| 摘要 |
<p>PROBLEM TO BE SOLVED: To acquire a desired ventilation amount according to an arrangement form even when the arrangement form of a ventilation duct and the like is different.SOLUTION: With respect to a casing 11 of a ventilation unit E in which a ventilation fan is accommodated, an air intake duct and an exhaust duct for configuring a ventilation passage can be connected in a plurality of arrangement forms. In accordance with each of the plurality of the arrangement forms, setting information showing the relationship of rotational speed of a fan motor for driving the ventilation fan and an electrical input value is stored in storage means in advance according to a ventilation amount. Control means determines which arrangement form is selected out of the plurality of arrangement forms, and controls the rotational speed of the fan motor based on the setting information corresponding to the determined arrangement form.</p> |
