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Siemens Synco 900 Mounting And Commissioning

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Synco
Mounting and commissioning
Edition 2.0
Controller series B
CE1C2707en
05.07.2007
™
900

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Summary of Contents for Siemens Synco 900

  • Page 1 Synco ™ Mounting and commissioning Edition 2.0 Controller series B CE1C2707en 05.07.2007...
  • Page 3 We congratulate you … … on the selection of the Siemens Synco 900 system and thank you for purchasing the central apartment unit! The present document describes how to mount and commission the central apartment unit and the other system components.

  • Page 4: Table Of Contents

    Connect smoke detectors ..........43 Connect DHW components..........44 Connect meteo sensor ............46 Connect light and blind actuators ........46 Connect the switching group relay ........47 Connect door contacts ............48 Connect fault inputs ............48 4/88 Siemens Synco 900 CE1C2707en Building Technologies Contents 05.07.2007...
  • Page 5 Minimum valve position Comfort ........67 Room controller settings .............68 P-band Xp ................68 Integral action time Tn............68 Derivative action time Tv............69 Neutral zone...............69 Switching differential 2-position..........70 Actuator running time ............70 DHW...................71 Frost protection setpoint.............71 5/88 Siemens Synco 900 CE1C2707en Building Technologies Contents 05.07.2007...
  • Page 6 Data backup ................79 System limits ..................79 Communication ................80 Maintenance / service ..............80 Peripheral devices ..............80 Restore factory settings .............80 Manual control of the radiator control actuator ....80 Disposal ..................80 Index ...................81 6/88 Siemens Synco 900 CE1C2707en Building Technologies Contents 05.07.2007...

  • Page 7: Safety Notes

    • If a device is defective or damaged, immediately dis- connect it from power and replace it. • Application-related technical data are only guaran- teed in connection with the Siemens Synco 900 sys- tem. When using products of other manufacture not specified by Siemens, user must ensure functionality.

  • Page 8: Mounting And Installation

    • Larger items made of steel or construction elements with me- tal meshes (e.g. special glass or concrete), or metal foils in thermal insulation materials, mirrors or metal-coated heat absorbing glass, can have an impact on the range 8/88 Siemens Synco 900 CE1C2707en Building Technologies Mounting and installation 05.07.2007...

  • Page 9: Dimensions Of The Central Apartment Unit

    If greater distances are to be covered, RF repeaters should be used Dimensions of the central apartment unit Dimensions in mm Dimensions of the base Dimensions in mm 9/88 Siemens Synco 900 CE1C2707en Building Technologies Mounting and installation 05.07.2007...

  • Page 10: Mounting Procedure

    The base must be secured to the wall with at least 3 screws. To de- termine the positions of the holes in the wall, hold the base horizon- tally against the wall and mark the required positions. 10/88 Siemens Synco 900 CE1C2707en Building Technologies Mounting and installation 05.07.2007...
  • Page 11 Fit the base Secure the base to the wall using at least 3 fixing screws. Wiring Wiring is described under “Connection terminals / wiring“ (refer to page 12). 11/88 Siemens Synco 900 CE1C2707en Building Technologies Mounting and installation 05.07.2007...

  • Page 12: Electrical Installation Of The Central Apartment Unit

    Connect the low-voltage and mains voltage cables to the respective terminals on the base. Run the cables under the straps provided and – after connection – ensure strain relief with the help of cable ties. 12/88 Siemens Synco 900 CE1C2707en Building Technologies Mounting and installation 05.07.2007...
  • Page 13 Operating voltage, live conductor AC 230 V Protective extra low-voltage CE-, CE+ Connection data bus KNX TP1- and KNX TP1+ Ground for universal input Universal input Strap for cable ties 13/88 Siemens Synco 900 CE1C2707en Building Technologies Mounting and installation 05.07.2007...

