Distech Controls DA-044N Series Manual

Hardware Installation Guide
DA-044N Series
Damper Actuator, 44lb.-in., Non-Spring Return, 24V
Figure 1: DA-044N Series Damper Actuator
Product Description
This document describes the hardware installation procedures for the
direct-coupled mounting of the DA-044N Series damper actuators.
General Installation Requirements
For proper installation and subsequent operation of each actuator, pay
special attention to the following recommendations:
- Upon unpacking the product, inspect the contents of the carton for
shipping damages. Do not install damaged actuators.
- Avoid areas where corroding, deteriorating or explosive vapors,
fumes or gases may be present.
- Ensure that all equipment is installed according to local, regional,
and national regulations.
Personal injury or loss of life may occur if you do not follow a
procedure as specified.
Equipment damage or loss of data may occur if you do not
follow a procedure as specified.
Take reasonable precautions to prevent electrostatic
discharges to the controller when installing, servicing or
operating the controller. Discharge accumulated static
electricity by touching one’s hand to a well-grounded object
before working with the controller.
Product Parts
a) Actuator
b) Position indicator
c) Mounting bracket
d) Mounting screws
e) 4 mm hex key
f) Shaft insert for use with 3/8-inch (8-10 mm) shafts

2/14
Product Components
Actuator Components
Figure 2: Parts of the Actuator
1. Base plate
2. Positioning scale for angle of
rotation
3. Slope adjustment
4. Offset (start point) adjustment
5. DIP switches
6. Cover for DIP switches
7. Connection cables
8. Connection cables
9. Manual override
10. Coupling bushing
11. Factory installed 1/2-inch
guide
12. Auxiliary switch A
13. Auxiliary switch B
14. Position indicator
15. Adjustment lever with locking
screw (4 mm hex)
16. Set screw for mechanical
range stop (4 mm hex)
17. Mounting bracket
Terminal Strip
Figure 3: DA-044N024PXXXT - Uses a Terminal Strip for
connection purposes rather than cable connections.
Post Header AMP
Figure 4: DA-044N024PXXXA - Uses a Post Header for
connection purposes rather than cable connections.
The Post Header AMP has two identical sets of
contacts.
Instructions
Estimated Installation Time
30 minutes
Required Tools
- 4 mm hex wrench
- 4 mm (5/32-inch) drill bit and drill
- Small flat-blade screwdriver
- Marker or pencil
Do not open the actuator.
Place the actuator on the damper shaft so that the front
of the actuator is accessible. The label is on the front
side. A mounting bracket is included with the actuator.
1. Determine whether the damper blades will rotate clockwise or
counterclockwise to open. See Figure 5.
2. If the blades will rotate counterclockwise, slide the manual override
switch to manual, and move the adjustment lever to the right.
Return the switch to automatic. See Figure 19.
To mount a (modulating) DA-044N024Pxxxx, set the Dual In-line
Package (DIP) switches to the required positions.
1. To access the DIP switches, raise the tab on the lower left side of
the actuator. See Figure 5. The factory setting is clockwise (middle
switch), with a direct-acting feedback signal (right switch).
2. Close the tab over the DIP switches.
To mount a (3-positon) DA-044N024Fxxxx for counter-clockwise
rotation, follow the Counterclockwise Damper Rotation instructions
located in the Wiring Diagrams section when wiring the actuator to the
controller.

3/14
Figure 5. Setting the Direction of Rotation.
Mounting and Installation
Damper Shaft Sizes
- The minimum damper drive shaft length is 3/4-inch (20 mm).
- Observe the service envelope around the actuator as shown in
Figure 35.
- Detailed mounting instructions are included with each actuator.
1/2-inch Ø:
Actuators come with
a factory installed
1/2-inch shaft guide..
If shaft size is 1/2-
inch, proceed with
Figure 9.
3/8-inch Ø:
Use the shaft insert supplied
for any 3/8-inch (8 to 10mm)
diameter shaft
5/8-inch Ø
For all damper shafts with the exception of the 1/2-inch
round shaft: Remove 1/2-inch Ø guide before
installation.
When using a 3/8-inch shaft: Remove factory installed 1/2-inch guide.
See Figure 6.
Figure 6. Removing 1/2-inch Ø shaft guide for 3/8-in or 5/8-in shaft.
Figure 7. 3/8 Ø inch shaft, see Figure 2, Item f.
1. A 3/8-inch shaft adapter is provided in actuator package.
2. Hold the shaft insert so that the raised tabs are inserted last when
placing the insert into the back of the actuator.
3. Proceed to Figure 9.
When using a 5/8-inch shaft:
Figure 8. 5/8 Ø inch shaft.
1. Remove factory installed 1/2-inch guide. See Figure 6.
2. Mount actuator to shaft per Figure 9.
Figure 9. Mounting Actuator to Damper Shaft.

