McDonnell & Miller 61-HD Low Water Cut Off Els PW 17895 Optimal Airflow: The 29-degree blade

Optimal Airflow: The 29-degree blade pitch is optimized for maximum heat dissipation across the coils

Easy Commissioning: Minimal tools required for installation and calibration

the air-fuel mixture is fixed by the venturi design and does not require manual shutter adjustment

7mA minimum flame sense current for high accuracy

McDonnell & Miller 61-HD Low Water Cut Off Els PW 17895 Optimal Airflow: The 29-degree bladeThe McDonnell & Miller 61 HD (Part Number 140300) is a heavy duty mechanical low water cut off designed specifically for low pressure steam boiler applications. This head mechanism serves as a direct replacement component for Series 61 controllers, facilitating reliable burner circuit interruption when water levels drop below the safe line. Rated for a maximum steam pressure of 20 PSI, the 61 HD utilizes a high buoyancy float operated mechanism to