s
Room thermostat with KNX communications
RDG100KN
Basic Documentation
Edition: 1.0
CE1P3191en
22 Jun 2010
Building Technologies
Contents
1.
About this document ..............................................................................4
1.1
Revision history.........................................................................................4
1.2
Reference documents ...............................................................................4
1.3
1.3.1
1.3.2
1.3.3
Before you start .........................................................................................5
Copyright ...................................................................................................5
Quality assurance .....................................................................................5
Document use / request to the reader ......................................................5
1.4
Target audience, prerequisites ..................................................................6
1.5
Glossary ....................................................................................................6
2.
Summary ..................................................................................................7
2.1
Types.........................................................................................................7
2.2
Ordering ....................................................................................................7
2.3
Functions...................................................................................................7
2.4
Integration via KNX bus ............................................................................9
2.5
Equipment combinations......................................................................... 11
2.6
Accessories .............................................................................................11
3.
Functions ...............................................................................................12
3.1
Temperature control ................................................................................12
3.2
3.2.1
3.2.2
Operating modes.....................................................................................13
Different ways to influence the operating mode......................................14
Communication examples.......................................................................18
3.3
3.3.1
3.3.2
Room temperature setpoints...................................................................20
Description ..............................................................................................20
Setting and adjusting setpoints ...............................................................21
3.4
Applications overview..............................................................................23
3.5
Additional functions .................................................................................25
3.6
3.6.1
3.6.2
3.6.3
3.6.4
3.6.5
3.6.6
3.6.7
3.6.8
3.6.9
3.6.10
Control sequences ..................................................................................28
Sequences overview (setting via parameter P01) ..................................28
Application mode.....................................................................................29
2-pipe fan coil unit ...................................................................................31
2-pipe fan coil unit with electric heater....................................................32
2-pipe fan coil unit with radiator or floor heating .....................................34
4-pipe fan coil unit ...................................................................................36
4-pipe fan coil unit with electric heater....................................................38
2-stage heating or cooling.......................................................................40
Chilled / heated ceiling and radiator applications ...................................42
Setpoints and sequences........................................................................43
3.7
3.7.1
3.7.2
Control outputs ........................................................................................45
Overview .................................................................................................45
Control outputs configuration (setting via DIP switches 4/5 or tool, and
parameters P46/P47) ..............................................................................46
3.8
Fan control ..............................................................................................47
3.9
Multifunctional input, digital input ............................................................50
3.10
Handling faults.........................................................................................51
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3.11
3.11.1
3.11.2
3.11.3
3.11.4
3.11.5
3.11.6
3.11.7
3.11.8
KNX communications..............................................................................52
S-mode....................................................................................................52
LTE mode................................................................................................52
Zone addressing in LTE mode (in conjunction with Synco) ....................53
Example of heating and cooling demand zone.......................................55
Send heartbeat and receive timeout.......................................................56
Startup.....................................................................................................56
Heating and cooling demand ..................................................................56
Fault function on KNX .............................................................................57
3.12
3.12.1
3.12.2
Communication objects (S-mode)...........................................................58
Overview .................................................................................................58
Description of communication objects ....................................................59
3.13
3.13.1
3.13.2
3.13.3
3.13.4
Control parameters .................................................................................61
Parameter setting via local HMI ..............................................................61
Parameter setting / download via tool.....................................................62
Parameters of the "Service level" ...........................................................63
Parameters of the "Expert level with diagnostics and test"....................64
4.
Handling.................................................................................................67
4.1
Mounting and installation ........................................................................67
4.2
Commissioning........................................................................................68
4.3
Operation ................................................................................................70
4.4
Remote operation....................................................................................72
4.5
Disposal ..................................................................................................72
5.
Supported KNX tools............................................................................73
5.1
5.1.1
ETS3 Professional ..................................................................................73
Parameter settings in ETS Professional .................................................73
5.2
5.2.1
5.2.2
5.2.3
5.2.4
ACS700 Service and Operating tool .......................................................73
Parameter settings in ACS......................................................................74
Operation and monitoring with ACS........................................................75
Operation and monitoring with OZW772 ................................................79
Operation and monitoring with RMZ972 .................................................79
6.
Connection ............................................................................................80
6.1
Connection terminals ..............................................................................80
6.2
Connection diagrams ..............................................................................80
7.
Mechanical design ................................................................................81
7.1
General ...................................................................................................81
7.2
Dimensions .............................................................................................81
8.
Technical data .......................................................................................82
Index
................................................................................................................84
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Contents
CE1P3191en
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1.
About this document
1.1
Revision history
Edition
Date
Changes
1.0
07 Jun 2010
First edition
1.2
Subject
Ref
Room thermostats with KNX [1]
communications,
[2]
RDG100KN
[3]
KNX Manual
[4]
Synco and KNX (see
www.siemens.com/synco)
[5]
[6]
[7]
DESIGO
engineering documents
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
Section
Pages
Reference documents
Doc No.
Description
CE1N3191 Data Sheet
CE1B3191 Operating Instructions
CE1M3191 Mounting Instructions
Handbook for Home and Building Control – Basic Principles
(www.knx.org/uk/news-press/publications/publications/)
CE1N3127 KNX bus, Data Sheet
CE1P3127 Communication via the KNX bus for Synco 700, 900 and
RXB/RXL, Basic Documentation
XLS template Planning and commissioning protocol,
in HIT
communication Synco 700
CE1N3121 RMB395 central control unit, Data Sheet
CE1Y3110 KNX S-mode data points
-Product data for ETS3
CE1J3110
ETS product data compatibility list
0-92168en Synco Application Manual
CM1Y9775 DESIGO RXB integration – S-mode
CM1Y9776 DESIGO RXB / RXL integration – Individual Addressing
CM1Y9777 Third-party integration
CM1Y9778 Synco integration
CM1Y9779 Working with ETS
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1.3
Before you start
1.3.1
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.
1.3.2
Quality assurance
This document was prepared with great care.
 The contents of this document is 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.
1.3.3
Document use / request to the reader
Before using our products, it is important that you read the documents supplied
with or ordered at the same time as the products (equipment, applications, tools,
etc.) 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://workspace.sbt.siemens.com/content/00001123/default.aspx
 From the Siemens branch office near you
www.buildingtechnologies.siemens.com or from your system supplier
 From the support team at headquarters fieldsupport-zug.ch.sbt@siemens.com 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.
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1.4
Target audience, prerequisites
This document assumes that users of the RDG KNX thermostats are familiar with
the ETS3 Professional and/or Synco ACS700 tools and able to use them.
It also presupposes 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.konnex.org/).
For reference documentation, see section 1.2.
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:
ETS3 Professional
Parameters identified by this symbol are set using ETS3 Professional.
ACS Service
Parameters identified by this symbol are set using the ACS Service tool.
ACS Operating
STOP
Note!
K NX
R
Parameters identified by this symbol can be monitored using the ACS Operating
tool.
Setting RDG KNX parameters is only supported by the following tool
versions:
– ETS3f or higher
– ACS700 version 5.11 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 RDG KNX thermostats work 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 section 3.13.
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2.
Summary
2.1
Types
Product no.
RDG100KN
Stock no.
S55770-T163
Features
Operating
voltage
AC 230 V
Backlit
LCD
Number of control outputs
ON/OFF
3 1)
PWM
2 1)
3-pos
2 1)

1) Selectable: ON/OFF, PWM or 3-position (triac outputs)
2.2
Ordering
 When ordering, please indicate both product no. / stock no. and name:
E.g. RDG100KN / S55770-T163 room thermostat
 Order valve actuators separately
2.3
Use
Functions
Fan coil units via ON/OFF or modulating control outputs:
 2-pipe system
 2-pipe system with electric heater
 2-pipe system and radiator / floor heating
 4-pipe system
 4-pipe system with electric heater
 2-stage heating or cooling system
Chilled / heated ceilings (or radiators) via ON/OFF or modulating control
outputs:
 Chilled / heated ceiling
 Chilled / heated ceiling with electric heater
 Chilled / heated ceiling and radiator / floor heating
 Chilled / heated ceiling, 2-stage cooling or heating
The room thermostats are delivered with a fixed set of applications.
The relevant application is selected and activated during commissioning using one
of the following tools:
 Synco ACS
 ETS3 Professional
Parameter and application download with ETS3 will be implemented later
 Local DIP switch and HMI
Features






