| 摘要 |
PROBLEM TO BE SOLVED: To provide a bath device capable of improving efficiency by effectively utilizing heat held on a heat medium circulation circuit side, in reheating operation in an indirect heating system.SOLUTION: A bath device includes an operation control unit C. When completing reheating operation which operates a heat medium circulation pump P2 to circulate heat medium in a heat medium circulation circuit and operates a bathtub water circulation pump P1 to circulate bathtub water in bathtub water circulation circuits L7, L8, in an operation state of a combustion type heating device H2, thereby to reheat bathtub water, after stopping the combustion type heating device H2, the operation control unit derives an instantaneous recovery heat quantity relevant value to be a recovery heat quantity relevant value per unit time from heat medium to bathtub water in second heat exchangers EX3, EX4, and after the derived instantaneous recovery heat quantity relevant value is less than a recovery heat quantity value lower limit threshold, stops the heat medium circulation pump P2 and the bathtub water circulation pump P1.SELECTED DRAWING: Figure 1 |
