Siemens RDG200KN Operator's manual

RDG200KN & RDG260KN
Room thermostats with KNX communications
Basic Documentation
A6V11545892_en--_a Smart Infrastructure
2020-11-16

2 | 150 A6V11545892_en--_a
Table of contents
1 About this document............................................................................. 5
1.1 Revision history ...........................................................................................5
1.2 Reference documents..................................................................................5
1.3 Before you start ...........................................................................................6
1.3.1 Trademarks ..................................................................................6
1.3.2 Copyright ......................................................................................6
1.3.3 Quality assurance .........................................................................6
1.3.4 Document user/request to the reader ............................................7
1.4 Target audience, prerequisites.....................................................................7
1.5 Glossary......................................................................................................7
2 Overview............................................................................................. 8
2.1 Types ..........................................................................................................8
2.2 Functions.....................................................................................................8
2.3 Accessories...............................................................................................10
2.4 Equipment combinations............................................................................11
2.5 Integration via KNX bus .............................................................................14
3 Notes.................................................................................................16
3.1 Mounting and installation ...........................................................................16
3.2 Commissioning..........................................................................................17
3.3 Operation ..................................................................................................19
3.4 Remote operation ......................................................................................21
3.5 Disposal ....................................................................................................21
3.6 Cyber security disclaimer...........................................................................21
4 Functions ...........................................................................................22
4.1 Temperature control ..................................................................................22
4.2 Operating modes .......................................................................................23
4.2.1 Different ways to influence operating mode.................................24
4.2.2 Communication examples ...........................................................29
4.3 Room temperature setpoints......................................................................32
4.3.1 Description..................................................................................32
4.3.2 Setting and adjusting setpoints....................................................34
4.4 Application overview ..................................................................................37
4.4.1 Applications for fan coil systems .................................................38
4.4.2 Applications for universal systems...............................................39
4.4.3 Application for heat pump systems..............................................40
4.5 Power supply selection for RDG200KN......................................................41
4.6 Additional functions....................................................................................42
4.6.1 Sensors and changeover functions .............................................43
4.6.2 Presence detector.......................................................................45
4.6.3 Output functions..........................................................................46
4.6.4 Monitoring and limitation functions ..............................................49
4.6.5 User operation / Indication ..........................................................51
4.6.6 Humidity .....................................................................................52

A6V11545892_en--_a 3 | 150
4.6.7 Preventive operation ...................................................................55
4.6.8 NFC communication....................................................................55
4.7 Control sequences.....................................................................................56
4.7.1 Sequence overview (setting via P001).........................................56
4.7.2 Application mode ........................................................................57
4.7.3 2-pipe fan coil unit.......................................................................59
4.7.4 2-pipe fan coil unit with electric heater.........................................60
4.7.5 2-pipe fan coil unit with radiator or floor heating...........................62
4.7.6 2-pipe/2-stage heating or cooling ................................................64
4.7.7 4-pipe fan coil unit.......................................................................66
4.7.8 4-pipe fan coil unit with electric heater.........................................69
4.7.9 Chilled/heated ceiling and radiator applications ...........................71
4.7.10 Compressor applications.............................................................74
4.7.11 Applications with external AQR sensor or QMX room operator unit
...................................................................................................75
4.7.12 Setpoints and sequences ............................................................76
4.8 Control outputs ..........................................................................................78
4.8.1 Overview ....................................................................................78
4.8.2 Control output configuration (setting via DIP switches 7/8 or tool,
and P201/P203/P204).................................................................82
4.9 Fan control ................................................................................................84
4.10 Multifunctional input, digital input................................................................92
4.11 Handling system faults...............................................................................94
4.12 KNX communications.................................................................................94
4.12.1 S-Mode.......................................................................................94
4.12.2 LTE-Mode...................................................................................95
4.12.3 Zone addressing in LTE-Mode (with Synco) ................................95
4.12.4 Example of heating and cooling demand zones...........................97
4.12.5 Send heartbeat and receive timeout............................................98
4.12.6 Startup........................................................................................98
4.12.7 Heating and cooling demand.......................................................98
4.12.8 Fault and alarms function on KNX ...............................................99
4.13 Communication objects (S-Mode) ............................................................100
4.13.1 Overview ..................................................................................100
4.13.2 Description of communication objects .......................................102
4.14 Communication objects (LTE-Mode) ........................................................107
4.15 Control parameters..................................................................................108
4.15.1 Parameter setting via local HMI.................................................108
4.15.2 Setting/downloading parameter via tool.....................................109
4.15.3 Commissioning parameter via Smartphone app PCT Go...........110
4.15.4 Service level parameters...........................................................111
4.15.5 Expert level parameters with diagnostics and test......................113
5 Supported KNX tools ........................................................................ 118
5.1 ETS.........................................................................................................118
5.1.1 Setting parameters in ETS ........................................................119
5.2 ACS tool..................................................................................................121
5.2.1 Setting parameters in ACS........................................................122
5.2.2 Operation and monitoring with ACS...........................................123

