Lochinvar & A.O. Smith 100109825 Thermostat 322057-301 veteran technicians should always verify

veteran technicians should always verify the final set points using a calibrated gauge set during system startup to ensure absolute precision

Always check your specific burner head configuration to confirm the sensor-to-amplifier match

ensuring that the pressure switch closes reliably to prevent lockout codes

and HS26-042-03 series units

Lochinvar & A.O. Smith 100109825 Thermostat 322057-301 veteran technicians should always verifyThe Lochinvar & A. O. Smith 100109825 Thermostat is a critical OEM replacement part designed for high performance residential water heaters and select commercial boiler applications. Engineered for precision thermal regulation, this Lower Residential TOD (Therm O Disc) thermostat ensures accurate temperature sensing and high limit protection within the gas train assembly or electric heating circuit. As a veteran grade HVAC replacement control, it