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AMERESC0 <br />Green • Glean • Sustainable `� <br />ECM 4 — HVAC System Upgrades <br />The savings resulting from the HVAC System Upgrades ECM are the direct result of replacing old, <br />inefficient equipment with newer equipment that consumes less energy to operate. <br />Section B Suites and Hallway Area Upgrades: <br />- 11 existing Carrier Moduline boxes with diffusers were replaced with variable air volume <br />(VAV) boxes and 2x2 or 2x4 standard linear slot diffusers. <br />- The existing pneumatic control system was replaced with a new building automated control <br />system (BAS). <br />- Existing meeting room exhaust fan control was added to the new BAS. <br />- Occupancy sensors that were installed along with the lighting upgrades are used to close VAV <br />boxes and turn off exhaust fans when the space is empty. <br />Isolation Damper Installation on Air Handling Units 1, 2, and 8: <br />- BAS controlled isolation dampers were installed to isolate different areas that are served by <br />the same AHU (i.e., office area vs. ball room, meeting room vs. lower level kitchen, etc.) <br />October 15th, 2024 <br />Page 13 <br />