WU289-4

WU289-4 is a SU/WU unit built on a removable U-tube bundle for liquid-to-liquid heating and cooling. Pumped boiler water circulates through the baffled shell against the tube-side fluid. Dimensionally it is a 28-inch shell unit, 108-inch shell length, and roughly 147-5/8 inches overall in a 4-pass arrangement. That works out to about 1088 square feet of heat transfer surface on 3/4-inch O.D. tubes. As furnished, materials include cast iron or brass bonnets, steel shell, copper tubes, and steel or brass tubesheets. On the ratings side, expect 150 PSI on the shell side, 150 PSI on the tube side, and 300°F maximum temperature. The series sees regular use in condensate cooling, hydronic HVAC converters, and pool and storage-tower heating.