  • Page 14: Commissioning The System

    The unit is switched as soon as power is applied to it. During the period of time the hour glass is displayed, a short function test is made. 14/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 15: Change To The Expert Level

    Confirm entry of the password by pressing the Menu/ok button. If no button is pressed for a certain period of time, the central apartment unit automatically returns to the user level. 15/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 16: Select The Commissioning Menu

    For rooms with no heating but equipped with window contacts or a smoke detector Usually, the standard room types suffices. Customize settings only in plants with greatly differing control behavior. 16/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 17 Radiator heating fast Floor heating slow Floor heating fast User-defined No heating --- (inactive) …………….. Radiator heating slow Radiator heating fast Floor heating slow Floor heating fast User-defined No heating 17/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 18 Radiator heating fast Floor heating slow Floor heating fast User-defined No heating --- (inactive) …………….. Radiator heating slow Radiator heating fast Floor heating slow Floor heating fast User-defined No heating 18/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 19: Configure Dhw Charging

    Via RF DHW sensor connected to universal input B of an RRV91… heating circuit controller B (local) DHW sensor connected to universal input B of the central apartment unit 19/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 20 Electric heater connected to relay output Q1 of the central apartment unit Main menu > Commissioning > Basic configuration > DHW > El immersion heater: Factory setting Your setting Via RF Q1 (local) 20/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 21: Configure The Switching Groups

    Soft keys of switching group 1 2A, 2B Soft keys of switching group 2 3A, 3B Soft keys of switching group 3 4A, 4B Soft keys of switching group 4 21/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 22 Your setting Switching group group name Info Switch Blind ………………… Scene Info Info Switch Blind ………………… Scene Info Info Switch Blind ………………… Scene Info Info Switch Blind ………………… Scene Info 22/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 23 The output signal can be forwarded to the following types of devices: Switching group function Supported types of actuators / suppliers Switch and dim actuators: - Siemens: GAMMA wave Switch, Dim - Hager: tebis Funk - Any brand: S-Mode KNX TP1 *...

  • Page 24: Configure Doors

    A name can be assigned to each door. Main menu > Commissioning > Basic configuration > Doors > Door X > Door X: Activate a door by setting the function to "Active": 24/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 25: Configure Light Status Indication

    * The connection of the relevant S-Mode objects of the central apartment unit to the relevant S-Mode devices on KNX TP1 is made with a commis- sioning tool (ETS) 25/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 26: Display Fault Status Message Bus

    * The relevant S-Mode objects of the central apartment unit are connected to the relevant S-Mode devices on KNX TP1 with the help of a commis- sioning tool (ETS) 26/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 27: Configure Inputs

    Activate the respective input function by stating from where the cen- tral apartment unit receives the signal of the input terminal (---, Via RF / S-Mode, B (local)). 27/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 28 * The connection of the relevant S-Mode objects of the central apartment unit to the relevant S-Mode devices on KNX TP1 is made with a commis- sioning tool (ETS) 28/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 29 B (local) For the cooling function to become active when the input terminal closes, Parameter ”2-pipe heating / cooling system“ must be activated (setting ”Yes“, refer to page 38). 29/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 30 S-Mode devices on KNX TP1 is made with a commis- sioning tool (ETS) Main menu > Commissioning > Basic configuration > Inputs > Absence: Factory setting Your setting Via RF / S-Mode B (local) 30/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 31: Configure Outputs

    Outputs can be used to transmit signals to external components. Activate the required output function by defining how the central apartment unit delivers the signal (---, Via RF, Q1 (local)). 31/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 32 0..10 V heat demand output Main menu > Commissioning > Basic configuration > Outputs > Heat dem 0..10 V: Factory setting Your setting Via RF 32/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 33 Heating circuit valve (2-position) or radiator M2 DHW charging pump or diverting control actuator valve DHW sensor Heating circuit Electric immersion heater Room unit and / or room temperature sensor 33/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 34 S-Mode devices on KNX TP1 is made with a commis- sioning tool (ETS) Main menu > Commissioning > Basic configuration > Outputs > Summer operation: Factory setting Your setting Via RF / S-Mode Q1 (local) 34/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 35 S-Mode devices on KNX TP1 is made with a commis- sioning tool (ETS) Main menu > Commissioning > Basic configuration > Outputs > Status output: Factory setting Your setting Via RF / S-Mode Q1 (local) 35/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 36: Configure Rf Repeaters

