the coil on the KZ-4000-5 is specifically designed for 120 Vac operation

This kit is designed for 2-Way Normally Open

secure fit during installation

and 325-9 Series regulators

Is this compatible with both 115V and 230V systems

Lochinvar & A.O. Smith 100289450 O-Ring R-407A the coil on the KZ-4000-5The Lochinvar & A. O. Smith 100289450 O Ring is a critical sealing component designed for high performance gas valve assemblies and burner systems. As an OEM gas valve gasket replacement, this heavy duty sealing ring is engineered from advanced synthetic rubber to provide a precision fit across various hydronic heating platforms. This specific part number, 100289450, serves as the direct replacement for 100288891, ensuring backward compatibility for