Suburban On Demand Water Heater Water Schuste Module Board 521339 IN-STOCK Version: Genuine OEM (Suburban Manufacturing) UPC: 755790718306 MPN: 521339 SKU: 521339 Includes installation instructions 206312 Note : this module board is only for older versions of ST-60 that uses Schuste control center (link): 233678 . The newer version of the module board is Telco (link): 521493 which only works with Telco control center (link): 233797 . These module boards / control centers are not interchangable. Applicable To Model / Repair Kit (Schuste): ST-60 Updated On: 3/13/26
