WATER HEATING APPARATUS
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United States of America
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Issued Date -
Mar 3, 2022
app pub date -
Aug 12, 2021
filing date -
Aug 12, 2021
priority date (Note) -
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Abstract
A water heating apparatus is provided. The water heating apparatus includes a pump and is configured to be able to set a hot-water circulation route to circulate hot water discharged from a heat exchanger to be re-entered into the heat exchanger by operation of the pump. When a state of a hot-water supply operation in which a burner drives combustion is changed to an end state, hot water in the heat exchanger is circulated in the hot-water circulation route to suppress deposition of scale.
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