| 摘要 |
PURPOSE:To reduce intermittent operation number of times of a burner by flowing out hot water in small variation range at arbitrary set temperature in the case of hot water supply, switching it to predetermined set temperature and further widely switching a temperature regulating range for preparation of a both. CONSTITUTION:A heat exchanger 5 is incorporated in the hot water storage part of a tank body 1 having a feed pipe 2 and a hot water feeding pipe 3. A circulating pump 6 circulates the water of a vessel 7 in a heat exchanger 5. The hot water temperature is detected by a temperature sensor 8 so that the water of the tank body 1 previously becomes boiling-up temperature set by a hot water temperature regulator 13 of operation remote control 10 and the start and stop of combustion of a burner 4 are controlled by a controller 9. When a pump operation switch 12 is turned on, a pump operation control circuit 16 is switched on, when the circulating pump 6 is turned on a hot water feeding temperature correction circuit 17 is switched on, the set temperature of a hot water feeding temperature set circuit 18 is switched to the predetermined input set temperature and further temperature regulating range is widened. |
