Lochinvar & A.O. Smith 100277802 Gasket 321894-708 347318-753-CBP is the direct replacement

347318-753-CBP is the direct replacement for 339707-753-CBP

this SmartX actuator is the official cross-reference and functional replacement for legacy models including MA-6501-502 and MA40-AF120-502

from pilot loads to full demand

What type of pushbutton is required for the manual reset

Automatic Reset: The auto reset mode ensures the system returns to normal operation once the thermal threshold is cleared without manual intervention

Lochinvar & A.O. Smith 100277802 Gasket 321894-708 347318-753-CBP is the direct replacementThe Lochinvar & A. O. Smith 100277802 Gasket is a critical gas air manifold seal engineered specifically for high efficiency commercial boilers and water heaters. As a direct OEM replacement part, this gasket ensures a combustion tight seal between the blower assembly and the burner manifold, preventing hazardous gas leaks and maintaining precise fuel to air ratios. Given the thermal stresses in modulating condensing systems, this high temperature