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5.2.4 Operation and monitoring with OZW772....................................127
6 Connection.......................................................................................128
6.1 Connection terminals ...............................................................................128
6.2 Connection diagrams...............................................................................129
6.3 Application examples...............................................................................132
6.3.1 Humidity control........................................................................132
6.3.2 Relay functions .........................................................................135
6.3.3 Swap function and/or fan in the 2nd stage.................................137
7 Technical data ..................................................................................140
8 Dimensions ......................................................................................146
Index .......................................................................................................147

About this document
Revision history
1
A6V11545892_en--_a 5 | 150
1 About this document
1.1 Revision history
Edition
Date
Changes
S
ection
1
S
eptember
2020
First version.
All
2
November 2020
·
Update NFC communication info
·Update changeover picture
·Update the picture of DC 0…10 V fan in
“Fan control with modulating
heating/cooling control”
·Update info about geographical zones
P901 and P902
·Update ACS version info
·
4.6.8
·4.7.9.2
·4.9
·4.12.3
·1.5, 5.2
1.2 Reference documents
Subject
Ref.
Document title
Document
number
Room thermostats with KNX
communications, RDG2..KN
[1]
Mounting instructions (RDG200KN)
A6V11546008
[2]
Mounting instruction
s (RDG260KN)
A6V11844861
[3]
Operating Instruction
A6V11545973
[4]
Data
sheet
A6V11545853
KNX manual
[5]
Handbook for Home and Building
Control – Basic Principles
(EN:
https://my.knx.org/shop/product?la
nguage=en&product_type_categor
y=books&product_type=handbook
DE:
https://my.knx.org/shop/product?la
nguage=de&product_type_categor
y=books&product_type=handbook)
Synco and KNX (see
www.siemens.com/synco)
[6]
KNX bus, Datasheet
CE1N3127
[7]
C
ommunication via the KNX bus
for Synco 700, 900 and RXB/RXL,
Basic Documentation
CE1P3127
[8]
Planning and commissioning
protocol, communication Synco
700
XLS template in
HIT
[9]
RMB795B central control unit,
Datasheet
CE1N3122
[10]
RMB795B central c
ontrol unit,
Basic Documentation
CE1P3122
[11]
KNX S
-
mode data points
CE1Y3110
[12]
Product data for ETS
[13]
ETS product data compatibility list
CE1J3110
[14]
Synco Application Manual
0
-
92168en
Desigo engineering
documents
[15]
Desigo
RXB integr
ation
–
S
-
mode
CM1Y9775
[16]
Desigo RXB/RXL integration
–
Individual Addressing
CM1Y9776
[17]
Third
-
party integration
CM1Y9777
[18]
Synco integration
CM1Y9778
[19]
Working with ETS
CM1Y9779
Web server OZW772
[20]
Commissioning Instructions
CE1C570
1

