| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a hot water storage type hot water supply device capable of preventing decrease of heat exchange efficiency of an auxiliary heat source machine.SOLUTION: A hot water storage type hot water supply device 1 includes an auxiliary heat source machine 3, a hot water supply passage 21, a tank hot water tapping passage 22, an auxiliary heating passage 23 and an auxiliary heat source machine hot water tapping passage 24, and in the case where high temperature water heated by the auxiliary heat source machine 3 is supplied to the hot water supply passage 21, it drives a pressure-feeding pump 27 so that a part of the high temperature water flows into the tank hot water tapping passage 22 from the auxiliary heat source machine hot water tapping passage 24. The hot water storage type hot water supply device 1 includes: a passage hot water/water temperature detection sensor 25 for detecting a hot water/water temperature tapped to the tank hot water tapping passage 22 from an upper part of a hot water storage tank 2; and a control unit 35 for controlling the pressure-feeding pump 27 according to the detection temperature of the passage hot water/water temperature detection sensor 25.</p> |
