AUTOMATIC EXCHANGE SYSTEM OF GAS FURNACE

摘要

PURPOSE: An automatic exchanging system of heating water is provided to drain polluted heating water by measuring the quality of heating water flowing through a heating pipe and to supply water into the heating pipe through a reducing valve. CONSTITUTION: A heating water suction port(1) and a heating water drain port(2) are arranged at a heating water port. An automatic exchanger of heating water having a water sensing/discharging valve(3) is mounted on a side. A reducing valve is installed on a water feed line to feed fresh water into a heating pipe after draining heating water. The polluted heating water is measured by an electrode rod(39) of the water sensing/discharging valve and drained through a heating water drain port(33) by a solenoid valve(35). A check valve is opened by pressure falling in the reducing valve. Therefore, the fresh water flows into the heating pipe automatically.