Trane IntelliPak Installation, Operation And Maintenance Manual page 23

Figure 9. Space temperature averaging
Figure 10. Control module locations for 20-36 ton units
RT-SVX36K-EN
Space Temperature Averaging with Multiple
Sensors Unit Control Modules (UCM)
Unit control modules are microelectronic circuit boards
designed to perform specific unit functions.These
modules through Proportional/Integral control algorithms
provide the best possible comfort level for the customer.
They are mounted in the control panel and are factory
wired to their respective internal components.They
receive and interpret information from other unit
modules, sensors, remote panels, and customer binary
contacts to satisfy the applicable request for economizing,
mechanical cooling, heating, and ventilation. Figure 9
below illustrates the typical location of each "1U"
designated module.
General Information
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