About this document
Before you start
1
6 | 150 A6V11545892_en--_a
1.3 Before you start
1.3.1 Trademarks
The table below lists the third-party trademarks used in this document and their
legal owners. The use of trademarks is subject to international and domestic
provisions of the law.
Trademarks Legal owner
SyncoTM
AndroidTM Google Inc.
All product names listed in the table are registered (®) or not registered (™)
trademarks of the owner listed in the table. We forgo the labeling (e.g. using the
symbols ® and ™) of trademarks for the purposes of legibility based on the
reference in this section.
1.3.2 Copyright
This document may be duplicated and distributed only with the express permission
of Siemens, and may be passed only to authorized persons or companies with the
required technical knowledge.
1.3.3 Quality assurance
This document is prepared with great care.
●The contents of this document are checked at regular intervals.
●Any corrections necessary are included in subsequent versions.
●Documents are automatically amended as a consequence of modifications and
corrections to the products described.
Please make sure that you are aware of the latest document revision date.
If you find lack of clarity while using this document, or if you have any criticisms or
suggestions, please contact the Product Manager in your nearest branch office.
The addresses of the Siemens Regional Companies are available at
www.buildingtechnologies.siemens.com.

About this document
Target audience, prerequisites
1
A6V11545892_en--_a 7 | 150
1.3.4 Document user/request to the reader
Before using products from Siemens Industry, Inc., it is important that you read the
documents supplied with or ordered at the same time as the products (equipment,
applications, tools, and so on) carefully and in full.
We assume that persons using our products and documents are authorized and
trained appropriately and have the technical knowledge required to use our
products as intended.
More information on the products and applications is available:
●On the intranet (Siemens employees only) at
https://wse04.siemens.com/content/P0002723/SitePages/Home.aspx
●From the Siemens branch office near you
www.buildingtechnologies.siemens.com or from your system supplier
●From the support team at headquarters [e-mail]
if there is no local point of contact
Siemens assumes no liability to the extent allowed under the law for any losses
resulting from a failure to comply with the aforementioned points or for the
improper compliance of the same.
1.4 Target audience, prerequisites
This document assumes that users of the RDG2..KN room thermostats are familiar
with the ETS tool, Synco ACS tool or both and can use them.
It is also assumed that these users are aware of the specific conditions associated
with KNX.
In most countries, specific KNX know-how is conveyed through training centers
certified by the KNX Association (see www.knx.org/).
For reference documentation, see Reference documents [➙5].
1.5 Glossary
The inputs, outputs and parameters of an application can be influenced in various
ways. These are identified by the following symbols in this document:
Parameters identified by this symbol are set using ETS.
Parameters identified by this symbol are set using ACS.
Note!
Setting RDG2..KN KNX parameters is only supported by the
following tool versions:
●ETS5 or higher versions
●ACS version 13.03 or higher
Inputs and outputs identified by this symbol communicate with
other KNX devices.
They are called communication objects (CO).
The communication objects of the RDG2..KN works partly in S-
Mode, partly in LTE-Mode, and partly in both. These objects are
described accordingly.
A list of the parameters is shown in Control parameters [➙108].

Overview
Types
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2 Overview
2.1 Types
For fan coil units, universal applications and compressors in DX-type equipment
applications
Product no. Stock no. Operating
voltage
Fan Number of control outputs Built-in
sensor
3-speed DC On/Off PWM 3-pos DC On/Off
(3-wire)
Humidity,
temperature
RDG200KN S55770-T409 AC 24 V or
AC 230 V
✓ ✓ 1) 3 3 2 ‒2✓
RDG260KN S55770-T412 AC 24 V or
DC 24 V
✓ ✓ 1) ‒ ‒ ‒ 3‒ ✓
‒ ✓ 1) 2 2) ‒ ‒ ‒ ‒
1) The terminal Y50 is used as DC 0…10 V output.
2) The output is relay On/Off.
2.2 Functions
The RDG2..KN KNX room thermostats are designed for use with the following:
Fan coil units via On/Off or modulating/DC control outputs:
●2-pipe system
●2-pipe system with electric heater
●2-pipe system with radiator/floor heating
●2-pipe/2-stage system
●4-pipe system
●4-pipe system with electric heater
●4-pipe system with PICV and 6-port ball valve as changeover (RDG260KN)
Chilled/heated ceilings (or radiators) via On/Off or modulating/DC control outputs:
●Chilled/heated ceiling
●Chilled/heated ceiling with electric heater
●Chilled/heated ceiling and radiator/floor heating
●Chilled ceiling and radiator/floor heating
●Chilled/heated ceiling/2-stage
●Chilled/heated ceiling (4-pipe) with 6-port ball valve (RDG260KN)
●Chilled/heated ceiling with PICV and 6-port ball valve as changeover
(RDG260KN)
Compressor applications via On/Off control:
●Heating or cooling, compressor in DX-type equipment
●Heating or cooling, compressor in DX-type equipment with electric heater
●Heating and cooling, compressor in DX-type equipment
●Heating or cooling/2-stage, compressor in DX-type equipment
Control application

