One can two waterway bath hot water supply vessel

摘要

PROBLEM TO BE SOLVED: To avoid ejection of hot water of high temperature wherein the hot water in a bathtub water reheating heat exchanger heated to a high temperature due to a single operation for hot water supply is ejected into a bathtub by the drive of a circulating pump immediately after the completion of the single operation for hot water supply. ;SOLUTION: When a command to drive a circulating pump 18 is given immediately after a single operation for hot water supply is completed, a combustion fan 25 is driven and cooling of hot water in a bathtub water reheating heat exchanger 14 is facilitated by blowing of the fan, while the drive of the circulating pump 18 is prohibited until both of a hot water temperature detected by a hot water supply heat exchanger thermistor 31 and a hot water temperature detected by a bathtub water reheating heat exchanger thermistor 34 lower below predetermined threshold temperatures respectively. In other words, the problem of ejection of hot water of high temperature is avoided by prohibiting the drive of the circulating pump 18 until the temperature of the hot water in the bathtub water reheating heat exchanger 14 lowers to a temperature causing no possibility of ejection of the hot water of high temperature.;COPYRIGHT: (C)1999,JPO