| 摘要 |
PURPOSE:To enable simplifying of a constitution and improving of a thermal efficiency, by a method wherein, in a titled device having a hot water feeding circuit and a hot water circulating circuit, a heat absorbing pipe of each of said circuits is installed in a common combustion chamber, and a heat exchanger, performing a heat exchange between the two circuit, is mounted. CONSTITUTION:In case each of a hot water feed circuit 2 and a hot water circulating circuit 3 for heating is used, opening and closing valve 16 and 26 are first closed to operate circulating pumps 17 and 27. Then, water or hot water in the two circuits 2 and 3 performs a heat exchange at a heat exchanger 9, and simultaneously, it is heated at heat absorbing pipes 7 and 8 housed in a combustion chamber 6 and is fed to a hot water feed faucet 14 and a radiator 22. In case only the hot water feeding circuit is used and the hot water circulating circuit 3 is not used, the opening and closing valve 26 is opened, the opening and closing valve 16 and an opening and closing valve built into the radiator 22 are closed, and each of the pumps 17 and 27 is operated. This transfers the heat of the hot the pumps 17 and 27 is operated. This transfers the heat of the hot water circulating circuit 3 side to the hot water feeding circuit 2 side through the heat exchanger 9, and prevents hot water in the circuit 3 from rising to an abnormal high temperature. |
