Dodge EN310, EN221 User Manual

Dodge Engineering & Controls, Inc.

Toll Free [phone] Fax: [phone]

Installation

EN221 and EN310 Non-Spring Return Electronic Actuators

b

a

EA0662R1

PUSH

c

e

Figure 1. Parts of the EN221 and EN310 Actuators.

Product Description

This installation instruction describes the steps for
direct-coupled mounting of the EN221 and EN310
series non-spring return (NSR) electronic actuators.

Product Numbers

EN221x

EN310x

Installation Conventions

WARNING:

CAUTION:

Personal injury or loss of life may
occur if you do not follow the
procedures as specified.

Equipment damage or loss of
data may occur if you do not
follow procedure as specified.

Required Tools

• 10 mm (13/32-inch) open-end wrench

• Drill

- 4 mm (5/32-inch) drill bit

• Phillips screwdriver

• Marker or pencil

• Adjustable pliers

a. Actuator

b. U-bolt shaft adapter

d

c. Position indicator

d. Shaft adapter locking

g

clip

e. Position indicator

f

adapter

f. Mounting bracket

g. Mounting screws

Prerequisite

The actuator is shipped from the factory with a 5°
pre-load to ensure tight close-off of the damper. To
release the pre-load, press the PUSH button before
mounting the actuator.

Installation

WARNING:

NOTE: You must place the actuator on the

damper shaft so that the front of the
actuator is accessible. The label and the
manual override button are on the front
side.

1. Place the actuator on the damper shaft with the
front of the actuator accessible. The label and
the manual override button are on the front side.

2. For the EN221B2x and EN310B2x only:
Determine the rotation of the damper shaft. Set
the direction of rotation arrow to match the
rotation.

Do not open the actuator.

EA0320R2

Expected Installation Time

30 minutes

CLOCKWISE COUNTER CLOCKWISE

Figure 2. Direction of Rotation Switch.

3. For all models: See Figure 3 and Figure 4 for
clockwise-to-open (CW) installation. See Figure
5 and Figure 6 for counterclockwise-to-open
(CCW) installation.

UL Doc. No. 129-272 EAI/EN-1 Dodge Engineering & Controls, Inc.
Rev. 5, Jan., 2005

Dodge Engineering & Controls, Inc.

Installation

Toll Free [phone] Fax: [phone]

EN221 and EN310 Non-Spring Return Electronic Actuators

For Tandem Applications

• The direction of rotation switches must be
set identically on both actuators according to
the clockwise or counterclockwise rotation of
the damper shaft. The factory setting is
clockwise.

• Minimum damper drive shaft length is four
inches (100 mm).

EA0870R1

Figure 3. Shaft Adapter Placement for Clockwise Rotation on Short and Long Shafts.

1

>20mm
>3/4 in

1

LONGER

SHAFTS

>77 mm

>3 in

<

77 mm

<3 in

SHORTER

SHAFTS

CAUTION:

No more than three actuators are to be used
in tandem applications.

NOTE: EN310B2, containing offset and span

features, cannot be used in a tandem
application.

d

3

b

2

a

2

a

PUSH

SHAFT

ADAPTER

3

d

b

ALIGNMENT

MARK

4

e

PUSH

c

4

PUSH

90

90

Note:

Place the shaft
adapter next to
the alignment

c

5

PUSH

mark keeping
the mark visible.

4

3

1

2

EA0355R1

PUSH

EA0295R1

4

3

PUSH

Figure 4. Mount the Actuator to the Damper Shaft. Go to Figure 7 to Complete the Mounting.

UL Doc. No. 129-272 EAI/EN-2 Dodge Engineering & Controls, Inc.
Rev. 5, Jan., 2005

Dodge Engineering & Controls, Inc.

Installation

Toll Free [phone] Fax: [phone]

EN221 and EN310 Non-Spring Return Electronic Actuators

d

c

4

PUSH

90

c

5

PUSH

>20mm
>3/4 in

1

EA0869R1

LONGER

SHAFTS

1

>77 mm

>3 in

<

77 mm

<3 in

SHORTER

SHAFTS

3

b

2

a

b

2

a

PUSH

SHAFT

ADAPTER

90

3

d

ALIGNMENT

MARK

4

e

PUSH

Figure 5. Shaft Adapter Placement for Counterclockwise Rotation on Short and Long Shafts.