    RF repeater required (1…3) and change the setting from “---“ to ”Active“. Main menu > Commissioning > Basic configuration > RF repeater > Repeater X: Repeater 1 Repeater 2 Repeater 3 Factory setting Your setting Active Active Active 36/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 37: Configure Info Pages

    Decide whether progression of the atmospheric pressure (info page) should be displayed. Main menu > Commissioning > Basic configuration > Info pages > Progress air press: Factory setting Your setting 37/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 38: Configure Cooling Mode

    Room X > Connect device: Confirm entry on submenu “Connect device“ by pressing the Menu/ok button. To make the connection, press the binding button on the de- vice to be connected. 38/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 39 Now, keep multifunction button F on the room unit depressed until the binding symbol starts blinking. Then, release the button again. F = multifunction button 39/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 40 When all devices of the room are connected, close the binding process by pressing the Menu/ok button. The device is now connected and performs normal operation. 40/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 41 After successful establishment of the connection, the radiator control actuator restarts and automatically starts self-calibration (refer to ”Calibration of radiator control actuator“ below). The actuator is now connected and performs normal operation. 41/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 42 LED indicates the status of the re- spective channel. Example: Heating circuit controller RRV912 RRV912 NC 3P NO = multifunction button LED = light emitting diode CH = channel selection button 42/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 43: Connect Smoke Detectors

    The DELTA reflex smoke detector is automatically switched on as soon as the inserted batteries supply power. For detailed information, refer to the documentation supplied with the smoke detector. 43/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 44: Connect Dhw Components

    A successful connection is shown on the display of the central apart- ment unit and be confirmed with a beep. Close the binding process by pressing the Menu/ok button. 44/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 45 A successful connection is shown on the display of the central apart- ment unit and be confirmed with a beep. Close the binding process by pressing the Menu/ok button. 45/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 46: Connect Meteo Sensor

    Otherwise, the actuators are not correctly powered, which means that they cannot be connected. On the central apartment unit, select the switching group which you want to assign actuators: 46/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 47: Connect The Switching Group Relay

    A successful connection is shown on the display of the central apart- ment unit and be confirmed with a beep. Close the binding process by pressing the Menu/ok button. 47/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 48: Connect Door Contacts

    Fault output X (1 - 2) > Connect device: Confirm subentry “Connect device“ by pressing the Menu/ok button. To make the connection, you is prompted to press the binding button on the device to be connected. 48/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 49: Connect Inputs

    Select universal input B with the channel selection button (CH) on the heating circuit controller. The LED of the selected channel blinks. If the selected channel is not yet connected, the connection LED flashes. 49/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 50 A successful connection is shown on the display of the central apart- ment unit and be confirmed with a beep. Close the binding process by pressing the Menu/ok button. 50/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 51: Connect Outputs

    A successful connection is shown on the display of the central apart- ment unit and be confirmed with a beep. Close the binding process by pressing the Menu/ok button. 51/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 52 A successful connection is shown on the display of the central apart- ment unit and be confirmed with a beep. Close the binding process by pressing the Menu/ok button. 52/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 53 A successful connection is shown on the display of the central apart- ment unit and be confirmed with a beep. Close the binding process by pressing the Menu/ok button. 53/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 54: Connect Hager Tebis Devices

    Successful dispatch of the respective telegrams is displayed for a short moment on the central apartment unit. For detailed information on commissioning Hager tebis com- ponents, refer to the documentation covering Hager tebis products. 54/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 55: Connect Rf Repeaters

    The RF repeater is now connected and performs its normal operation. If the binding process with the central apartment unit proved unsuccessful, blinking of the LED changes to flashing after 1 minute (status indication of unbound operation). 55/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...
  • Page 56 10 seconds. To confirm a successful connection, the central apartment unit delivers a beep. For detailed information on commissioning the GAMMA wave components, refer to the documentation covering the GAMMA wave products. 56/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 57: Testing Radio Connections

    Main menu > Commissioning > Wiring test > Switching group relay Faults (fault input 1…4, fault outputs 1 and 2): Main menu > Commissioning > Wiring test > Faults: 57/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 58: Removing Devices

