Siemens Synco 900 User manual

Synco™900
Operating Instructions
Edition 1.0
Controller series 1
CE1B2707en
19.07.2006
Building Technologies
HVAC Products

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HVAC Products Contents 19.07.2006
We congratulate you …
… on the selection of the Siemens Synco 900 system and thank you
for your purchase of the central apartment unit!
The present Operating Instructions describe how to operate the cen-
tral apartment unit and the other system components.
Symbols used
The symbols appearing on the display of the central apartment unit
are explained in section “Symbols on the display” on page 18. In
addition, the following symbols are used in this document:
This symbol draws your attention to important information
which must be observed to ensure safe operation of plant.
The info symbol refers to additional information, notes and
practical tips regarding settings and operation of the various
units and the system.
This symbol refers to disposal notes.
Siemens Schweiz AG
Building Technologies Group
International Headquarters
HVAC Products
Gubelstrasse 22
CH-6301 Zug
Tel. [phone]
Fax [phone]
www.sbt.siemens.com
© 2006 Siemens Switzerland Ltd
Subject to alteration

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Contents
Safety notes......................................................................................8
System overview ..............................................................................9
System functions ..........................................................................9
Central unit...........................................................................9
Heating control .....................................................................9
DHW heating......................................................................10
Release of ventilation.........................................................10
Weather station..................................................................11
Light and blind control ........................................................11
Supervisory functions.........................................................12
Alarms................................................................................12
Supervision of devices .......................................................12
System components ...................................................................13
Central apartment unit QAX910 ....................................................15
Operating elements ....................................................................15
Display........................................................................................17
Operation....................................................................................20
Quiescent picture ...............................................................20
Info pages ..........................................................................20
Menu level..........................................................................21
Setting principle..................................................................21
Access levels .....................................................................23
Settings ......................................................................................24
General.......................................................................................24
Absence .............................................................................24
Heating .......................................................................................25
Apartment timer function ....................................................25
Apartment operating mode.................................................25
Apartment operating mode switch......................................26
Summer operation of heating.............................................26
State of winter operation / summer operation ....................27
Beginning of summer / end of summer ..............................27
Summer / winter changeover temperature .........................27
Antilime function.................................................................27
Room operating modes......................................................28
State of room operating mode............................................28
Reason for room operating mode.......................................29
Room operating mode during absence ..............................29
Room temperature setpoints..............................................30
Readjustment of room unit .................................................30

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Setting the time switch of a room .......................................31
Actual value of the room temperature ................................32
Room temperature setpoint................................................33
Setpoint limitation...............................................................33
Valve position.....................................................................33
Apartment timer influence ..................................................33
Optimum start / stop control ...............................................34
Room temperature supervision ..........................................34
Window airing function .......................................................35
Silent mode ........................................................................35
Actuator calibration ............................................................36
Sensor readjustment ..........................................................36
DHW...........................................................................................37
DHW operating mode.........................................................37
Forced DHW charging........................................................37
State of DHW operating mode ...........................................37
Reason for DHW operating mode ......................................37
DHW operating mode during absence ...............................38
DHW temperature setpoint.................................................38
DHW time switch................................................................38
Actual value of the DHW temperature................................39
DHW temperature setpoint.................................................39
Operating state of charging pump
and electric immersion heater ......................................39
Plant operation...................................................................39
Reason for DHW plant operation .......................................39
Limitation of charging time .................................................39
Changeover to electric immersion heater...........................40
Supervision of the DHW temperature.................................40
Switching groups ........................................................................40
Operating the switching groups..........................................40
Scenes ...............................................................................41
Triggering switching groups via an event ...........................42
Time switch for switching groups .......................................44
Time switch for simulation of presence ..............................44
Activating simulation of presence.......................................45
Holidays/special days .................................................................47
Setting holidays / special days ...........................................47
Holidays and absence simultaneously ...............................48
Room operating mode during holidays...............................48
DHW operating mode during holidays................................48
Time settings ..............................................................................49
Date / time of day ...............................................................49

