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When troubleshooting ignition failure or short-cycling in Lochinvar Crest (FBN/FBL 2500-5000)
This part serves as the official Weil McLain replacement for the AT140B1297
reducing energy waste and optimizing system performance for consistent comfort and operational savings
providing contractors with a direct-fit solution that maintains OEM specifications for airflow and thermal safety
this unit features a single pole double throw (SPDT) contact function
Johnson Controls 4683-TTM-1F Repeater 318518-761 When troubleshooting ignition failure orThe Johnson Controls 4683 TTM 1F Repeater is a critical component for maintaining signal integrity across extensive N2 Trunk networks. Engineered to operate on 115V AC, this RS 485 network repeater effectively doubles the maximum allowable distance for communication, allowing signals to travel an additional 4,000 feet. It is designed to overcome physical segment limitations by enabling the addition of up to 32 additional unit loads per MS TP bus