6

5

PUSH

PUSH

90

90

7

6

PUSH

PUSH

NOTE:
Place the shaft
adapter next to the
alignment mark
keeping the mark
visible.

1/2

1/2

5

4 4

3

EA0356R1

2

PUSH

EA0362R1

1

Figure 6. Mount the Actuator to the Damper Shaft. Figure 7. Attach the Mounting Bracket.

Place the actuator on the shaft with the damper blades in the desired 0 position.
Tighten the middle screw so that the shaft is in the center of the shaft adapter opening.

3

PUSH

f

EA0357R2

g

6

4 mm

5/32 in.

2 PLACES

UL Doc. No. 129-272 EAI/EN-3 Dodge Engineering & Controls, Inc.
Rev. 5, Jan., 2005

Dodge Engineering & Controls, Inc.

Toll Free [phone] Fax: [phone]

EN221 and EN310 Non-Spring Return Electronic Actuators

Manual Override

To move the damper blades without power present,
do the following:

1. Hold down the PUSH button.

2. Make adjustments to the damper position.

3. Release the PUSH button.

NOTE: If there is no load, the actuator will hold the

new damper position. If load conditions
exist, the actuator might not be able to
hold.

Once power is restored, the actuator returns to
automated control.

3

Installation

3. Return the actuator gear train to the "0" position
using the steps which follow for the clockwise or
counterclockwise damper shaft rotation.

Clockwise-to-open:

a. Insert the shaft adapter to the right as close as

possible to the raised stop. Figure 10.

90

90

PUSH

EA0674R1

Figure 10.

b. Hold down the PUSH button and rotate the shaft

adapter to the left until it stops. Figure 11.

3

2

PUSH

PUSH

EA0666R1

L > 3 in.
77mm

1

L < 3 in.
77mm

Figure 8. Manual Override for Long and Short Damper

Shafts.

2

PUSH

PUSH

Mechanical Range Adjustment

The angular rotation is adjustable between 0° and
90° at 5-degree intervals.

1. Loosen the shaft adapter from the damper shaft
and remove the actuator from the damper shaft.

2. Remove the clip and shaft adapter from the
actuator. See Figure 9.

1

2

PUSH

EA0686R1

Figure 9.

90

90

PUSH

EA0675R1

Figure 11.

c. Release the PUSH button.

d. If the shaft adapter is not resting against the left

raised stop, remove the adapter and insert it
against the left stop.

e. Place the position indicator to the "0" position on

the outside scale. Figure 12.

Counterclockwise-to-open:

a. Insert the shaft adapter to the left as close as

possible to the raised stop.

b. Hold down the PUSH button and rotate the shaft

adapter to the right until it stops.

c. Release the PUSH button.

d. If the shaft adapter is not resting against the

right raised stop, remove the adapter and insert
it against the right stop.

e. Place the position indicator to “0” on the inside

scale.

UL Doc. No. 129-272 EAI/EN-4 Dodge Engineering & Controls, Inc.
Rev. 5, Jan., 2005

Dodge Engineering & Controls, Inc.

Installation

Toll Free [phone] Fax: [phone]

EN221 and EN310 Non-Spring Return Electronic Actuators

A

N

G

L

E

O

F

R

O

T

A

T

I

O

90

N

90

PUSH

EA0676R1

Figure 12.

4. Determine the angle of rotation for the damper
blade shaft. Subtract that amount from 90°.

5. Remove the shaft adapter and insert it with the
position indicator pointing to mark on the scale
calculated in the previous step. Figure 13.

Mounting for NEMA 2 Rating

NEMA 2

<

EA1152R1

Figure 14. Acceptable NEMA 2 Mounting Position

for Single and Tandem Applications.

90

90

90

PUSH

EA0677R1

Figure 13.

6. Attach the clip.

7. Rotate the damper blade shaft to its "0" position.

8. Return the actuator to the damper shaft and
tighten the shaft adapter to the damper shaft.

0

9

<

90

Dual Auxiliary Switch (-S option)

Actuator rotary range with the shaft adapter mounted at

-5° 0° 10° 20° 30° 70° 80° 90°

0° 10° 20° 30° 70° 80° 90°

EA0413R2

A

B

Figure 15.

UL Doc. No. 129-272 EAI/EN-5 Dodge Engineering & Controls, Inc.
Rev. 5, Jan., 2005

position 0.

Setting range for Switches A and B: 0 - 90°

Setting interval: 5°

Switching hysteresis: 2°