| 摘要 |
PROBLEM TO BE SOLVED: To provide a bath hot water supply system capable of appropriately preventing an increase in the bathtub water level determination error resulting from a change in specific gravity to follow a change in a hot water temperature in a circulation pipeline after completion of filling a bathtub with the hot water, and accurately determining the water level.SOLUTION: Bathtub water level determination means C of a bath hot water supply system S can obtain first data relating to a change in specific gravity of hot water in a circulation pipeline 8 after completion of filling a bathtub 7 with the hot water, and second data relating to a relative installation height of the bathtub 7 to a water heater WH. In a case of determining a water level of the bathtub 7 after completion of filling the bathtub 7 with the hot water, a detected value of a water level sensor Sa or the water level of the bathtub 7 based on the detected value is corrected using a correction value based on the first and second data. |
