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DAL 382 Diffuser - 12 Pages

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Catalogue excerpts

Ceiling diffuser DAL 382 Model Description, area of application and product benefits . . . . . . . . . . . . Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DAL 382 2 Method of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Aerodynamic data and Range of application . . . . . . . . . . . . . . . . . . . . . Sizes and weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DAL 382 5 Diagrams . . . . . . . . . . . . . . . . . . . . . ....

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Ceiling diffuser Description, Areas of application and Benefits Diffuser type DAL 382 is a highly inductive swirl ceiling diffuser with a square front plate and integrated slot profiles with ABS eccentric cylinders (drums) and straightening profiles. It is suitable use in both closed and open ceiling systems. The ability to rotate the eccentric cylinder after installation makes it possible to achieve any desired airstream pattern. DAL 382 allows optimal adaptation of the air distribution system to the prevailing site conditions. The clips, integrated into the front plate, make it possible to adjust...

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Ceiling diffuser Swirl diffuser DAL 382 consists of a square front plate with slot profiles arranged in parallel staggered groups of four. The profiles contain eccentric cylinder of ABS with integrated straighteners. The diffuser is operated with a plenum box. The front plate is fixed with a concealed center screw. Discharge behavior The front plate is characterized by four groups of parallel staggered slot elements. Rotating the individual cylinders allows a multitude of discharge patterns. The four groups of slot elements are set so that the discharge streams overlap and in the process create...

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Ceiling diffuser The 100-mm long eccentric cylinders can be rotated by 360° in their individual bearings. In the standard working range (drum positions between 1A and F6) the air can be continuously redirected by 180° at a constant discharge cross-section and discharge momentum. When turned beyond this range (drum positions 21 to 65), the discharge cross section is decreased step by step. By keeping the specific supply air volume, this increases the supply air velocity and discharge momentum. Together with the slot profils, the drums forces a strong underpressure on their off -center surface,...

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Ceiling diffuser Aerodynamic data and Ranges of application Aerodynamic data Specification : The minimum spacing for heights of 3 m so that velocity in occupied areas does not exceed 0.2 m/s.. Nominal size [-] Minimum spacing Note : The absorption of the room is not considerated. For a comparison with North American values, reduce the value of -10 dB noise. Ranges of application = minimum range of application = ideal range of application = maximum range of application Subject to technical changes. Version 14 / 08 / 201

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Ceiling diffuser DAL 382 Dimensions / Weight Cote DN Plenum - side input Perforated plate throttle (optional) øD Perforated plate throttle (optional) Perforated plate Perforated plate Subject to technical changes. Version 22 / 08 / 2012

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Ceiling diffuser Ceiling stream rating The acoustic power levels and pressure drop given apply for the damper in the plenum adjusted to “open”. When the damper is adjusted to “shut”, the pressure loss increases by a factor of 1.8 and the soundpower level by 4 dB. Air flow distance after conjunction (y[m]) Subject to technical changes. Version 14 / 08 / 201

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Ceiling diffuser Critical air flow distance with cooling - Example Critical air flow distance x crit [m] Critical air flow distance x crit [m] Critical air flow distance x crit [m] Critical air flow distance x crit [m] Temperature Ratio Subject to technical changes. Version 14 / 08 / 201 Specification : Room height: H = 3.00 m Air volume flow per swirl diffuser : . V0 = 600 m3/h Max. cooling temp. difference : ∆T0 = -10°C Diffuser clearance: 2 x 1.7 = 3.4 m Required : 1. Diffuser size 2. Acoustic power level LWA 3. Pressure loss Δpt 4. Maximum air velocity at head level (1.80 m) 5. Maximum temperature...

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Ceiling diffuser 1 - Physical Description and Characteristics 1.1 Square ceiling air diffuser DAL 382 with sets of parallel slot profiles running in different directions, front panel made from galvanneal steel 22 gages, slot profiles with eccentric drums made from ABS (matt black or white), adjustable. 1.2 Eccentric drums of 100 mm long, individually adjustable and can be rotated 360°. 3 - Mounting 3.1 The diffuser is complete with a plenum box from the manufacturer. The plenum made from galvanized steel 24 gages and should include a perforated plate. Plenum supported at each corner and the input...

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Ceiling diffuser 299, 400, 502, 603 S = Swirl flow V = Vertical flow L = Vertical flow, long distance W = White drums and receptacles B = Black drums and receptacles 9003 = White 9010 = Cream ____ = RAL colours * (write the number of colour) S = Plenum with input by side T = Plenum with input on top X = Without plenum X = Without insulation I = With acoustic insulation F = With fireproof insulation and fireproof damper X = Without Damper D = With damper (for gypsum ceiling) Colour of drums and receptacle Plenum Volet Notes : *Write the four (4) digit number of the RAL colour chart Subject to technical...

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NAD Klima 144, Léger St., Sherbrooke (Québec), Canada J1L 1L9 • T : 819 780-0111 • 1 866 531-1739 • F : 819 780-1660 • info@nadklima.com

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