Project highlights:

• Demolition of existing AHUs including return fan and associated ductwork in the north penthouse area (Building 1 CA) and rooftop area
• Demolition of piping connected to AHU-1 and 23 (chilled water, heating water, and steam) back to the mains
• New modular type, semi-custom air-handler with a max capacity of (23,000cfm) housing an array fan wall system with chilled water and hot water coils for cooling and preheating
• Pre and final filter box system with final filter box housing MERV 17 filters
• New AHU also has dehumidification capability using a reheat coil as well as humidification
• New ductwork in the north penthouse area connecting the AHU to the existing ductwork in the mechanical chase
• New piping installed from main chilled and heating water lines, connected to new AHU coils
• New heating water pipe loop installed in the penthouse to supply heating water to the new AHU as well as future AHU replacements
• Existing controls modified to accommodate the new air-handler with additional DDC points
• Existing terminal air boxes in surgical suite areas modified to enable airflow turn-down during unoccupied hours via both scheduling and occupancy sensors