Can several toilet exhaust fans and restaurant box exhaust fans be connected in series with a main exhaust pipe? What should I pay attention to?
You can do it. But the pressure of ordinary ventilator is not enough to discharge it so far. You'd better install a pipeline fan on the main pipeline, and the air volume is the total flow. Pressure is the total loss of the air duct, you can calculate it. This means that the pressure loss in the main pipeline is compensated by the pipeline fan, and your ventilator will have a good exhaust effect.