GOC2438126-CS - Building Ventilation Upgrades - Consulting Services

Replace 9 main air handlers, other connected fans and convert Constant Volume System (CAV) to Variable Air Volume (VAV) system for areas identified in the AHU and Fan Study Report completed March 2018 under BGIS Project Number GOC754646. Feasibility study by consultant to include analysis to convert labs from Constant Volume System (CAV) to Variable Air Volume (VAV) system. Most of the control systems of the Air Handling Units (AHU) are still pneumatics and are to be upgraded to Direct Digital Control with the removal of the old pneumatics. Replacement to include correct sizing and energy efficiency upgrades. Consideration to be given to SRI glycol for the preheat and heating coils of the AHU’s as it has better heat transfer and is environmentally preferred. AHU #9 heating coils to be converted from water to glycol. The heating, ventilation and air conditioning of the building is through 9 central AHU's that operate in concert with terminal units (VAV boxes, reheat coils, perimeter radiators, etc.). The cooling and heating of the AHU's are supplied by a chiller plant and hot water boiler plant. Refer to AHU and Fan Study (GOC754646) and Building VAV Study (GOC1506086) for detailed scope and findings.