Complete upgrade of the mechanical room supporting National Grid’s 50,000 ft2 Main Office Building was completed. 4 air handlers of approximately 30,000 cfm each were replaced, 4 modular chillers were replaced, chilled water and condenser water pumps were replaced and re-piped. A heat exchanger was added to the system to separate the existing geothermal well water from the building’s condenser water to solve the existing issue of broken and blocked condenser water coils. The motor control center was upgraded, and HVAC controls were upgraded from pneumatic to electronic.
The project was designed to be completed in 4 phases over several years to continue full office operation during construction and meet the clients’ budgetary goals. Principals of New York Engineers performed this project while at previous firms including Joseph R. Loring and Associates and HKA.