Lochinvar & A.O. Smith 100093804 Door 30067439-890 Standard M520 models are suitable

Standard M520 models are suitable for natural

and electric duct furnaces

2 Cv includes a built-in characterizing disk to ensure a true equal percentage flow for high-precision temperature control

4 and CSA 6

The E2 series is specifically enhanced for low-pressure steam and gas applications

Lochinvar & A.O. Smith 100093804 Door 30067439-890 Standard M520 models are suitableThe Lochinvar & A. O. Smith 100093804 Manifold Door Assembly is a critical OEM replacement component designed for Natural Gas (NG) water heaters and commercial heating systems. This TC Ignition Project kit integrates the burner access door with an optimized thermocouple and igniter setup to ensure precise gas flow management and consistent pilot performance. As a veteran technician knows, maintaining the integrity of the combustion chamber seal is non