Lennox 11W51 Limit Switch 322838-752 54" WC setpoint prevents compatibility

54" WC setpoint prevents compatibility issues and ensures system safety parameters are met

Flexible Scheduling: Provides up to 12 ON/OFF operations per day with minimum 30-minute intervals for superior control

The Weil McLain 560-528-980 Pilot Orifice is a precision-engineered OEM replacement part specifically calibrated for natural gas (NG) applications

How do I test if my TS121 sensor is faulty

Lennox 11W51 Limit Switch 322838-752 54" WC setpoint prevents compatibilityThe Lennox 11W51 Limit Switch is a critical safety component designed for precise thermal regulation within high efficiency residential heating systems. Operating with a 160 190F temperature range, this auto reset limit switch is normally closed and engineered to open the circuit at 190F to prevent heat exchanger damage and potentially hazardous conditions. Once the plenum temperature cools back to 160F, the 11W51 automatically resets, allowing the