Siemens Building Technology GDE131.1U Actuator

The Siemens GDE131.1U OpenAir damper actuator is a robust, non-spring return (NSR) solution designed for high-performance control in building automation systems. Delivering 44 lb-in (5 Nm) torque, this rotary actuator is specifically engineered for floating control (3-position) applications, making it a staple for managing airflow in small to medium-sized dampers and VAV boxes. Working on a 24 VAC supply, it maintains a low power consumption of just 2.3 VA, optimizing energy efficiency across large-scale commercial installs.

Field technicians will appreciate the compact design and manual override capability, allowing for easy positioning during commissioning or power loss without extra tools. The 90-second run time at 60 Hz ensures steady response times, while the IP54-rated NEMA 2 enclosure provides industrial-grade protection against dust and moisture. With its direct-coupled mounting, the GDE131.1U actuator eliminates the need for complex linkages, fitting 3/8" to 5/8" shafts securely to ensure reliable, maintenance-free operation in demanding HVACR environments.

Key Benefits:

• Precision Airflow Management: The 3-position floating control allows for accurate damper positioning without the drift common in lower-tier motors.
• Simplified Field Installation: Features a direct-coupled mounting system and pre-cabled 3-foot leads to reduce labor time on the job site.
• Energy Efficient Performance: Synchronous motor technology consumes only 2.3 VA, lowering the burden on 24V Class 2 transformers.
• Industrial Durability: Built with a NEMA 2 enclosure and rated for 100,000 full-stroke cycles to ensure long-term reliability in AHUs and ductwork.
• Manual Override: A slide-out red knob allows for instant manual adjustment for quick troubleshooting and testing.

Common Questions:

How do I set the rotation direction on the GDE131.1U?
The direction of rotation (clockwise or counter-clockwise) is determined by the wiring configuration of the floating signal from your controller. Refer to the standard Siemens wiring diagram for Y1 and Y2 signal routing.

Is this actuator suitable for fire and smoke applications?
No, this is a non-spring return control actuator. For safety-critical fire and smoke dampers, you must use a UL555S certified spring-return model designed specifically for life safety applications.

Can I use this for modulating 0-10V control?
The GDE131.1U is dedicated to floating control. If your system requires a 0-10V or 4-20mA modulating signal, you will need the GDE161.1U model from the same OpenAir series.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.