Key Benefits Fixed Thermal Calibration: Precision-engineered to open at 195°F and close at 65°F for reliable high-limit protection

common in most HVAC and industrial automation panels

ensuring consistent flame detection and preventing nuisance lockout codes during high-demand heating cycles

The RA-911 serves as a remote visual annunciator

technicians prioritize this assembly for its specific resistance tolerances and durable construction

Lochinvar & A.O. Smith 100109202 Burner 318172-701 Key Benefits Fixed Thermal Calibration:The Lochinvar & A. O. Smith 100109202 Burner Assembly is a factory spec OEM replacement designed for high efficiency performance in Natural Gas FVIR water heaters. As a veteran grade NAT FV burner assy #33 ORF, this component features a precision machined #33 orifice to ensure the exact BTU output and stoichiometric air gas mixture required for Flammable Vapor Ignition Resistant (FVIR) systems. Constructed from heavy duty aluminized steel, this