BAS shall be direct digital control (DDC) for providing
lower operating costs and ease of operation.
Microprocessor PID controllers monitor and adjust
building systems to optimize their performance and the
performance with other systems in order to minimize
overall power and fuel consumption of the facility, BAS
monitor systems such as HVAC and lighting.
The system
will consist of series of direct digital controllers
interconnected by a local area network. BAS system will
be accessible through a web browser. System will have a
graphical user interface and will offer trending,
scheduling, downloading memory to field devices,
real-time “live” graphic programs, parameter changes of
properties, set point adjustments, alarm/event
information, confirmation of operators, and execution of
global commands.
A BAS is not required for every project and is
evaluated based on the size of the building. Buildings
of 100,000 gsf. and more shall have a BAS. The size of
the building, number of pieces of equipment, expected
energy savings and availability of trained staff should
all be considered before a decision is made. BAS is
required and considered part of the system on large
facilities (above 9,300 gross square meters (100,000
gross square feet)), both new facilities and major
modernizations.
