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 Drum Louver  A to Z Products
 Introduction
 
To satisfactorily supply a large volume of air into big open spaces such as shopping malls, leisure arenas and gymnasiums, requires a certain type of diffuser. This type of application is where the design features inherent in the Model DRL are best demonstrated.

With adjustable vertical vanes located in a rotational cylinder drum, the diffuser is capable of supplying controlled ventilation over a long throw in both heating and cooling modes. Whist normally used for horizontal distribution, the diffuser may also be used for vertical projection if required.
 
The diffuser is constructed from aluminium extrusions and incorporates a flanged frame for easy installation. A polypropylene bristle is used to seal the cylinder drum inside for outer flange frame. With the diffuser in-situ the cylinder is able to rotate a full 360 degrees, to allow cleaning with or without an OBD fitted.

A complete range of eight standard sizes and four non standard sizes comprises of seven small formats (type’S’) and five large formats (type ‘L’). See page 10 for complete dimension details.

Standard finish is silver (RAL 9006) or white ( RAL 9010) stove enamel. Alternative paint finishes to the relevant RAL colours are available on request.

Opposed blade dampers can be factory fitted and are located to the rear of the cylinder drum. If required a separate for fitting blade damper into the ductwork behind the diffuser assembly.
 
  Motorised Operation
 
To satisfy the demand for remote automatic operation, a motorised version of the Model DRL is also available. The cylinder drum is motorised to alter the air discharge angle for heating or cooling modes. Cylinder travel can be altered to suit on site requirements, by adjustment of the motor. Internal air pattern vanes are manually adjusted to the required position.

A 230 Volt A.C. or 24 Volt D.C. on/off motor can be fitted to a built-in mounting plate assembly incorporated into the standard diffuser.

The built-in motor mounting assembly is suitable for 275 high diffuser sizes only.
 
 
 
 Features
 
19" rack mountable or table top version Front and rear screw less
Single depth extrusions with decorative grooves Optimised usable height for 1u and 2u subracks
Softline with minmum screws    
 
 Construction
 
Aluminium special alloy extrusions and sheets
Screw type construction
Aluminium or CRCA base plate for components
Card racks with GFN guides for PCBS - EURO / VME / CPCI
Legs - plastic
 
 Compliance
 
IEC 297 and DIN41494
IEEE 1101.10 / 11
IEC 297 and DIN41494
IEEE 1101.10 / 11
 Products
 
Aluminium special alloy extrusions and sheets
Screw type construction
Aluminium or CRCA base plate for components
Card racks with GFN guides for PCBS - EURO / VME / CPCI
Aluminium special alloy extrusions and sheets
Screw type construction
Aluminium or CRCA base plate for components
Card racks with GFN guides for PCBS - EURO / VME / CPCI
Legs - plastic
Aluminium special alloy extrusions and sheets
Screw type construction
Aluminium or CRCA base plate for components
Card racks with GFN guides for PCBS - EURO / VME / CPCI
Legs - plastic
Aluminium special alloy extrusions and sheets
Screw type construction
Aluminium or CRCA base plate for components
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