Operating modes: Comfort, Economy (Energy Saving) and Protection
ON/OFF, PWM or 3-position control outputs (triac)
Output for 3-speed or 1-speed fan
Automatic or manual heating / cooling changeover
Backlit display
AC 230 V operating voltage
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Functions
 Room temperature control via built-in temperature sensor or external room
temperature / return air temperature sensor
 Changeover between heating and cooling mode (automatic via local sensor or
bus, or manually)
 Selection of applications via DIP switches or commissioning tool (ACS700).
Parameter and application download with ETS3 will be implemented later
 Select operating mode via operating mode button on the thermostat
 Temporary Comfort mode extension
 1- or 3-speed fan control (automatically or manually)
 Display of current room temperature or setpoint in °C and/or °F
 Minimum and maximum limitation of room temperature setpoint
 Button lock (automatically or manually)
 3 multifunctional inputs, freely selectable for:
– Operating mode switchover contact (keycard, window contact, etc.)
– Sensor for automatic heating / cooling changeover
– External room temperature or return air temperature sensor
– Dew point sensor
– Electric heater enable
– Fault input
– Monitor input for temperature sensor or switch state
 Advanced fan control function, e.g. fan kick, fan start, selectable fan operation
(enable, disable or depending on heating or cooling mode)
 “Purge” function together with 2-port valve in a 2-pipe changeover system
 Reminder to clean fan filters
 Floor heating temperature limitation
 Reload factory settings for commissioning and control parameters
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2.4
Integration via KNX bus
The RDG room thermostats can be integrated as follows:
 Integration into Synco 700 system via LTE mode (easy engineering)
 Integration into Synco living via group addressing (ETS3)
 Integration into DESIGO via group addressing (ETS3) or individual addressing
 Integration into third-party systems via group addressing (ETS3)
The following KNX functions are available:
 Central time program and setpoints, e.g. when using the RMB795 central control
unit
 Outside temperature or time of day via bus displayed on thermostat
 Remote operation and monitoring, e.g. using the RMZ792 bus operator unit
 Remote operation and monitoring with web browser using the OZW772 or
OZW775 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, etc.
 Monitoring input for temperature sensor or switch
Engineering and commissioning can be done using…
– local DIP switches / HMI
– Synco ACS700 service tool
– ETS3 Professional
Parameter and application download with ETS3 will be implemented later
Synco 700
The RDG 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, VAV, chilled
ceilings and radiators.
Synco living
Thanks to S-mode extension to the QAX910 central apartment unit, communicating
room thermostats can be easily integrated into Synco living systems. Using the
S-mode data points of the central apartment unit, additional room information can
be exchanged with the room thermostat via KNX TP1 (RF function is not available
on the room thermostats). To make the integration, the ETS3 engineering tool is
required.
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Synco topology
Legend:
Synco 700
Synco living
RDG..., RDF…, RDU…
OZW772 (or OZW775)
RMZ792
QAW...
ACS700
RXB, RXL
QAX
DESIGO and third-party
systems
Building automation and control system (BACS)
Room automation and control system
Room thermostats
Web server
Bus operator unit
Room unit
Service tool using OCI700.1 (OCI700.1 is delivered
with a service cable which can be plugged into the
service connector on a Synco controller)
Room controllers
Room unit for RXB / RXL room controllers
The RDG KNX devices can be integrated into the Siemens building automation
and control systems (BACS) DESIGO or into 3rd-party systems. For integration,
either S-mode (group addressing) or individual addressing can be used. The
workflow for integration into DESIGO is the same as with standard KNX devices.
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2.5
Equipment combinations
Product no.
Data
sheet
Cable temperature sensor
QAH11.1
1840
Room temperature sensor
QAA32
1747
QXA2000 /
QXA2001 /
AQX2000
1542
SFA21...
4863
MVI… / MXI…
4867
SUA…
4830
STA21...
4893
STP21...
4878
SSA31...
4893
SSP31…
4864
SSB31...
4891
SSD31...
4861
Description
Condensation detector / extension
module
On / off actuators
Electromotoric ON/OFF actuator
Electromotoric ON/OFF valve and
actuator
(only available in AP, UAE, SA and IN)
Zone valve actuator
(only available in AP, UAE, SA and IN)
ON/OFF and PWM
actuators *)
3-position actuators
Thermal actuator (for radiator valves)
Thermal actuator
(for small valves 2.5 mm)
Electrical actuator, 3-position
(for radiator valves)
Electrical actuator, 3-position
(for small valves 2.5 mm)
Electrical actuator, 3-position
(for small valves 5.5 mm)
Electrical actuator, 3-position
(for small valve 5.5 mm)
*) Note: With PWM control, it is not possible to ensure exact parallel running of 2 or more thermal actuators.
If several fan coil systems are controlled by the same room thermostat, preference should be given to
motorized actuators with ON/OFF or 3-position control
2.6
Accessories
Description
Changeover mounting kit (50 pcs / package)
Adapter plate 120 x 120 mm for 4“ x 4“
conduit boxes
Adapter plate 112 x 130 mm for surface wiring
KNX power supply 160 mA (Siemens BT LV)
KNX power supply 320 mA (Siemens BT LV)
KNX power supply 640 mA (Siemens BT LV)
Product no /
Stock no.
ARG86.3
ARG70
Data
sheet
N3009
N3009
ARG70.2
5WG1 125-1AB01
5WG1 125-1AB11
5WG1 125-1AB21
N3009
----
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3.
Functions
3.1
Temperature control
General note:
Parameters
Setting of the control parameters (P01, etc., mentioned throughout the document)
is described in section 3.13.
Temperature control
The thermostat acquires the room temperature via built-in sensor, external room
temperature sensor (QAA32), or external return air temperature sensor (QAH11.1),
and maintains the setpoint by delivering actuator control commands to heating
and/or cooling equipment. The following control outputs are available:
 ON/OFF control (2-position)
 Modulating PI/P control with PWM output
 Modulating PI/P control with 3-position control output
The switching differential or proportional band is 2 K for heating mode and 1 K for
cooling mode (adjustable via parameters P30 and P31).
The integral action time for modulating PI control is 5 minutes (adjustable via
parameter P35).
Display
K NX
R
Room temperature
The display shows the acquired room temperature or the Comfort setpoint, selectable via parameter P06. The factory setting displays the current room temperature.
Use parameter P04 to display the room temperature or setpoint in °F rather than
°C as needed.
The acquired room temperature (internal or external sensor) is also available as
information on the bus.
 With automatic changeover or continuous heating / cooling, symbols /
indicate that the system currently heats or cools (heating or cooling output is
activated).
 With manual changeover (P01 = 2), symbols /
indicate that the system
currently operates in heating or cooling mode. Thus, the symbols are displayed
even when the thermostat operates in the neutral zone.
Symbols
/
indicate that the system currently heats or cools (heating or
cooling output is activated).
/
Concurrent display of
°C and °F
Concurrent display of the current temperature or setpoint in °C and °F (parameter
P07 = 1) is possible on the thermostats.
K NX
The outside temperature can be displayed on the room thermostat by setting
parameter P07 = 2. This temperature value has only information character.
In LTE mode, the outside temperature can only be received on outside temperature
zone 1.
In S-mode, the corresponding communication object needs to be bound with a
KNX sensor device.
R
Outside temperature via
bus
K NX
R
Time of day via bus
Time of day via bus can be displayed on the room thermostat by setting parameter
P07 = 3 or 4. The display format is either in 12- or in 24-hour format.
The information can be received from a Synco controller with time master
functionality or any other KNX device if the corresponding communication object is
bound.
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3.2
Operating modes
The thermostat's operating mode can be influenced in different ways (see below).
Specific heating and cooling setpoints are assigned to each operating mode.
K NX
R
Room operating mode:
State
The thermostat sends the effective room operating mode on the bus.
The following operating modes are available:
Auto Timer
In Auto Timer mode the room operating mode is commanded via bus.
Auto Timer is replaced by Comfort when no time schedule via bus is present
Comfort
In Comfort mode, the thermostat maintains the Comfort setpoint. This setpoint can
be defined via parameters P8, P9 and P10.
It can be locally adjusted via the rotary knob or via bus.
In Comfort mode, the fan can be set to automatic or manual fan speed: Low,
medium or high.
Economy
The setpoints (less heating and cooling than in Comfort mode) can be defined via
parameters P11 and P12.
The thermostat switches to Economy mode when...
– the operating mode button is pressed (only possible if parameter P02 is set to 2)
– Economy is sent via bus
– an operating mode switchover contact (e.g. keycard contact presence detector,
window contact) is active.
The contact can be connected to digital input D1 or multifunctional input X1, X2.
Set parameter P38 / P40 / P42 to 3 (P02 is irrelevant) *)
– "Window state" is sent via bus, e.g. from a KNX switch or a KNX presence
detector (P02 is irrelevant) *)
K NX
R
Room operating mode:
Window state
Note:
Protection
*) Operating mode switchover: Only one input source must be used, either local
input X1/X2/D1or KNX bus.
User operations are ineffective and “OFF” is displayed if the operating mode
switchover contact is active, or if "Window state" is sent via bus.
In Protection mode, the system is...
– protected against frost (factory setting 8 °C, can be disabled or changed via
P65)
– protected against overheating (factory setting OFF, can be enabled or changed
via P66)
No other operating mode can be selected locally if Protection mode is commanded
via bus.
and
are displayed.
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3.2.1
Source for change of
operating mode
ACS Service
ACS Operating
Source
Local operation
via left button
Bus command
K NX
R
Room op. mode




a
b
c

The operating mode can be influenced by different interventions.
The source of the effective room operating mode state can be monitored using the
"Cause" diagnostic data point in the ACS700 tool, operator unit RMZ792 or web
server OZW772 / 775.
Description
 Operating mode is not Auto Timer
 No time schedule via bus
 Temporary Comfort extension is active
 Operating mode switchover contact
 "Window state" sent via bus
 Time schedule available via bus
 local operating mode is set to Auto Timer
 Time schedule sends Protection mode via bus
 operating mode cannot be changed locally
Priority of operating
mode interventions
Priority
Different ways to influence the operating mode
Value of DP "Cause"
Room operating mode selector
(preselection)
“Timer” function
Room operating mode contact
Room operating mode contact
Time switch
The following table shows the priorities of different interventions.
A lower number means a higher priority.
Description
Commissioning
Remark
In parameter setting mode (highest priority), you can always
command an operating mode independent of all other settings or
intervention via bus and local input.
Protection mode via bus Protection mode, sent by a time schedule, has priority 2.
from time schedule
It cannot be overridden by the user nor by an operating mode
switchover contact.
Operating mode
If the contact is closed, the operating mode changes to Economy.
switchover contact
This overrides the operating mode on the thermostat.
"Window state" via bus "Window state" sent via bus has the same effect as the operating
mode switchover contact.
Note: Only one input source must be used, either local input
X1/X2/D1or KNX bus.
Operating mode button The user can switch the operating mode using the operating
mode button.
Operating mode via bus The operating mode can be changed via bus
Temporary extended
Comfort mode via
operating mode button
The operating mode can be temporarily set from Economy to
Comfort by pressing the operating mode button, if...
– Economy was sent via bus
– extended Comfort period >0 (parameter P68)
The last intervention wins, either locally or via bus
Time schedule via bus
The operating mode sent via bus can be overridden by all other
interventions. Exception: Protection mode has priority 2.
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Auto Timer mode
with time schedule via
bus
If a time schedule via bus is present, e.g. from central control unit, then the Auto
Timer mode is active. The thermostat automatically changes between Comfort
and Economy according to the time schedule via bus.
The display shows the Auto Timer mode symbol along with the symbol for the
effective room operating mode (Comfort
or Economy ).
By pressing the operating mode button, you can change to another operating
mode.
Automatic fan is the default fan speed in Auto Timer mode.
Behavior when bus
sends new operating
mode
Each time the time schedule sends a new operating mode (switching event), the
operating mode of the thermostat is set back to Auto Timer mode. This is to assure
that the room temperature is maintained according to the time schedule.
Precomfort via bus
If the time schedule sends Precomfort mode, then this mode will be transformed
either into Economy (factory setting) or Comfort (selectable via parameter P88).
Behavior when bus
sends Protection
No intervention is possible neither by the user nor by an operating mode switchover contact, if Protection mode is set by the time schedule. OFF flashes on the
display when the user presses a button.
Availability of Economy
mode
The operating mode can be selected locally via the operating mode button.
The behavior of the operating mode button (user profile) can be defined via
parameter P02, factory setting is P02 = 1.
P02
1
2
Without time
schedule

