| 摘要 |
PURPOSE:To stabilize the combustion of a burner when a blower operation is converted to commercial operation or to inverter operation. CONSTITUTION:When a burner is in operation and the electric power supply is switched to an electric power supply from the invertor device 12 or the power line L, a transient time is provided by an adjusting device 11A, and in this transient time the quantity of combustion of the main burner is kept constant, and the degree of opening of the damper 5 is switched by a degree of opening controller (damper controller) 13. |
