HOT-WATER FLOOR HEATING DEVICE

摘要

PURPOSE:To supplement water safely under continuing floor heating without generating the problem of mixing air into a pump or returning of hot-water by a method wherein a changeover valve is provided between a hot-water circulating path and a water supplementing tank and the communication between the tank and the hot-water circulating path is closed when the water is supplemented into the tank. CONSTITUTION:The hot-water floor heating device is provided in the hot-water circulating path 8 with a four-way changeover valve 9 connecting the upstream side of the tank 4 with the downstream side of the same. When water is supplemented into the tank 4, the four-way changeover valve 9 is switched to a condition that the hot-water circulating path 8 is opened without passing through the tank 4. Accordingly, water in the hot-water circulating path 8 is not affected even when the cap 5 of the tank 4 is opened and the water level of the tank 4 is not changed. According to this method, air will never be mixed into the pump 6 even when the water is supplemented under operating the pump 6 to continue the floor heating.