Abstract: An energy recovery unit has an energy recovery wheel located in a plenum. Expelled air from the return duct is delivered to the plenum and after passing through the wheel is expelled by an exhaust fan through a side wall. Makeup air is delivered to the plenum and after passing through the wheel is supplied to the return duct by a fan. The makeup air follows a serpentine path from an intake in a side wall to the return duct.

Abstract: A method and apparatus for screening faces of a substantially rectangular equipment. The apparatus having a frame structure including a plurality of screen support frames disposed around the equipment, each face having edge screen support frames laterally spaced horizontally between two vertical edges of each face such that a corner of the equipment includes edge screen support frames disposed in perpendicular relationship secured thereto, a plurality of movable screen cover panels and stationary screen cover panels supported within the screen support frame, the movable screen cover panels being slidably moved to substantially overlap the stationary cover panels to substantially expose the faces of the equipment.

Abstract: An energy recovery unit has an energy recovery wheel located in a plenum. Expelled air from the return duct is delivered to the plenum and after passing through the wheel is expelled by an exhaust fan through a side-wall. Makeup air is delivered to the plenum and after passing through the wheel is supplied to the return duct by a fan. The makeup air follows a serpentine path from an intake in a side wall to the return duct.

Abstract: A method and apparatus for screening faces of a substantially rectangular equipment. The apparatus having a frame structure including a plurality of screen support frames disposed around the equipment, each face having edge screen support frames laterally spaced horizontally between two vertical edges of each face such that a corner of the equipment includes edge screen support frames disposed in perpendicular relationship secured thereto, a plurality of movable screen cover panels and stationary screen cover panels supported within the screen support frame, the movable screen cover panels being slidably moved to substantially overlap the stationary cover panels to substantially expose the faces of the equipment.