 
With time schedule via bus

  
Description
 Switching manually between 2 modes, Economy is not
available (factory setting)
 Suited for hotel guest rooms or commercial buildings.
 If a time schedule via bus is available, then the Comfort
mode can be temporarily extended (see below)
 Switching manually between 3 modes
 Suited for homes and rooms where manual switching to
Economy mode is desired
Operating mode
switchover contact
(window contact)
The thermostat can be forced into Economy mode (e.g. when a window is opened,
when a presence detector signals "no one present", when the keycard of a hotel
room is withdrawn, etc). The contact can be connected to digital input D1 (or multifunctional input X1, X2). Set parameter P42 (P38, P40) to 3.
K NX
The function is also available via the KNX signal "Window state", e.g. from a KNX
switch or a KNX presence detector.
R
Room operating mode:
Window state
Note: Only one input source must be used, either local input X1/X2/D1or KNX bus.
User operations are ineffective and “OFF” is displayed if the operating mode
switchover contact is active, or if "Window state" is sent via bus.
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Comfort mode can be temporarily extended (e.g. working after business hour or on
weekends) when the thermostat is in Economy mode. The operating mode button
switches the operating mode back to Comfort for the period preset in P68.
Press the operating mode button again to stop the timer.
Temporary timer to
extend the Comfort
mode
The following conditions must be fulfilled:
 The operating mode switchover contact is closed (connected to input X1, X2,
D1, parameter P38, P40, P42 set to 3 or a KNX switch, KNX presence detector,
etc. via bus)
or
mode selection via operating mode button is set to “Protection-Auto” (P02 = 1)
and the time schedule via bus is Economy
 Parameter P68 (extend Comfort period) is greater than 0
During the temporary Comfort mode extension, symbol
appears.
If parameter P68 (extend Comfort period) = 0, extended Comfort cannot be
activated; pressing the left button will switch the thermostat to Protection.
If the operating mode switchover contact is active, pressing the left button will show
“OFF” (blinking).
The effective room operating mode can be forced temporarily into Comfort or
Economy / Protection mode. The time period is adjusted via the rotary knob:
Timer for extension of
presence / absence
 Extend presence: Set the device to Comfort mode for the selected time period
 Extend absence: Set the device to Economy / Protection mode for the selected
time period
To activate the function, keep the left button pressed and, within 3 seconds, turn
the rotary knob…
 clockwise for extended presence
 counterclockwise for extended absence
The rotary knob adjusts the time period:
 Extend presence: 0:00…+9:30 in steps of 30 minutes; symbol
 Extend absence: 0:00…–9:30 in steps of 30 minutes; symbol
appears
or
appears
During the extended presence / absence period, the sandglass symbol
appears.
Function if no time schedule is received via bus
User profile for operating mode
(selected via P02)
P02 = 1
 


P02 = 2
 






Operating
mode when
activating
function
Comfort
Comfort
Protection
Comfort
Comfort
Economy
Economy
Protection
Function
Operating
mode during
function
Operating mode
at the end of
function
Extension
Absence
Not available
Extension
Absence
Extension
Absence
Not available
Comfort
Protection
Comfort
Economy
Comfort
Economy
-
Protection
Comfort
Economy
Comfort
Economy
Comfort
-
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Function with time schedule via bus
User profile for operating mode
(selected via P02)
P02 = 1
 


P02 = 2
  
( )



Operating
mode when
activating
function
Auto
Auto
Comfort
Comfort
Protection
Economy
Economy
Protection
Function
Operating
mode during
function
Operating mode
at the end of
function
Extension
Absence
Extension
Absence
Not available
Extension
Absence
Not available
Comfort
Protection
Comfort
Protection
Comfort
Economy
-
Auto
Auto
Auto
Auto
Auto
Auto
-
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3.2.2
Communication examples
The following examples show two typical applications of a central time schedule in
conjunction with local control of the room operating mode.
The room operating mode in rooms 1…2 of a building is determined by the time
schedule. Window contacts are fitted in all rooms.
The following conditions are specified:
The rooms are used and controlled by the time schedule as follows:
– Night setback from 17:00 to 08:00 (Economy)
– Protection from 20:00 to 06:00
– Lunch break from 12:00 to 13:00 (Precomfort)
The substitution (parameter P88) for Precomfort via bus is set on the thermostats
as follows:
– Room 1: Comfort (1)
– Room 2: Economy (0)
Operating mode switchover
Example 1
In room 1, the window is opened briefly, once in the morning, once in late
afternoon and once at night (1). Only the opening in the morning has a direct
impact on the effective room operating mode.
During lunch break, the time schedule changes to Precomfort. The mode remains
in Comfort as set by parameter “Transformation Precomfort” (P88 = 1).
06:00 08:00
12:00 13:00
17:00
20:00
3171Z91
Time schedule
Comfort
Precomfort
Economy
Protection
Window contact
Room 1
Window open
1)
1)
1)
Window closed
2)
Comfort
Effective room
operating mode
Room 1
Economy
Protection
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Interaction of user operation (operating mode button) and central time
schedule
Example 2
In room 2, the window is opened briefly, once in the morning and once at night (1).
Only the opening in the morning has a direct impact on the effective room operating mode.
With the operating mode button, the operating mode can be changed between
OFF and Auto or temporary Comfort extension respectively.




Time schedule
Room operating
mode
During lunch break, the time schedule changes to Precomfort. The mode of the
thermostat changes to Economy as set by parameter “Transformation
Precomfort” (P88 = 0) (6)
During lunch break, the user changes the operating mode to Comfort
(temporary Comfort extension) by pressing the operating mode button (2).
At 13:00, the timer is reset due to mode change of the central time schedule
In the afternoon, the user switches the thermostat off by pressing the operating
mode button (3). At 17:00 the user setting is reset to Economy by the time
schedule
At 19:30, the user again extends the Comfort mode (4). At 20:00, the timer is
reset by the time schedule
After 20:00, pressing the operating mode button has no effect, as the central
time switch sets the thermostat to Protection (5)
Comfort
12:00 13:00
06:00 08:00
17:00
20:00
3171Z92

