designed to withstand the extreme thermal cycling common in industrial ovens and furnaces

preventing premature wear on mechanical drives and enhancing overall HVAC system efficiency

Key Benefits Precise Thermal Protection: Features a fixed 185°F trip point to safeguard the heat exchanger from excessive thermal stress

NEMA 3R Protection: Weather-resistant housing allows for outdoor installation and protects against condensation

If your system uses a glowing silicon carbide or nitride igniter directly for the main burners

Lochinvar & A.O. Smith 100157702 Control 320819-301 designed to withstand the extremeThe Lochinvar & A. O. Smith 100157702 Control is a critical outdoor air reset control designed to optimize the performance of hydronic heating systems. Engineered for precision, this high efficiency boiler control board (compatible with Lochinvar Copper Fin and Solution series models CB045 through CB500) automatically modulates the system's water temperature based on real time ambient conditions. By adjusting the supply water setpoint, it prevents