4/14
Figure 10. Installing the Position Indicator (b).
Figure 11. Attaching the Mounting Bracket.
Operation
A continuous 0 to 10 Vdc signal from a controller to wire 8 (Y) operates
the damper actuator. The angle of rotation is proportional to the control
signal. A 0 to 10 Vdc position feedback output signal is available
between wire 9 (U) and wire 2 (G0) to monitor the position of the
damper motor.
In the event of a power failure, the actuator holds its position. In the
event that only the control signal is lost, the actuator returns to the "0"
position.
Life Expectancy
An improperly tuned loop will cause excessive repositioning that will
shorten the life of the actuator.
Control signal adjustment
DA-044N024PAXXP and DA-044N024PA2XP: For sequencing and
the electronic limitation of the angle of rotation.
- Use the Uo potentiometer to set the offset (start point) between 0
to 5 Vdc.
- Use the U potentiometer to set the slope (span) between 2 to 30
Vdc.
The Y input is limited to a maximum of 10 Vdc. If the
sum of the offset and slope setting is greater than 10V,
the angle of rotation is reduced providing the feature of
electronic limitation of the angle of rotation.
Figure 12.
Ys: Actuator position (100% = angle of rotation
90°*)
Y: Control input signal
Uo: Offset (start point)
U: Slope
Uw: Active voltage range (Ys changes)
*When the mechanical limitation of the angle of rotation
and self-adapt function are ON, 100% does not equal
90°.
Setting for
10V slope
0 Vdc
offset
Figure 13.
Examples in
Figure 12
Uo
Offset
Vdc
U
Slope
Vdc
Active Voltage
Range
Vdc
Ys
Actuator
Position
Minimum slope
0
2
0 to 2
0 to 100%
Limitation of
rotation
5
30
5 to 10
0 to 16.7%
Limitation of
rotation
0
30
0 to 10
0 to 33.3%
Setting shown in
Figure 14
0
10
0 to 10
0 to 100%
Control signal adjustment example:
Determine the setting needed to electronically limit the angle of
rotation between 0 to 50% (0 to 45°) using a 2 to 10 Vdc input.
Calculating the value of U:
VdcVdcVdcVdcUoVdc
[%]
U16)210(
%50%100
])[][10(
[%]Ysrotationof
angleworking
100 

5/14
Settings: Uo = 2 Vdc; U = 16 Vdc
Electronic limitation:
- Angle of rotation: Ys = 50% (45°)
- Slope: U = 16V
- Active voltage range: Uw = 2 to 10 Vdc
Figure 14.
Auxilliary Switches
DA-044N024PA2XP and DA-044N024PX2XP
Figure 15 shows the adjustable switching values for auxiliary switches
A and B.
Figure 15. Adjustable Switching Values for the Dual
Auxiliary Switches.
The auxiliary switch setting shafts rotate with the
actuator. The scale is valid only when the actuator is in
the "0" position on clockwise motion
Use the long arm of the † (AUX SWITCH ADJUSTMENT) to point to
the position of switch A. Use the narrower tab on the red ring to point to
the position of switch B.
Dual in-Line Package (DIP) Switches
For: DA-044N024PXxxx / PAxxx
Raise the protective cover from left to right to locate the DIP switches.
See Figure 2 for the location of the cover.
The factory setting is 0 (OFF).
When mechanical angle of rotation is limited, the self-adapt switch may
be turned ON so that the limited range will become the new 0 to
100% for the actuator logic. In this case, 0 to 100% is not equal to 90°.
Figure 16. Self-adapt Switch.
When turning the self-adaptive feature on or after the
software reset with the feature on, the actuator will enter a
five-minute calibration cycle as the actuator adjusts to the
rotation limits of the system. A software reset happens after
power on or may be caused by electrostatic discharge (ESD)
at levels of 2kV and above.
The position output signal U is not influenced by the self-adapt
function. The 0 to 10V feedback signal U is always proportional to 0° to
90° (or 90° to 0°).
The factory setting is clockwise.
The direction of rotation switch should match the damper rotation
movement.
Figure 17. Direction of Rotation Switch.
The factory setting is direct acting.
As the clockwise angle of rotation increases, the output voltage
increases.
If the direction of rotation is counterclockwise, the output signal switch
should be set at reverse acting to match the direction of the rotation
switch.
Figure 18. Output Signal Switch.
Manual Override
To move the damper blades and lock the position with no power
present, do the following:
1. Slide the red manual override knob toward the back of the actuator.
See Figure 19.
2. Make adjustments to the damper position.
3. Slide the red manual override knob toward the front of the actuator.
Once power is restored, the actuator returns to automated control.

