Dwyer DDC - Manual

Series DDC 17, 35, 53, 70 in-lb Modulating Damper Actuator
Specifications - Installation and Operating Instructions
Bulletin V-21
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
Series DDC Direct Coupled Actuators are non-spring return actuators
that are perfect for positioning of dampers and valves in HVAC Systems.
Actuators are designed to accept 4 to 20 mA or 0 to 10 VDC modulating
control signals and are 24 VAC powered. Actuators produce 17 to 70 in-
lb (2 to 8 Nm) of torque. Unit features a 0 to 100 VDC feedback signal of
damper position.
Features
• Direct mount.
• Actuator travel indicator.
• Overload protection.
• Manual override.
• Modulating 4 to 20 mA or 0 to 10 VDC control signal.
• Position feedback signal.
• 60,000 cycles nominal.
FUNCTION TESTING
Press the manual button on the back of the actuator. The gearing inside
the actuator will break away. The damper can be operated manually
while pressing the manual button. DO NOT OPERATE WHEN POWER
IS ON!
SPECIFICATIONS
Power Requirements: 24 VAC, ±10%, 50/60 Hz, single phase.
Power Consumption: 4 VA.
Control Input: 4-20 mA or 0-10 VDC.
Overload Protection: Magnetic clutch.
Angle of Rotation: 95° (mechanically adjustable).
Accuracy: ±5%.
Fits Shaft Diameter: 0.4˝ (10 mm) or 0.5˝ (13 mm).
Position Indication: Visual indicator.
Direction of rotation: CW/CCW.
Running Time: 17 in-lb, 35 in-lb, 53 in-lb: 72 sec.; 70 in-lb:160 sec.
Electrical Connection: Terminal block, 18 AWG.
Manual Override: Push button.
Temperature Limit: -22 to 122°F (-30 to 50°C).
Sound: <45 dB.
Life Expectancy: 60000 full cycles.
Housing: NEMA 2 (IP40).
Wiring Connection: Terminal block.
Standard Accessories: (2) imitative baffles, (2) baffle setscrews, (1)
actuator body setscrew, and (1) aluminum gasket.
Weight: 1.72 lb (0.78 kg).
5-23/32
(145.26)
4-53/64
(122.63)
17/32 SQ
(13.49)
3-25/64
(86.12)
63/64
(25.00)
2-59/64
(74.22) 1-47/64
(44.05)
9/64
(3.57)
21/32
(16.67)