Hangzhou, Zhejiang, China, 27 July, 2021: Dunli has launched the B-Max backward-curved centrifugal fan, which the company said is developed for high-end HVAC unit applications. Making the announcement through a Press release, the company added that the impeller, motor and controller of the fan were designed afresh to bring customers a better experience.

Describing the characteristics of the fan, Dunli said it:

• Is a one-piece solution, where the motor, impeller, inlet ring, supporting rack and mounting plate are matched and assembled perfectly into one piece. This feature, it added, enables ease of assembly for the customer.

• Has excellent efficiency, including industry-leading static pressure efficiency, which meets ErP2020 Standard requirements; an aerodynamic efficiency as high as 75% and above; and EC motor efficiency that meets IE4 standard.

• Has an optimised aerodynamic airfoil-shaped blade design through using CFD technology; and industry-leading noise level. These two features, it added, are the outcome of 40+ reliability tests that were performed.

• Has various control functions, including 0-10VDC (15VDC)/PWM signal control; phase-missing, over-current, over-voltage, over-temperature protections and signal control and fault alarm functions; and 485 communication function with MODBUS-RTU interface to monitor working, stop, speed and malfunction of the motor status.

• Has wide range of applications, wherein it can be widely used in AHUs, data centres and precision air conditioning