Precomfort
Economy
Protection
Operating mode
button on the
thermostat
Window contact
Room 2
Effective room
operating mode
Room 2
Pressed
Window open
2)
3)
4)
5)
1)
1)
Window closed
Comfort
Economy
6)
Protection
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Comfort mode
3.3
Room temperature setpoints
3.3.1
Description
The factory setting for the Comfort basic setpoint is 21 °C and can be changed in
the thermostat’s EEPROM via parameter P08 or via bus with communication object
" Comfort basic setpoint". The last intervention always wins.
The Comfort setpoint can be adjusted via the rotary knob,
or via bus from a remote device like a touchpanel, operating unit, etc.
The last intervention always wins.
Temporary setpoint
If the “Temporary setpoint” function is enabled via parameter P69, the Comfort
setpoint adjusted via the rotary knob, the or via bus is set back to the Comfort basic
setpoint stored in P08 when the operating mode changes.
Setpoint limitation
For energy saving purposes, the setpoint setting range can be limited to minimum
(P09) and maximum (P10).
P09 < P10
 If the minimum limit P09 is set lower than the maximum limit P10, both heating
and cooling are adjustable between these 2 limits
P09 ≥ P10
 For heating or cooling applications (e.g. 2-stage):
– The setting range in cooling mode is from P09…40 °C in place of 5…40 °C
– The setting range in heating mode is from 5…P10 °C in place of 5…40 °C
 For heating and cooling applications (e.g. 4-pipe):
– P09 is the setpoint for cooling and P10 the setpoint for heating
– The setpoint can no longer be adjusted via the rotary knob
Examples
2-pipe heating OR cooling
4-pipe heating AND cooling
P09 < P10
5°C
18°C
P09
25°C
P10
40°C
Cooling setpoint adjustable 18…25 °C
Heating setpoint adjustable 18…25 °C
P09 ≥ P10
5°C
21°C
P10
25°C
P09
40°C
5°C
18°C
P09
25°C
P10
40°C
Cooling setpoint adjustable 18…25 °C
Heating setpoint adjustable 18…25 °C
Cooling fixed = 25 °C (P09)
Heating fixed = 21 °C (P10)
Cooling setpoint adjustable 25…40 °C
Heating setpoint adjustable 5…21 °C
Economy mode
Use control parameters P11 and P12 to adjust the Economy mode setpoints.
The heating setpoint is factory-set to 15 °C, and the cooling setpoint to 30 °C.
Protection mode
Use control parameters P65 and P66 to adjust the Protection mode setpoints.
The heating setpoint is factory-set to 8 °C (frost protection) and to OFF for cooling.
Caution
If a setpoint (Economy or Protection) is set to OFF, the thermostat does not control
the room temperature in the corresponding mode (heating or cooling).
This means no protective heating or cooling function and thus risk of frost in
heating mode or risk of overtemperature in cooling mode!
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The Economy setpoints are accessible at the service level (P11, P12); the
Protection setpoints at the expert level (P65, P66).
3.3.2
Setting and adjusting setpoints
Room temperature setpoints can be
– set during commissioning
– adjusted during runtime
KNX
R
Comfort basic setpoint
Comfort setpoint
The source can be
– the local HMI
– a tool
– a central control unit
The thermostat stores the setpoints
– in EEPROM in the form of parameters
– in the runtime memory
The table below shows the interrelations:
Setpoint setting
Commissioning
– HMI
– Tool download
Comfort basic setpoint
Dead zone Comfort 1)
Setpoint Economy Heating
Setpoint Economy Cooling
Setpoint Protection Heating
Setpoint Protection Cooling
Input LTE mode
Input S-mode
Setpoints Heating
Setpoints Cooling
Setpoints Heating
Setpoints Cooling
Comfort basic setpoint
Current runtime
setpoints in
thermostat
Comfort setpoint
Economy Heating
Economy Cooling
Protection Heating
Protection Cooling
Effective room operating mode
Stored in EEPROM
of thermostat
Setpoint
adjustment
Input LTE mode
2)
Setpoint shift H
Setpoint shift C
Setpoint shift H
Setpoint shift C
Input S-mode
3)
Comfort setpoint
P08 Comfort basic setpoint
P33 Dead zone Comfort 1)
P11 Economy Heating
P12 Economy Cooling
P65 Protection Heating
P66 Protection Cooling
New current
runtime setpoints
in thermostat
Local operation 3)
Rotary knob
Comfort setpoint
Economy Heating
Economy Cooling
Protection Heating
Protection Cooling
Current setpoint (used by the thermostat for temperature control)
1) Only required for heating AND cooling applications (see section 3.6.10)
2) LTE mode: the shift is added to the local shift
3) S-Mode: the last intervention wins, either S-Mode input or local operation
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KNX
R
Current setpoint
The current setpoint (used by the thermostat for temperature control) is available
on the bus for use in the central control unit.
General notes:
 The supported communication objects are different in LTE mode and S-mode
 Changes via the local HMI or via tool have the same priority (last always wins)
 Setting the Comfort basic setpoint will reset the runtime Comfort setpoint to the
basic setpoint
Notes on setpoint
adjustment (LTE mode
with Synco only)
 Central setpoint shift is used for summer / winter compensation in particular
 Setpoint shift does not affect the setpoints stored in parameters P08, P11, P12,
P33
 Local shift and central shift are added together
 Applies only to Comfort and Economy setpoints; Protection setpoints are not
shifted centrally
 The resulting (current) setpoint heating and cooling is limited by the Protection
setpoint; if Protection setpoint is OFF, then minimum 5 °C and maximum 40 °C
are used
 The resulting setpoints for cooling and heating of the same operating mode have
a minimum distance of 0.5 K between them
 The result of local and central shift, together with the room operating mode, is
used by the thermostat for temperature control (current setpoint)
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3.4
Applications overview
The thermostats support the following applications, which can be configured using
the DIP switches at the rear of the unit or a commissioning tool.
DIP switches 1...3 need to be set to OFF (remote configuration, factory setting) to
select an application via commissioning tool.
The tool offers the applications printed in bold text (basic applications).
For universal applications (chilled ceiling, etc.), refer to section 3.6.9.
Application
DIP switches
Remote configuration
via commissioning tool (factory setting)
 Synco ACS
 ETS3 professional
(Parameter and application download with
ETS3 will be implemented later)
Heating or cooling
 2-pipe fan coil unit
(heating or cooling)
Diagram
ON
OFF
1
2
3
4
5
1
2
3
4
5
ON
OFF
 Chilled / heated ceiling
(heating or cooling)
T
B2
T
(B1)
Y1
M1
T
(B1)
Heating or cooling with electric heater
 2-pipe fan coil unit and electric heater
(heating or cooling)
ON
OFF
1
2
3
4
5
 Chilled / heated ceiling and electric heater
(heating or cooling)
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Heating or cooling and radiator / floor
heating
 2-pipe fan coil unit and radiator
(heating or cooling)
ON
OFF
1
2
3
4
5
T
B2
T
(B1)
 Chilled / heated ceiling and radiator
(heating or cooling)
Y1
M1
T
(B1)
YR
Heating and cooling
 4-pipe fan coil unit
(heating and cooling)
ON
OFF
1
2
3
4
5
 Chilled ceiling and radiator
(heating and cooling)
Y2
T
(B1)
Y1
M1
T
(B1)
Heating and cooling with electric heater
 4-pipe fan coil unit with electric heater
(heating and cooling)
2-stage heating or cooling
 2-stage fan coil unit
(heating or cooling)
 2-stage chilled / heated ceiling
(heating or cooling)
ON
OFF
1
2
3
4
5
1
2
3
4
5
ON
OFF
B2
T
Y2
T
(B1)
Y1
M1
T
(B1)
Key
Y1
Y2
Heating or heating / cooling valve actuator
Cooling valve actuator
YE
Electric heater
M1 1-speed or 3-speed fan
B1 Return air temperature sensor or external room
temperature sensor (optional)
B2 Changeover sensor (optional)
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3.5
Additional functions
Heating / cooling
changeover via bus
The heating / cooling changeover information can be received via bus. This is only
possible if the control sequence is set to automatic heating / cooling changeover
(parameter P01 = 3) and no local input X1, X2, D1 is assigned with this function.
K NX
In the absence of the required information (e.g. due to problems with data
communication, power failure, etc.), the thermostat operates in the last valid room
operating mode (heating or cooling).
R
Heating/cooling
changeover
Automatic heating /
cooling changeover via
changeover sensor
If a cable temperature sensor (QAH11.1 + ARG86.3) is connected to X1 / X2, and
parameter P38 / P40 is =2, the water temperature acquired by the changeover
sensor is used to change over from heating to cooling mode, or vice versa. When
the water temperature is above 28 °C (parameter P37), the thermostat changes
over to heating mode, and to cooling mode when below 16 °C (parameter P36).
If the water temperature is between the 2 changeover points immediately after
power-up, the thermostat starts in heating mode.
The water temperature is acquired at 30-second intervals and the operating state is
updated accordingly.
M
16
M
Tw[°C]
28
Cooling mode
Operating mode
Tw Water temperature
Changeover switch
Heating mode
The QAH11.1 cable temperature sensor for automatic heating / cooling changeover
can be replaced by an external switch for manual, remote changeover:
X2
M
T
QAH11.1
X2
M
3076Z03
Contact open  heating mode
Contact closed  cooling mode
T °C
The sensor or switch can be connected to input terminal X2 or X1 or D1 (switch
only), depending on the commissioning of the inputs (P38, P40, P42).
See also section 3.9 “Multifunctional input”.
Manual heating /
cooling changeover
If manual heating / cooling changeover is commissioned (P01 = 2), then heating /
cooling mode cannot be changed via bus / changover sensor / switch; it will remain
in the last mode as selected locally via button.
External / return air
temperature sensor
The thermostat acquires the room temperature via built-in sensor, external room
temperature sensor (QAA32), or external return air temperature sensor (QAH11.1)
connected to multifunctional input X1 or X2.
Inputs X1 or X2 must be commissioned accordingly. See section 3.9 “Multifunctional input”.
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Purge function
The changeover sensor ensures changeover from heating to cooling mode based
on the acquired water temperature. We recommend activating the “Purge” function
(parameter P50) with 2-port valves. This function ensures correct acquisition of the
medium temperature even if the 2-port valve is closed for an extended period of
time. The valve is then opened for 1 to 5 minutes (adjustable) at 2-hour intervals
during off hours.
Avoid damage from
moisture
In very warm and humid climates, the fan can be run periodically or continuously at
a low fan speed (e.g. in empty apartments or shops) in Economy mode by setting
parameter P61, in order to avoid damage from moisture due to lack of air
circulation. See also section 3.8 “Fan control”, under “Fan kick function”.
Minimum output
ON-time / OFF-time
Limit the ON/OFF switching cycle to protect the HVAC equipment, e.g. compressor
and reduce wear and tear. The minimum output on-time and off-time for 2-position
control output can be adjusted from 1 to 20 minutes via parameters P48 and P49.
The factory setting is 1 minute.
Readjusting the setpoint or heating / cooling mode changeover immediately results
in calculation of the output state; the outputs may not hold the minimum 1-minute
ON/OFF time.
If parameter P48 or P49 is set to above 1 minute, the minimum ON/OFF time for
the control output is maintained as set, even if the setpoint or changeover mode is
readjusted.
Floor heating /
Floor cooling
All heating sequences can also be used for floor heating.
You can use fan coil unit heating / cooling sequences for floor heating or cooling by
disabling the fan via parameter P52.
Floor temperature
limitation function
The floor temperature should be limited for 2 reasons: Comfort and protection of
the floor.
The floor temperature sensor, connected to multifunctional input X1 or X2, acquires
the floor temperature. If the temperature exceeds the parameterized limit (parameter P51), the heating valve is fully closed until the floor temperature drops to a level
2 K below the parameterized limit.
This function is factory-set to OFF (disabled).
Input X1 or X2 must be commissioned accordingly (P38 or P40 = 1).
See section 3.9 “Multifunctional input”.
Living rooms:
Up to 26 °C for long-time presence, up to 28 °C for short-time presence.
Bath rooms:
Up to 28 °C for long-time presence, up to 30 °C for short-time presence.
Recommended values
for P51:
The table below shows the relation between parameter, temperature source and
temperature display:
OFF
OFF
10...50 ˚C
External temp.
sensor available
No
Yes
No
Source for display of
room temperature
Built-in sensor
External temp. sensor
Built-in sensor
10…50 ˚C
Yes
Built-in sensor
Parameter P51
Output control
according to
Built-in sensor
External temp. sensor
Built-in sensor
Built-in sensor + limit
by external sensor
Floor temp.
limit function
Not active
Not active
Not active
Active
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The “Floor temperature limitation” function influences the outputs listed in the table
below:
“Floor temp. limit” function has impact on
Application
Output Y1
2-pipe
H/C valve
Output Y2
Output Y3
Heating
(P01 = 0/2/3)
Cooling
Heat. and cool.
(P01 = 1/2/3)
(P01 = 4)
Remark
Y1
N/A
Y2 *)
2-pipe & el heater H/C valve
El heater
Y2
2-pipe & radiator
H/C valve
Radiator
Y2
Y2
4-pipe
Heating valve Cooling valve
Y1
N/A
Y1
Y3
N/A
Y3
Y1, Y2
N/A
4-pipe & el heater Heating valve Cooling valve El heater
2-stage
1st H/C
2nd H/C
*) If P13 = ON
Note
Only el heater
Only radiator
Only el heater
 electric heater in cooling mode
Either floor temperature sensor or external room temperature sensor can be used.
Dew point monitoring
Dew point monitoring is essential to prevent condensation on the chilled ceiling
(cooling with fan disabled, parameter P52). It helps avoid associated damage to
the building.
A dew point sensor with a potential-free contact is connected to multifunctional
input X1, X2 or D1. If there is condensation, the cooling valve is fully closed until no
more condensation is detected, and the cooling output is disabled temporarily.
K NX
The condensation symbol “ ” is displayed during temporary override and the fault
“Condensation in room” will be sent via bus.
R
Fault state
Fault information
The input must be commissioned accordingly (P38, P40, P42).
See section 3.9 “Multifunctional input”.
Button lock
If the “Button lock” function is enabled by parameter P14, the buttons will be locked
or unlocked by pressing the right button for 3 seconds.
If “Auto lock” is configured, the thermostat will automatically lock the buttons 10
seconds after the last adjustment.
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3.6
Control sequences
3.6.1
Sequences overview (setting via parameter P01)
The main control sequence (i.e. the water coil sequence of the fan coil unit) can be
set via parameter P01.
The following sequences can be activated in the thermostats (each without or with
auxiliary heating).
The available sequences depend on the application (selected via DIP switch, see
section 3.4).
Parameter
P01 = 0
P01 = 1
P01 = 2
P01 = 3
P01 = 4
T
Sequence
T °C
T °C
Heating
Available
for basic
application 1) :

