provided the appropriate thermal element and cartridge are installed

The most frequent causes are voltage spikes and poorly conditioned power

Universal Compatibility: Serves as the primary replacement for MA-6501 and MA-7501 series

feature internal threads on the valve body rather than external

this assembly includes the collector box for simplified integration and replaces older legacy part numbers including EXC1086

Lochinvar & A.O. Smith 100093859 Assembly R-410A provided the appropriate thermal elementThe Lochinvar & A. O. Smith 100093859 Manifold Door Assembly is a high precision OEM replacement engineered for high efficiency gas fired boilers and residential FVIR water heaters. As a veteran grade burner door assembly, this kit is essential for maintaining the sealed combustion chamber's integrity, ensuring optimal thermal efficiency and safe manifold pressure regulation. The assembly integrates a robust door port designed to withstand high