These pages illustrate the usual fan arrangements with their proper numbers. When ordering fans, or when requesting data or prices, the required fan arrangement MUST always be indicated. …

The following designation of fan position and direction of rotation are in accordance with EUROVENT. The direction of rotation is determined looking at the fan housing from the motor …

Fan Rotation and Discharge Illustrations per AMCA Standard 99 Clockwise Up Blast (CW UB) Counterclockwise Up Blast (CCW UB) Clockwise Down Blast (CW DB) Counterclockwise …

Arrow designates the direction of airflow. Rotation of fans is determined by viewing from the fan outlet end. Specify either upblast or downblast discharge for vertically-mounted fans. The …

Direction of rotation is determined from the drive side of the fan. On single inlet fans, the drive side is always considered as the side opposite the fan inlet. On double inlet fans with drives on …

2013年1月12日 · The document describes various arrangements and configurations for centrifugal fans, including: - 10 different drive arrangements that specify features like single or …

Specification of the rotation and discharge when ordering a housed centrifugal fan is required so that the fan will fit in your system properly. Have a Question? Let our experts help you. NYB …

Rotation is determined by viewing the impeller from the drive side on centrifugal fans. Determining the rotation is not a factor on axial and inline centrifugal fans. Cubic Feet per Minute, the …

Fan Energy Index (FEI) is a new fan metric comparing the installed fan to a reference fan. Minimum FEI rating of 1.00 requirements are being adopted in building codes. Department of …

Fans and blowers provide air for ventilation and industrial process requirements. They are differentiated by the method used to move the air, and by the system pressure they must …