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Verify high-side and low-side performance with the Lennox 79J07 Pressure Switch
and pool heaters with a capacity of up to 240
additional PVC fittings or plugs may be required depending on your specific installation requirements
ensuring the system remains hermetically tight during maintenance or extended operation
McDonnell & Miller 42S Controller 30067439-890 Verify high-side and low-side performanceThe McDonnell & Miller 42S Controller (Part Number 129302) is a critical float operated combination low water cut off (LWCO) and pump controller designed for residential, commercial, and industrial steam boilers. Engineered for systems with a separate water column, this steam boiler water level control features dual SPST snap action switches that provide reliable automatic reset functionality. The 129302 pump controller handles a maximum operating
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