摘要:
A washing device for a water treatment apparatus is provided. The washing device includes circulation members and a circulation module. The circulation members are connected to passages of the water treatment apparatus to circulate wash water through the passages of the water treatment apparatus. The circulation module is connected to the circulation members for circulating the wash water through the passages of the water treatment apparatus, with the circulation members thereby washing the passages of the water treatment apparatus.
摘要:
There is provided a warm water supply device for controlling the number of voltage pulses applied to heaters, including: a first heater configured to have a first pre-set capacity, provided at a water inlet, and heating water introduced through the water inlet; a second heater configured to have a second pre-set capacity greater than that of the first pre-set capacity, provided at a water outlet, and heating water introduced through the water outlet; and a controller calculating a first heater driving period and calculating a second heater driving period according to a water temperature introduced through the water inlet and a set heating water temperature discharged through the water outlet by using a zero crossing control scheme, and driving the first and second heaters by controlling the number of voltage pulses applied to the first and second heater according to the heater driving periods, respectively.