ON-DEMAND TANKLESS HIGH VOLUME CAPABLE WATER HEATING SYSTEM
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United States of America Patent
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Issued Date -
Apr 9, 2015
app pub date -
Oct 3, 2014
filing date -
Oct 3, 2013
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Abstract
An on-demand high volume capable water heating system for supplying a total heating power at a high turndown ratio of at least about 33.3:1 and at a total flowrate of from about 0.6 GPM to about 50 GPM. The water heating system includes multiple heat exchangers where each heat exchanger includes a fluid conductor and a controller, an exhaust manifold configured to receive exhaust from the multiple heat exchangers, eliminating the need for an exhaust for each of the multiple heat exchangers, a recirculation circuit fluidly connected to each of the multiple heat exchangers and an enclosure. Each controller is adapted to determine the portion of heating power each heat exchanger is required to contribute to the total heating power and the portion of the total flowrate flowing through the fluid conductor. The heat exchangers and recirculation circuit are located within the enclosure.
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