METHOD OF CONTROLLING TO PREVENT CHATTERING WHEN SWITCHING TO WARM WATER IN HEATING OF GAS BOILER

摘要

PURPOSE: A method is provided to analyze the output according to the time when switching to heating from heating water, to prevent the chattering by deciding the area of output per every unit time and to decide the heating or heating water stoppage promptly. CONSTITUTION: A gas boiler for both hot water supply and heating has a water flow switch turned off according to the turn-off of a hot water tap after turning on a driving switch. The output according to the time is decided based on the ratio of the unit time to the output area. A three-way valve is switched to a heating portion if a certain output area is wider than the whole output area. Then, the output is sensed continuously if the certain output area is narrower than the whole output area. The answer signals are generated to confirm the switching of the three-way valve. If the response is not confirmed, the mode is an error mode.