PURPOSE: To reduce cost and save a space by providing a heating supply means which supplies a circulating fluid heat-exchanged with hot water in a hot water tank with a hot water means to a heating load, and executing heating operations which include indoor heating service, hot water supply service, and hot water retaining service for a bath with one heating means in the structure.
CONSTITUTION: A heating pipeline 8 is installed so that it may be provided with a hot water supply means which comprises a hot water tank provided with a burner 2 and a circulation pump P1 which is designed to heat-exchange between a heating load 7 and hot water 6 in the hot water tank. It is also arranged so that hot water 10 in a bath tub 9 may heat-exchange with the hot water 6 and return the water to the bath tub 9, thereby forming a hot water cleaning and heat retaining pipeline provided with a circulation pump P2. A three way valve V1 is installed between a filter 12 of a feed line of the pipeline 11 and a heat exchanger 11c wherein the three way valve V1 and a return line 1b of a heat exchanger 11c are connected with a bypass circuit 13. A water supply pipeline 3, a water supply pipeline 5, and the return pipeline 11b are connected with a bath tub water make up pipeline 15.
HARUYAMA KENICHI
MURATA HIDEKAZU
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