C1DA--528A8-18-801 Design Renovate for Vir-Cardiac Cath

The project includes design and construction period services for replacing the air cooled chillers currently used to serve critical AHUs at the Albany VAMC including OR, PACU, ICU, and Cath Lab. The goal of the project is to improve the reliability of this backup chilled water system. The equipment to be replaced includes: two (2) 165 ton split chillers with air cooled condensers. The related refrigerant piping, chilled water pumps and piping, and controls will be modified as necessary to provide a reliable and efficient system. The proposed chillers shall each have a minimum of two compressors, be capable of variable primary chilled water flow and be capable of operating with outdoor temperatures ranging from -10F to 95F. The existing chillers are located in the sub-basement Rm. S-22. The existing air cooled condensers are located on the roof of a 1st floor addition. The OR chillers use a separate chilled water piping system to serve the critical AHUs listed above with a manual changeover between chilled water supplied from a central plant to chilled water provided by the OR system. The OR chillers and CHW system is typically only used when the outdoor air temperature exceeds 50F and the central plant is offline (winter, loss of power, etc.). Emergency power is currently supplied to the OR chillers and related primary pumps using automatic transfer switches. The chiller controls however need to be re-configured to have service from emergency power. The OR chillers are currently monitored and enabled by the hospitals BMS.