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It is a direct fit for Williams Automatic Blower 2102 and Blower 2901
The 30sPP cycle clears the combustion chamber of any residual gas and verifies the pressure switch state before the intermittent pilot begins the sparking process
This unit integrates seamlessly with an A350 temperature control
How do I know if I need to replace my pressure switch
McDonnell & Miller 94-A Pump Controller Refrigerant It is a direct fitThe McDonnell & Miller 94 A Pump Controller (Part Number 165500) is a heavy duty combination low water cut off and liquid level control engineered specifically for commercial and industrial steam boilers. Rated for a maximum pressure of 250 PSI, this float operated unit provides reliable burner protection and automatic feed pump cycling to maintain consistent water levels regardless of steaming capacity. Unlike standard models, the 94 A features 1 1
