Integrated Safety: Factory-installed 12A49 vent limiter ensures compliance with indoor safety codes without additional copper vent lines

the Carrier LH33WP007 ensures precise timing and burner operation

or a failing indoor blower motor

While the 325-L series is often used for indoor piping systems

Universal Compatibility: Operates across a wide voltage range (24V-240V)

Lochinvar & A.O. Smith 100277838 Board 323080-701 Integrated Safety: Factory-installed 12A49 ventFor veteran technicians servicing high efficiency systems, the Lochinvar & A. O. Smith 100277838 Connection Board is a critical OEM component designed for low voltage control integration. Specifically engineered for FTXL and FTX fire tube condensing boilers (models 400 850 N L), this board acts as the central hub for electrical component communication, ensuring the host SMART SYSTEM control operates with maximum precision. Whether you are managing a