The Economizer Availability module defines the suitability of the economizer based on a number of possible inputs (including outdoor air temperature and humidity, return air temperature, and humidity), a hardware switch commonly know as Enthalpy Switch, and a network command that most likely originates in a supervisory controller.
You can view and modify the modules in this group’s logic; however, the Free Cooling Availability contained within this module that performs much of the module’s calculations cannot be viewed or modified.