| 摘要 |
PROBLEM TO BE SOLVED: To provide a single storage water heater body multi-channel type hot water supply bath furnace in which a bath can be filled with hot water in a short time by sustaining the temperature of injecting hot water at a set level on the bathtub side even when both hot water injection and hot water supply are used simultaneously. SOLUTION: In a hot water injecting passage where hot water supplied from a hot water supply channel 20 through a hot water injection pipe 50 to the extra firing circulation channel side flows into a bathtub 200 while being divided into two, a solenoid valve 44 is provided in a passage on the side passing through a heat exchanger 13 again. A water supply pipe 22 is coupled with the extra firing circulation channel through a water supply mixing channel 60 which is provided, in the way thereof, with a mixing water quantity control valve 61. A hot water injection passage switching control means 112 opens the solenoid valve 44 to perform reheating through the heat exchanger 13 when the set temperature on the hot water supply side is lower than that on the bathtub side otherwise closes the solenoid valve 44 to block reheating. When the set temperature on the hot water supply side is higher than that on the bathtub side, a mixing water quantity control means 114 controls the mixing quantity of supply water to match the set temperatures through the mixing water quantity control valve 61.
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