| 摘要 |
PURPOSE:To improve the efficiency of systematic operation of the titled apparatus at the time of low load heating by a method wherein a device the apparatus comprises a instantaneous heat generator and a radiator incorporating a fan therein, the temperature of hot water supplied from the heat generator is automatically controlled in response to the number of revolutions of the fan. CONSTITUTION:When a thermostat 7 of the radiator 6 turns ON, a fan motor 8 is rotated to blow out air and at the same time, signals are transmitted to a proportional valve 4 and a circulation pump 13 on the side of the heat generator 1 so that the circulation pump 13 is started and a burner 2 is ignited to place the hot water heating apparatus in an operation condition. Accordingly, the hot water is supplied to the radiator 6 from a feed circuit (a) and returns to the heat generator 1 through a return circuit (b). When the room temperature reaches a set temperature for the thermostat 7, the fan motor 8 is switched to a low speed rotation and the amount of combustion of the burner 2 is reduced. In this case, the temperature of the hot water is constantly monitored by a temperature detector 12 and at the same time, the radiator 9 is operated in the same manner through the ON-operation of a manual switch 10. |
