FSAF120A US Belimo Actuator Fire & Smoke

Application:

For two position control of UL555S rated dampers in
HVAC. Actuator sizing should be done in accordance with
the damper manufacturers specifications.

The actuator is mounted directly to a damper shaft or jackshaft
3/8” to 1.05” in diameter by means of its universal clamp.
A crankarm and mounting brackets are available if the actuator
cannot be direct coupled to the jackshaft or damper shaft.

Square footage of damper operated will depend on make
and model of damper. Typically 12 sq.ft. minimum up to
24 sq.ft maximum will be operated for UL555S applications.

Operation:

The FSAF series actuators provide true spring return
operation for reliable fail-safe application and positive closeoff
on UL555S dampers. The spring return system provides
constant torque to the damper with, and without, power
applied to the actuator.

The FSAF series provides 95° of rotation and is provided with
a graduated position indicator showing 0 to 95°. The FSAF
has a manual positioning mechanism which allows the setting
of any damper position within its 95° of rotation.

The actuator is shipped in the zero fail-safe position to provide
automatic compression against damper gaskets for tight
shut-off. When power is applied, the manual mechanism is
released and the actuator drives toward the
open position where it stops rotating.

The manual override can also be released physically by the
use of a crank supplied with the actuator.

(OLD p/n FSAF120 US)