3 NM, 5 NM SERIES SPRING RETURN DIRECT COUPLED ACTUATORS
3 62-0274—07
TYPICAL SPECIFICATION
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazardous
condition.
2. Check the ratings given in the instructions and on the
product to make sure the product is suitable for your
application.
3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
Electrical Shock or Equipment Damage Hazard.
Low voltage can shock individuals or short
equipment circuitry.
Disconnect power supply before installation.
IMPORTANT
All wiring must agree with applicable codes,
ordinances and regulations.
Location
These actuators are designed to mount directly to a damper
external drive shaft. The shaft coupling fastens to the drive
shaft. The actuator housing includes slots which, along with
an anti-rotation bracket, secure the actuator to the damper
frame or duct work (see Fig. 7).
NOTES:
— When mounted correctly, these slots allow the
actuator to float without rotating relative to the
damper shaft.
— Using other brackets or linkages, the actuator can
be foot-mounted or tandem-mounted.
Motor Damage Hazard.
Corrosive vapors and acid fumes can damage
metal and plastic parts.
Install motor in areas free of acid fumes and other
deteriorating vapors.
Equipment Damage Hazard.
Tightly securing actuator to damper housing can
damage actuator.
Mount actuator to allow it to float along its vertical axis.
Preparation
Before mounting the actuator onto the damper shaft,
determine the:
— Damper/valve opening direction for correct spring return
rotation. The actuator can be mounted to provide clockwise
or counterclockwise spring return by flipping or turning the
unit over.
— Damper shaft size (see the Specifications section).
Determine Appropriate Mounting
Orientation
The actuators are designed to open a damper by driving the
damper shaft in either a clockwise or counterclockwise
direction (see Fig. 2).
NOTES:
— Actuators are shipped in the fully closed (spring
return) position.
— An arrow on the hub points to a location on the
label to indicate the hub rotary position.
Fig. 2. Spring Return DCA mounting orientation.
Measure Damper/Valve Shaft Length
If the shaft is less than three inches in length, the shaft
coupling must be located between the damper/valve and
actuator housing. If the shaft length is more than three inches,
the shaft coupling may be located on either side of the
actuator housing.
Spring return actuators shall be direct coupled type requiring
neither crankarm nor linkage and be capable of direct mounting
to a jackshaft of up to 5/8 in. diameter. The actuator shall connect
to the shaft using a removable output hub with a self-centering
shaft coupling. This coupling shall provide concentric mounting
and include an integral adjustable range-stop mechanism.
The actuator shall provide two-position, floating, proportional, or
Sylk bus control. Proportional control refers to direct acceptance
of 0-10 Vdc, 2-10 Vdc, or (with addition of a 500 ohm resistor) a 4-
20 mA input signal. Proportional and floating control models
shall provide a feedback signal. Sylk-enabled models provide
control and feedback via communication between the actuator
and Sylk-enabled controller. Actuators shall provide wiring termi-
nals located within an integral access cover with conduit
connections. Proportional and floating actuators shall have a
rotation direction control switch accessible on the cover.
All spring return actuators must be designed for either clockwise
or counterclockwise fail-safe operation with a continuously
engaged mechanical spring. This spring must return the valve or
actuator to a fail-safe position within 25 seconds of power loss.
All actuators shall be designed for a minimum of 60,000 fullstroke
cycles at rated torque and temperature, 60,000 spring return
cycles and 1,500,000 repositions. Run time shall be constant and
independent of: load, temperature, and supply voltage (within
specifications). All actuators shall be UL60730 and cUL (CSA22.2)
listed, have a five year warranty, and be manufactured under ISO
9001 International Quality Control Standards. Actuators shall be
as manufactured by Honeywell.
M27713
CCW TO CLOSE
(FAIL-SAFE POSITION)
CW TO OPEN
CW TO CLOSE
(FAIL-SAFE POSITION)
CCW TO OPEN
Spring
Return
AUX
.5
90
0
0
1
45
MODE
6
5
4
3
2
1
Spring
Return
AUX
.5
90
0
0
1
45
MODE
6
5
4
3
2
1
Spring
Return
AUX
.5
90
0
0
1
45
MODE
6
5
4
3
2
1
Spring
Return
AUX
.5
90
0
0
1
45
MODE
6
5
4
3
2
1
1
0
4
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