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Siemens OpenAir GND Series Technical Instructions
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Technical InstructionsDocument No. 155-746EA GND-1March 17, 2005OpenAir™ GND Series Electronic Damper ActuatorUL Listed Fire/Smoke and Smoke Control Dampers2-Position, 15-second Run Time,15-second Spring Return TimeN474Description The OpenAir™ direct coupled, fast-acting, two-position, spring return electronic actuatorsare available as 24 Vac/dc, 120 Vac, and 230 Vac models. They are intended for use onUL listed smoke control dampers and combination fire/smoke rated dampers.Features • Optional built-in auxiliary switches: Fixed switch points at 5° and 85 ° rotation.• Optional built-in Electronic Fusible Link (EFL) capability with four temperatureratings: 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.Application This actuator is used for the control of dampers requiring up to 53 lb-in (6Nm) drivingtorque. It is intended for control of UL listed smoke control dampers and combinationfire/smoke HVAC dampers. This actuator is designed to meet the 2002 revisions to theUL 555/555S and the AMCA Standard 520 specifications.Siemens Building Technologies, Inc. |
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