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the external high-voltage ignition cable may need to be reused or sourced separately depending on the boiler model
If the switch keeps tripping
reducing the need for frequent V-belt tensioning
If the ceramic insulator is cracked or the rod is heavily pitted
offering superior dielectric strength and thermal resistance in high-ambient environments
McDonnell & Miller AP-3-SS-J Probe Rod the external high-voltage ignition cableThe McDonnell & Miller AP 3 SS J (Part Number 176231) is a heavy duty, 39 inch (991mm) stainless steel probe rod designed for high precision liquid level sensing in commercial and industrial boiler applications. Engineered for compatibility with conductance type level controls, this ambient probe provides the critical conductive path required for low water cut off (LWCO) and pump control sequencing. In the field, its 300 series stainless steel