2-pipe,
2-pipe & el heater
2-pipe & radiator
4-pipe
4-pipe & el heater
2-stage heating or
cooling
Notes:


Cooling


T °C
T °C
T °C
Manually select
heating or
cooling
sequence
Automatic
heating /
cooling
changeover via
external water
temperature
sensor or
remote switch


 2)
 2)


Heating and
cooling
sequence, i.e.
4-pipe

1) For chilled / heated ceiling and radiator applications, see section 3.6.9;
2) For manual and automatic changeover with 4-pipe applications, see section
3.6.6:
– 4-pipe manual changeover (P01 = 2) means activating either cooling or
heating outputs
– 4-pipe automatic changeover (P01 = 3) means swapping the control outputs
according to a heating / cooling sensor or remote switch ("main and
secondary" application), see section 3.6.6
For the relation between setpoints and sequences, see section 3.6.10.
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3.6.2
K NX
Application mode
The behavior of the thermostat can be influenced by a building automation and
control system (BACS) via bus with the command “Application mode”.
With this signal, cooling and/or heating activity can be enabled or disabled.
Application mode is supported in LTE mode and S-mode.
The RDG KNX thermostats support the following commands:
R
Application mode
#
0
Application
mode
Auto
1
2
Heat
Morning
warm-up
3
4
5
Cool
Night purge
Pre-cool
6
Off
8
Emergency
heat
9
Fan only
Description
Thermostat automatically changes between
heating and cooling
Thermostat is only allowed to heat
If “Morning warm-up” is received, the room
should be heated up as fast as possible (if
necessary). The thermostat will only allow
heating
Thermostat is only allowed to provide cooling
Not supported by fan coil applications
If “Pre-cool” is received, the room should be
cooled down as fast as possible (if
necessary). The thermostat will only allow
cooling
Thermostat is not controlling the outputs,
which means all outputs go to off or 0%
The thermostat should heat as much as
possible. The thermostat will only allow
heating
All control outputs are set to 0% and only the
fan is set to high speed.
Function will be terminated by any operation
on the thermostat
Control sequence
enabled
Heating and/or cooling
Heating only
Heating only
Cooling only
N/A (= Auto)
Cooling only
Neither heating nor
cooling
Heating only
Run fan in high speed
With all other commands, the thermostat behaves like in Auto mode, i.e. heating or
cooling according to demand.
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ACS Operating
Heating OR cooling
The state (heating or cooling) of the thermostat can be monitored with the ACS700
tool (diagnostic value “Control sequence”). The last active mode is displayed when
the thermostat is in the dead zone or temperature control is disabled.
With a 2 pipe application, the control sequence state is determined by the
application mode (see section 3.6.2) and by the state of the heating / cooling
changeover signal (via local sensor or bus), or fixed according to the selected
control sequence (P01 = heating (0) / cooling (1)).
Application
mode (via bus)
Auto (0)
Heat (1), (2), (8)
Cool (3), (5)
Night purge (4),
Fan only (9)
Heating AND cooling
State changeover / continuous heating or cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Heating
Cooling
Control sequence state
Heating
Cooling
Heating
Heating
Cooling
Cooling
Heating
Cooling
With a 4-pipe, 2-pipe with electric heater, and 2-pipe with radiator application, the
control sequence state depends on the application mode and on the heating /
cooling demand.
Application
Mode (via bus)
Auto (0)
Heat (1), (2), (8)
Cool (3), (5)
Night purge (4),
Fan only (9)
Heating / cooling demand
Control sequence state
Heating
No demand
Heating
Heating / cooling depending
on last active sequence
Cooling
Heating
Heating
Heating
Cooling
Cooling
Cooling
Heating / cooling depending
on last active sequence
Cooling
Heating
No demand
Cooling
Heating
No demand
Cooling
No temperature control active
3171D01
The value of the output as a function of the room temperature is shown in the
following diagram in case of a heating and cooling system:
1 = Heat
0 = Cool
100%
Wheat = current heating setpoint
0
Wheat
Wcool
TR
Wcool = current cooling setpoint
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3.6.3
2-pipe fan coil unit
On 2-pipe applications, the thermostat controls a valve in heating / cooling mode
with changeover (automatically or manually), heating only, or cooling only. Cooling
only is factory-set (P01 = 1).
ON/OFF control
The diagrams below show the control sequence for 2-position control.
Heating mode
Cooling mode
Y
3076D01
Y
Y1
1
3076D02
Control sequence
ON/OFF output
Y1
1
w
0
T[°C]
½ SDH
½ SDH
w
0
T[°C]
½ SDC
½ SDC
T[°C] Room temperature
SDH
Switching differential “Heating” (P30)
w
Room temperature setpoint
SDC
Switching differential “Cooling” (P31)
Y1
Control command “Valve”
Modulating control: 3-position, PWM
The diagrams below show the control sequence for modulating PI control.
Heating mode
Cooling mode
100
Y1
0
XpH
Note:
3076D03
Y [%]
Y [%]
3076D04
Control sequence
modulating output
Y1
100
w
T[°C]
0
T[°C]
w
XpC
T[°C]
Room temperature
XpH
Proportional band “Heating” (P30)
w
Room temperature setpoint
XpC
Proportional band “Cooling” (P31)
Y1
Control command “Valve”
The diagrams only show the PI thermostat’s proportional part.
Setting the sequence and the control outputs
Refer to sections 3.4 "Applications", 3.6.1 "Sequences", and 3.7 "Outputs".
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3.6.4
2-pipe fan coil unit with electric heater
Heating or cooling with
auxiliary heater
On 2-pipe applications with electric heater, the thermostat controls a valve in
heating / cooling mode with changeover, heating only, or cooling only plus an
auxiliary electric heater.
Cooling only is factory-set (P01 = 1) with enabled electric heater (P13).
Electric heating, active in
cooling mode
In cooling mode, the valve receives an OPEN command if the acquired temperature is above the setpoint.
The electric heater receives an ON command if the acquired room temperature
drops below “setpoint” minus “dead zone” (= setpoint for electric heater) while the
electric heater is enabled (parameter P13 = ON).
Note: “Setpoint for electric heater” is limited by parameter “Maximum setpoint for
Comfort mode” (P10).
Electric heating in
heating mode
In heating mode, the valve receives an OPEN command if the acquired temperature is below the setpoint. The electric heater is used as an additional heating
source when the heating energy controlled by the valve is insufficient.
The electric heater receives an ON command, if the temperature is below “setpoint”
minus “setpoint differential” (= setpoint for electric heater).
Electric heating and
manual changeover
The electric heater is active in heating mode only and the control output for the
valve is permanently disabled when manual changeover is selected (P01 = 2).
Digital input “Enable
electric heater”
Remote enabling / disabling of the electric heater is possible via input X1, X2 or D1
for tariff regulations, energy savings, etc.
Input X1, X2, or D1 must be commissioned accordingly (parameters P38, P40,
P42). See section 3.9 “Multifunctional input”.
K NX
R
Enable electric heater
Note:
Caution
The electric heater can also be enabled / disabled via bus.
If “Enable electric heater” input is used via bus, then the function must not be
assigned to a local input X1, X2 or D1.
An electric heater must always be protected by a safety limit thermostat!
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ON/OFF control
The diagrams below show the control sequence for 2-position.
Heating mode
Cooling mode
(automatic changeover = heating or heating only)
(man. / auto. changeover = cooling or cooling only)
YE
Y1
wD
Y
YE
Y1
xdz
3076D05
Y
3076D06
Control sequence
ON/OFF output
1
1
w
0
½ SDH
T[°C]
½ SDH
T[°C]
½ SDC
½ SDC
½ SDH
½ SDH
½ SDH
w
0
½ SDH
Heating mode with manual changeover (P01 = 2) (manual changeover = heating)
T[°C] Room temperature
3076D07
Y
YE
W
1
w
0
Control command “Valve”
YE
Control command “Electric heater”
SDH Switching differential “Heating” (P30)
T[°C]
SDC Switching differential “Cooling” (P31)
½ SDH
½ SDH
Room temperature setpoint
Y1
Xdz
Dead zone (P33)
wD
Setpoint differential (P34)
Modulating control: 3-position, or PWM
The diagrams below show the control sequence for modulating control.
Heating mode
Cooling mode
(automatic changeover = heating or heating only)
(man. /auto. changeover = cooling or cooling only)
Y1
YE
wD
YE
xdz
Y1
100
100
0
Y [%]
3076D08
Y [%]
3076D09
Control sequence
modulating output
XpH w
XpH
0
T[°C]
XpH
T[°C]
w XpC
Heating mode with manual changeover (P01 = 2)
Y [%]
3076D10
(manual changeover = heating)
YE
100
T[°C] Room temperature
W
Room temperature setpoint
Y1
Control command “Valve”
YE
Control command “Electric heater”
XpH Proportional band “Heating” (P30)
0
XpH
Note:
w
T[°C]
XpC Proportional band “Cooling” (P31)
Xdz
Dead zone (P33)
wD
Setpoint differential (P34)
The diagrams only show the PI thermostat’s proportional part.
Setting the sequence and the control outputs
Refer to sections 3.4 "Applications", 3.6.1 "Sequences", and 3.7 "Outputs".
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3.6.5
2-pipe fan coil unit with radiator or floor heating
Heating or cooling with
radiator or floor heating
On 2-pipe applications with radiator, the thermostat controls a valve in heating /
cooling mode with changeover, heating only, or cooling only plus a radiator valve.
Cooling only is factory-set (P01 = 1).
Radiator, active in
cooling mode
In cooling mode, the valve receives an OPEN command if the acquired temperature is above the setpoint.
The radiator receives an ON command if the acquired room temperature drops
below “setpoint” minus “dead zone” (= setpoint for radiator).
Radiator in heating mode
In heating mode, the radiator receives an OPEN command if the acquired temperature is below the setpoint. The fan coil unit is used as an additional heat source
when the heat energy controlled by the radiator is insufficient.
The fan coil unit receives an ON command if the temperature is below “setpoint”
minus “setpoint differential” (= setpoint for fan coil unit).
Floor heating
The radiator sequence can also be used for floor heating.
The "Floor heating limitation” function is described on page 26.
The diagrams below show the control sequence for 2-position control.
Heating mode
Cooling mode
(automatic changeover = heating or heating only)
(man. /auto. changeover = cooling or cooling only)
Y1
wD
YR
YR
xdz
Y1
1
1
w
0
½ SDR
½ SDH
T[°C]
W
Y1
YR
Y
3191D121
Y
3191D120
ON/OFF control
T[°C]
½ SDR
½ SDH
Room temperature
Room temperature setpoint
Control command “Valve” or “Compressor”
Control command “Radiator”
w
0
½ SDC
½ SDR
SDH
SDC
SDR
Xdz
wD
T[°C]
½ SDC
½ SDR
Switching differential “Heating” (P30)
Switching differential “Cooling” (P31)
Switching differential “Radiator” (P32)
Dead zone (P33)
Setpoint differential (P34)
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Modulating control: 3-position or PWM
The diagrams below show the control sequence for modulating PI control.
Heating mode
Cooling mode
(automatic changeover = heating or heating only)
(man. / auto. changeover = cooling or cooling only)
wD
Note:
YR
xdz
Y1
100
100
0
Y [%]
3191D123
YR
Y1
3191D122
Y [%]
XpH
XpR
w
0
T[°C]
XpR
T[°C]
w XpC
T[°C] Room temperature
XpH Proportional band “Heating” (P30)
W
Room temperature setpoint
XpC Proportional band “Cooling” (P31)
Y1
Control command “Valve”
XpR Proportional band “Radiator” (P32)
YR
Control command “Radiator”
Xdz
Dead zone (P33)
wD
Setpoint differential (P34)
The diagrams only show the PI thermostat’s proportional part.
Setting the sequence and the control outputs
Refer to sections 3.4 "Applications", 3.6.1 "Sequences", and 3.7 "Outputs".
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3.6.6
4-pipe fan coil unit
Heating and cooling
On 4-pipe applications, the thermostat controls 2 valves in heating and cooling
mode, heating / cooling mode by manual selection, or heating and cooling mode
with changeover. Heating and cooling mode (P01 = 4) is factory-set.
4-pipe application with
manual changeover
The heating or cooling output can be released via operating mode button if
