State Farm Center Retrocommissioning (RCx)

A collection of work done by a collaborative, multi-team effort helped SFC avoid about $214,000 in energy costs thanks to a partnership with F&S and the Department of Intercollegiate Athletics. The RCx team collaborated with the Division of Intercollegiate Athletics (DIA) to discover the best methods to bring SFC up to more efficient standards. The Revolving Loan Fund (RLF) was the financing source, a program used for utilities conservation projects with less than ten-year payback periods, including steam, electricity, chilled water, or water reduction projects.

Read the F&S INSIDER Magazine story here: https://fs.web.illinois.edu/Insider/2022/08/12/above-and-beyond

Specifics & Results

• Reviewed and optimized all Siemens programming
• Shut off AHU’s and run in floor mode which only runs 2-4 units
• Reduced half of the operating units during unoccupied hours
• Shut off perimeter hot water heating systems for entire summer
• Educated users and occupants on operating modes of operation
• Reduced outside air exhaust where possible to pressurize the building
• Old controls from previous project were restored to operating conditions
• Replaced failed Siemens occupancy, CO2, and CO sensors
• Reviewed and optimized all 26 AHU operations

Highlights

• Summer shut down of perimeter hot water heating systems
• Calibrate AHUs, check freeze stats, fix LL-40 discrepancies
• Calibrate VAVs, check CO2 control, increase heating airflow
• Fixed economizer mode on multiple air-handling units
• Resolved temp calibration issues so adjacent units work in unison
• Reduced/controlled exhaust in mechanical rooms
• Removed 3-way valve wasting CHW
• Removed OA that could have frozen a CHW coil