SOLAR HEAT WATER-HEATER FACILITY

摘要

PROBLEM TO BE SOLVED: To provide a solar heat water heater facility which does not exceed hot water temperature in a solar heat water heater at 100 deg.C even if the pressure of the heater is set to 1kg/cm<2> or more and which makes it possible to prevent freezing of water in winter without winding a heater band with a long thermostat on a water supply tube and a hot water supply tube. SOLUTION: A second communicating tube 22 for communicating a water supply tube 11 with a hot water supply tube 12 is provided at the position of lower site than a solar heat water heater 10, and a pump 23, a first warm water pressure valve 24 and a heater 25 are provided at the tube 22. Further, a drain pipe (not shown) is coupled to the valve 24 to drain the hot water near the ground surface. A second warm water pressure valve 26 is provided at the hot water outlet 10b of the heater 10. And, a temperature sensor 27 for detecting the hot water temperature in the heater 10 to control the operation of the pump 23 is inserted into the outlet 10b of the heater 10.