This section applies when the free cooling current mode is single enthalpy.
For single enthalpy economizer operation, the outdoor air is suitable for free cooling if the outdoor air enthalpy is at least 1 BTU/lb below the economizer outdoor air enthalpy setpoint and the operational outdoor air temperature is less than the outdoor air temperature enable setpoint (EconOAT-SpEn).
Free cooling is no longer available if the operational outdoor air temperature rises above an outdoor air temperature enable setpoint (EconOAT-SpEn) or the outdoor air enthalpy rises above the economizer outside air enthalpy setpoint.