METHOD FOR PREHEATING HOT-WATER OF A BOILER

摘要

A hot water pre-heating method for a boiler is provided to save energy by preventing hot water from being supplied at the temperature lower than the hot water preset temperature. A hot water pre-heating method for a boiler includes a step(S10) of sensing a hot water off state through a water flow switch when the supply of hot water is stopped; a step(S20) of judging whether the temperature which is set relatively lower than a hot water set temperature is higher than the temperature of hot water measured immediately after passing through a burner of the boiler; and a step of pre-heating water to the set temperature level by operating the burner of the boiler and a circulation pump for a predetermined time if the set temperature is higher than the temperature of hot water.