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Soft-blob field with ribbon-tape seals — cool ice-lab sheet for description and returns.
Broad Compatibility: Replaces Alco EX6-I21 and 800620
designed to verify proper inducer motor operation and adequate venting before ignition
Are the seals in this rebuild kit compatible with all fluids
including the RTHA and RTHB series equipped with CHHA model compressors
this board is designed to interface seamlessly with existing system components
Lochinvar & A.O. Smith 100189284 Control 321894-709 Broad Compatibility: Replaces Alco EX6-I21The Lochinvar & A. O. Smith 100189284 Control is a critical OEM replacement integrated control board engineered specifically for Fire Tube (FTXL) heating boilers, including the FTX850, FTX850L, and FTX850N models. As a veteran technician knows, the SMART SYSTEM control module is the "brain" of the hydronic system, managing flame ignition, burner modulation, and essential safety circuit checks. This board processes real time data from outlet
