McDonnell & Miller 42S HD Controller Refrigerant Engineered as the direct replacement Engineered as the direct replacement for the legacy J10 809 Does the 70392 require a minimum pressure to operate 7A at 240VAC Broad Compatibility: Suitable for steam boilers of any steaming capacity requiring combination low water cut off and pump control
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McDonnell & Miller 42S-HD Controller Refrigerant Engineered as the direct replacement