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Faults..........................................................................................49
Error / fault status messages .............................................49
Fault status messages bus ................................................49
Acknowledging faults .........................................................50
Inputs / outputs ...........................................................................50
Displaying input signals......................................................50
Displaying output states .....................................................50
Settings ......................................................................................51
Language ...........................................................................51
Elevation above sea level ..................................................51
Time-of-day format.............................................................51
Backlit display / display contrast.........................................51
Display format ....................................................................52
Temperature display ..........................................................52
Password for the service level............................................53
Direct selection of info pages .............................................53
Fault inputs 1 – 4................................................................54
Fault outputs 1 and 2 .........................................................55
Release of supervision.......................................................56
Supervision delay...............................................................57
Event buzzer and status output..........................................57
Signal duration ...................................................................57
Plant name.........................................................................58
Room names 1 – 12...........................................................58
Switching group names 1 – 8.............................................58
Lamp names 1 – 4 .............................................................58
Info lines.............................................................................58
Room unit QAW910........................................................................59
Operation....................................................................................59
Room operating modes......................................................59
Room timer function ...........................................................60
Readjustment of the room temperature setpoint ................61
Display........................................................................................61
Error messages..................................................................63
Maintenance ...................................................................................64
Monitoring the batteries ..............................................................64
Room unit QAW910 ...........................................................64
Door / window contact wave AP 260..................................64
DELTA reflex smoke detector ............................................64
Manual capacity check.......................................................64
Replacing the batteries...............................................................65

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Room unit QAW910, room sensor QAA910
and meteo sensor QAC910 ..........................................65
Radiator control actuator SSA955......................................66
Door / window contact wave AP 260
and DELTA reflex smoke detector................................67
Binding tests ...............................................................................68
Function button on the room unit, room sensor, meteo
sensor, radio repeater and radiator control actuator.....68
Function button on the heating circuit controllers RRV912
and RRV918.................................................................69
Maintenance and cleaning..........................................................69
Disposal ..........................................................................................69

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HVAC Products Safety notes 19.07.2006
Safety notes
Product liability
•The products may only be used in building services
plant and only on the applications described
•Local safety regulations (installation, etc.) must be com-
plied with
•Do not open the devices. If not observed, warranty by
Siemens becomes void
•If a device is defective or damaged, immediately dis-
connect it from power and replace it
•Application-related technical data are only guaranteed
in connection with the Siemens Synco 900 system.
When using products of other manufacture not specified
by Siemens, functionality must be ensured by the user.
In that case, Siemens will not render any services and
will not provide any warranty

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System overview
System functions
The Synco 900 system offers you a host of choices. In addition to
room climate and DHW heating control, the system enables you to
control lights and blinds and to monitor fire detectors and door /
window contacts.
Central unit
Central apartment unit QAX910
The heart of the system is the QAX910 central
apartment unit. It facilitates operation of the
entire system and ensures communication
between the different devices.
Heating control
The central apartment unit has 12 individually adjustable 7-day time
switches which are used to operate up to 12 different rooms.
Each of these time switches can be programmed for operation at 3
different levels (Comfort, Precomfort and Economy) with 6 switching
times.
All rooms are combined to one apartment for which the operating
mode and a holiday / special day program can be set.
The central apartment unit collects the heat requests from the various
rooms to deliver the total heat request to the heat generation con-
troller.
It transmits the actual values of the room temperatures and the room
temperature setpoints to the heating circuit controllers and radiator
control actuators which then calculate the positioning signals required
for the actuators.
The positioning signals for the multifunctional relays of the heating
circuit controllers are generated by the central apartment unit.
For room temperature control, the following system components are
available:
Room unit QAW910
On the room unit, the required room operating mode can
be selected, the room setpoint temperature readjustment
can be made, and the room timer function can be set.
The room unit also acquires the current room tempera-
ture. All data are transmitted to the central apartment unit
via radio.
Room temperature sensor QAA910
The sensor acquires the room temperature and sends it
to the central apartment unit via radio signal.

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Heating circuit controllers RRV912 and
RRV918
The controllers receive the setpoints and actual
values of the various rooms from the central
apartment unit (via radio signal) and forward
the resulting positioning signals to the wire-
bound actuators.
They also facilitate the direct connection of an
apartment pump and of DHW heating.
Radiator control actuator SSA955
The actuator receives the setpoint and the
actual value (provided a room sensor or room
unit is present) of the respective room from the
central apartment unit via radio signal and re-
adjusts the radiator valve accordingly.
If no room sensor or room unit is installed, the
radiator control actuator uses its own measured
value of the room temperature as the actual
value.
Door / window contact wave AP 260
When a door or window is left open, the stroke
of the radiator valves in the respective room will
be limited to the current position in order not to
waste energy. The function acts on the wire-
bound actuators used with the RRV912 /
RRV918 heating circuit controllers and the wire-
less SSA955 radiator control actuators.
DHW heating
The central apartment unit controls DHW heating of a locally con-
nected DHW storage tank or facilitates remote operation of a DHW
storage tank connected to the heat generation controller or some
other central apartment unit.
For that purpose, the central apartment unit is equipped with a DHW
7-day time switch with 6 switching times for changeover between
Normal mode and Reduced mode.
The central apartment unit can also be used for triggering manual
forced charging of the DHW storage tank. The current DHW tempera-
ture appears on the display of the central apartment unit.
Release of ventilation
Relays can be used to enable or disable ventilation stages. Venti-
lation is enabled with the help of switching groups.

