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Johnson � Controls BuildinLF Automation System Control Enhancements St. Anthony has a variety of pneumatic, electric and digital controls that are used throughout most of the City facilities. City Hall has an old pneumatic control system with an independent electronic system for the roof top units. During the analysis, it was determined savings could be produced by equipment scheduling and better control of the building. The building automation system would utilize the building's Ethernet LAN system to centralize and network building control, allowing facility personnel to monitor buildings remotely. The other facilities are not equipped with full control systems, but they could benefit from the improved ability to control equipment and scheduling. Afann New Controls Installation: JCl will update the current systems to the new web -based Metasys. Metasys will centralize scheduling control of the ventilation equipment and heating and cooling plant. Based on the condition of the existing pneumatic controls and the desire to implement new energy saving measures, additional new controls will be installed at each air handling unit. With Metasys, all air handling units will have the ability to be scheduled on /off. This will allow St. Anthony to schedule on demand any future events along with the day -to -day operation of the buildings. All facilities would be tied into one system accessible via the internet. Metasys would also be able to control items that are currently controlled manually such as the liquor store heating and cooling system and monitoring the beer cooler temperature. The Fire Station would also benefit from a comprehensive system for the bunk area rather then a single control for all three bunks. • Variable Frequency Drive (VFD) Applications: A facility's heating and ventilation systems are designed for worst -case conditions or, in the case of a meeting room when the space is at maximum occupancy. Therefore, the majority of the time, the ventilation system is grossly oversized, thus wasting energy. A VFD is an electronic device that can vary the speed of an electric motor in response to space conditions providing the minimum output to meet the actual needs of the space. A VFD provides the benefit of reduced electrical usage from the motor and reduced fuel usage because the volume of water or air that needs to be heated is greatly reduced when the motor slows down. VFDs also increase the life expectancy of motors since the motors can now be ramped up to speed slowly instead of slammed on to full speed. Several of the VFDs have been installed on the City Hall Roof Top Units (RTUs). During the evaluation of the building, it was indicated that several of these units were not working properly. L Also, of the units that were working, the present computer system did not show that they were working properly. Page 9 City of St. Anthony Village L PROR Performance Contract Analysis NOT TO BE REPRODUCED OR DISTRISWYttiISUTED AND WITHOUT JOHNSON CONTROLS PERMISSION