The BDB
series is DIDW centrifugal fans with high efficiency non-overloading backward
curved impellers. The fans are suitable for supply or exhaust applications in
commercial, process and industrial HVAC systems. Sizes of this series is in
accordance with AMCA Standard 99-16.
The operating limit of different fan types of the BDB series is set according to the requirement of Class 1, 11 and 111 limit as defined in AMCA Standard 99-16.
The full
BDB series is AMCA certified to Air, Sound and FEG.
The BDB
series is available in type S, C, T, X or Z.
The
typical selection range of a BC wheel is approximately 40-85% wide open
airflow. The maximum static efficiency is from approximately 65 to 75% and
occurs at approximately 50% of wide-open airflow.
Generally,
BC fan operates at higher speed and used for moving large volumes of air in
high static-pressure applications. Due to this purpose, it is robustly
constructed.
The
advantage of a BC fan is higher efficiency and non-overloading power
curve.
Quick Facts
• Size from 315 to 1400 mm
(Size 1600 to 2000 mm available upon request)
• Capacities to 680,000 m3/h
• Total pressure up to 4500
Pa
• High efficiency and low
noise
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 - G2.5
Standards.
Casing Drain
This option is available
when fans are exposed to the atmosphere or operating in high humidity
condition.
Outlet Flanges
Outlet flanges are available
upon request.
Inspection Doors
The inspection door is
supplied in one of the three positions (P3, P4, P5). Please refer to BDB
product catalogue, page 4 for the exact location.
Guards
Inlet guards, discharge
guards and non-drive end shaft guards are available on request.
Wheel
The wheel of BDB is made of hot rolled sheet steel
backward curved blades with polyester coating finish.
Housing
Except for 1250 and above, the housing is manufactured
in galvanised sheet steel with the housing fixed to the side plates in "pittsburgh
lock" form system.
Housings for 1250 and 2000 are manufactured in mild
steel finished with polyester powder coating finish.
Fully welded steel plate housings with painted finish
are available for all sizes upon request.
Frame
The frame is manufactured with galvanized angular bars
for type "C". For type "T" and "X", it's
manufactured with sections of steel with polyester powder coating finish.
Shaft
Shafts are manufactured from C45 carbon steel. 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 as defined in ADA Product Catalogue page 4.
