the 5412I is the official cross-reference and direct replacement for the 2412I model

By utilizing this OEM field mounting kit

Optimized Airflow: Maintains the precise pressure drop needed to keep the centrifugal pressure switch closed during the heating cycle

Reliable Combustion: Includes factory-spec gas burner orifices calibrated for specific BTU outputs

reducing maintenance requirements in hard water environments

Functional Devices RIB24C-FA Relay 321042-401 the 5412I is the officialThe Functional Devices RIB24C FA Relay is an enclosed 10A SPDT relay engineered for precision control in low voltage HVAC, building automation, and fire alarm systems. This professional grade pilot relay operates on a 24VAC DC polarized coil, making it an essential component for isolating circuits or handling dry contact switching in sensitive BAS controllers. With its NEMA 1 housing, this unit facilitates rapid field installation through a standard 1