Patent ID: 8851021
Filing Date: 2014-10-07
Classification: F24D

Abstract:
1. A method for controlling a temperature of hot water through operation of a circulation pump, comprising an inflow pipe through which direct water enters, an outflow pipe through which heated hot water flows out, and a bypass pipe connecting the inflow pipe and the outflow pipe, wherein some of the hot water in the outflow pipe flows into the inflow pipe according to the operation of the circulation pump, comprising of judging whether a user uses the hot water; judging whether one of circulation pump operating modes is selected; wherein if STOP after operating the circulation pump mode is selected when the user uses the hot water, judging whether a flow of used hot water is equal to or larger than a predetermined value; and operating the circulation pump if the flow of the used hot water is equal to or lower than the predetermined value, and turning to OFF for the circulation pump if the flow of the used hot water is equal to or larger than the predetermined value.