2 EDA-8000 Product/Technical Bulletin
A
pplication
The EDA-8000 is designed to regulate control air
dampers in HVAC systems. Typical applications
include:
●
positioning of D-1300 Series Dampers
●
return air, or exhaust dampers
●
face and bypass control
●
blade positioning for variable volume fans
Refer to damper manufacturer’s information to properly
size the damper and actuator. Return to normal
actuators are recommended for use with outdoor air
dampers.
O
peration
The EDA-8000 Electric Damper Actuator provides a
stall torque output of 100 in·lb with incremental control
of dampers. It can also be used in a variety of other
applications at 80 in·lb continuous load.
The EDA-8000 is used on dampers having externally
accessible 10 to 12 mm (0.394 to 0.472 inch) square
or 7/16 to 1/2 inch (11 to 12.5 mm) round shafts.
It is compatible with Johnson Controls D-1300
Dampers as a direct mount actuator. The EDA-8000
housing has additional mounting slots to aid adaptation
to unusual applications. Several kits are available to
solve virtually any mounting situation.
The EDA-8000 non-spring return actuator will drive the
damper through a full stroke cycle of 90° in
60 seconds.
In typical incremental operation, a controller provides
24 VAC to the Clockwise (CW) or Counterclockwise
(CCW) terminal on the actuator depending on the
desired movement of the damper. This signal causes
the motor to rotate in the proper direction and moves
the damper blades open or closed. When no control
signal is present, the actuator holds its position.
The actuator is energized as long as the 24 VAC signal
is present. Therefore, it is more efficient to pulse the
signal to the actuator, which will prevent excessive
drive time of the motor. The use of a controller and/or
software that provides a time out to remove the signal
at the end of rotation is preferred to leaving the signal
applied to the actuator at all times.
