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The current sensor is self-powered from the induced current of the monitored line
this model is designed for hot and chilled water
The Cleveland Controls AFS-271 is a professional-grade air pressure sensing switch designed for critical proving switch applications in HVAC and energy management systems
If the system cools down and the switch closes
verify that the switch closes when the vacuum reaches 0
Schneider Electric (Erie) VM3222 Valve Body Els PW 17895 The current sensor is self-poweredThe Schneider Electric Erie VM3222 Valve Body is a robust 1 2 inch NPT three way modulating zone valve engineered specifically for high precision control in closed hydronic systems. Designed for veterans in the field, this brass 3 way mixing valve features a 2. 0 Cv rating and is ideally suited for fan coil units, VAV reheat, and baseboard applications. The VM3222 utilizes PopTop technology, allowing for tool free actuator removal and simplified field
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