Overview
Functions
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A6V11545892_en--_a 9 | 150
●Room temperature control via built-in temperature sensor or external room
temperature/return air temperature sensor
●Room relative humidity control via built-in humidity sensor (humidity function
can be disabled.)
●Min./max. humidity control by shifting temperature setpoint and releasing
contact for dehumidifier/humidifier
●Floor heating temperature limitation
●Min. and max. supply air temperature limitation
●Selection of operating modes via operating mode button
●Button lock for all buttons independently (automatically or manually)
●Changeover between heating and cooling mode (automatic via local sensor or
bus, or manually)
●Parameters protected by password (disabled by default)
●Purge function together with 2-port valve
●Valve exercising function to prevent gripping
●Reminder to clean fan filters
●Min. and max. limitation of room temperature setpoint:
– Comfort limitation (min. and max. limitation)
– Energy saving concept (min. and max. limitation separate for heating and
cooling)
●Temporary Comfort mode extension
●Green leaf indication function
●Display of current room temperature or setpoint in ℃, ℉or both
●Application selection via DIP switches or external commissioning software
(ACS, ETS and Siemens smartphone application PCT Go for Android)
●Parameter download with external commissioning software (ACS, ETS and
Siemens smartphone application PCT Go for Android)
●Reloading factory settings for commissioning and control parameters
●1-speed, 3-speed or DC 0...10 V fan control on RDG200KN and RDG260KN
(automatic or manual fan)
●Advanced fan control function, e.g. fan kick, fan start delay, selectable fan
operation (enable, disable, depending on heating/cooling mode, or min. and
max. speed setting)
●Fan start depending on fan coil temperature (heating) to avoid cool air while
heating
●Enabling fan output only in the 2nd stage (2-pipe/2-stage)
●Switching fan speed from manual to automatic in the dead zone to avoid
energy waste (selectable function)
●Swap function for 2-pipe and 2-stage application by switching the 1st stage
heating to 2nd stage cooling
●On 2-pipe/2-stage application, limit the number of heating or cooling sequence
to one
●Control of 6-port ball valve for chilled and heated ceiling, DC 0…10 V,
DC 2…10 V and inverted signals DC 10…0 V, DC 10…2 V (RDG260KN)
●Control of 6-port ball valve as changeover (On/Off – open/close signal) and
PICV DC 0…10 V for
– Chilled and heated ceiling/floor (RDG260KN)
– Fan coil application (RDG260KN)
General functions
Setpoints and display
Setting
Fan
Special functions

Overview
Accessories
2
10 | 150 A6V11545892_en--_a
●Control of 6-port ball valve via KNX S-Mode objects (RDG200KN and
RDG260KN)
●Flow limitation function for PICV in heating mode (RDG260KN)
●3 multifunctional inputs selectable for:
– Window contact switches operating mode to Protection
– Presence detector switches operating mode to Comfort
– Sensor for automatic heating/cooling changeover
– Switch for manual heating/cooling changeover
– External room temperature or return air temperature sensor
– Dewpoint sensor
– Enable electric heater
– Fault input
– Monitor input for temperature sensor or switch status
– Supply air temperature sensor
– Coil temperature sensor
– External temperature limit
– Hotel presence detector
●Selectable relay functions
– Switching off external equipment during Protection mode
– Switching on external equipment (e.g. pump) during heating/cooling
demand
– Output status heating/cooling sequence
– Dehumidification/humidification control output
●KNX bus (terminals CE+ and CE-) for communication with Synco devices or
KNX compatible devices
●Display of outside temperature or time of day from KNX bus
●Time scheduling and central control of setpoints from KNX bus
●Control of Economy setpoints via KNX bus
●Relative humidity setpoint via KNX bus
●Control of KNX actuators and fan via S-Mode objects
●Energy supply optimization via energy demand signal via Synco RMB795B
central control unit
●Interworking with Siemens AQR.. and QMX.. sensors for room humidity and
room temperature measurement
●Interworking with Siemens QMX.. room operator units for room humidity, room
temperature and operating commands for fan, operating mode and setpoints
2.3 Accessories
Type Product/stock no. Datasheet
KNX power supply
160 mA (Siemens BT LV)
5WG1 125-1AB02 TPI_N125
KNX power supply
320 mA (Siemens BT LV)
5WG1 125-1AB12 TPI_N125
KNX power supply
640 mA (Siemens BT LV)
5WG1 125-1AB22 TPI_N125
Inputs/outputs
KNX communication
features

