-22 to 130°F (-30 to 55°C) storage and transport -22 to 140°F (-30 to 60°C) Ambient humidity (non-condensing) 95% R.H. UL listed to UL873 Agency certification C-UL certified to Canadian Standard C22.2 No. 24-93 Page 2 Siemens Building Technologies, Inc.
Conduit adapter ASK78.3U Shaft insert for use with 3/8-inch (8 to 10 mm) diameter shafts. Package of ten. NOTE: Factory installed 1/2-inch guide must be removed prior to installation. Shaft insert Siemens Building Technologies, Inc. Page 3...
9. Auxiliary switch B 10. Position indicator 11. Adjustment lever with locking screw (3 mm hex) 12. Set screw for mechanical range stop (3 mm hex) Figure 2. Parts of the Actuator. 13. Mounting bracket Page 4 Siemens Building Technologies, Inc.
2. Make adjustments to the damper position. 3. Slide the red manual override knob MANUAL toward the front of the actuator. Once power is restored, the actuator AUTO returns to automated control Figure 5. Manual Override. Page 6 Siemens Building Technologies, Inc.
EN61558. They must be rated for 100% duty cycle. • Overcurrent protection for supply lines is maximum 10A. Direction of damper If the damper blades turn counterclockwise to open (CCW), reverse the 6 (violet) and rotation 7 (orange) wires at the controller. Siemens Building Technologies, Inc. Page 7...
Switch B Common Black Switch B N.C. Black Switch B N.O. Black Feedback Black Potentiometer 0 to 100% P1 - P2 Feedback Black Potentiometer Common Feedback Black Potentiometer 100 to 0% P3 - P2 Page 8 Siemens Building Technologies, Inc.
A. 4. Stop applying a control signal to wires 1 (red) and 6 (violet). 5. Connect wires S1 and S2 to the DMM. The DMM should indicate an open circuit or no resistance. Siemens Building Technologies, Inc. Page 9...
6. Apply a control signal (24 Vac) to wires 1 (red) and 7 (orange). The DMM should indicate contact closure as the actuator shaft coupling reaches the setting of switch B. WARNING: Service Do not open the actuator. If the actuator is inoperative, replace the unit. Page 10 Siemens Building Technologies, Inc.
Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced. OpenAir is a trademark of Siemens Building Technologies, Inc. Other product or company names mentioned herein may be the trademarks of their respective owners.