6/14
Figure 19. Manual Override.
Dual Auxiliary Switch Setting
For DA-044N024FX2XP, DA-044N024PA2XP, DA-044N024PX2XP
only.
Factory setting:
- A = 5°
- B = 85°
Use a flat-blade screwdriver to adjust the A switch. The long arm of the
†points to the setting. Manually turn the red ring of the B switch. The
narrower tab on the ring points to the setting. See Figure 20.
The auxiliary switch setting shafts rotate with the actuator.
The scale is valid only when the actuator is in the "0" position on
clockwise motion.
Figure 20. Auxiliary Switch Setting Dial.
Mechanical Range Adjustment
1. Loosen the stop set screw.
2. Move it along the track to the desired position, and fasten it in
place.
Figure 21. Moving the Mechanical Range Stop.
To use the entire 0 to 10V input signal to control the mechanically
limited range, see Figure 16 for setting self-adaptive features.
Example:
Stop set screw at 70°
Self-adapt switch ON
Input signal Y = 5 Vdc
The damper will be at 35° (50% of the adjusted range.)
Note:On versions with the slope and offset features, this example
assumes
- Offset Uo = 0 Vdc
- Slope U = 10 Vdc
Mechanical Range Limitation and
Self–Adapt Feature
1. To use the entire 0 to 10V input signal to control the adjusted range,
raise the tab located on the lower left-hand side of the actuator and
locate the DIP switches. See Figure 22.
2. Set the self-adapt DIP switch to (ON).
3. Close the tab over the DIP switches.
For example, if you set the locking screw at 70° and turn the self-adapt
switch ON, a 5V input signal will drive the damper to 35° (50% of its
adjusted range).
Factory setting 0 (OFF)
Figure 22. Self-adapt Switch in the On Position.
When turning the self-adaptive feature on, or after software
reset with the feature on, the actuator will enter a five-minute
calibration cycle as the actuator adjusts to the rotation limits
of the system. The software reset happens after power on,
or may be caused by electrostatic discharge (ESD) at levels
of 2 kV and above.
1
2

7/14
Slope (span) and Offset Adjustment
For DA-044N024PAXXP and DA-044N024PA2XP only
Factory setting:
Slope (span) U 10
Offset Uo = 0
Use a flat-blade
screwdriver to make
adjustments. The long
arm of the †points to the
setting.
Figure 23.
Wiring
All wiring must conform to NEC and local codes and regulations.
Use earth ground isolating step-down Class 2 transformers. Do not use
autotransformers.
The sum of the VA ratings of all actuators and all other components
powered by one transformer must not exceed the rating of the
transformer.
Determine the supply transformer rating by summing total VA of all
actuators used. It is recommended that one transformer power no
more than 10 actuators.
All six outputs of the dual auxiliary switch (A and B) must
only be connected to:
- Class 2 voltage (UL/CSA).
- Separated Extra-Low Voltage (SELV) or Protective
Extra Low Voltage (PELV) (according to HD384 4 41)
for installations requiring conformance.
Installations requiring Conformance
- All wiring for CE rated actuators must only be
separated extra low voltage (SELV) or protective extra
low voltage (PELV) per HD384-4-41.
- Use safety-isolating transformers (Class III transformer)
per EN 61558. They must be rated for 100% duty cycle.
- Overcurrent protection for supply lines is maximum
10A.
Wiring Diagrams
Counterclockwise Damper Rotation of DA-044N024Fxxxx
If the damper blades turn counterclockwise to open (CCW), reverse the
6 (violet) and 7 (orange) wires at the controller.
(For DA-044N floating control actuator series only) To
prolong actuator life, use a controller and/or software that
provide a time-out function. This function removes the
actuator drive signal after the signal has been on for a
predefined time.