parameter P01 is set to Manual (P01 = 2).
"Main and secondary"
application (4-pipe with
changeover)
If parameter P01 is set to changeover (P01 = 3), the heating and cooling output is
swapped according to the input state of the changeover sensor / switch / bus input
(see automatic heating and cooling changeover sensor in section 3.5). This mode
is used for the so-called “Main and secondary” application. This is a 4-pipe fan coil
unit system with different capacities of the 2 coils. The water circuit is changed to
optimize the energy exchange depending on the season (summer / winter):
– Winter: Large coil (V1) for heating, small coil (V2) for cooling
– Summer: Large coil (V1) for cooling, small coil (V2) for heating
1
T B2
Changeover
YH
3181D117
3181D112
Y
YC
V2
w
0
T[°C]
w
V1
M1
T
B1
Notes:
YH
V1
YC
V2
Changeover
Note:
This example shows
ON/OFF control;
for modulating control, connect the
appropriate output
terminals
 The parameter for the heating and cooling changeover sensor (B2 in the above
diagram) must be set to 2 (X1 or X2, P38 or P40)
 The thermostat assumes winter operation when B2 > P37 (factory setting 28 °C)
 The thermostat assumes summer operation when B2 < P36 (factory setting 16 °C)
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The diagrams below show the control sequence for 2-position control.
Heating mode with manual selection
(P01 = 2)
Y
3076D01
Y
Cooling mode with manual selection
(P01 = 2)
Y1
3076D13
ON/OFF control
Y2
1
1
w
0
T[°C]
½ SDH
w
0
½ SDC
½ SDC
½ SDH
T[°C]
Heating and cooling mode (P01 = 04)
Y1
½ xdz
Y2
½ xdz
3076D11
Y
1
w
0
T[°C]
½ SDC
½ SDC
½ SDH
½ SDH
T[°C] Room temperature
w
Room temperature setpoint
Y1
Control command “Valve” (H)
Y2
Control command “Valve” (C)
SDH Switching differential “Heating” (P30)
SDC Switching differential “Cooling” (P31)
Xdz
Dead zone (P33)
Modulating control: 3-position, PWM or DC 0…10 V
The diagrams below show the control sequence of modulating PI control.
Heating mode with manual selection
(P01 = 2)
100
Y1
3076D14
Y [%]
3076D03
Y [%]
Cooling mode with manual selection
(P01 = 2)
Y2
100
0
XpH
T[°C]
w
0
T[°C]
w
XpC
Y [%]
Y1
Y2
½ xdz ½ xdz
3076D12
Heating and cooling mode (P01 = 04)
100
0
Note:
XpH
w XpC
T[°C]
T[°C]
Room temperature
w
Room temperature setpoint
Y1
Control command “Valve” heating
Y2
Control command “Valve” cooling
XpH
Proportional band “Heating” (P30)
XpC
Proportional band “Cooling” (P31)
Xdz
Dead zone (P33)
The diagrams only show the PI thermostat’s proportional part.
Setting the sequence and the control outputs
Refer to sections 3.4 "Applications", 3.6.1 "Sequences", and 3.7 "Outputs".
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3.6.7
4-pipe fan coil unit with electric heater
Heating and cooling with
auxiliary heater
On 4-pipe applications with electric heater, the thermostat controls 2 valves in
heating and cooling mode by manual selection, heating and cooling mode with
automatic changeover, heating only, or cooling only plus an auxiliary electric
heater. Heating and cooling is factory-set (P01 = 4).
Electric heating in
heating mode
The electric heater is used as an additional heat source when the heating energy
controlled by the valve is insufficient.
The electric heater receives an ON command when the temperature is below
“setpoint” minus “1/2 "dead zone" minus "setpoint differential" (= setpoint for
electric heater).
Digital input “Enable
electric heater”
Remote enabling / disabling of the electric heater is possible via input X1, X2, or
D1 for tariff regulations, energy saving, etc.
Input X1, X2, or D1 must be commissioned accordingly (parameters P38, P40,
P42). See section 3.9 “Multifunctional input”.
K NX
The electric heater can also be enabled / disabled via bus.
R
Enable electric heater
If the bus input is used, then the function must NOT be assigned to a local input
X1, X2 or D1.
An electric heater must always be protected by a safety limit thermostat!
Caution
4-pipe application with
manual changeover
The heating or cooling output can be released via operating mode button if
parameter P01 is set to Manual (P01 = 2).
“Main and secondary”
application
See section 3.6.6.
ON/OFF control
The diagrams below show the control sequence for 2-position control.
Y1
YE
Y
3181D125a
Y
Cooling mode with manual selection P01 = 2)
Y2
1
1
0
3181D126a
Heating mode with manual selection (P01 = 2)
w
½ SDH
T[°C]
½ SDH
½ SDH
w
0
½ SDC
½ SDC
T[°C]
½ SDH
WD
Y
YE
Y1
½ xdz
3181D113a
Heating and cooling mode (P01 = 4)
Y2
½ xdz
1
0
w
½ SDH
½ SDH
½ SDH
½ SDC
½ SDC
½ SDH
WD
T[°C]
T[°C] Room temperature
w
Room temperature setpoint
YE
Control command “El heater"
Y1
Control command “Valve” (H)
Y2
Control command “Valve” (C)
SDH Switching differential “Heating” (P30)
SDC Switching differential “Cooling” (P31)
Xdz
Dead zone (P33)
wD
Setpoint differential (P34)
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Modulating control: 3-position or PWM
The diagrams below show the control sequence of modulating PI control.
Y1
YE
100
Y [%]
3181D105a
Y [%]
Cooling mode with manual selection P01 = 2)
3181D1124a
Heating mode with manual selection (P01 = 2)
Y2
100
w
0
½ SDH
½ SDH
wD
w
XpH
T[°C]
0
XpC
T[°C]
Y [%]
Y1
YE
Y2
½ xdz ½ xdz
3181D114a
Heating and cooling mode (P01 = 4)
100
T[°C] Room temperature
w
Room temperature setpoint
YE
Control command “El heater"
(only ON/OFF)
Control command “Valve” (H)
(only PWM, not 3-position)
Control command “Valve” (C)
Y1
0
½ SDH
½ SDH
XpH
w XpC
wD
Note:
T[°C]
Y2
XpH Proportional band “Heating” (P30)
XpC Proportional band “Cooling” (P31)
Xdz
Dead zone (P33)
wD
Setpoint differential (P34)
The diagrams only show the PI thermostat’s proportional part.
Setting the sequence and the control outputs
Refer to sections 3.4 "Applications", 3.6.1 "Sequences", and 3.7 "Outputs".
Notes:
 Y1 can only be ON/OFF or PWM
 Y2 can be ON/OFF, PWM or 3-position
 YE can only be ON/OFF
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3.6.8
2-stage heating or cooling
2-stage heating
or cooling
On 2-stage applications, the thermostat controls 2 valves or compressors in
heating or cooling mode or changeover (automatically or manually).
“Cooling only" is factory-set (P01 = 1).
Heating mode
In heating mode, the 1st stage is activated if the acquired temperature is below the
setpoint.
The 2nd stage is activated if the acquired room temperature drops below “setpoint”
minus “setpoint differential”.
Cooling mode
In cooling mode, the 1st stage is activated if the acquired temperature is above the
setpoint.
The 2nd stage is activated if the acquired room temperature rises above “setpoint”
plus “setpoint differential”.
ON/OFF control
The diagrams below show the control sequence for 2-position control.
SDH
Y1
Y2
SDC
w
w
0
SDC
1
Y1
1
Y
3181D16a
SDH
Y2
Y
Cooling mode P01 = 1)
3181D15a
Heating mode (P01 = 0)
0
wD
TR [°C]
wD
TR [°C]
Changeover
Y
SDH
SDH
SDC
3181D17a
Changeover (P01 = 2 or P01 = 3)
1
0
wD
Room temperature setpoint
Y1
Control command “Stage 1"
Y2
Control command “Stage 2”
SDC Switching differential “Cooling” (P31)
w
wD
w
SDH Switching differential “Heating” (P30)
Y2
Y1
Y2
SDC
T[°C] Room temperature
TR [°C]
Xdz
Dead zone (P33)
wD
Setpoint differential (P34)
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Modulating control: 3-position or PWM
The diagrams below show the control sequence of modulating PI control.
XpH
XpH
100%
YE
Y
XpC
Y1
Y1
wD
XpC
100%
w
0%
3181D19a
Y
Cooling mode P01 = 1)
3181D18a
Heating mode (P01 = 0)
0%
TR [°C]
Y2
w
wD
TR [°C]
Changeover (P01 = 2 or P01 = 3)
Y
XpH XpC
XpH
XpC
3181D20a
T[°C] Room temperature
Changeover
100%
w
Room temperature setpoint
Y1
Control command “Stage 1"
Y2
Control command “Stage 2”
XpH Proportional band “Heating” (P30)
Y2
Y1
Y1
Y2
w
0%
wD
wD
Note:
XpC Proportional band “Cooling” (P31)
Xdz
Dead zone (P33)
wD
Setpoint differential (P34)
TR [°C]
The diagrams only show the PI thermostat’s proportional part.
Setting the sequence and the control outputs
Refer to sections 3.4 "Applications", 3.6.1 "Sequences", and 3.7 "Outputs".
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3.6.9
Chilled / heated ceiling and radiator applications
For chilled / heated ceiling and radiator,
 set the corresponding basic application
 disable the fan (P52)
The following applications are available:
Application for
chilled / heated ceiling, radiator
Chilled / heated ceiling with
changeover
Chilled / heated ceiling & el heater
(cooling only: disable el heater
via P13)
Chilled / heated ceiling and radiator
Set basic application
2-pipe
See
section
3.6.3
2-pipe and electric heater
3.6.4
2-pipe and radiator
3.6.5
Chilled ceiling and radiator
4-pipe
3.6.6
Cooling or heating 2-stage
2-stage heating or cooling
3.6.8
Sequences
H
C
El H + H
El H + C
C
H + rad
Rad + C
H+C
( \ )
( / )
( \ \ )
( \ / )
( / )
( \ r\ )
( r\ / )
( \ / )
H+H
C+C
( \ \ )
( / / )
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3.6.10 Setpoints and sequences
On changeover applications, the Comfort setpoints for heating and cooling
sequence are the same (w).
2-pipe and 2-stage
applications
On 2-pipe applications with electric heater, the Comfort setpoint is either at the first
heating sequence (in heating mode) or at the cooling sequence (in cooling mode).
On 2-pipe applications with radiator, the Comfort setpoint is either at the radiator
sequence (in heating mode) or at the cooling sequence (in cooling mode).
The setpoints for Economy and Protection mode are below the Comfort setpoints
(heating) and above the Comfort setpoints (cooling).
They can be set via parameters P11, P12 (Economy mode) and P65, P66
(Protection mode).
w
wHeatEco
wCoolProt
T[°C]
3181D127
wHeatProt
wCoolEco
Comfort mode
Heating
Application
Economy / Protection mode
Cooling
Y
Heating
Y
Cooling
Y
Y
2-pipe
W
2-pipe and
electric
heater
2-pipe and
radiator
Y
YE
2)
Y
W
Y
T
YR
T
Y
W
T
YE
T
2)
WHeatEco/Prot
Y
W
T
Y
Y
W
Y
WHeatEco/Prot
T
YE1)
T
YR
W
2-stage
heating or
cooling
W
T
Y
T
YR
WHeatEco/Prot
T
YE1)
WHeatEco/Prot WCoolEco/Prot T
Y
T
Y
W
WCoolEco/Prot T
YR
WHeatEco/Prot WCoolEco/Prot T
Y
WHeatEco/Prot
T
WCoolEco/Prot T
1) If P13 = ON
2) In case of manual changeover (P01 = 2), the first heating sequence is disabled to prevent heating
(electric heater) and cooling (coil) at he same time
W = setpoint in Comfort mode
WHeatEco/Prot = setpoint heating in Economy or Protection mode
WCoolEco/Prot = setpoint cooling in Economy or Protection mode
YR = radiator sequence
YE = electric heater sequence
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On 4-pipe applications, the Comfort setpoint (w) is in the middle of the dead zone,
between the heating and cooling sequence.
4-pipe applications
The dead zone can be adjusted via parameter P33.
If manual changeover is selected, then either the cooling sequence or the heating
sequence is released. In this case, the Comfort setpoint is at the selected heating
or cooling sequence.
Economy /
Protection mode
Heating and/or
cooling
Comfort mode
Application
4-pipe
Y
Y
Cooling only 1)
Y
W
4-pipe and
electric
heater
Heating only 1)
Heating and cooling
W
T
YE
Y
W
Y
T
W
T
YE
Y
T
Y
W
T
WHeatEco/Prot WCoolEco/Prot T
Y
W
T
YE
WHeatEco/Prot WCoolEco/Prot T
1) Manual changeover, P01 = 2
W = setpoint in Comfort mode
WHeatEco/Prot = heating setpoint for Economy or Protection mode
WCoolEco/Prot = cooling setpoint for Economy or Protection mode
YE = electric heater sequence
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Overview of control
outputs
3.7
Control outputs
3.7.1
Overview
Different control output signals are available. They need to be defined during
commissioning (see below).
Control output
Product no.
RDG100KN
ON/OFF control signal
(2-position)
2-position
2-position
PWM
3-position
DC 0…10 V
Y1, Y2, Y3
(3 x NO)
Y1, Y3,
(2 x PWM)
Y1/Y2, Y3/Y4
(2 x / )
---
The valve receives the OPEN/ON command via control output Y1 or Y3 when…
1. the acquired room temperature is below the setpoint (heating mode) or above
the setpoint (cooling mode).
2. the control outputs have been inactive for more than the “Minimum output
OFF-time” (factory setting 1 minute, adjustable via parameter P48).
OFF command when…
1. the acquired room temperature is above the setpoint (heating mode) or below
the setpoint (cooling mode).
2. the valve has been active for more than the “Minimum output on-time” (factory