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Weather station
The central apartment unit receives the outside temperature and the
atmospheric pressure from the meteo sensor.
Meteo sensor QAC910
The meteo sensor acquires the outside temperature
and the absolute atmospheric pressure and transmits
both via radio signal to the central apartment unit.
The current measured values of outside temperature and atmos-
pheric pressure as well as the pressure trend can be shown in the
quiescent picture. The change of atmospheric pressure over the last
3 hours is displayed with an arrow.
In addition, based on the changes and the absolute value of the
atmospheric pressure, the weather trend (sunny, partly cloudy, rainy)
is determined and shown with a symbol in the quiescent picture.
The progression of outside temperature and atmospheric pressure
over the last 24 hours can be made to appear on 2 info pages.
Light and blind control
Light control
Connected lamps can be dimmed and switched either via the central
apartment unit or external switches (transmitters).
All the various light settings can be stored as a scene and retrieved at
a later point in time, if required.
In addition to manual light settings, the settings can also be made via
the built-in time switch, presence simulation or events.
Blind control
Using the central apartment unit or external switches (transmitters),
blinds can be adjusted in steps, or they can be fully closed or opened
by pressing a button.
All blind positions (fully open or fully closed) can be stored as a scene
and retrieved at a later point in time, if required.
In addition to manual blind settings, the settings can also be made via
the built-in time switch or events.
The light settings and blind positions can be jointly stored as a
scene or jointly readjusted when calling up a scene.

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Operation of lights and blinds
The lights and blinds can be controlled with the central apartment
unit’s softkeys.
Prerequisite for this operation is that the light and blind actua-
tors used have a binding facility for KNX-RF
(Siemens GAMMA wave or Hager tebis TX Funk) or KNX TP1.
Supervisory functions
The central apartment unit monitors the connected window contacts,
door contacts and smoke detectors.
Door / window contact wave AP 260
The door / window contacts detect an open door
or open window and transmit this information via
radio signal to the central apartment unit. They
can also be used as detached digital inputs (e.g.
for monitoring the door of a domestic freezer).
DELTA reflex smoke detector with smoke
detector module wave UNI M 255
The smoke detector detects instantly the smoke
generated by a fire and sets off an alarm (flash-
ing LED and acoustic signal on the device,
smoke signal via radio to the central apartment
unit).
Alarms
If a fault occurs (smoke detector, window contact, heating, etc.), it will
be shown on the display of the central apartment unit. In addition, the
central unit can generate an acoustic signal and forward it via bus
(KNX TP1), or it can close a contact for activating an external signal
source.
Supervision of devices
The connected wireless, communicating devices are monitored at
regular intervals. When there is no transmit signal or when batteries
are close to exhaustion, an error message will appear on the display
of the central apartment unit.

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System components
The following components can be used in the Synco 900 system or
can be combined with it:
Synco
QAX910 Central apartment unit
QAW910 Room unit
QAA910 Room temperature sensor
QAC910 Meteo sensor
RRV918 Heating circuit controller,
controls up to eight 2-position
actuators
RRV912 Heating circuit controller,
controls one 3-position or
two 2-position controllers
SSA955 Radiator control actuator
ERF910 RF repeater (retransmitter)

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GAMMA wave
DELTA reflex smoke detector with smoke detector
module wave UNI M 255
Door and window contact wave AP260 (wireless)
GAMMA wave light and blind actuators, switchable
sockets and handheld transmitters can also be
used
Hager tebis TX Funk
Light and blind actuators from Hager can be used
The central apartment unit can also control light and blind
actuators via KNX TP1 (S-Mode). In that case, configuration
with the ETS (EIB tool software) is required.

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Central apartment unit QAX910
Operating elements
All operating elements are located on the front of the unit.
The buttons and softkeys provide the following functions:
DHW button
For selecting the DHW operating mode (Auto / Normal /
Reduced / Protection), and for manually triggering one-time
forced charging of the DHW storage tank (long push).
Absence button (coming / going)
For triggering the selected scenario for absence (heating,
DHW, light and blind control, supervisory functions, presence
simulation), or for resuming presence mode.
Apartment timer button
For selecting and activating the timer function for specific
rooms. During the periods of time the timer function is active,
the rooms are heated to the Comfort setpoint.
Mode button
For selecting the heating mode for the apartment (Auto /
Comfort / Precomfort / Economy / Protection).
Info button
For scrolling through the info pages, and for calling up Help
text on the menu level.
Arrow up button
For navigating upward within a menu level, for scrolling
backward on the info pages, and for setting (increasing)
values.

