STORAGE TYPE HOT WATER SUPPLY DEVICE

摘要

The present invention is provided with: a hot-water-supply heat exchanger (52) for exchanging heat between water in a storage tank (8) and hot-water-supply water; a hot-water-supply heat source pipeline (46) leading from an upper part of the storage tank (8) through the hot-water-supply heat exchanger (52) to a lower part of the storage tank (8); a water supply pipeline (9) for guiding the hot-water-supply water through the hot-water-supply heat exchanger (52) to a hot-water-supply terminal; a hot-water-supply heat source pump (48) for circulating the water in the hot-water-supply heat source pipeline (46); and a controller (36). When a hot-water-supply operation is initiated, the controller (36) controls the output of the hot-water-supply heat source pump (48) so that the heat-source-side flow rate (F1) is maximized during a hot-water-supply period immediately after initiation (hot-water-supply initiation period), and controls the output of the hot-water-supply heat source pump (48) so that the heat-source-side flow rate (F1) is equal to the hot-water-supply-side flow rate (Fk) after the hot-water-supply initiation period has elapsed.