A main air handler located on the eighth floor controls the interior of the building. A second air handler located on the eleventh floor provides high-velocity air to 336 independently controlled convection units. Each one of the convection units also has a hot water supply, cold water supply, and a common return.
The air handler located on the eighth floor is a typical design and uses the hot deck/cold deck arrangement with the help of 50 mixing boxes to provide control to the interior of the building.