| 摘要 |
PROBLEM TO BE SOLVED: To provide the freeze proofing method of a heating apparatus for preventing freezing by draining heating medium water at power failure, and to provide an apparatus for freeze proofing. SOLUTION: In the method and apparatus for freeze proofing in a heating apparatus for heating by circulating the heating medium water (6) to hot water terminals (2, 4), the heating medium water in a heating source machine and the circulation path is drained to the outside for realizing automation or the like for freeze proofing, when the power supply of the heat source machine (8) for heating the heating medium water stops feeding power. |
