| 摘要 |
PURPOSE:To improve safety and quality, by a method wherein, the titled system for utilizing an exhaust heat from a heater, an exhaust gas passage and a passage for heat exchange are installed to an exhaust cylinder, and the two passages are switched on the exhaust gas inlet side by means of the temperature of hot water. CONSTITUTION:Either passage of exhaust gas from a heater 7 through a passage 11 for heat exchange of a heat exchange unit 8 or passage of that through an exhaust gas passage 9 is switched with the aid of a damper 12. When the exhaust gas passes through the passage 11 for heat exchanger, it heats water with the aid of a heat exchanger 10, and the heat is radiated from a floor heating panel 16 through pipings 14. When the hot water is increased to higher than a set temperature, the damper 12 is shifted to the exhaust gas passage 9 side to stop heating of the water. This constitution permits improvement of safety. |
