Exact OEM Fit: Specifically sized at 16

Automatic Reset Functionality: Restores system operation automatically after the unit cools

Automated Operation: The auto reset mechanism ensures the system resumes normal operation once temperatures descend to 170°F

By replacing the zone valve stem and paddle assembly rather than the brass body

Key Benefits OEM Compatibility: Replaces multiple previous part numbers including TRR1557 and TRR1322

Lochinvar & A.O. Smith 100208495 Panel Mount Exact OEM Fit: Specifically sizedThe Lochinvar & A. O. Smith 100208495 Relay Board Panel Mount is a critical electrical control component designed for high demand hydronic and domestic hot water systems. Running on a standard 24Vac coil, this panel mount relay provides reliable switching for essential peripheral hardware, including system pumps, fans, and auxiliary blowers. Rated for heavy duty cycling, the 100208495 ensures precise voltage distribution, preventing intermittent