BMTX-SVU01B-EN 219
Glossary
A AHU
Air-handling unit.
Alarms
A notification that HVAC equipment is not operating correctly. For exam-
ple, an alarm is generated when communication is down between an
HVAC unit and the BCU, or when a filter on an HVAC unit is dirty.
Area
A defined space in a facility that can be anything from a single office, a
group of offices, a large open warehouse, or a manufacturing site. A
defined area allows you to coordinate heating, cooling, lighting, and venti-
lation and to maintain a comfort level in a defined area of the facility
using Area Control.
ASHRAE
American Society of Heating, Refrigeration, and Air Conditioning Engi-
neers.
B BAS
Building automation system. A combination of controllers and other soft-
ware products that communicate and control various mechanical systems
to enable building management. These products include the heating, ven-
tilating, and air conditioning systems, as well as lighting systems, access
control, and miscellaneous other devices within a building.
BCU
Building control unit. The BCU is a panel that communicates with and
controls the unit control modules (UCMs) in a building. It communicates
UCM status, alarm, and event information to the Tracer Summit soft-
ware at the PC Workstation. Tracer Summit may have more than one
BCU connected to it.
C CFM
Cubic feet/minute (rate of airflow).
Cooling degree day (CDD)
The difference between 65°F and daily average (mean) temperature.
Daily average mean is the average of the maximum and minimum tem-
peratures recorded during the day.
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