Upgraded HVAC and Fire Life Safety Project at the Air Traffic Control Tower (ATCT) in Portland, MA

The PWM ATCT HVAC project is primarily an equipment replacement/upgrade project with Mechanical Controls. The existing chiller and dry cooler will be replaced with two new chillers. The existing boiler will be replaced with two redundant boilers. The hot water and chilled pumps will be replaced with new VFD pumps along with a new piping configuration to be installed. A total of four new CRUs will be installed to replace the existing CRUs. The existing RTU that controls the base building air will be fully replaced along with all its duct work. New VAVs to be installed in the base building system as well. The existing stair pressurization will be replaced along with the removal/addition of several smoke detectors throughout the building. The existing ballasted base building roof will be fully replaced with a PVC membrane roof system. All existing three way hydronic valves will be replaced with two way Belimo energy valves. The existing TRANE BAS will be replaced in full with Schneider Electric EcoStruxure BAS. New equipment will also be installed including fan coil unit and bathroom exhaust fans. Incidental work includes hydronic piping, domestic water piping, pipe insulation, wall insulation, framing, and gypsum board, painting, joint sealants, electrical wiring and devices, concrete pads, and equipment supports. A significant portion of the work also includes temporary heating and cooling, testing & balancing and commissioning. The list is not all inclusive and other items of work are required.