Submittal Sheet Document No. A6V11692965 July 22, 2019 OpenAir® GRD Series Electronic Damper Actuators for UL Listed Fire/Smoke and Smoke Control Dampers 2-Position, 30-second Run Time, 15-second Spring Return Time Siemens Industry, Inc. Product Number Operating Voltage 3 - ft Plenum Cable EFL Capability Two Fixed Auxiliary 24 Vac ± 20%, 24 Vdc + 20% , - 10%, 120 Vac ± 10% , 230 Vac ± 10% , GRD121.1U● ● ● GRD126.1U● ● ● ● GRD221.1U ● ● ● GRD226.1U ● ● ● ● GRD321.1U ● ● ● GRD326.1U ● ● ● ● Technical Data Torque: 30 lb-in (3.4 Nm) (minimum) Stall Torque: 80 lb-in (9 Nm) (minimum) Run time for 90°: 30 seconds (nominal) Spring Return: 15 seconds (maximum) Nominal angle of rotation: 95° Operating voltage: 24 Vac ±20%/ 24Vdc+20%-10% 120 Vac ±10%/ 230 Vac ±10% CAUTION: Continuous use at voltages above the recommended tolerances may damage the actuator. Power Consumption: Running Holding GRD12x.1U ~14 VA/8W ~4VA/2W GRD22x.1U: ~12 VA ~4VA GRD32x.1U: ~12 VA ~4 VA Damper shaft size: 1/2-inch (12,7 mm) round Damper shaft length, minimum: 1.4-inch (36 mm) min. length Agency listings: UL60730 cUL CSA 60730 CE conformity for Residential, Commercial, and Industrial environments. Australian RCM conformity Ambient temperature, operating: 0°F to 140°F (–18°C to 60°C), 350°F (177°C) one time per UL555S Ambient temperature, storage/transport: -40°F to 158°F (-40°C to 70°C) Ambient humidity (non-condensing): Maximum 95% rh non-condensing Plenum-rated cable: 400°F (200°C) Enclosure: NEMA 1/IP40 Housing material: Plenum-rated plastic Pre-cabled connection: 3 ft (0.9m) 19/30 strand 18 GA Dimensions (Approximate): 8.5" H × 3.5" W × 3.0" D (215.9 mm H ×88.9 mm W×76.2 mm D) Weight: 4 lbs. (1.8 kg) Country of Origin USA Description The OpenAir direct-coupled, 2-position, spring return electronic damper actuators are UL listed for smoke control dampers or for combination fire/smoke rated dampers. Actuators are designed to operate reliably in smoke control systems requiring Underwriter’s Laboratories, Inc. UL555/555S rating when tested as an assembly with the damper and will meet requirements of UBC for 30-second opening and 15-second closing at 350°F (177°C). Features • Optional built-in auxiliary switches with fixed switch points at 5° and 85° rotation. • Built-in Electronic Fusible Link (EFL) capability with four temperature ratings; 165°F, 212°F, 250°F, and 350°F • Reversible, fail-safe spring return • Plenum-rated • Pre-cabled • 30-second operation at rated torque, temperature, and voltage • Fixed Dual End Switches 24 Vdc, 24 Vac to 250 Vac 6A resistive 2FLA/12 LRA SPST Fixed 5° and 85° Accessories Electronic Fuse Link (24 Vac) ASK791.165 165°F (74°C) ASK791.212 212°F (100°F) ASK791.250 250°F (121°C) ASK791.350 350°F (177°C) OpenAir® GRD Electronic Damper Actuators for UL Listed Fire/Smoke and Smoke Control Dampers Submittal Sheet Document No. A6V11692965 July 22, 2019 Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced. OpenAir is a registered trademark of Siemens Schweiz AG. Other product or company names mentioned herein may be the trademarks of their respective owners. © 2019 Siemens Industry, Inc. Siemens Industry, Inc. Smart Infrastructure 1000 Deerfield Parkway Buffalo Grove, IL 60089 USA + 1 847-215-1000 Your feedback is important to us. If you have comments about this document, please send them to sbt_technical.editor.us.sbt@siemens.com Document No. A6V11692965 Printed in the USA Page 2 Maintenance The National Fire Protection Association NFPA 92A Standard for Recommended Practice for Smoke-Control System and UL 864 Standard for Control Units and Accessories for Fire Alarm Systems, require weekly self-test for dedicated smoke control equipment used in a smoke control system. The National Fire Protection Association NFPA 72 Standard for National Fire Alarm Codes states that all life safety systems are to be functionally checked at least annually. The GRD actuator is designed such that no special cycling during long-term holding is required. The GRD actuator complies with the AMCA Standard 520 testing revision. Wiring Diagrams NOTE: Actuators may be connected in parallel. Power consumption must be observed. Figure 1. Figure 2 Figure 3. 24 Vac/dc. 120 Vac. 230 Vac. NOTE: Both sets of contacts are open when the actuator is between 5° and 85° Switch Wire Color Switch Makes Switch Breaks 5° Gray < 5° > 5° 85° Yellow > 85° < 85° Electronic Fusible Link Figure 4. GRD Actuator and EFL. Figure 5. GRD Series Damper Actuator and Mounting Bracket Dimensions in Inches (Millimeters). Next >