AUTOMATIC HOT WATER SUPPLIER PROVIDED WITH FUNCTION OF ADDITIONAL HEATING

PURPOSE:To obtain an additional heating temperature simply, by a method wherein a controller is provided with an additional heating switch while a circulating pump is operated by the manual throwing operation of the same switch to heat up and increase a bathing hot-water temperature. CONSTITUTION:When an additional heating switch 50 is put ON, a circulating pump 18 is driven regardless of whether the set temperature of bathing hot-water, set by the operations of temperature setting switches 52, 53 previously, has been achieved or not whereby high-temperature hot-water, whose heat is exchanged in a heat exchanger 11, is discharged into a bathtub 16 and is circulated through a circulating flow passage B and the temperature of hot-water in the bathtub 16 may be increased to a desired temperature. When the temperature of the bathing hot-water has become a desired additional heating temperature, the additional heating switch is put OFF manually and the additional heating of the bathing hot-water may be finished.