm, 250mm, 300mm 375mm • Powder coated to RAL 9010 as standard
Selection Procedure Selections can be made by means of a straight read-off from the “Performance Data” for the selected model. • Determine the air volume flow rate per outlet. • Establish the required Throw (Refer Notes for Throw Pattern) • Select the diffuser based on required Air flow rate against the limiting pressure drop and sound level requirements.
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Product Selection Check List • Select Unit size based on desired performance characteristics. • Select volume control accessory, if desired. • Select Finish.
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