In order to limit the amount of disruption on campus, RMF's approach was phased with the use of temporary air handling equipment solutions to ensure no building, campus service, or field of research study was taken offline during the series of upgrades. RMF utilized temporary AHUs in different buildings to help keep the spaces operational while construction was in progress. Additionally, hydronic pumps and high temperature hot water (HTHW) heat exchangers were replaced in several of the buildings to improve water flow and temperature control. All systems were provided with state-of-the-art controls to maximize energy savings including variable frequency drives (VFDs) for all pumps and fans, temperature resets for all AHUs and HXs and carbon dioxide sensors to control and optimize outside air during non-economizer cycles.
One of the key methods of the renovation and quality control was the use of knock down construction. New AHUs were assembled and tested at a manufacturing plant and broken down into multiple pieces for shipping and reassembly on the Stony Brook campus. This allowed the team to de-construct and construct targeted units while strategically keeping existing units on-line and utilize temporary units to serve the de-constructed units. The knock-down construction method was used consistently on the campus for each renovated building and using the building’s existing elevators and building entrances to bring the unit components into the mechanical room to be constructed in-place.