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CTV-PRC007-EN34
Controls
Building Automation and Chiller Plant
Control
For building automation and control of
chilled water plants, Trane has
developed the Tracer Summit
™
. It can
control the operation of the complete
installation: chillers, pumps, cooling
towers, isolating valves, air handlers and
terminal units. It is a pre-programmable,
but, flexible control system module,
configured according to the
requirements of the end user. Trane can
undertake full responsibility for an
optimized automation and energy
management for the entire chiller plant.
The main functions are:
•
Chiller sequencing: equalizes the
number of running hours of the
chillers. Different control strategies are
available depending on the
configuration of the installation.
•
Control of the auxiliaries: includes
input/output modules to control the
operation of the various auxiliary
equipments (water pumps, valves,
cooling towers, etc.)
•
Time of day scheduling: allows the end
user to define the occupancy period,
i.e. time of the day, holiday periods and
exception schedules.
•
Optimization of the start/stop time of
the installation: based on the
programmed schedule of occupancy
and on the historical record of the
behavior of the temperatures,
calculates the optimal time of start and
stop of the installation to get the best
compromise between energy savings
and comfort of the occupants.
•
Soft loading: the soft loading function
minimizes the number of chillers that
are operated to satisfy the building
morning pull down, thus preventing an
overshoot of the actual capacity
required. Unnecessary starts are
avoided and the peak current demand
is lowered.
•
Communication capabilities: several
communication levels are provided:
— local, through a PC workstation
keyboard. Summit can be
programmed to send messages to
local or remote workstations and or
a pager in the following cases:
— Analog parameter exceeding a
programmed value.
— Maintenance warning.
— Component failure alarm.
— Critical alarm messages. In this
latter case, the message is
displayed until the operator
acknowledges the receipt of the
information. From the remote
station it is also possible to access
and modify the chiller plant’s
control parameters.
•
Remote communication through a
modem: As an option, a modem can
be connected to communicate the
plant operation parameters through
voice grade phone lines.
The remote terminal is a PC workstation
equipped with a modem and software to
display the remote plant parameters.
Chiller Plant
Control