    A successful Disconnection is shown on the display of the central apartment unit and be confirmed with a beep. Close the disconnec- tion process by pressing the Menu/ok button. 58/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 59: Displaying The Device List By Function

    Also available for viewing are device number, device type and the KNX-ID of the individual devices. Main menu > Commissioning > Device list > Device X: To view detailed device data, press the Menu/ok button. 59/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 60: Remove Devices From The Device List

    Konnex terminal of the central apartment unit • If several or other devices are connected to the bus, bus power supply by the central apartment unit must be switched off 60/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 61: Programming Mode

    Hence, for the plant user, operation is the same as that on the clock time master. Main menu > Commissioning > Bus communication > Time of day/date > Rem set clock slave: Factory setting Your setting 61/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 62: Calendar Zone (Holidays And Special Days)

    When using setting “Autonomous“, the central apartment unit does not receive or send any time switch data. When using setting “Master“, the time switch data is distributed in the DHW zone for 62/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 63: Set The Distribution Zone

    When you confirm this message Caution! by pressing the Menu/ok button, Plant starts the plant is put into operation according to the new settings and the display returns to the ”Main menu”. 63/88 Siemens Synco 900 CE1C2707en Building Technologies Commissioning the system 05.07.2007...

  • Page 64: Function Settings

    Enter the required new password (between 0 and 9999) using the following path and confirm it by pressing the Menu/ok button. Main menu > Settings > Passwords > Expert: Factory setting Your setting 64/88 Siemens Synco 900 CE1C2707en Building Technologies Function settings 05.07.2007...

  • Page 65: Heating

    Valve override must be manually switched off again. Otherwise, room temperature control stays deactivated. During the period of time valve override is active, status message ”Valve override active“ is displayed. 65/88 Siemens Synco 900 CE1C2707en Building Technologies Function settings 05.07.2007...

  • Page 66: Room Temperature Rise

    (0..100 %) when the plant is switched to cooling mode or summer operation. The amount of cooling energy drawn by the individual rooms can thus be influenced. In rooms with high humidity levels, there is risk of condensa- tion. 66/88 Siemens Synco 900 CE1C2707en Building Technologies Function settings 05.07.2007...

  • Page 67: Minimum Valve Position Comfort

    Comfort periods, even if the room temperature is sufficiently high. It is accepted that in such cases the room might get overheated. Main menu > Heating > Room X > Room settings > Min valve pos comf: Factory setting Your setting 67/88 Siemens Synco 900 CE1C2707en Building Technologies Function settings 05.07.2007...

  • Page 68: Room Controller Settings

    5,400 s 5,400 s 5,400 s 5,400 s Setting Tn Room number Room name Factory setting 5,400 s 5,400 s 5,400 s 5,400 s 5,400 s 5,400 s Setting Tn 68/88 Siemens Synco 900 CE1C2707en Building Technologies Function settings 05.07.2007...

  • Page 69: Derivative Action Time Tv

    0.1 K 0.1 K 0.1 K 0.1 K Setting Neut. Room number Room name Factory setting 0.1 K 0.1 K 0.1 K 0.1 K 0.1 K 0.1 K Setting Neut. 69/88 Siemens Synco 900 CE1C2707en Building Technologies Function settings 05.07.2007...

  • Page 70: Switching Differential 2-Position

    150 s 150 s 150 s 150 s Setting ALZ Room number Room name Factory setting 150 s 150 s 150 s 150 s 150 s 150 s Setting ALZ 70/88 Siemens Synco 900 CE1C2707en Building Technologies Function settings 05.07.2007...

  • Page 71: Dhw

    Legionella protection time Define the time of day (00:00..24:00) the legionella function should be started. Main menu > DHW > Legionella function > Legio prot time: Factory setting 05:00 Your setting 71/88 Siemens Synco 900 CE1C2707en Building Technologies Function settings 05.07.2007...

  • Page 72: Legionella Protection Period

    (1..20 K) set here. Charging is stopped as soon as the DHW setpoint is reached again. Main menu > DHW > Settings > Switching diff: Factory setting Your setting 72/88 Siemens Synco 900 CE1C2707en Building Technologies Function settings 05.07.2007...

