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

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

matching the 115V electrical footprint and 3

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

this component is calibrated to close at 31

Lochinvar & A.O. Smith 100157702 Control 320819-301 NEMA 3R Protection: Weather-resistant housingThe 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