Brochure

4
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. Passive fire protection systems strengthen the
effectiveness of active systems by facilitating occupant
evacuation (protect people) and minimizing property
damage (protect property)
Siemens damper actuators fall under passive fire protection,
and are designed to open/close when the electronic fusible
link (EFL), or temperature sensing device senses an increase
in heat. With an increase in heat, the EFL cuts power to the
actuator and the mechanical spring drives the actuator to the
correct open/close position based on the system design.
For Fire, Smoke and combination fire and smoke dampers,
ALL of these actuators must be installed directly by the OEM
damper manufacturer, to ensure the proper installation per
UL555/UL555S codes, so there won’t be handling swapping
out the actuators in the field.
Siemens offers four torque sizes and ground up designs.
OpenAir Fire and Smoke damper actuators are designed to
reduce risk and deliver better life safety performance with the
only actuator that uniquely integrates with our patented
electronic fusible link that is simple and connects easily.
These actuators come with a 5-year warranty, are made in the
USA and have been listed with the California Fire Marshall.
While maintaining a compact design, this line ranges from
20 lb-in, all the way up to 200 lb-in. The right device matters
to operate a fire and smoke damper system, not only is it
important to meet the UL555 and UL555S standards, it is
imperative that the devices used mitigate any risk to life
safety, are long-lasting and reliable when needed.
Fire and Smoke
Fire and Smoke applications:
A device installed within an HVAC system, that closes automatically upon the detection of heat in accordance
with UL standard 555 and 555S.
A common issue associated with fire and smoke damper and actuator installations is the lack of periodic
cycle testing done on-site after installation, which is required per UL code.
Solved by
the manual override button located on the Siemens Electronic Fusible Link,
which will simulate the fusible link “tripping” or hitting a temperature limit and
cause the actuator to fail-close/open.
Damper Actuator:
Drives the damper to OPEN or CLOSE. Must be qualified along
with the damper and tested to UL Standards 555 and 555S.
Electronic Fusible Link (EFL):
A heat responsive device cuts power to the electronic damper
actuator, and the actuator’s spring return mechanism closes
the damper when it reaches a certain temperature level.
All smoke and combination fire-smoke dampers are required to have an actuator.
Fire dampers can also be supplied with an actuator, but it is not required and is relatively rare.