Siemens ASC77.2U User's Manual
Contents
1. WARNING A Do not mix operations Apply only line voltage or only Class 2 voltages to the switching outputs of both auxiliary switches A and B EA1185R1 Figure 11 Manual Override Auxiliary Switches CAUTION There should be no load on the actuator when setting the auxiliary switches 24 Vac 250 V 6 2 A Setting the Switches EA1189R1 With the actuator in the full closed 0 position press in and turn with a Phillips screwdriver to the desired setting Release pressure to set the switch The switch is now set Figure 14 Wiring Diagram Wiring Designation Wire Code Color Switch Function 1 Gray red A Input S2 Gray blue A NC S3 Gray pink A NO S4 Black red B Input S5 Black blue B NC S6 Black pink B NO EA1186R1 Figure 12 Press In Turn to Adjust Release to Set Switch Page 4 of 5 Siemens Building Technologies Inc Document No 129 420 Installation Instructions December 13 2004 Dimensions ry A 1 2 30 5 y A tf 49 124 5 s 3 7 94 Y LA 2 0 alg 1 6 amp 51 2 39 8 A 3 6 A 8 e 13 91 24 5 3 5 Figure 15 External Auxiliary Switch Dimensions in Inches mm Information in this publication is based on current specifications The company reserves the right to make changes in spe2. Shaft Adapter at Position A Page 2 of 5 New Spring Return Actuators 1 Without the shaft adapter installed using the hex wrench wind the manual override one full revolution and release the wrench See Figure 5 The actuator will return to the 0 position and the preload is now removed EA1192R1 Figure 5 2 Manually install the shaft adapter against the external stop on the left end of the actuator See position B in Figure 4 Removing Factory Pre load from New SR Actuator Preparing the Actuator Shaft Adapter 1 Remove the position indicator from an in service actuator 2 Determine the appropriate position adapter ring See Figure 1 3 Align and snap the three open notches on the edge of the EAS position adapter ring in place over the three raised stubs on the actuator shaft adapter See Figure 6 NOTE GCA GBB GIB models use the larger ring GMA GEB models y J use smaller ring IS See Figure 1 EA1177R1 Figure 6 Attaching the EAS Position Adapter Ring Siemens Building Technologies Inc Short shaft applications NOTE The short shaft adapter is included in the packing box with the shaft adapter With the short shaft adapter in place align the notch of the EAS over the protruding tab on the position adapter ring and secure in place See Figure 7 Short Shaft Adapter EA1178R1 Figure 7 Attaching EAS to GCA GIB GBB Shaft Adapter Preparing the EAS for
3. system Double insulated no Switch range Prerequisites Switch A 0 to 90 with 5 intervals CAUTION Recommended 0 to 45 usage Remove power from in service damper Switch B 0 to 90 with 5 intervals actuator before installing external i aaa 45 to 90 auxiliary switch Switching hysteresis 2 WARNING Do not open the external auxiliary switch ASK75 3U gt a Bo at ASK75 3U EA1I91R1 or ASK75 1U Figure 2 NEMA Type 3R Rating Only With Use of Weather Shield Page 1 of 5 Document No 129 420 Installation Instructions December 13 2004 Installation New Actuators Remove Pre load GCA GBB GIB Figure 3 Determine Actuator Model and Orientation NOTE For in service actuators skip Removing Pre load For new actuators remove the factory installed 5 pre load Removing Preload Before the External Auxiliary Switch can be installed on a new out of the box actuator you must remove the factory installed preload New Non Spring Return Actuators 1 Insert shaft adapter at position A See Figure 4 2 Press the manual override button and move the shaft adapter counterclockwise until actuator reaches the internal stop actuator will not move past this point 3 Remove the shaft adapter and manually reinstall it against the external end stop at position B See Figure 4 4 Proceed with EAS installation EA1190R1 Figure 4 Insert
4. Installation Instructions Document No 129 420 December 13 2004 SIEMENS OpenAir External Auxiliary Switch External dual auxiliary switch Position indicator GCA GBB GIB position adapter GMA GEB position adapter 3 mm hex key 929 5 Plastic mounting adapter inserts 2 Threaded M5 x 25 screws 2 Figure 1 External Auxiliary Switch Kit Contents Product Description The OpenAir External Auxiliary Switch EAS provides switch functionality for standard model damper actuators with easy installation for in service units Warning Caution Notations WARNING Personal injury loss of life may occur if you do not follow the procedures as specified Product Number ASC77 2U CAUTION Equipment damage or loss of data may occur if you do not follow the procedures as specified Required Tools Phillips screwdrivers No 2 for screws No 1 for adjustment Specifications Dual Auxiliary Switches 24 Vac to 250 Vac Agency certification UL listed to UL 873 cUL certified to Canadian Standard C22 2 No 24 93 Electromagnetic compatibility 89 336 EEC Low voltage directive 73 23 EEC Conduit Connection Threaded 1 2 inch NSPT flex only Shipping Weight 1 1 Ib 0 48 kg Item Number 129 420 Rev 010 A AC rating AC 6A resistive AC 2 FLA 12 LRA i i ae TO Was 30 Vas ieee Installation Time g DC 2A minutes Insulation
5. Mounting 2 On the back of the EAS push the plastic inserts into the mounting holes See Figure 8 and Figure 9 3 Mount the position indicator on the face of the EAS See Figure 8 step 2 and Figure 9 step 2 Figure 8 For GMA GEB Actuators Use Top Screw Holes Siemens Building Technologies Inc Document No 129 420 Installation Instructions December 13 2004 Figure 9 For GCA GBB GIB Actuators Use the Bottom Screw Holes Mounting External Auxiliary Switch to Actuator 1 Nest the alignment peg of the EAS position adapter ring into the notch See Figure 10 The EAS lies flush against the face of the actuator Note GMA GEB actuators use top screw holes GCA GBB GIB models use bottom screw pe A Pe _ 9 5 4 5 Ib in 1 1 Nm 0 2 Figure 10 Bringing the EAS and the Actuator together EA1183R1 2 Secure the EAS in place with the M5x25 screws provided See Figure 10 CAUTION The EAS should not shift when it is correctly installed firmly against the face of the actuator The installation is complete Page 3 of 5 Document No 129 420 Installation Instructions December 13 2004 Manual Override NOTE When EAS is installed you can still access the manual override capability as shown in Figure 11 DM Q24 O EA1187R1 Figure 13 Example of Switches Set to 5 and 85 Wiring
6. cifications 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 2004 Siemens Building Technologies Inc Siemens Building Technologies Inc Your feedback is important to us If you have comments Document No 129 420 1000 Deerfield Parkway about this document please send them to Country of Origin US Buffalo Grove IL 60089 4513 technical editor siemens com Page 5 of 5 U S A
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