| 摘要 |
To provide a storage water heater capable of increasing thermal efficiency and quickly boiling when tap water is supplied into a hot-water tank. A storage water heater 1 can heat low-temperature water having a high density because hot water in a hot-water tank 10 is led from a lead-in pipe 18 positioned at the bottom of the hot-water tank 10 to a gas heater 51 . Also, a water supply pipe outlet 15 and a lead-in pipe inlet 19 are provided so as to be opposed to each other on the same axis. Therefore, when tap water is supplied from a water supply pipe 14 , the tap water lower in temperature than the hot water in the hot-water tank 10 is preferentially led to the gas heater 51 . With this, hot water at the lowest temperature in the hot-water tank 10 can be selectively heated, thereby increasing thermal efficiency.
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