Ove
rview
Equipment combinations
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A6V11545892_en--_a 11 | 150
2.4 Equipment combinations
Type of unit Product no. Datasheet *)
Cable temperature or changeover
sensor, cable length 2.5 m NTC
(3 kΩat 25 °C)
QAH11.1 1840
Cable temperature sensor PVC 2 m,
LG-Ni1000
QPA22 1831
Room temperature sensor NTC
(3 kΩat 25 °C)
QAA32 1747
Room temperature sensor LG-
Ni1000
QAA24 1721
Front modules with passive
temperature measurement LG-
Ni1000
AQR2531ANW 1408
Strap-on temperature sensor LG-
Ni1000
QAD22 1801
Condensation monitor QXA21.. A6V10741072
Flush-mount KNX room sensor (base
and front module)
AQR2570N..
AQR2532NNW
AQR2533NNW
AQR2535NNW
1411
Wall-mounted KNX sensors QMX3.P30
QMX3.P70
1602
Type of unit Product no. Datasheet *)
Electromotive On/Off actuator SFA21..
SFA71..
4863
Electromotive On/Off valve and actuator
(only available in AP, UAE, SA and IN)
MVI../MXI.. A6V11251892
Zone valve actuator (only available in
AP, UAE, SA and IN)
SUA 4832
On/Off actuators

Overview
Equipment combinations
2
12 | 150 A6V11545892_en--_a
Type of unit Product
no.
Datasheet
*)
Thermal actuator (for radiator valves) AC 230 V,
NO
STA23.. 1) 4884
Thermal actuator (for radiator valves) AC 24 V,
NO
STA73.. 1) 4884
Thermal actuator AC 230 V (for small valves
2.5 mm), NC
STP23.. 1) 4884
Thermal actuator AC 24 V (for small valves
2.5 mm), NC
STP73.. 1) 4884
Type of unit Product no. Datasheet *)
Electric actuator, 3-position (for
radiator valves) AC 230 V
SSA31.. 4893
Electric actuator, 3-position (for 2-
and 3-port valves/V..P45) AC 230 V
SSC31 4895
Electric actuator, 3-position (for small
valves 2.5 mm) AC 230 V
SSP31.. 4864
Electric actuator, 3-position (for small
valves 5.5 mm) AC 230 V
SSB31.. 4891
Electric actuator, 3-position (for small
valve 5 mm) AC 230 V
SSD31.. 4861
Electric actuator, 3-position (for
valves 5.5 mm) AC 230 V
SAS31.. 4581
Rotary actuators for ball valves, 3-
position
GDB331.9E 4657
Rotary actuators for ball valves, 2 or
3-position
GDB141.9E
GDB341.9E
A6V10636150
Type of unit Product no. Datasheet *)
Electric actuator, 3-position (for
radiator valves) AC 24 V
SSA81.. 4893
Electric actuator, 3-position (for 2-
and 3-port valves/V..P45) AC 24 V
SSC81 4895
Electric actuator, 3-position (for small
valves 2.5 mm) AC 24 V
SSP81.. 4864
Electric actuator, 3-position (for small
valves 5.5 mm) AC 24 V
SSB81.. 4891
Electric actuator, 3-position (for small
valve 5 mm) AC 24 V
SSD81.. 4861
On/Off and PWM
actuators 1)
3-positon actuators
AC 230 V
3-positon actuators
AC 24 V

