Methods for detecting and responding to freezing coils in...

Details Methods for detecting and responding to freezing coils in... Methods for detecting and responding to freezing coils in...

F - Mech Eng,Light,Heat,Weapons

24

F

F24F 11/00 (2006.01) F24F 13/22 (2006.01) F25B 47/00 (2006.01)

Patent

CA 2572667

A method to detect and respond to a coil condition in an HVAC system. The method includes calculating an initial airflow restriction value and a current airflow restriction value, which are compared. If the current airflow restriction value is greater than a first sum including the initial airflow restriction value and a first restriction factor, then a coil condition is preliminarily determined to be freezing and cooling in the HVAC system is stopped.

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