| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a heat source machine capable of accurately detecting a bathtub water level.SOLUTION: A heat source machine can supply hot water to a bathtub 20, and includes a burner 2, an air blower 3, a housing 1, a pressure sensor 11 and a control unit 12. The air blower 3 supplies combustion air to the burner 2. The housing 1 can house the burner 2 and the air blower 3. The pressure sensor 11 can detect differential pressure between the air pressure in the housing 1 and pressure of hot water in the bathtub 20. The control unit 12 corrects differential pressure detected by the pressure sensor 11 on the basis of fluctuation of the air pressure in the housing 1 with change of the rotational frequency of the air blower 3.</p> |