8/14
DA-044N024Fxxxx, continued
Each wire has the standard symbol printed on it. See Table
1.
24 Vac Power Supply Floating Control.
Figure 24. Floating Control.
Table 1. 3-position Control 24 Vac.
Standard
Symbol
Function
Terminal
Designation
Color
1
Supply (SP)
G
Red
6
Control signal clockwise
Y1
Violet
7
Control signal
counterclockwise
Y2
Orange
S1
Switch A Common
Q11
Gray/red
S2
Switch A N.C.
Q12
Gray/blue
S3
Switch A N.O.
Q14
Gray/pink
S4
Switch B Common
Q21
Black/red
S5
Switch B N.C.
Q22
Black/blue
S6
Switch B N.O.
Q24
Black/pink
P1
Feedback Potentiometer
0 to 100% P1 - P2
a
White/red
P2
Feedback Potentiometer
Common
b
White/blue
P3
Feedback Potentiometer
100 to 0% P3 - P2
c
White/pink
Each wire has the standard symbol printed on it. See
Table 2.
DA-044N024Pxxxx
24 Vac Power Supply, Modulating Control
Figure 25. 0 to 10 Vdc Modulating Control.
Table 2. Modulating Control
Standard
Symbol
Function
Terminal
Designation
Color
1
Supply (SP)
G
Red
2
Neutral (SN)
G0
Black
8
0 to 10V input signal
Y
Gray
9
Output for 0 to 10 Vdc
position indication
U
Pink
Factory installed options
S1
Switch A –Common
Q11
Black
S2
Switch A –N.C.
Q12
Black
S3
Switch A –N.O.
Q14
Black
S4
Switch B –Common
Q21
Black
S5
Switch B –N.C.
Q22
Black
S6
Switch B –N.O.
Q24
Black

9/14
Terminal Strip - DA-044N024PXXXT
Maximum wire size for the DA-044N024PXXXT is 14
AWG.
Figure 26. DA-044N024PXXXT Terminal Strip.
Figure 27. DA-044N024PXXXT Wiring Diagram.
Strain Relief
Securing the wires/cabling will prevent breakage and ensure strong
signals to and from the DA-044N024PXXXT model.
The following is recommended:
1. The open bracket to the right of the actuator terminal strip is the
strain relief for the customer provided control wires.
2. Secure the wires to the actuator bracket with a cable tie as shown
in Figure 28.
Figure 28.
Post Header AMP - DA-044N024PXXXA
The DA-044N024PXXXA Post Header AMP has two sets of identical
contacts as shown in Figure 29.
- All wiring must conform to NEC and local codes and regulations.
- Use earth ground isolating step-down Class 2 transformers. Do
not use autotransformers.
Determine the supply transformer rating by summing the total VA of all
actuators used. It is recommended that one transformer power no
more than 12 actuators.
Installations requiring Conformance
- All wiring for CE rated actuators must only be
separated extra low voltage (SELV) or protective extra
low voltage (PELV) per HD384-4-41.
- Use safety-isolating transformers (Class III transformer)
per EN 61558. They must be rated for 100% duty cycle.
- Over current protection for supply lines is maximum
10A.
It is necessary that the output current properly sustain and
operate all DA-044N024PXXXA actuators in a daisy chain
configuration.
Figure 29. DA-044N024PXXXA Post Header AMP.
Figure 30. DA-044N024PXXXA - 0 to 10 Vdc Modulating Control
Wiring Diagram.
The input cable (purchased separately) brings power and a control
signal to the first actuator in a daisy chain configuration. See Figure 32
and Figure 33.
Insert the plug into the DA-044N024PXXXA from the left to
prevent damage to the cable wires. (See Figure 29)
1. The open bracket to the right of the actuator (See Figure
27) is used for strain relief of the customer purchased
cabling (See Required Tools).
2. Secure the cabling to the actuator bracket with a cable
tie. (See Figure 30.)
Modulating Control Input Cable
DA-985-133
3 ft
12 pk
Note: You must
select either the top
3 contacts or the
bottom 3 contacts.

