Johnson Controls EDA-2040 Installation Manual page 4

4. Use a punch to mark the position of the shoulder
washer on the mounting surface. The shoulder
washer should be at the center of the slot to
allow actuator movement during rotation.
(See Figure 6.)
U P
D PT -2015-0
(-) LO
Shoulder
Washer
Figure 6: Anti-rotation Screw with
Shoulder Washer
5. Drill a hole into the mounting surface through the
mark using a drill and 5/32 in. (4 mm) bit.
6. Position the actuator so the shoulder washer is
over the hole; insert the anti-rotation screw, as
shown in Figure 6, and tighten against the
washer.
7. Secure the coupler to the shaft evenly by using
a 1/8 in. hex key to bottom each coupler hex set
screw against the damper shaft.
Note: Maintain 1/8 in. clearance between the
mounting surface and actuator while
tightening the hex socket screws.
(See Figure 5.)
8. After bottoming each hex set screw against the
damper shaft, continue turning the hex key until
obtaining approximately a 30 degree deflection
of the wrench as illustrated in Figure 7
(40 to 65 in·lb). Repeat for the other hex set
screw.
!
CAUTION: Equipment Damage Hazard.
Do not remove anti-rotation
screw and force damper blade
closed using the actuator. This
puts additional stress on the
gear train and could reduce the
life of the actuator.
4 EDA-2040/ATP-2040 Electric Damper Actuator Installation Technical Bulletin
Anti-rotation
Screw
9. Lift and hold the manual release lever and turn
Proceed to the Connections section to continue
installation.
Flush
Note:
1. Manually rotate the damper shaft to gently close
2. Install the short shaft coupler into the damper
3. Secure the coupler to the shaft evenly by using
Note:
Figure 7: Tightening Hex Set Screw
the shaft by hand to ensure that the damper can
rotate from its full closed to full open positions.
This application will require the use of
one short shaft coupler (EDA-2040-1002 or
EDA-2040-1003) for each actuator.
the damper blade.
V A V B ox
S h ort S haft
Coupler
Figure 8: Flush Mounting
shaft with the O-ring away from the damper as
shown in Figure 8. The coupler should be 1/8 in.
(3.2 mm) away from the mounting surface.
a 1/8 in. hex key to bottom each hex set screw
of the coupler against the damper shaft.
Maintain 1/8 in. clearance between the
mounting surface and the coupler while
tightening the hex set screws.
30°
Sh ort
Dam per
Sh aft
O -rin g
A T P -20 40