| 摘要 |
PROBLEM TO BE SOLVED: To provide an air supply and exhaust system enabling alteration of the capacities of an air supply fan and an exhaust fan after installation. SOLUTION: Drive circuits 31 and 32 for driving an air supply fan 24 and an exhaust fan 25 respectively are connected to a control part 3. The drive circuits 31 and 32 are equipped with taps for switching the blowing capacities of the air supply fan 24 and the exhaust fan 25 over to a plurality of stages respectively. Besides, a remote-control receiver 33 is connected to the control part 3 and signals delivered from a remote-control transmitter 34 provided for setting operation modes of this air supply and exhaust system are inputted to the receiver. Based on the signals inputted from the remote-control receiver 33, the control part 3 switches over the taps provided for the drive circuits 31 and 33 and thereby the air supply fan 24 and the exhaust fan 25 are driven in the capacities set by a user. |
