9-B162 Controls2.pdf

This document is a set of control diagrams for steam, heating water, and domestic water metering systems for an expanded rehab medicine and SRS facility at NAVAMCS Prescott, AZ.

The diagrams illustrate three interconnected systems: a steam metering diagram showing steam distribution from campus with pressure control and monitoring; a steam/heating water control diagram detailing hot water supply temperature control with differential pressure regulation, relief valve positioning, and pump operation parameters; and a domestic water metering diagram for potable water distribution. The steam/heating water system includes specific operational requirements such as maintaining hot water supply temperatures between adjustable setpoints, controlling differential pressure with adjustable set points, managing pump operation with open/closed relief valves, and disabling heat exchangers under defined conditions. The system incorporates multiple pressure control valves, check valves, strainers, and temperature monitoring points. Key operational provisions include alarm triggers for temperature deviations exceeding 150°F, requirements for differential pressure transmitters to control pump operation, and specifications for valve positioning and relief settings. The diagrams also address water circulation pump management, steam control valve operation tied to hot water supply temperature, and provisions for preventing short cycling of heat exchangers. These control diagrams serve as technical specifications for building systems infrastructure, establishing parameters for safe and efficient operation of steam, heating water, and domestic water distribution throughout the facility.