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P Government Center Controls Upgrade Existing pneumatic controls associated with seven (7) existing air handling units (AHU) throughout the Government Center were removed and replaced with direct digital controls (DDC). Additional installed equipment included: • One (1) new hot water and one (1) new chilled water modulating flow control valve with electric actuation for each of the AHUs • New electric actuators, where required, for existing mixed air dampers and relief dampers • One (1) new variable frequency drive (VFD) for each AHU supply fan motor • Ninety-one (91) modulating flow control valves with electric actuation for all hot water reheat coils associated with the variable air volume (VAV) boxes • Ninety-one (91) wall mounted thermostats to control the VAV boxes • New DDC programmable controllers for all existing convection heaters, cabinet heaters, unit heaters, and exhaust fans • New modulating flow control valves with electric actuation, where required, for existing convection heaters, cabinet heaters, and unit heaters • Thirty-one (31) DDC programmable controllers for the fan coil units (FCU) • One (1) new hot water and one (1) new chilled water modulating flow control valve with electric actuation in the return lines for each FCU • Thirty-one (31) wall mounted thermostats to control the FCUs How SaviM Were Determined — The Energy Savings for the Government Center Controls Upgrade were calculated using eQUEST, which is a DOE2 energy simulation software. The baseline eQUEST input file details the building components, occupancy schedules, lighting schedules, equipment efficiencies, etc. in order to establish the building's baseline energy consumption. The modeled energy consumption was compared to, and adjusted to match, the actual utility bill data. Modifications were then made to the baseline energy model to simulate the energy savings that result from enabling new control sequences for the air handlers and fan coils. ,; . .,„ 'G � 'r/./u/i %ice/%/, r�///i!!d/1 /�%/r(/,r1GJ�/.-/!rG/;///„.. / City of South Bend —August 27, 2019 38 11. Measurement & Verification ' eqe content is subject to Confidentiality Restrictions"