M-803.pdf

This is a mechanical control and hydronic systems diagram included in the bid documents for a VA project to replace the roof and HVAC system in Building 9. The drawing shows detailed control diagrams for two systems: 1) Steam to Hot Water Control and 2) Chilled Water Control. The diagrams include technical specifications for valves, sensors, pumps and other mechanical components along with their interconnections and control parameters. General sheet notes provide installation requirements and specifications for components like pressure gauges, thermometers, flow meters and control valves. The drawing was prepared by Guidon as consultants and is part of project #502-17-102 for the Department of Veterans Affairs Office of Construction and Facilities Management.

The level of technical detail suggests this is part of the construction bid package that contractors would use to understand the mechanical system requirements and prepare their bids. The drawing appears to focus specifically on the control systems for both heating and cooling operations in the building renovation project.