The pressure difference available for the system can be worked out subtracting from the exhaust fan's total head the head loss of the arm. If EK type arms are being used, an increase coefficient of 1.5 - 1.8 vs. the EP type curves should be considered, whereas a 1.1 coefficient is to be considered for EG Series arms.
INTERNET USERS ALSO CONSULTED ON THE CATEGORY AIR HANDLING EQUIPMENT ACCESSORIES
See also