Electric foot pedal dual fan. When installing the fan, ensure it is in a horizontal position. The weight of the return air duct and valve should not be placed on the housing. Selection of the fan type should

Based on the air volume and pressure loss of the进气系统, determine that when calculating air volume and pressure loss, the fresh air volume during clean ventilation and the filter-toxin ventilation should be calculated separately.

New air volume and corresponding pressure loss at that air volume. If clean ventilation and air purification ventilation share a single fan, the pressure loss should be calculated based on the combined air volume and pressure of both.

Select a fan for power loss; if clean ventilation and filter 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, and the filter ventilation...

Air intake fans with selected air volume and pressure drop.