5-261-20-108-004

Configured for steam-to-liquid heating, this configuration carries the removable U-tube bundle construction that defines the SU/WU range. Steam condenses in the single-pass shell while the heated fluid travels the tubes. Dimensionally it is a 20-inch shell unit, 108-inch shell length, and roughly 121-3/4 inches overall in a 2-pass arrangement. That works out to about 582 square feet of heat transfer surface on 3/4-inch O.D. tubes. Standard construction uses cast brass bonnets, steel shell, copper tubes, and brass tubesheets. Operating limits are 150 PSI on the shell side, 150 PSI on the tube side, and N/A maximum temperature. Installations range across building comfort heating, instantaneous domestic water heating, and swimming pool heating. This build is designated 5-261-20-108-004.