Distech Controls DA-088N Series Manual

Hardware Installation Guide
DA-088N Series
Damper Actuator, 88lb.-in., Non-Spring Return, 24V
Figure 1: DA-088N Series Damper Actuator
Product Description
This document describes the hardware installation procedures for the
direct-coupled mounting of the DA-088N 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
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 3.
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 17.
To mount a (modulating) DA-088N024Pxxxx, 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 3. 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-088N024Fxxxx for counter-clockwise
rotation, follow the Counterclockwise Damper Rotation instructions
located in the Wiring Diagrams section when wiring the actuator to the
controller.
Figure 3. 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 25.
- 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 7.
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 4.

3/14
Figure 4. Removing 1/2-inch Ø shaft guide for 3/8-in or 5/8-in shaft.
Figure 5. 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 7.
When using a 5/8-inch shaft:
Figure 6. 5/8 Ø inch shaft.
1. Remove factory installed 1/2-inch guide. See Figure 4.
2. Mount actuator to shaft per Figure 7.
Figure 7. Mounting Actuator to Damper Shaft.
Figure 8. Installing the Position Indicator (b).
Figure 9. 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.

4/14
Control signal adjustment
DA-088N024PAXXP and DA-088N024PA2XP: 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 10.
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 11.
Examples in
Figure 10
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 
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

5/14
Figure 12.
Auxilliary Switches
DA-088N024PA2XP and DA-088N024PX2XP
Figure 13 shows the adjustable switching values for auxiliary switches
A and B.
Figure 13. 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-088N024PXXXP
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 14. 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 15.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 16. 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 17.
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.
Figure 17. Manual Override.

6/14
Dual Auxiliary Switch Setting
For DA-088N024FX2XP, DA-088N024PA2XP, DA-088N024PX2XP
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 18.
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 18. 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 19. Moving the Mechanical Range Stop.
To use the entire 0 to 10V input signal to control the mechanically
limited range, see Figure 14 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 20.
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 20. 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.
Slope (Span) and Offset Adjustment
For DA-088N024PAXXP and DA-088N024PA2XP 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 21.
1
2

7/14
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-088N024Fxxxx
If the damper blades turn counterclockwise to open (CCW), reverse the
6 (violet) and 7 (orange) wires at the controller.
Do not wire different types of actuators (such as DA-221N
Series or DA-310N Series actuators) in parallel with these
models.
(For DA-088N 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-088N024Fxxxx, continued
Each wire has the standard symbol printed on it. See
Table 1.
24 Vac Power Supply Floating Control.
Figure 22. 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-088N024Pxxxx
24 Vac Power Supply, 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
Figure 23. 0 to 10 Vdc Modulating Control.

10/14
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.

11/14
Retrofit Wiring
Modulating Control
(0 to 10 Vdc)
Distech Controls
DA-088N 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-088N 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 24. Dimensions of the DA-ASK75.7U Weather Shield in Inches (Millimeters).

13/14
Dimensions (cont’d)
Figure 25. Dimensions of the DA-088N 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-088N Series_IG_10_EN