| 摘要 |
PURPOSE:To prevent flactuation of the total amount of hot water supply despite flactuation in the amount of water supply, by terminating water supply when calculated value of supply water flow signal reaches a certain amount in a water heater that sets the temperature of water by regulating water supply. CONSTITUTION:In a water boiler 7 that burns fuel F while water W is supplied, the supply water W is detected by a flow amount sensor 1 and counted by a counter 2. The counted signal is compared with a preset value A by a comparator 3 and when the counted signal reaches the preset value, the output signal is sent to a controller 6 and a water supply amount controller 5 terminates water supply. When there is no output signal from the comparator 3, the controller 6 supplies the predetermined amount by the water supply controller 5, based on the supply water temperature signal from the supply water temperature sensor 4. |
