Lochinvar & A.O. Smith 100173749 Door 318518-761 the VS2517 must be paired

the VS2517 must be paired with a compatible high-temperature actuator (typically the AH series) to ensure the paddle and internal seals operate within their specified thermal limits

this 100111335 kit provides a direct-fit solution

Engineered for precision and thermal stability

Verify the flow arrow on the Emerson Alco 060252 shell to ensure proper orientation toward the compressor to maintain filtration efficiency and prevent debris bypass

Lochinvar & A.O. Smith 100173749 Door 318518-761 the VS2517 must be pairedThe Lochinvar & A. O. Smith 100173749 Heat Exchanger Access Door is a critical combustion chamber component engineered for Lochinvar Knight WB and SNA SLA series boilers. As a veteran grade OEM replacement part, this access door (WB model) ensures a high pressure seal for the heat exchanger assembly, facilitating essential annual maintenance and internal fire tube cleaning. Built with heavy duty materials to withstand high thermal stress, it maintains