Description

Estimate: $430,000.00

Estimated Length of Project: 301 (Substantial Completion) + 30 (Final Completion)

The History Center Environmental Control Units (ECU) provide temperature and humidity conditions within a stable range in the Archival Storage Area of the History Center. This project consists of the installation of two ECUs and associated roof mounted air-cooled condensers, power & control wiring, refrigerant, water and drainage piping to replace the one existing unit and provide redundancy with a second unit. Additionally, the project includes replacing sections of the existing ductwork and the replacement of existing diffusers. The system will be interfaced with the ALC WebControl system to provide temperature averaging, scheduling, monitoring, and reporting of data to CEMCS. The allowance for the controls work is to be included in the contractors bid at the pre-determined allowance listed in the bid documents. Roof curbs for the remote air-cooled condensers have been included in a roof replacement project separate from this ECU replacement project. The contractor is responsible for coordinating the installation with the roof replacement contractor and is responsible for setting the condensers and running refrigerant piping, electrical and control wiring between the system components.