SU223-4

Built around a removable U-tube bundle, this configuration delivers steam-to-liquid heating for demanding service. Steam condenses in the single-pass shell while the heated fluid travels the tubes. Physically, the unit runs a 22-inch shell, 36-inch shell length, and roughly 63-3/16 inches overall in a 4-pass arrangement. That works out to about 249 square feet of heat transfer surface on 3/4-inch O.D. tubes. That combination is cataloged as SU223-4. Standard construction uses cast iron or brass bonnets, steel shell, copper tubes, and steel tubesheets. Operating limits are 150 PSI on the shell side, 150 PSI on the tube side, and 375°F maximum temperature. Installations range across building comfort heating, instantaneous domestic water heating, and swimming pool heating.