This project included the removal and replacement of 22 air handler units throughout the active main hospital building. All major components of the work were to be performed during off-hours, nights and weekends.
Scope of work included replacing the air handlers; retro-fitting the return air fans to be variable speed in lieu of inlet vane control; replacing the control dampers for outside air and exhaust air; replacing the air monitoring stations and controls; replacing the control valves; and the cleaning and coating of the outside air plenum sections of the equipment. The equipment replacement access was accomplished by both exterior building penetrations and by manufacturing affected modules with dimensions suitable for transit through existing hospital elevators and passageways. Temporary cooling was provided for all affected areas. Various classes of ICRA were required for every installation and were coordinated through the local infectious control department.
This project entailed demolition and replace of air conditioning units inside the hospital. Other scopes affected were electrical and piping. Since existing units were so old, upgrade included new installation of VDF’s with new wiring and controls. Return fans were modified to accept VFD’s. Chilled and hot water pipe valves were replaced to ensure they opened and closed properly. Piping and ductwork were modified to accommodate new units.