10/14
Figure 31. Always Insert the Cable From the Left.
Figure 32. Input Cable Installed in Bottom Three Contacts.
Daisy Chain Cables
DA-985-134
12 ft
12 pk
DA-985-135
25 ft
12 pk
Daisy Chain Configuration
Figure 33.
Note: You must select either the top 3 contacts or the bottom 3
contacts.
Do not configure more than 12 actuators in a daisy chain at
any time.
Start-Up / Commissioning
1. Check that the wires are connected correctly.
2. Check that offset and slope are set correctly, if used.
3. Check that the direction of rotation switch/cable matches the
rotation of the damper shaft.
4. Connect wires 1 (red) and 2 (black) to a Digital Multimeter (DMM)
with the dial set at AC V to verify that the operating voltage is within
range.
Check operation:
1. Connect wires 1 (red) and 2 (black) to the actuator.
2. Set the DMM dial to Vdc.
3. Connect wires 2 (black) and 8 (gray) to the DMM.
4. Apply a full-scale input signal (10 Vdc) to wire 8 (gray).
5. Allow the actuator shaft coupling to rotate from 0 to 90°.
6. Disconnect wire 8 (gray) and the shaft coupling returns to the “0”
position.
Check Feedback:
1. Set the DMM dial to Vdc.
2. Attach wires 2 (black) and 9 (pink) to the DMM.
3. Apply a full-scale input signal to wire 8 (gray). The reading at the
DMM should increase.
4. Remove the signal from wire 8 (gray). The reading at the DMM
should decrease and the actuator shaft coupling returns to the “0”
position.
Check the Auxiliary Switch A:
1. Set the DMM dial to ohms (resistance) or continuity check.
2. Connect wires S1 and S3 to the DMM.
The DMM should indicate open circuit or no resistance.
3. Apply a full-scale input signal to wire 8 (gray). The DMM should
indicate contact closure as the actuator shaft coupling reaches the
setting of switch A.
4. Connect wires S1 and S2 to the DMM. The DMM should indicate
open circuit or no resistance.
5. Stop the signal to wire 8 (gray). The DMM should indicate contact
closure as the actuator shaft coupling reaches the setting of switch
A.
Check the Auxiliary Switch B:
1. Set the DMM dial to ohms (resistance) or continuity check.
2. Connect wires S4 and S6 to the DMM. The DMM should indicate
open circuit or no resistance.
3. Apply a full-scale input signal to wire 8 (gray). The DMM should
indicate contact closure as the actuator shaft coupling reaches the
setting of switch B.
4. Connect wires S4 and S5 to the DMM. The DMM should indicate
open circuit or no resistance.
5. Stop the signal to wire 8 (gray). The DMM should indicate contact
closure as the actuator shaft coupling reaches the setting of switch
B.
Note: You must
select either the top
3 contacts or the
bottom 3 contacts.

11/14
Retrofit Wiring
Modulating Control
(0 to 10 Vdc)
Distech Controls
DA-044N Series
Siemens
GDE Series
GLB Series
Belimo
LMB Series
NMB Series
Honeywell
MN7505 Series
MN7510 Series*
Johnson
M9104 Series
M9109 Series*
Function
Color
Number
Color
Number
Color
Number
Color
Number
Color
Number
Supply 24V
Red
1
Red
1
Red
2
Red
1
Red
2
Common
Black
2
Black
2
Black
1
Black
2
Black
1
0(2) to 10 Vdc Input
Gray
8
Gray
8
White
3
Brown
3
Gray
3
0(2) to 10 Vdc
Feedback
Pink
9
Pink
9
Orange
5
Blue
5
Orange
4
Notes:
MN7510 Series is not available precabled. Numbers listed associate with terminal positions.
M9109 Series is not available precabled. Numbers listed associate with terminal positions.
Floating Control
Distech Controls
DA-044N Series
Siemens
GDE Series
GLB Series
Belimo
LMB Series
NMB Series
Honeywell
MN6105 Series
MN6110 Series*
Johnson
M9104 Series
M9109 Series*
Function
Color
Number
Color
Number
Color
Number
Color
Number
Color
Number
Common
Red
1
Red
1
Black
1
Black
2
Black
1
24V CW
Violet
6
Violet
6
Red
2
Red
3
Red
2
24V CCW
Orange
7
Orange
7
White
3
White
4
Orange
3
Notes:
MN6110 Series is not available precabled. Numbers listed associate with terminal positions.
M9109 Series is not available precabled. Numbers listed associate with terminal positions.

12/14
Dimensions
Figure 34. Dimensions of the DA-ASK75.7U Weather Shield in Inches (Millimeters).

13/14
Dimensions (cont’d)
Figure 35. Dimensions of the DA-044N Actuator and Mounting Bracket in Inches (mm)

©, Distech Controls Inc., 2014. All rights reserved.
While all efforts have been made to verify the accuracy of information in this manual, Distech Controls is not responsible for damages or claims arising from the use of this
manual. Persons using this manual are assumed to be trained HVAC specialist / installers and are responsible for using the correct wiring procedures and maintaining safe
working conditions with fail-safe environments. Distech Controls reserves the right to change, delete or add to the information in this manual at any time without notice.
Distech Controls, the Distech Controls logo, and Innovative Solutions for Greener Buildings are trademarks of Distech Controls Inc. All other trademarks are property of their
respective owners.
14/14
DA-044N Series_IG_10_EN
Dimensions (cont’d)
Figure 36. DA-044N024PXXXT and DA-044N024PXXXA Actuators and Mounting Bracket Dimensions in Inches (mm).