SU249-6

this configuration is a SU/WU unit built on a removable U-tube bundle for steam-to-liquid heating. Steam condenses in the single-pass shell while the heated fluid travels the tubes. Its envelope centers on a 24-inch diameter shell, 108-inch shell length, and roughly 137-1/2 inches overall in a 6-pass arrangement. That works out to about 806 square feet of heat transfer surface on 3/4-inch O.D. tubes. That combination is cataloged as SU249-6. The build specifies steel bonnets, steel shell, copper tubes, and steel tubesheets. Design ratings run to 150 PSI on the shell side, 150 PSI on the tube side, and 375°F maximum temperature. Installations range across radiant panel and snow-melt converters, instantaneous domestic water heating, and building comfort heating.