HOT WATER SUPPLIER

PURPOSE:To obtain a hot water supplier at which condensed water does not generate even in case when the operation of supplying low temp. warm water is carried out by a method wherein a primary hot water outlet pipe is connected to a hot water supply pipe line for supply of high temp. hot water and a secondary warm water outlet pipe is connected to the hot water supply pipe line for supply of low temp. warm water. CONSTITUTION:Before high temp. hot water is supplied, the water flowing from a water inlet pipe 3 into a heat exchanging pipe 2 flows to a primary hot water outlet pipe 11 through the whole course of the pipe 2 and then is sent out to a hot water supply pipe line 18 through a primary inlet passage 23, a valve chamber 22, and an outlet passage 25. In this case, the water flowing from the pipe 3 is heat-exchanged and heated enough in the whole course of the pipe 2. Before low temp. warm water is supplied, the water flowing from the pipe 3 into the pipe 2 is discharged from the middle of the pipe 2 to a secondary warm water outlet pipe 12; heat exchanger effectiveness is therefore reduced properly and, as a result, though the burning of a burner 13 is carried out in such a burn-up condition as to generate no condensed water, desired low temp. warm water can be supplied.