Z--Mechanical System Upgrades

Description: There is a base requirement with 2 options. The base requirement is to remove two existing Air Handling Units (AHU-3 & AHU-4) and one boiler supplying the 1st and 2nd floors of Building 28 and then furnish, install and test one new Air Handling Unit (AHU-3) with two heating coils and two new boilers to supply the first and second floors of Building 28. Option A is to remove existing DX Air Handling Unit (AHU-9). Furnish, install and test a new DX Air Handling Unit (AHU-9) supplying the Museum lobby space, including modifications to existing ductwork in the lobby. Option B is to Replace select components of existing AHU-2 in Building 22 Substation. The Museum will remain open for the duration of the contract. Contractor shall have full use of mechanical spaces and chiller area for construction operations during the construction period during normal business hours of the USS Constitution Museum, when Museum staff are present at the site.

Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC), Heating Boilers.
Division 42 -	Process Heating, Cooling, and Drying Equipment, Process Boilers.