Siemens Building Technology GRD226.1U Actuator
The Siemens OpenAir GRD226.1U is a heavy-duty fire and smoke damper actuator engineered for life safety systems requiring high-reliability fail-safe performance. Operating at 120V AC, this spring return actuator provides 30 lb-in of torque, making it a standard choice for two-position control of small to medium combination fire and smoke dampers. Designed to meet stringent UL555 and UL555S safety standards, the GRD226.1U features a 30-second drive time for system activation and a rapid 15-second mechanical closure upon power loss. This unit comes standard with dual auxiliary switches, providing fixed status feedback at 5° and 85° for precise end-position monitoring within the HVAC control loop. Its robust design includes an integrated electronic fusible link (EFL) capability and a NEMA 1 rated housing, ensuring dependable operation in air-handling spaces during critical fire events. For contractors, the self-centering shaft adapter simplifies mounting, reducing installation time while maintaining a secure, slip-free connection to the damper shaft.
Key Benefits for Technicians:- UL555S Compliance: Fully listed for smoke control systems and combination fire/smoke applications.
- Integrated Auxiliary Switches: Built-in fixed switches at 5° and 85° eliminate the need for external end-switch kits.
- High-Speed Fail-Safe: Mechanical spring return ensures positive closure in under 15 seconds during emergency power-off scenarios.
- Direct Drive Mounting: Features a self-centering shaft adapter compatible with standard damper shafts for rapid field replacement.
- Plenum Rated Cable: Equipped with a 3-foot plenum-rated cable to simplify wiring in air distribution zones.
What is the maximum torque capacity of the GRD226.1U?
The GRD226.1U is rated for 30 lb-in (3.4 Nm) of torque, specifically optimized for smaller fire smoke dampers where excessive torque could damage the linkage.
Does this unit require a specific electronic fusible link?
Yes, this actuator is compatible with the ASK791 series electronic fusible links (EFLs), allowing for localized thermal protection at various temperature ratings like 165°F or 250°F.
Can the rotation direction be reversed?
The actuator is reversible by flipping the unit; the mechanical spring return direction depends on which side of the actuator faces the damper shaft during installation.
This item is not eligible for free shipping.
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.
Original: $196.21
-65%$196.21
$68.67Siemens Building Technology GRD226.1U Actuator
The Siemens OpenAir GRD226.1U is a heavy-duty fire and smoke damper actuator engineered for life safety systems requiring high-reliability fail-safe performance. Operating at 120V AC, this spring return actuator provides 30 lb-in of torque, making it a standard choice for two-position control of small to medium combination fire and smoke dampers. Designed to meet stringent UL555 and UL555S safety standards, the GRD226.1U features a 30-second drive time for system activation and a rapid 15-second mechanical closure upon power loss. This unit comes standard with dual auxiliary switches, providing fixed status feedback at 5° and 85° for precise end-position monitoring within the HVAC control loop. Its robust design includes an integrated electronic fusible link (EFL) capability and a NEMA 1 rated housing, ensuring dependable operation in air-handling spaces during critical fire events. For contractors, the self-centering shaft adapter simplifies mounting, reducing installation time while maintaining a secure, slip-free connection to the damper shaft.
Key Benefits for Technicians:- UL555S Compliance: Fully listed for smoke control systems and combination fire/smoke applications.
- Integrated Auxiliary Switches: Built-in fixed switches at 5° and 85° eliminate the need for external end-switch kits.
- High-Speed Fail-Safe: Mechanical spring return ensures positive closure in under 15 seconds during emergency power-off scenarios.
- Direct Drive Mounting: Features a self-centering shaft adapter compatible with standard damper shafts for rapid field replacement.
- Plenum Rated Cable: Equipped with a 3-foot plenum-rated cable to simplify wiring in air distribution zones.
What is the maximum torque capacity of the GRD226.1U?
The GRD226.1U is rated for 30 lb-in (3.4 Nm) of torque, specifically optimized for smaller fire smoke dampers where excessive torque could damage the linkage.
Does this unit require a specific electronic fusible link?
Yes, this actuator is compatible with the ASK791 series electronic fusible links (EFLs), allowing for localized thermal protection at various temperature ratings like 165°F or 250°F.
Can the rotation direction be reversed?
The actuator is reversible by flipping the unit; the mechanical spring return direction depends on which side of the actuator faces the damper shaft during installation.
This item is not eligible for free shipping.
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.
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Description
The Siemens OpenAir GRD226.1U is a heavy-duty fire and smoke damper actuator engineered for life safety systems requiring high-reliability fail-safe performance. Operating at 120V AC, this spring return actuator provides 30 lb-in of torque, making it a standard choice for two-position control of small to medium combination fire and smoke dampers. Designed to meet stringent UL555 and UL555S safety standards, the GRD226.1U features a 30-second drive time for system activation and a rapid 15-second mechanical closure upon power loss. This unit comes standard with dual auxiliary switches, providing fixed status feedback at 5° and 85° for precise end-position monitoring within the HVAC control loop. Its robust design includes an integrated electronic fusible link (EFL) capability and a NEMA 1 rated housing, ensuring dependable operation in air-handling spaces during critical fire events. For contractors, the self-centering shaft adapter simplifies mounting, reducing installation time while maintaining a secure, slip-free connection to the damper shaft.
Key Benefits for Technicians:- UL555S Compliance: Fully listed for smoke control systems and combination fire/smoke applications.
- Integrated Auxiliary Switches: Built-in fixed switches at 5° and 85° eliminate the need for external end-switch kits.
- High-Speed Fail-Safe: Mechanical spring return ensures positive closure in under 15 seconds during emergency power-off scenarios.
- Direct Drive Mounting: Features a self-centering shaft adapter compatible with standard damper shafts for rapid field replacement.
- Plenum Rated Cable: Equipped with a 3-foot plenum-rated cable to simplify wiring in air distribution zones.
What is the maximum torque capacity of the GRD226.1U?
The GRD226.1U is rated for 30 lb-in (3.4 Nm) of torque, specifically optimized for smaller fire smoke dampers where excessive torque could damage the linkage.
Does this unit require a specific electronic fusible link?
Yes, this actuator is compatible with the ASK791 series electronic fusible links (EFLs), allowing for localized thermal protection at various temperature ratings like 165°F or 250°F.
Can the rotation direction be reversed?
The actuator is reversible by flipping the unit; the mechanical spring return direction depends on which side of the actuator faces the damper shaft during installation.
This item is not eligible for free shipping.
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.
