Trane Tracer Summit Hardware And Software Installation Manual page 232

Glossary
UIP
See Universal input.
unit control module (UCM)
A factory-mounted, microelectronic circuit board that interfaces with a
BCU to provide control and monitoring of HVAC equipment.
universal input (UIP)
An input point that can be configured (typically via jumpers) to take
either analog or binary inputs. An optional BCU I/O module adds five
universal inputs to the BCU.
UPCM
Universal programmable control module.
V
VAV
Variable air volume.
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