ADA Series - Direct Coupling Double Inlet Centrifugal Fans - Airfoil Wheels

The ADA series is a DIDW centrifugal fan with high efficiency non-overloading airfoil impeller. The fans are suitable for supply or exhaust applications in commercial, process and industrial HVAC systems. Sizes of this series are in accordance with AMCA Standard 99-16. The full ADA series is AMCA certified to Air, Sound and FEG. The ADA series is available in types S, C, T, X and Z. The operating limit of different fan types of the ADA series is set according to the requirement of Class 1, 11 and 111 limit as defined in AMCA Standard 99-16. The airfoil blade induces a smooth airflow across the blade surface, reducing turbulence and noise within the wheel. This results in increased in static efficiency and reduced in overall sound levels. Application range of the airfoil wheel is from approximately 50 to 85% wide open airflow. The airfoil fan surges at a greater percentage of wide open airflow, placing the surge line farther to the right on the fan curve. Static efficiencies as high as 86% can be achieved with airflow fans.

Specifications Quick Facts • Size from 315 to 1400 mm • Capacities to 350,000 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. Accessories 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). Guards Inlet guards, discharge guards and non-drive end shaft guards are available on request. Construction Wheel The wheel of ADA is made of hot rolled sheet steel airfoil 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 1400 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.