Overview
Equipment combinations
2
A6V11545892_en--_a 13 | 150
Type of unit Product no. Datasheet
*)
Electric actuator, DC 0…10 V (for
radiator valves)
SSA61.. 4893
Electric actuator, DC 0…10 V (for 2-
and 3-port valves/V..P45)
SSC61.. 4895
Electric actuator, DC 0…10 V (for small
valves 2.5 mm)
SSP61.. 4864
Electric actuator, DC 0…10 V (for small
valves 5.5 mm)
SSB61.. 4891
Electromotive actuator, DC 0…10 V (for
valves 5.5 mm)
SAS61.. 4581
Electrothermal actuator, AC 24 V, NC,
DC 0…10 V, 1 m
STA63 4884
Electrothermal actuator, AC 24 V, NO,
DC 0…10 V, 1 m
STP63 4884
Rotary actuators for ball valves AC 24 ,
DC 0…10 V
GDB161.9E 4657
Type of unit Product no. Datasheet *)
Rotary actuators for ball valves KNX S-
Mode
GDB111.9E/KN A6V10725318
*) The documents can be downloaded from https://hit.sbt.siemens.com
1) With PWM control, exact parallel run of 2 or more thermal actuators is not
possible. If several fan coil units are controlled by the same room thermostat,
motorized actuators with On/Off or 3-position control are preferred.
For more information about parallel operation and the max. number of actuators
that can be used, refer to the data sheets of the selected actuator type and the
following list:
Max. number of actuators in parallel on RDG200KN (AC 230 V):
●6 SS..31.. actuators (3-position)
●4 ST..23.. if used with On/Off control signal
●10 SFA.., SUA.., MVI.., MXI.. On/Off actuators
●Parallel operation of SAS31 not available
Max. number of actuators in parallel on RDG200KN (AC 24 V):
●6 SS..81.. actuators (3-position)
●4 ST..73.. if used with On/Off control signal
●2 SFA71.. On/Off actuators
●Parallel operation of SAS81 not available
Max. number of actuators in parallel on RDG260KN (AC 24 V):
●10 SS..61.. actuators (DC)
●10 ST..23/63/73.. actuators (DC or On/Off)
●10 SFA.., SUA.., MVI.., MXI.. On/Off actuators
●10 SAS61.. actuators (DC)
●10 GDB161.9E
DC 0…10 V actuators
KNX actuators
Note:

Overview
Integration via KNX bus
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2.5 Integration via KNX bus
The RDG2..KN room thermostats can be integrated as follows:
●Integration into Synco 700 system via LTE-Mode (easy engineering)
●Integration into Desigo via group addressing (ETS) or individual addressing
●Integration into third-party systems via group addressing (ETS)
The following KNX functions are available:
●Central time program and setpoints, e.g., when using the RMB795B central
control unit
●Outside temperature or time of day via bus displayed on thermostat
●Remote operation and monitoring with web browser using the OZW772 web
server
●Maximum energy efficiency due to exchange of relevant energy information,
e.g., with Synco 700 controllers (e.g., heating demand, cooling demand)
●Alarming, e.g., external fault contact, condensation, clean filter, and so on
●Monitoring input for temperature sensor or switch
Engineering and commissioning can be done by using:
●Local DIP switches and HMI
●Synco ACS
●ETS5 or higher versions
●Siemens smartphone application PCT Go for Android
The RDG2..KN room thermostats are especially tailored for integration into the
Synco 700 system and operate together in LTE-Mode. This extends the field of use
of Synco for individual room control in conjunction with fan coil units, chilled
ceilings and radiators.
Synco 700
Synco topology

