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

Claim 8:
9. A method of operating a rooftop heating, ventilation, and air conditioning (HVAC) unit comprising an energy recovery wheel and a plurality of dampers, the method comprising:
selecting, with the controller, an operational mode of the energy recovery wheel wherein the plurality of dampers are configured to direct an outdoor air stream and an indoor air stream through the energy recovery wheel to transfer heat between the outdoor air stream and the return air stream; and
selecting, with the controller, a bypass mode of the energy recovery wheel wherein the plurality of dampers are configured to direct the outdoor air stream and the indoor air stream around the energy recovery wheel to minimize the transfer of heat between the outdoor air stream and the return air stream;
wherein the plurality of dampers includes an exhaust outlet damper which is configured to allow the return air stream out of the energy recovery wheel through an exhaust outlet when opened.