  • Page 73: Charging Time Max

    One-time manual forced charging of the DHW storage tank can also be triggered by a long push on the central apartment unit’s DHW button. During manual forced charging, the DHW symbol on the display blinks. 73/88 Siemens Synco 900 CE1C2707en Building Technologies Function settings 05.07.2007...

  • Page 74: Setpoint Boost Dhw Charging

    ”Auto“. Main menu > DHW > Settings > Su op el imm heater: Factory setting With time switch Your setting Without time switch With time switch 74/88 Siemens Synco 900 CE1C2707en Building Technologies Function settings 05.07.2007...

  • Page 75: Switching Groups

    Sunday after that date is brought forward from 02:00 ( winter time) to 03:00 (summer time), or set back from 03:00 (summer time) to 02:00 (winter time). 75/88 Siemens Synco 900 CE1C2707en Building Technologies Function settings 05.07.2007...

  • Page 76: Faults

    A data set can be created with the ACS service tool and copied to the central apartment unit. In that case, the file name of the data set appears on the following menu line: Main menu > Settings > Texts > File name: 76/88 Siemens Synco 900 CE1C2707en Building Technologies Function settings 05.07.2007...

  • Page 77: Business Card Title And Lines 1 - 4

    Main menu > Settings > Heat request > Flow temp max: Factory setting 40 °C Your setting This setting only acts on the temperature request from the space heating system. It does not restrict the DHW tempera- ture request. 77/88 Siemens Synco 900 CE1C2707en Building Technologies Function settings 05.07.2007...

  • Page 78: Temperature Request Winter Operation

    Threshold value of temperature request (temperatures below this level are interpreted as “No demand for heat”) Factory setting Your setting Temperature request at 0 V 0 °C Temperature request at 10 V 100 °C Temperature request threshold 0 °C 78/88 Siemens Synco 900 CE1C2707en Building Technologies Function settings 05.07.2007...

  • Page 79: Data Backup

    (one lead controller, 0…5 lag controllers) or heating circuit controller channels Window contacts Smoke detector Radiator control actuators and heating circuit controllers can- not simultaneously be used in the same room. 79/88 Siemens Synco 900 CE1C2707en Building Technologies System limits 05.07.2007...

  • Page 80: Communication

    Local and currently valid legislation must be complied with. Ex- hausted batteries must be disposed of in compliance with the relevant environmental regulations. 80/88 Siemens Synco 900 CE1C2707en Building Technologies Communication 05.07.2007...

  • Page 81: Index

    ..46, 54 central apartment unit..9 meteo sensor....46 disconnect device ....58 RF repeaters....55 disposal......80 room components..38 distribution zones ....63 smoke detectors ...43 switching group relay..47 81/88 Siemens Synco 900 CE1C2707en Building Technologies Index 21.07.2006...
  • Page 82 ......16 limitation setpoint ....65 unit proportion ....66 manual control SSA955 ..80 RRV912 ......42 max flow temperature..77 RRV918 ......42 maximum charging time ..73 running time actuator ..70 82/88 Siemens Synco 900 CE1C2707en Building Technologies Index 05.07.2007...
  • Page 83 ... 36 name ......21 relay......24 windows / doors ....37 symbols ........3 winter operation ....78 system limits.......79 winter time start....75 system pump......74 wiring test......57 temp request Xp ........68 83/88 Siemens Synco 900 CE1C2707en Building Technologies Index 21.07.2006...
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  • Page 85 85/88 Siemens Synco 900 CE1C2707en Building Technologies 05.07.2007...
  • Page 86 86/88 Siemens Synco 900 CE1C2707en Building Technologies 05.07.2007...
  • Page 88 Siemens Switzerland Ltd © 2006 Siemens Switzerland Ltd Building Technologies Group Subject to change International Headquarters 0678 Gubelstrasse 22 CH-6301 Zug Phone +41 41-724 24 24 Fax +41 41-724 35 22 www.siemens.com/sbt 7 4 3 1 9 0 5 3 2 0...

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