Overview
Integration via KNX bus
2
A6V11545892_en--_a 15 | 150
Synco 700 Building automation and control system (BACS)
Gateway Connection of meters via Modbus
OZW Web server, connection of Synco, RDG/RDF & GAMMA
RMB Central control, RDG/RDF integration
RDG/RDF Thermostats for room climate control
Gamma Instabus For lighting control and other room electrical applications
The RDG2..KN thermostats can be integrated into the Siemens building
automation and control systems (BACS) Desigo or into third-party systems. Either
S-Mode (group addressing) or individual addressing can be used for integration.
Legend
Desigo and third-party
systems

Notes
Mounting and installation
3
16 | 150 A6V11545892_en--_a
3 Notes
3.1 Mounting and installation
●The devices are suitable for wall mounting.
●Recommended height: 1.5 m above the floor.
●Do not mount the devices in recesses, shelves, behind curtains or doors, or
above or near heat sources.
●Avoid direct solar radiation and drafts.
●Avoid unheated (uncooled) building area such as outside walls.
●Seal the conduit box or the installation tube if any, as air currents can affect
sensor readings.
●Adhere to allowed ambient conditions.
●An external room temperature sensor is recommended if above situations
cannot be avoided in the installation area.
●Comply with local regulations to wire, protect and earth the thermostat.
Warning! No internal line protection for supply lines to external consumers (Q1,
Q2, Q3, Yx or Yxx)! Risk of fire and injury due to short-circuits!
●Adapt the line diameters as per local regulations to the rated value of the
installed over current protection device.
●The AC 230 V mains supply line must have an external circuit breaker with a
rated current of no more than 10 A.
●Properly size the cables to the thermostat, fan and valve actuators for
AC 230 V mains voltage.
●Use valve actuators rated for AC 230 V / AC 24 V / DC 24 V depending on
mains voltage.
●Inputs X1-M, X2-M or U1-M: Multiple switches (e.g. summer/winter switch)
may be connected in parallel. Consider overall maximum contact sensing
current for switch rating.
●When mains voltage is AC 230 V, SELV inputs X1-M, X2-M and U1-M use
cables with min. 230 V insulation.
●Selectable relay function: Follow instructions in basic documentation
A6V11545892 (Relay functions [➙135]) to connect external equipment to the
relay outputs.
Mounting
Wiring

Notes
Commissioning
3
A6V11545892_en--_a 17 | 150
●Disconnect thermostat from power supply before removing from the
mounting plate.
●If a KNX bus power supply is connected to the line with communicating
thermostats and Synco controller, the internal KNX power supply of the Synco
controllers must be switched off.
3.2 Commissioning
The room thermostats are delivered with a fixed set of applications and related
parameters. Select and activate the relevant application and settings during
commissioning using one of the following tools:
●Local DIP switches and HMI
●Synco ACS
●ETS5 or higher versions
●Siemens smartphone application PCT Go for Android
Set the DIP switches before snapping the thermostat to the mounting plate when
selecting an application via DIP switches.
Set all DIP switches to Off (remote configuration) when selecting an application via
commissioning tool.
After power is On, the thermostat resets and all LCD segments light up, indicating
that reset is correct. After the reset of 3 seconds, the thermostat is ready for
commissioning by qualified HVAC staff.
If all DIP switches are Off, NO APPL displays, indicating that application
commissioning via a tool is required.
The Siemens smartphone application Product Commissioning Tool (PCT Go) for
Android is a commissioning tool that allows user to:
●Read and write parameters of the thermostats
●Set the application (e.g. 2-pipe)
●Change settings (e.g. setpoints)
●Set the KNX addressing (device address)
PCT Go APP works via NFC (Near Field Communication) and can be used while
the device is either powered, or unpowered, even from the individual package.
To read or write settings, NFC must be activated on the smartphone and the phone
must be close to the NFC antenna (built into the thermostat), i.e. at a distance up
to ± 2 cm.
Antenna range Unpowered thermostat in individual
package
See also Commissioning parameter via Smartphone app PCT Go [➙110]
Connect the Synco ACS or ETS tools to the KNX bus cable at any point for
commissioning.
Applications and settings
DIP switches
Commissioning via
Siemens smartphone
application PCT Go for
Android
Connect tools

