Patent ID: 11927359
Assignee: CARRIER CORPORATION
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 13:
14. The method of claim 9, further comprising selecting, with the controller, any of:
an outdoor air mode of the rooftop HVAC unit, wherein selecting, with the controller, the outdoor air mode comprises configuring the plurality of dampers to direct the flow of the outdoor air stream through the rooftop HVAC unit such that the supply fan draws outdoor air and an exhaust fan of the rooftop HVAC unit exhausts return air;
a mixed air mode of the rooftop HVAC unit, wherein selecting, with the controller, the mixed air mode comprises configuring the plurality of dampers to direct the flow of the outdoor air stream and the flow of the return air stream through the rooftop HVAC unit such that the supply fan draws outdoor air and return air; and
a return air mode of the rooftop HVAC unit, wherein selecting, with the controller, the return air mode comprises configuring the plurality of dampers to direct the flow of the return air stream through the rooftop HVAC unit such that the supply fan draws return air.