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Siemens OpenAir GND Series Technical Instructions

Electronic damper actuator.
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OpenAir™ GND Series Electronic Damper Actuator
UL Listed Fire/Smoke and Smoke Control Dampers
2-Position, 15-second Run Time,
15-second Spring Return Time
N474
Description
Features
Application
The OpenAir™ direct coupled, fast-acting, two-position, spring return electronic actuators
are available as 24 Vac/dc, 120 Vac, and 230 Vac models. They are intended for use on
UL listed smoke control dampers and combination fire/smoke rated dampers.
Optional built-in auxiliary switches: Fixed switch points at 5° and 85 ° rotation.
Optional built-in Electronic Fusible Link (EFL) capability with four temperature
ratings: 165°F (74°C), 212°F (100°C), 250°F (121°C), 350°F (177°C).
Reversible fail-safe spring return.
All metal housing.
Pre-cabled Teflon® insulated lead wires.
Fifteen-second operation at rated torque, temperature and voltage.
This actuator is used for the control of dampers requiring up to 53 lb-in (6Nm) driving
torque. It is intended for control of UL listed smoke control dampers and combination
fire/smoke HVAC dampers. This actuator is designed to meet the 2002 revisions to the
UL 555/555S and the AMCA Standard 520 specifications.
Technical Instructions
Document No. 155-746
Siemens Building Technologies, Inc.
EA GND-1
March 17, 2005

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   Summary of Contents for Siemens OpenAir GND Series

  • Page 1

    It is intended for control of UL listed smoke control dampers and combination fire/smoke HVAC dampers. This actuator is designed to meet the 2002 revisions to the UL 555/555S and the AMCA Standard 520 specifications. Technical Instructions Document No. 155-746 EA GND-1 March 17, 2005 Siemens Building Technologies, Inc.

  • Page 2

    WARNING CAUTION: Service If the actuator is inoperative, replace the unit. Page 2 of 7 OpenAir GND Series Electronic Damper Actuator UL Listed Fire/Smoke Control Dampers Standard version Two auxiliary switches Fire and smoke shaft adapter Assembled in USA Bulk pack 10...

  • Page 3

    OpenAir GND Series Electronic Damper Actuator UL Listed Fire/Smoke Control Dampers Operating voltage Specifications Power supply Frequency Power consumption Power Consumption Running torque Function Stall torque (minimum) Torque reduction at elevated temperature Runtime for 90° closing (on power loss) with spring return...

  • Page 4

    Installation Refer to the installation instructions for detailed guidelines. (See 129-402) Page 4 of 7 OpenAir GND Series Electronic Damper Actuator UL Listed Fire/Smoke Control Dampers Figure 1. CAUTION: Read and carefully follow the Installation Instructions to avoid equipment damage.

  • Page 5

    OpenAir GND Series Electronic Damper Actuator UL Listed Fire/Smoke Control Dampers Wiring All wiring must conform to NEC and local codes and regulations. Wire Designations 24 Vac/dc 120 Vac BROWN (Line) 230 Vac BLUE (Neutral) Auxiliary Switches YELLOW Siemens Building Technologies, Inc.

  • Page 6

    When ordered, GND Electronic Fusible Link models come pre-wired for coupling with EFL sensor. Page 6 of 7 OpenAir GND Series Electronic Damper Actuator UL Listed Fire/Smoke Control Dampers Molex connector for use with Siemens EFL Figure 6. Figure 7.

  • Page 7

    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. Teflon is a registered trademark of DuPont. OpenAir is a registered trademark of Siemens Building Technologies.

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