Appendix_3_-_245-D-10066.pdf

This is a mechanical engineering drawing that depicts the chiller piping and HVAC modifications for the mechanical room (B10) in a basement. The drawing is part of continued design documentation identified as drawing 245-D-10066 and includes a basement plan view showing the layout of chiller piping systems, HVAC components, and related infrastructure modifications.

The drawing illustrates existing and proposed piping configurations, including water supply and return lines for the chilled loop system, positioning of the existing air handling unit (AHU), control panels, drainage systems, and various mechanical components. Key elements shown include existing 2-inch and 3-inch piping, connections to the refrigerant line, expansion tanks, circulating pump assemblies, isolation valve locations, and interconnections between the chiller system and AHU cells. The document notes that all work shall be performed in compliance with existing code and manufacturer's recommendations, with field verification of dimensions, materials, sizes, and routing required prior to installation. Additional references are provided for concrete specifications, equipment anchoring, and coordination with structural elements. This drawing serves as a technical specification for contractors implementing HVAC system modifications and chiller piping installation in the facility's mechanical room.