setting 1 minute, adjustable via parameter P49).
Electric heater control
signal
(2-position)
The electric heater receives an ON command via the auxiliary heating control
output (Y…, see Mounting Instructions) when…
1. the acquired room temperature is below the “Setpoint for electric heater”
2. the electric heater has been switched off for at least 1 minute
The OFF command for the electric heater is output when…
1. the acquired room temperature is above the setpoint (electric heater)
2. the electric heater has been switched on for at least 1 minute
Caution
A safety limit thermostat (to prevent overtemperatures) must be provided externally.
3-position
control signal
Heating: Output Y1 provides the OPEN command, and Y2 the CLOSE command
to the 3-position actuator. Cooling: Same with Y3 and Y4.
The factory setting for the actuator's running time is 150 seconds. It can be
adjusted via parameters P44 (Y1 and Y2) or P45 (Y3 and Y4).
The parameters are only visible if 3-position is selected via DIP switches 4 and 5.
Synchronization
1. When the thermostat is powered up, a closing command for the actuator
running time + 150% is provided to ensure that the actuator fully closes and
synchronizes to the control algorithm.
2. When the thermostat calculates the positions "fully close" or "fully open", the
actuator's running time is extended + 150% to ensure the right actuator
position is synchronized to the control algorithm.
3. After the actuator reaches the position calculated by the thermostat, a waiting
time of 30 seconds is applied to stabilize the outputs.
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The demand calculated by PI control from the current room temperature and setpoint is provided via Y1 and Y3 to the valve actuator as a PWM (pulse width
modulation) signal for thermal actuators. The output is activated for a period
proportional to the heating / cooling demand and then switched off for the rest of
the PWM interval.
PWM control
The interval is 150 seconds (factory setting). It can be adjusted via parameters
P44 (Y1) or P45 (Y3). These parameters are only visible if 2-position is selected via
DIP switches 4 and 5 and if PWM is selected via P46 and P47.
PWM for thermal
valve actuators
For thermal valve actuators, set the running time to 240 seconds.
Note!
 Never apply PWM to a motorized actuator
 It is not possible to ensure exact parallel running of 2 or more thermal valve
actuators. If several fan coil systems are controlled by the same room
thermostat, preference should be given to motorized actuators
For electric heaters, set the running time to 90 seconds.
To avoid burn-off of mechanical contacts by frequent switching, use a current valve
in place of a relay or contactor.
PWM for electric heaters
3.7.2
Control outputs configuration (setting via DIP switches
4/5 or tool, and parameters P46/P47)
The type of the control outputs (2- or 3-position) is set via DIP switches 4 and 5.
The patterns of DIP switches 4 and 5 are as follows:
ON
OFF
OFF
1
Y1/Y2 =
Y3/Y4 =
Notes:
ON
2
3
4
5
ON
OFF
1
2
2-position
2-position
3
4
5
2-position
3-position
3181D101
ON
OFF
1
2
3
4
5
3-position
2-position
1
2
3
4
5
3-position
3-position
 If 2-position is selected, the factory setting is ON/OFF. If you want PWM (pulse
width modulation), set parameters P46 and/or P47 to 2 = PWM
 4-pipe with electric heater: As the electric heater requires 1 of 4 outputs,
only the cooling valve actuator can be 3-position
 DIP switches 4 and 5 have no impact if the application is commissioned via tool.
Control outputs need to be set via ACS in this case
For details concerning connection of peripheral devices and setting of the DIP
switches, refer to the Mounting Instructions M3191 [3].
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3.8
Fan control
The fan operates in automatic mode or at the selected speed with manual mode.
In automatic mode, the fan speed depends on the setpoint and the current room
temperature. When the room temperature reaches the setpoint, the control valve
closes and the fan switches off or stays at fan speed 1 (parameter P60; factory
setting: 0 = fan speed 1 in dead zone).
K NX
R
Fan command value
Enable fan command
value
K NX
The fan speed and mode can be changed via bus.
For this purpose, the fan command value needs to be enabled.
R
The fan speed and mode can be monitored via bus.
Fan operation
Fan stage 1-2-3
Fan output
3-speed fan control
with modulating
heating / cooling
control
The individual switching points for ON of each fan stage can be adjusted via control
parameters P55…P57. The fan speed switch off point is 20% below the switch on
point. The diagrams below show fan speed control for modulating PI control.
Q
Q3
Q2
Q1
100
YH[%]
Note:
3-speed fan control
with ON/OFF heating /
cooling control
0
XpH
w
xdz
100
0
Room temperature setpoint
Q
YH
Fan speed
Control demand “Heating”
YC
Control demand “Cooling”
XpH
Proportional band “Heating”
XpC
Proportional band “Cooling”
Xdz
Dead zone
YC[%]
XpC
The diagram only shows the PI thermostat’s proportional part.
On applications with 2-position control:
1) The switching point for low fan speed (Q1) is synchronized to the heating /
cooling output. Parameter “Switching point fan speed low” P57 is not relevant.
2) The maximum switching range of the fan (XpHFan / XpCFan) is defined by the
switching differential (SDH/SDC) via a look-up table.
Y
xdz
1
0
w
SDH
T[°C]
SDC
Q
Q3
Cool
T[°C]
Room temperature
w
Q
Room temperature setpoint
Fan speed
Y
Control command “Valve”
SDH
Switching differential “Heating”
SDC
Switching differential “Cooling”
Xdz
Dead zone
XpHFan Switching range for fan “Heating”
Q2
XpCFan Switching range for fan “Cooling”
Q1
XpHFan
Look-up table with
ON/OFF control
w
SDH/SDC
[K]
XpHFan/XpCFan [K]
w
0.5
2
T[°C]
XpCFan
1.0
3
1.5
4
2.0
5
2.5
6
3.0
7
3.5
8
4.0
9
>4.5
10
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1-speed / 3-speed fan
The thermostat can control a 1- or 3-speed fan (selected via control parameter
P53). A 1-speed fan is connected to terminal Q1, a 3-speed fan to terminals Q1,
Q2 and Q3.
Fan operation as per
heating / cooling mode,
or disabled
Fan operation can be limited to be active with cooling only or heating only, or even
be totally disabled via control parameter “Fan operation” P52.
When fan operation is disabled, the fan symbol on the display disappears and
pressing the fan button has no impact.
This function allows you to use the thermostat on universal applications such as
chilled / heated ceilings and radiator, etc. (see section 3.6.9).
Fan minimum
on- time
In automatic mode, a dwelling time of 2 minutes (factory setting) is active. The fan
maintains each speed for at least 2 minutes before it changes to the next speed.
his minimum on-time can be adjusted from 1…6 minutes via parameter P59.
Fan operation in dead
zone (fan kick)
In automatic fan mode and with the room temperature in the dead zone, the control
valve is normally closed and the fan disabled. With the “Fan kick” function, the fan
can be released from time to time at low speed for minimum on-time (see above)
even if the valve is closed.
This function can be used to avoid damage from moisture due to a lack of air circulation, or to allow a return air temperature sensor to acquire the correct room
temperature.
Y
10385D22en
Q1
0
t [h:mm]
Periodic fan kick
Minimum
on-time
Periodic fan kick
Minimum
on-time
The periodic fan kick time can be selected individually for Comfort mode via
parameter P60, and for Economy mode via parameter P61.
Note: Fan kick value “0” means the fan runs continuously in the dead zone.
Fan kick value “OFF” means the fan does not run in the dead zone.
Q
1 sec
Q3
3181D22
When the fan starts from standstill, it starts at speed 3 for 1 second to ensure safe
fan motor start by overcoming inertia and friction (selected via parameter P58).
Fan start
Q2
Q1
0
Fan overrun for electric
heater
Fan failure
T
When the electric heater is switched off, the fan overruns for 60 seconds
(parameter P54) to avoid overtemperature of the electric heater or prevent the
thermal cutout from responding.
In case of fan failure, the thermostat cannot protect the electric heater against
overtemperature. For this reason, the electric heater must feature a separate safety
device (thermal cutout).
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Clean fan filter
reminder
The “Clean fan filter reminder” function counts the fan operating hours and displays
“ to remind the user to clean the fan filter as soon as the threshold
message “FIL
is reached. This does not impact the thermostat's operation, which continues to run
normally.
K NX
The “Clean filter reminder” is reset when the operating mode is manually set to
Protection and back.
R
Fault information
Fan in Auto Timer
mode
In Auto Timer mode , the default fan mode is automatic. The fan mode can be
changed to Manual by pressing the FAN button. The fan returns to the automatic
default mode after each switchover from Comfort to Economy mode, and vice
versa.
Fan start delay
(2-position control only)
To let the heating / cooling coil reach its temperature, the fan start can be delayed
by a time period set via parameter P67.
3181D23
Y
1
0
T
Q
P67
T
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3.9
Multifunctional input, digital input
The thermostat has 2 multifunctional inputs X1 and X2 and a digital input D1.
An NTC type sensor like the QAH11.1 (AI, analog input) or a switch (DI, digital
input) can be connected to the input terminals. The functionality of the inputs can
be configured via parameters P38 + P39 for X1, P40 + P41 for X2, and P42 + P43
for D1.
K NX
The current temperature or state of the inputs X1/X2 and D1 is available on bus for
monitoring purposes.
R
The parameters can be set to the following values:
#
0
1
2
K NX
Function of
input
Not used
External / return
air temperature
Heating / cooling
changeover
Description
No function.
Sensor input for external room temperature sensor or
return air temperature sensor to acquire the current
room temperature, or floor heating temperature sensor
to limit the heating output.
Note: The room temperature is acquired by the built-in
sensor if the floor temperature limitation function is
enabled via parameter P51.
Sensor input for “Automatic heating / cooling
changeover” function.
A switch can also be connected rather than a sensor
(switch closed = cooling, see section 3.5).
Type
X1/X2
-AI
Type
DI
---
AI /
DI
DI
DI
DI
DI
DI
DI
DI
R
Heating / cooling changeover is also possible via bus.
In this case, the function must not be assigned to any
local input X1, X2, D1. See also section 3.5.
Heating/
cooling
changeover
Diagnostic value 0 ˚C is displayed for closed contact /
100 ˚C for open contact, if a switch is connected.
3
K NX
Operating mode
switchover
R
Window
state
K NX
4
Dew point
monitor
5
Enable electric
heater
R
Enable electric heater
Digital input to switch over the operating mode to
Economy.
If the operating mode switchover contact is active, user
operations are ineffective and “OFF” is displayed.
Operating mode switchover is also possible via bus. In
this case, the function must not be assigned to any local
input X1, X2, D1. See also section 3.2.
Digital input for a dew point sensor to detect
condensation. Cooling is stopped if condensation
occurs.
Digital input to enable / disable the electric heater via
remote control.
Enable electric heater is also possible via bus. In this
case, the function must not be assigned to any local
input X1, X2, D1. See also section 3.6.
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#
6
K NX
Function of
input
Fault
7
Monitor input
(Digital)
Digital input to signal an external fault (example: dirty air
filter).
If the input is active, “ALx” is displayed and a fault is
sent on the bus. See also section 3.11.8.
(Alarm x, with x = 1 for X1, x = 2 for X2, x = 3 for D1).
Note: Fault displays have no impact on the thermostat's
operation. They merely represent a visual signal.
Digital input to monitor the state of an external switch via
bus.
8
Monitor input
(Temperature)
Sensor input to monitor the state of an external sensor
(e.g. QAH11.1) via bus.
R
Fault
information
K NX
R
D1, X1, X2
(Digital)
K NX
R
Description
X1, X2
(Temp.)



