| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a hot water supply apparatus to reduce formation of scales firmly primary-bonded to a heat exchanger surface and in its turn, prevent reduction of heat transmission of the hot water supply apparatus, reduction of a supply hot water temperature, and water of fuel for a long period. SOLUTION: The water supply apparatus is formed that a means is provided to supply water having a higher acidity than that of water supplied through a water supply faucet and water having acidity is supplied to the heat exchanger.</p> |