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Arrow down button
For navigating downward within a menu level, for scrolling
forward on the info pages, and for setting (decreasing)
values.
Esc button
For navigating backward to the next higher menu level, for
quitting the main menu, and for canceling entry of a value.
Menu / ok button
For entering the main menu, for navigating to a lower menu
level, and for confirming entry of a value.
Pair of softkeys 1 - 4
For triggering the switching group functions defined during
commissioning (e.g. switching or dimming lights), or for
calling up predefined info pages.
1A, 1B Softkeys 1A and 1B
2A, 2B Softkeys 2A and 2B
3A, 3B Softkeys 3A and 3B
4A, 4B Softkeys 4A and 4B

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Display
Backlit display
When pressing any of the buttons, the backlit display will be switched
on for a certain period of time.
When pressing the Esc button, the Menu / ok button, the
Arrow button or Info button, the backlit display is switched on
with no impact on the display itself.
The brightness of the backlit display can be adjusted to suit
individual needs (refer to page 51).
Display
The display offers a choice of presentations. The example below
shows a menu.
Main menu
Heating…
Switching groups…
Holidays/special days…
Time of day/date…
Menu symbol: Indicates the menu
on which you are
Menu title: Indicates the menu on
which you are
Cursor position: Appears as a
black bar with inverse text
Extension: Further entries follow
Scroll bar: Shows the
position on the menu
list
Access level: The
symbol indicates the
access level on which
you are

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Navigating on the display / information about paths
Navigation is made possible with the 2 Arrow buttons, the Menu / ok
button and the Esc button (refer to description of the operating ele-
ments on page 15).
In the description of functions, the location of the function is given in
Italics in the form of a path.
Example: Main menu > Time of day/date
To reach the function from the quiescent picture, press the Menu / ok
button first (you reach the main menu). Then, select menu entry
“Time of day/date“ with the Arrow buttons and press the Menu / ok
button.
You are now in function “Time of day/date“ and you can select the
parameter to be changed (time of day, date, year) using the Arrow
buttons. The parameter setting principle is described on page 21 ff.
You return to the quiescent picture by pressing the Esc button
several times.
Symbols on the display
Heating states / cooling mode
Comfort mode Automatic operation
Precomfort mode Manual operation
Economy mode Summer operation
Protection Cooling mode
Apartment timer
function active Apartment pump in operation
Setpoint limitation
DHW operating states
Normal operation Automatic operation
Reduced operation Manual operation
DHW Protection Flashing: Manual
forced charging of
DHW active
DHW heating enabled
Other operating states
Fault Window open
Flashing: Fault,
acknowledgement
required
Flashing: Monitored
window open
Holiday mode Special day
Absence active

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Temperatures, atmospheric pressure and weather trend
Room temperature Atmospheric pressure
steady
Outside temperature Atmospheric pressure
rising
Weather trend: Sunny Atmospheric pressure
strongly rising
Weather trend: Partly
cloudy Atmospheric pressure falling
Weather trend: Rainy Atmospheric pressure
strongly falling
The symbols used for the weather trend only indicate the
direction in which the weather will change.
Assignment of softkeys
Switching group on Light on / brighter
Switching group off Light off / darker
Scene Blinds opening
Selection of info pages Blinds closing
Device directory
Device in order Device faulty
Battery low
Menu levels
Main menu Faults
Heating Inputs / outputs
DHW Settings
Switching groups Device information
Holidays/special days Data backup
Time of day/date Commissioning
Access levels
Service level Expert level

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Operation
Quiescent picture
The display shows the quiescent picture as long as no button is
pressed. There are 6 formats of quiescent pictures with different
degrees of detail available. The settings required for the desired
quiescent picture format are described on page 52 ff.
Info pages
The info pages give an overview of the plant’s most important data.
Values cannot be readjusted on the info pages.
The info pages can be called up with the Info button. Each time the
Info button is pressed the next info page appears. The Arrow buttons
can be used to scroll forward and backward. To return to the quies-
cent picture, press the Esc button.
When you are on the info level,
the respective symbol appears in
the corner at top left.
At top right, the current info page plus the total number of available
info pages are displayed.
The following info pages are available:
Progression of outside temperature (configurable)
Progression of atmospheric pressure (configurable)
Light state (configurable)
Apartment
Room (configurable)
…
…
DHW (configurable)
Business card (configurable)
Assignment of buttons
(always, except when quiescent picture format = 5)
Device state
Fault status message bus (configurable)
The type and number of available info pages depend on your
plant (number of rooms, switching groups, etc.).
The info pages can also be called up via appropriately
assigned softkeys (refer to page 40).