Trane CVGF manual Chiller-TowerOptimization, Integrated Comfort System ICS

Features and Benefits

•Time of day scheduling: allows the end user to defi ne 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 temperature records, Tracer SummitTM calculates the optimal start/stop time 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 a large chilled-water-loop pull down, thus preventing an overshoot of the actual capacity required. Unnecessary starts are avoided and the peak current demand is lowered.

•Communication capabilities: local, through a PC workstation keyboard Tracer SummitTM 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-Tower Optimization

Tracer Summit™ chiller-tower optimization extends Adaptive Control™ to the rest of the chiller plant. Chiller-tower optimization is a unique control algorithm for managing the chiller and cooling- tower subsystem. It considers the chiller load and real-time ambient conditions, then optimizes the tower setpoint temperature to maximize the effi ciency of the subsystem.

Integrated Comfort™ System (ICS)

The onboard Tracer chiller controller is designed to be able to communicate with a wide range of building automation systems. To take full advantage of the capabilities of the chiller, incorporate your chiller into a Tracer Summit building automation system.

But the benefi ts do not stop at the chiller plant. At Trane, we realize that all energy used in your cooling system is important. That is why we worked closely with other equipment manufacturers to predict the energy required by the entire system. We used this information to create patented control logic for optimizing the HVAC system effi ciency.

The building owner’s challenge is to tie components and applications expertise into a single reliable system that provides maximum comfort, control and effi ciency. Trane’s Integrated-Comfort

™Systems (ICS) are a concept that combines system components, controls and engineering applications expertise into a single, logical and effi cient system. These advanced controls are fully commissioned and available on every piece of Trane equipment, from the largest chiller to the smallest VAV box. As a manufacturer, only Trane offers this universe of equipment, controls and factory installation and verifi cation.

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