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Is the 1" NPT vent required to be piped away
it delivers reliable LBP/HBP (Low and High Back Pressure) operation across an evaporating temperature range of -35°C to 15°C
The kit is compatible with a wide range of Shipco 56J frame models
The sensor uses a patented monolithic encapsulation process in a stainless steel probe to prevent moisture from reaching the electrical components
Siemens Building Technology GRD221.1U Actuator 321894-709 Is the 1" NPT ventThe Siemens Building Technology GRD221. 1U Actuator is a specialized 120V fire and smoke damper actuator designed for critical life safety HVACR applications. As a veteran grade two position spring return actuator, it delivers 30 lb in of torque, ensuring reliable open close operation for smoke control and combination fire smoke dampers. Built to exceed the rigors of UL555 and UL555S standards, this unit provides a nominal 30 second drive time and a
