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Always check the primary voltage matching before energizing
Does this unit require a separate power supply
Multi-Voltage Compatibility: Operates efficiently at both 208V and 230V
For contractors installing ASSE 1017 certified components
McDonnell & Miller 193-A-7B Controller R-22 Always check the primary voltageThe McDonnell & Miller 193 A 7B (Part Number 164500) is a robust, float operated combination low water cut off and pump controller specifically engineered for commercial and industrial steam boiler applications. Designed to handle a maximum pressure of 150 PSI, this unit integrates a No. 7B potentiometer switch, which provides a 135 ohm proportional control signal to maintain a constant boiler water level by modulating the feed valve. Unlike standard
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