| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable an automatic operation of a hot water feeding device having an auxiliary hot water feeding device connected thereto to be carried out even if a main hot water feeding device having a high minimum type number is used and further enable an optional set temperature to be realized. SOLUTION: This hot water feeding device is operated such that a solar heated hot water temperature Tho is compared with a higher value than a set hot water feeding temperature Ts corresponding to a temperature (a) and when the solar heated hot water temperature Tho is higher than a sum of the set hot water feeding temperature Ts and the temperature (a), the set hot water feeding temperature Ts and a mixed hot discharged water set temperature Tso are set to be equal to each other, combustion at a main hot water feeding device is stopped, a hot water feeding is carried out, and a comparison of the solar heated hot water temperature Tho, the set hot water feeding temperature Ts and the temperature (a) is repeated. In the case that the solar heated hot water temperature Tho is lower than a sum of the set hot water feeding temperature Ts and the temperature (a), the main hot water feeding device is transferred to a combustion control mode, a difference between the set hot water feeding temperature Ts and a mixed hot discharged water set temperature Tso is calculated as a corrected memory temperature Td and stored in a memory.</p> |
