Siemens Building Technology GMA121.1U Actuator 320788-702 Common Questions: How do I

Common Questions: How do I set the valve to automatic mode

Using this genuine Johnson Controls replacement part ensures full compatibility with the factory stuffing box and maintains the valve's original leakage class of 0

Built with a class B insulation system

making it ideal for maintaining food safety and regulatory compliance in cold storage environments

making it ideal for R-410A and other high-pressure HVAC applications

Siemens Building Technology GMA121.1U Actuator 320788-702 Common Questions: How do IThe Siemens GMA121. 1U is a heavy duty spring return damper actuator engineered for high demand HVACR applications requiring reliable fail safe operation. Operating on 24VAC DC, this direct coupled actuator delivers a robust 62 lb in torque (7 Nm), making it an ideal choice for managing return air, mixed air, and exhaust dampers in both constant and variable air volume systems. Built with a rugged, die cast aluminum NEMA 1 housing, this unit ensures