Systems and methods for fault detection using smart valves
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United States of America Patent
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Nov 5, 2019
Grant Date -
Aug 20, 2015
app pub date -
Apr 29, 2015
filing date -
Dec 17, 2013
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Abstract
An air handler unit (AHU) in communication with a building automation system (BAS) or through direct programming of one or more smart valves within the AHU operates to meter an amount of water that flows through a coil in the AHU. In one embodiment, the BAS transmits a temperature setpoint signal to the smart valve and allows the smart valve to control its valve position without additional input from the BAS. In another embodiment, the AHU includes a master smart valve and a second valve. The BAS provides the temperature setpoint signal to the master smart valve, which in turn provides another temperature setpoint signal to the second valve. The second valve may take the form of a slave smart valve or a slave non-smart valve.
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