| 摘要 |
PURPOSE: A prefabricated electric boiler is provided to stably use for a long time without thermal deformation and leakage because durability of a water storage tank forming with fiber reinforced plastics is not deteriorated. CONSTITUTION: A prefabricated electric boiler(1) comprises a water storage tank(2) having an upper casing(3) and a lower casing(4). The upper casing is a fiber reinforced plastics and has a cylindrical shape of which bottom is opened. The lower casing is the cylindrical shaped of which top is opened. A mounting hole is punched at the lower exterior of the lower casing. A pipe mounting plate(15) being a metal material is installed in the opened front of the mounting hole. A lower water level sensor(16) is installed in the upper part of the pipe mounting plate.
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