| 摘要 |
PURPOSE:To prevent cold air from blowing off, by operating a blower by making the titled controller constitute so that a contact point of a bimetallic thermostat becomes close by making use of heat of a heater of a thermal valve. CONSTITUTION:When a switch 48 is turned ON at the time of performing heating, a heater 41 is electrified through a thermal valve 27 and a heat exchanger plate 42 is heated. About a minute later, a valve body 34 is pressed downward by a shaft 39, an opening part 35 is opened, an inlet 31 and an outlet 32 are communicated with each other and hot water from a water heater 24 is circulated within a heat exchanger. About two minutes later, thermostats 43, 43a are turned ON and a blower 22 is operated by the heated heat exchanger plate 42. With this construction, a higher blow-off temperature than that available at the beginning of the operation is obtained. When the operation switch 48 is turned OFF at the time of suspension of the heating, along with suspension of a boiler 24 electrification of the heater 41 is suspended, the opening part 35 is closed after about 1min and watering to the heat exchanger 21 is suspended. The thermostats 43, 43a are cooled also and about 2min later the blower 22 is suspended. |
