PURPOSE: To enable variation of a set temperature during pouring of hot water by a method wherein control is effected such that when a set temperature is varied, when a newly set temperature exceeds a hot water temperature, high temperature hot water is fed, and when a hot water temperature attains the newly set temperature, the feed of hot water is stopped, and when the newly set temperature is below a hot water temperature, the feed of hot water is stopped.
CONSTITUTION: When a set temperature T1 is varied, a newly set temperature T1 is compared with temperature T2 of hot water in a hot water tank. When the newly set temperature is higher than the temperature T2 of hot water in the hot water tank, the mixing ratio of a mixing valve 8 is controlled so that temperature is adjusted to a value obtained by adding α°C to the newlt set value T1, and hot water is fed, and control is repeatedly executed. When the newly set temperature T1 is below the temperature T2 of water in the hot water tank, control is made to stop the feed of hot water. Namely, even under a state that the arrival temperature of hot water in the hot water tank is set and pouring of hot water is executed, a set temperature is varied and pouring of hot water is practicable so that the temperature of hot water in the hot water tank can be easily adjusted to a newly set value. Then a newly set temperature is below the temperature of hot water in the hot water tank, the feed of hot water is stopped and wasteful pouring of hot water is prevented from occurring.
| JPH0560336 | HOT WATER SUPPLY DEVICE |
| JP3801274 | HOT-WATER SUPPLY APPARATUS |
KAKEYA NOBUKAZU
MINAMI TAKAYUKI
