Dwyer DDA - Manual

Series DDA 17, 35, 53 and 70 in-lb On/Off Damper Actuator
Specifications - Installation and Operating Instructions
Bulletin V-19
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]
DDA Series 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 floating control signals and come in a
variety of power supplies. Actuators produce 17 to 70 in-lb (2 to 8 Nm) of
torque. Contact factory for optional internal auxiliary switch.
Features
• Direct mount.
• Actuator travel indicator.
• Overload protection.
• Manual override.
• Floating control 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: 110 VAC, 24 VAC, ±10%, 50/60 Hz, single
phase. Optional 230 VAC.
Power Consumption: 110 VAC models: 5 VA, 230 VAC models: 5 VA,
24 VAC models: 3 VA.
Control Input: Two-position, floating.
Overload Protection: Magnetic clutch.
Angle of Rotation: 95° (mechanically adjustable).
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 (IP48).
Standard Accessories: (2) imitative baffles, (2) baffle setscrews, (1)
actuator body setscrew, and (1) aluminum gasket.
Weight: 1.72 lb (0.78 kg).