SET WATER QUANTITY ALARM SYSTEM, AND HOT WATER SUPPLY DEVICE HAVING THE SAME

PROBLEM TO BE SOLVED: To improve alarm precision to inform completion of supply of hot water to a hot water storage part 9 such as a bath tub. SOLUTION: A set water quantity alarm system is for informing a user of reach of supply hot water quantity to the hot water storage part 9 such as a bath tub to a specified set value. It is provided with a flow sensor 12 provided on a hot water supplier 2 to supply hot water to the hot water storage part 9, and an alarm system 15 to give an alarm to the user. An electronic control part 14 determines whether or not there is fluctuation of flow to the hot water storage part 9 which occurs in accordance with opening/closing of faucets 4 other than the one for the hot water storage part 9 connected to the hot water supplier 2, computes integrated flow to the hot water storage part 9 depending on whether or not there is fluctuation of flow from the detected value of a flow sensor 12, and actuates the alarm 15 when the integrated flow reaches a set value Q0. COPYRIGHT: (C)2009,JPO&INPIT