Electric tankless water heater
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United States of America Patent
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Aug 24, 2010
Issued Date -
N/A
app pub date -
Aug 6, 2004
filing date -
Aug 6, 2004
priority date (Note) -
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Abstract
In various aspects, the present invention provides an electric tankless liquid heater system capable of delivering liquid, such as, for example, water, with an acceptable increase in output liquid temperature upon a sudden and substantial decrease in liquid demand. In various aspects, the electric tankless liquid heater comprises an inlet manifold and a plurality of liquid heaters the inlets of which are connected in a parallel flow relationship by the inlet manifold, and the outlets of which are each connected to a separate outlet conduit, and which is configured to provide water to a plurality of automatic water fixtures with a less than about 2° F. (about 1.1° C.) increase in output water temperature upon about a one-and-a-half-fold or greater decrease in water demand that occurs in less than about 500 milliseconds as measured by the increase time of the inlet liquid pressure.
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