Electric pedal dual-use fan, attention should be paid to the horizontal position when installing the fan. The weight of the return air duct 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-toxin ventilation.

New air volume and corresponding pressure loss at that air volume. If clean ventilation and filter-toxin ventilation share a single fan, the calculation should be based on the combined air volume and pressure drop of both.

Choose a fan for energy loss; if the clean ventilation and toxic ventilation are set with separate inlet fans, they should be adjusted according to the clean ventilation fresh air volume and its pressure loss, as well as the toxic ventilation.

Fan with selected air volume and pressure drop.