40 - Attachment 0004 SEED PROJ SOW 1991 ENL BRKS PH 4 EQP SCHD 041834.pdf

This document is a set of control diagrams for mechanical and electrical systems in military barracks facilities. The diagrams illustrate the operational sequences and control logic for finned tube radiators, dual temperature heating systems, unit heaters, heat exchangers, and mechanical equipment room ventilation systems.

The control diagrams specify operational requirements for maintaining appropriate temperature conditions in barracks facilities. For finned tube radiators, the diagrams detail automatic circulation and temperature control mechanisms to maintain preset temperatures while preventing freezing. The dual temperature system diagrams show control logic for managing heating in different zones with thermostat-based regulation. Unit heater controls are designed to maintain automatic operation with staffing and temperature-based activation sequences. The heat exchanger diagram establishes the sequence of operation for hot water system placement and circulation pump activation during heating periods. Mechanical equipment room ventilation controls specify summer and winter positioning of exhaust fans and intake dampers to manage room temperature. Additional notes throughout the diagrams provide specific technical requirements for each system, including temperature rise specifications, valve operation parameters, and safety considerations such as freeze protection and temperature limit maintenance above set points. The diagrams are designated for U.S. Army Engineer District Baltimore and appear to be part of a larger specifications document for enlisted barracks construction, identified as Phase II.