Patent attributes
A single-package, wall-mount air conditioner is provided with an economizer unit having a pair of vertical conduits for delivering fresh outside air to a pair of blowers and a damper system that can be selectively positioned to open and close the conduits. The damper system also opens and closes return air recirculation openings through which return air is delivered to the blowers. When the air conditioner is operating in an economizer cooling mode, the return air recirculation openings are partially or completely closed and some or all of the return air is discharged outwardly and upwardly from the air conditioner in a manner to impede any entrainment of the discharged return air with the fresh outside air that is entering the air conditioner.
