| 摘要 |
PURPOSE: An expansion tank with a preheating function, and a boiler system using the same are provided to be equipped with a heater inside the expansion tank, thereby supplying heating and warm water rapidly by improving a preheating function. CONSTITUTION: An expansion tank with a preheating function comprises a housing(110), a heater unit(120), and a first pipe(130). The housing accommodates heating water inside, comprises an outer pipe, and is connected to a heating pipe unit to collect the heating water(400). The heater unit is equipped on the inside of the housing, and preheats the heating water. The first pipe is provided on one side of the housing to discharge the preheated heating water in the housing. |
