Water heater
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United States of America Patent
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May 27, 2014
Grant Date -
May 13, 2010
app pub date -
Jun 11, 2009
filing date -
Nov 11, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
At the time of starting a hot water discharge operation, a controller determines whether the first operation was made after the power source is switched on in S1, and the controller determines whether 5 minutes have passed after the previous operation in S2. When the first operation was not made or 5 minutes have lapsed after the last operation, the controller determines whether a difference between a detected temperature acquired by a thermistor and a preset temperature is more than 10° C. in S3. When a temperature difference is more than 10° C., a water flow rate servo is set at a position where a flow rate of flowing water is reduced from a determined flow rate by a predetermined amount in S4, and the controller performs a temperature control of discharged hot water in S8.
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