Ventilating boxes

APPLICATIONS

These ventilating boxes are designed for low or medium flow rates and can be used wherever dirty air, laden with grease or liquids heated up to 100 °C, must be extracted. Typical uses include canteens and industrial kitchens.

OPERATING CHARACTERISTICS

The operating temperature of the fans must not exceed 100 °C at rated voltage; the direction of rotation is normally left (seen from the inlet), and the conveyors are built into the housing.

PERFORMANCE CURVES, OPERATING AND FUNCTIONAL DIAGRAMS:

For all information on performance curves, flow diagrams and dimensional drawings of the fans, contact our technical sales department. Using a special calculation program, the most suitable extractor for your needs will be selected and you will be sent a customised technical data sheet.

DESIGN DETAILS

The double-skinned protective panel is made of painted galvanised sheet steel, lined inside with condensation-resistant, fire-resistant, sound-insulating rock wool. The fan unit gives exceptionally easy access to all components, for quick, effective cleaning of every part. The motors are Rosenberg external-rotor type with protection IP54.

Quick, simple installation thanks to competent assembly of the components in the housing. No special roof structure is needed, especially on pitched roofs. Air can be discharged on any side by positioning the side panels accordingly. Made with double-skin sound-insulating panels with thermal insulation. Reduced perceived noise because it is installed inside the building. Very little condensation, thanks to the double-chamber aluminium profile. Rotation speed 100% adjustable by changing the voltage or with an inverter on the external-rotor motor.
Special variants to the customer's specification, thanks to in-house motor production. Simple installation of equipment, accessories and controllers. Rosenberg UNOBOX fan units have a cubic frame made of aluminium profiles and double-skin panels covering it. The fan units are backward-curved, with an aluminium impeller fitted to the rotor flange of a Rosenberg external-rotor motor. UNOBOX equipment is designed for handling and conveying medium and low flow rates between 800 m³/h and 10,000 m³/h. Typical fields of application are therefore ventilation of flats, shops, supermarkets, production units, bathrooms, canteens, warehouses and garages – wherever slightly polluted air must be extracted. Because it is installed inside the building, no special structure is needed on the roof and no ventilation openings on the roof itself are taken up. This brings equally clear benefits in noise reduction, especially in mixed urban zones. Compared with a solution using roof fans, the sound pressure level is in fact considerably lower, precisely because of the installation inside the building.

FRAME

Supporting structure of double-chamber aluminium profiles and aluminium angle profiles.
Panels 20 mm thick, with a double layer of galvanised sheet steel, insulated with fire-resistant glass wool that provides sound insulation.
DIRECTION OF ROTATION

The standard direction of fan rotation is right (seen from the inlet side). If it turns the wrong way (for example with a forward-curved blade), there is a serious risk of overloading the motor. The correct direction of rotation must therefore be checked at start-up.

Soundproofed

* with clean outlet

APPLICATIONS

The compact fan box is mainly used for
supplying and extracting air in ventilation, air-conditioning and
extraction systems. It is used where installation space is limited and
low noise is needed.

DESIGN DETAILS

The galvanised sheet-steel box is built as a silencer,
i.e. with perforated sheet and 50 mm mineral-fibre sound insulation inside
. Maintenance and cleaning
can be done thanks to a cover that opens for easy access
to the fans.

Ventilating boxes
DC box

DESCRIPTION

Slim duct fans with backward-curved blades and removable impeller
MAX. conveyed air temperature in degrees Celsius = 60

DESCRIPTION

Wall fans for circular ducts, with or without a square plate.
Maximum conveyed air temperature in degrees Celsius = 70