Distribution Doors

The distribution door positions are determined by the control components. The distribution doors open and close air flow passages inside the heater to establish air flow direction. There are two distribution doors inside the heater: the panel/defrost door and the panel/floor door. The panel/defrost door can be positioned either to block or to direct air to the panel ducts or defrost ducts. The panel/floor door can block or direct air to the panel ducts or the floor ducts.