The unit features an integrated override button

Is the coil suitable for outdoor installation

Does this fit Spark Ignition or Hot Surface Ignition models

Is this TXV compatible with R-22 systems

avoiding inverted installations

Lochinvar & A.O. Smith 100108828 Gas Valve 321042-401 The unit features an integratedThe Lochinvar & A. O. Smith 100108828 Gas Valve is a critical replacement component engineered for high efficiency hydronic boilers and commercial water heaters. This 120V gas valve operates with a 1 2 inch NPT inlet outlet configuration and is factory calibrated for natural gas applications at a 4. 0" W. C. manifold pressure. Designed to integrate seamlessly with Lochinvar Knight and A. O. Smith Cyclone series units, this valve ensures precise gas