Electric Pedal/Manual Exhaust Fan - Pay attention to the horizontal position during installation. The weight of the air return pipe and valves should not be placed on the housing. Selection of the fan type should

Based on the air volume and pressure loss of the inlet air system, the calculation of air volume and pressure loss should separately consider the fresh air volume during clean ventilation and the air volume during filter ventilation.

Fresh air volume and the corresponding pressure loss under such air volume. If clean ventilation and filter-dosing ventilation share the same fan, the fan should be sized based on the combined air volume and their pressure losses.

Select a fan for power loss; if clean ventilation and toxic ventilation are separately set with intake fans, the intake fans should be adjusted according to the fresh air volume of clean ventilation and its pressure loss, as well as the toxic ventilation.

Air intake fans selected with specific air volume and pressure drop.