The block temperature limit switch is engineered with a calibrated 350°F open and 250°F close setpoint

While this is a dedicated Armstrong gas furnace part

the BT1420016 features heavy-duty nichrome heating elements and an integrated limit control to prevent overheating

specifically within humidifier units and hydronic fan coils

Key Benefits for Technicians Optimized Head Pressure: Maintains consistent 350/225 PSI setpoints to ensure proper refrigerant flow in cooling mode during low ambient conditions

Daikin-McQuay 033177500 Motor 328140-751 The block temperature limit switchThe Daikin McQuay 033177500 Motor is a high performance OEM replacement motor designed for industrial and commercial HVACR applications. This 3 4HP 208 230V 1ph 1075RPM motor is a Permanent Split Capacitor (PSC) design, ensuring reliable torque and consistent airflow in demanding environments. Built to the 48Y frame specification, it features a 5 8 inch shaft and is engineered for seamless integration into McQuay and Daikin condenser fan or blower