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the MA-305 series is not position-sensitive
Direct Cross-Reference: Replaces multiple legacy part numbers including 1054636 and 1065188 without wiring modifications
an AGC series model or an external switch kit should be utilized
For professional hydronic systems
Does the bracket include mounting screws
Lennox 80W51 Pressure Switch 326058-758 the MA-305 series is notThe Lennox 80W51 Pressure Switch is an essential safety component designed for Lennox furnaces and higher efficiency HVAC systems. This differential pressure switch is factory calibrated to a 0. 55" w. c. set point, ensuring reliable monitoring of the combustion blower and venting pressure. As a genuine OEM Lennox replacement part, this switch precisely detects the negative pressure required to safely initiate the furnace ignition sequence, preventing
