APPLICATION GUIDE OpenAir Damper Actuator TM Best Practices usa.siemens.com/openair usa.siemens.
Application and Installation Best Practices This guide covers installation best practices for Roof Top Units (RTU), Fire and Smoke and Variable Air Volume (VAV) applications. In rooftop units, the damper actuator controls the economizer, or outside air damper. This application would potentially require a spring return, and the torque value of that actuator is going to vary based on the features and the size of the economizer or damper.
Rooftop Units (RTU) Rooftop units are a popular application and can be seen on the top of buildings. Rooftop Unit issues that directly relate to the damper actuators are seen in the Economizer or Outside Air Damper space. An economizer is a style of damper for when the outdoor conditions present themselves and allow for free cooling to the unit.
Fire and Smoke The most effective fire protection plans includes three key factors: detection, suppression and containment which require both an active and a passive fire protection system. Active fire protection includes all systems designed to suppress or extinguish fire once it has started, as well as aid in the evacuation of occupants. Passive fire protection is designed to prevent smoke, toxic gases, and fire from spreading, and by compartmentalizing fire.
Variable Air Volume (VAV) The way a typical variable air volume (VAV) application works is that the rooftop unit provides airflow with a constant temperature. The damper actuator in each VAV terminal box controls the temperature in its zone by opening and closing a damper. Another potential pain point in VAV applications is incorrect installation of the actuator to the VAV terminal unit.
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