Notes
Commissioning
3
18 | 150 A6V11545892_en--_a
ACS and ETS require an interface:
●KNX interface (e.g. Siemens N148…)
●OCI702 USB-KNX interface
Set the control sequence via parameter P001 depending on the application.
Factory setting:
Application Factory setting P001
2-pipe and chilled/heated ceiling, and 2-stage 1 = Cooling only
4-pipe, chilled ceiling and radiator,
6-port ball valve applications
4 = Heating and cooling
Recalibrate the temperature sensor, if the room temperature displayed on the
thermostat does not match the room temperature measured (after min. 1 hour of
operation). To do this, change parameter P006.
We recommended to review the setpoints and setpoint ranges (P011,
P013…P016, P019, P020) and change them as needed to achieve maximum
comfort and save energy.
The programming mode helps identify the thermostat in the KNX network during
commissioning.
Touch both the left and right buttons simultaneously for 6 seconds to activate
programming mode, indicated on the display by PROG.
Programming mode remains active until thermostat identification is complete.
Assign device address (P900) via HMI, ACS, ETS or Siemens smartphone
application PCT Go for Android.
Set the device address to 255 to deactivate the communication (no exchange of
process data).
Use ETS to assign the KNX group addresses of the thermostat's communication
objects.
Each device has a unique KNX serial number on the rear.
An additional sticker with the same KNX serial number is enclosed in the package.
This sticker is intended for documentation purposes of installers.
Control sequence
Calibrate sensor
Setpoint and range
limitation
Programming mode
Assign KNX device
address
Assign KNX group
address
KNX serial number

Notes
Oper
ation
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3.3 Operation
The room thermostat consists of two parts:
●Plastic housing with electronics, operating elements and room temperature
sensor
●Mounting plate with the screw terminals
The housing engages in the mounting plate and is secured with 2 screws.
Standard Hospitality
Number Description
①
Operating mode button/Esc
②
Fan mode button/OK
③Capacitive rotary knob to adjust setpoints and parameters
④Protection hospitality mode button
User action Effect, description
Normal operation Actual operating mode and state are
indicated by symbols.
Press any button
(thermostat in normal operation)
Enter operating mode selection; backlit
LCD turns on, all possible mode
symbols turn on, indicator element
(arrow, P001 = 3) displays the current
mode/state.
Press left button Operating mode, indicator element
(arrow, P001 = 3) changes to the next
mode symbol.
After the last press and a timeout of
3 seconds, the newly selected mode is
confirmed, the other elements
disappear. After a timeout of
20 seconds, the LCD backlight turns off.
Press left button (P001 = 3) Toggle between heating and cooling.
Layout
Button operation

Notes
Operation
3
20 | 150 A6V11545892_en--_a
User action Effect, description
Press left button while "Operating
mode" via bus is Economy
Activate "Extend Comfort mode"
(for details, see Different ways to
influence operating mode [➙27]).
Keep left button pressed and turn rotary
knob clockwise/counter-clockwise
Activate timer "Extend
presence"/"Extend absence" and set
the time (for details, see Different ways
to influence operating mode [➙27].
Press right button >3 seconds Activate/deactivate button lock.
Press right button for fan coil unit Change fan mode.
Turn rotary knob Adjust the room temperature Comfort
setpoint.
Press left and right buttons
simultaneously for 3 seconds. Release
and within 2 seconds, press the right
button again until P001 is displayed
Enter parameter setting mode "Service
level".
Press left and right button for 3
seconds, release, press left button for
2 seconds until the temperature
disappears, then turn rotary knob
counterclockwise min. ½ revolution
Enter parameter setting mode "Expert
level", diagnostics and test.
Press left and right button
simultaneously for 6 seconds
Enter (KNX) programming mode.
#
Symbol
Description
#
Symbol
Description
1
Operating mode
selection
2
Fan speed selection
3
Escape
4
Confirm parameters
5
Outside te
mperature
6
Additional user information,
such as outside
temperature, time of day
from KNX bus, relative
humidity
7
Morning: 12
-
hour format (via bus), Afternoon: 12
-
hour format (via
bus)
8
Relative humidity
9
Degrees Celsius or
Fahrenheit
10
P
arameter
11
Value with thermometer:
Digits for room temperature
display
Display