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.
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.
Inlet Guard
This may be required in some
industrial and safety regulations. These are available upon request.
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.
