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Common Questions Is the ZG-NM4 compatible with older NM actuators
Technicians often source this replacement ECO lead when troubleshooting intermittent gas valve dropouts or during a full thermostat and safety pilot assembly overhaul
Critical for maintaining system efficiency and longevity
Each package contains a 2-pack of flame sensors
the 151755 part is designed to fit several current and legacy Reznor unit heater models
Weil McLain 381-356-577 Temperature Sensor Els PW 17895 Common Questions Is the ZG-NM4Keep your heating systems running at peak performance with the genuine Weil McLain 381 356 577 Temperature Sensor. Designed specifically as a boiler supply temperature sensor, this 12K ohm NTC thermistor provides critical feedback to the control module, ensuring high accuracy water trim monitoring and safe operation. This direct replacement component features a 1 2" NPT threaded connection, making it compatible with a wide range of popular hydronic