Trane MOD2666 Economizer Logic Mod

The Trane MOD2666 Economizer Logic Mod is an electronic device that is uniquely suited for Trane air handling units that feature the RELIATEL control system; it is critical for managing the economizer cycle and energy utilization. An economizer works when the air outside is colder than the internal air that has been conditioned and it brings it into the building. In using outside air, the logic mod also reduces the need for mechanical cooling. In other words, the mod that is described in this paper effectively acts as an intelligent switch that is used to decide when free outside cooling should be employed to reduce the load on the mechanical cooling system.