| 摘要 |
<p>The present invention relates to an apparatus for controlling a cascade system comprising a plurality of boilers or water heaters. The apparatus comprises a control device that controls each of the plurality of boilers or water heaters through a power line supplying power to the plurality of boilers or water heaters, wherein the control device comprises: a filter unit for filtering noise using externally supplied AC power; a plurality of electrical outlets for individually supplying the power filtered through the filter unit to the plurality of boilers or water heaters; and a communication module operated by means of the power filtered through the filter unit, and communicating with the plurality of boilers or water heaters connected to the plurality of electrical outlets through the power line, respectively, so as to control the plurality of boilers or water heaters. Since the apparatus of the present invention can control each of the plurality of boilers or water heaters through the power line supplying power to the plurality of boilers or water heaters, the construction of the control apparatus is very easy and construction costs can be reduced.</p> |
