514-3275003-11 REV A AC PIPING INSTL MN DK.pdf

This document is a technical specification and installation drawing set for air conditioning piping installation on the main deck of the NOAA Research Vessel Thomas Jefferson. The drawings detail comprehensive A/C system piping layouts, connections, and component specifications for a marine research vessel operated by the National Oceanic and Atmospheric Administration (NOAA) under the U.S. Department of Commerce.

The specifications include detailed materials lists identifying copper tubing in various sizes (ranging from 1/4" to 1 1/8" OD), steel pipes, fittings, and related HVAC components organized by location and system designation. Multiple schematic diagrams illustrate piping routing across the main deck, showing A/C system controllers, air handling units, water-cooled conditioning units, liquid/suction line connections, and oil return piping for refrigeration systems. Installation details cover junction box layouts, flare connections, piping penetrations, test points, and evacuation/charging procedures. The document includes general notes addressing material compatibility, equipment installation sequencing, pressure testing protocols, brazing requirements, and cleaning procedures. Specialized sections contain refrigeration piping connection assemblies, air handling unit schematics for multiple deck locations, and comprehensive test notes covering leak detection, evacuation, evacuation time requirements, vacuum holding standards, and refrigerant charging procedures. Technical details specify that all ducting connections utilize 3/8" male flare connections and establish precise vacuum requirements (500 microns system-wide with 300 micron holding standards) before refrigerant charging.