BNB Series - Plenum Fans - Backward Wheels

The BNB series is a backward curved plenum fan. The full range of BNB series is AMCA certified to Air, Sound and FEG. Plenum fans are designed for air handling application where the fan wheel operates without a housing. It operates inside a plenum. This results in saving of space normally occupied by the fan housing, transition and diffusers. The fan wheel pressurizes the entire plenum in which the fan is installed. The allows air ducts to be directly connected from any direction of the plenum. The compact size of the plenum fan makes it an excellent selection for retrofit and replacement application and for variable air volume systems. There are three types of the BNB series, i.e. BNB-R (regular type), BNB-P (high pressure type), and BNB-Q (high volume ratio type). The operating limit of BNC series is set according to the requirement of Class 1, 11 and 111 limit as defined in AMCA standard 99-16. The BNC series is available in Direct Driven and Belt Driven.

Specifications Quick Facts • Available backward curved wheel • Size from 315 to 1400mm • Capacities to 170,000 m3/h • Static pressure up to 2600 Pa • Suitable to use for AHU and clean room Application For supply or exhaust application in commercial, institutions and industrial HVAC systems. Testing • Both air and sound performance ratings are test in accordance to AMCA210 and AMCA300 Standards. • All wheels are statically and dynamically balanced to ISO1940 and AMCA204/3 - G2.5 Standards. Accessories Inlet Guard This may be required in some industrial and safety regulations. These are available upon request. Construction Wheel The wheel of BNC series have backward curved blades manufactured in mild steel with polyester powder coating finish. Shaft Shafts are manufactured from C45 carbon steel. All dimensional tolerances of the shaft are fully checked to ensure precision fit. All shafts are coated with an anti-corrosion varnish after assembly. Bearings Bearings used are either deep groove ball bearing type with an adaptor sleeve or spherical roller bearings type sealed at both sides for different duty application. Balancing Quality • All wheels are statically and dynamically balanced to ISO 1940 and AMCA 204-G2.5 standard. • All fans after assembly are trim balanced to ISO 1940 and AMCA 204-G2.5 standard. • Standard lower than G2.5 is available upon request.