Type
X1/X2
DI
Type
DI
DI
DI
DI
AI
--
Operational action can be changed between normally open (NO) and normally
closed (NC) via parameter P39, P41 (or P43 if it is a digital input)
Each input X1, X2 or D1 must be configured with a different function (1…5).
Exception: 1, 2 or 3 inputs can be configured as fault (6) or monitor input (7,8)
X1 is factory-set to “External sensor” (1), X2 to “Not used” (0), and D1 to
“Operating mode switchover” (3)
For more detailed information, refer to section 3.4 “Applications”.
3.10 Handling faults
Temperature out
of range
When the room temperature is outside the measuring range, i.e. above 49 °C or
below 0 °C, the limiting temperatures blink, e.g. “0 °C” or “49 °C”.
In addition, the heating output is activated if the current setpoint is not set to “OFF”,
the thermostat is in heating mode and the temperature is below 0 °C.
For all other cases, no output is activated.
The thermostat resumes Comfort mode after the temperature returns to within the
measuring range.
K NX
R
For fault status messages on the bus, see section 3.11.8.
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3.11 KNX communications
The RDG KNX thermostats support communications as per the KNX specification.
S-mode
Standard mode; engineering via group addresses.
LTE mode
Logical Tag Extended mode, for easy engineering,
is used in conjunction with Synco.
3.11.1 S-mode
This mode corresponds to KNX communications.
Connections are established via ETS3 Professional by assigning communication
objects to group addresses.
3.11.2 LTE mode
LTE mode was specifically designed to simplify engineering. Unlike with S-mode,
there is no need to create the individual connections (group addresses) in the tool.
The devices autonomously establish connections.
Definitions
To make this possible, the following circumstances are predefined:
 Every device or subdevice is located within a zone
 Every data point (input or output) is assigned to a zone
 Every data point (input or output) has a precisely defined "name"
Whenever an output and an input with the same "name" are located in the same
zone, a connection is established automatically, as shown in the following diagram.
RDF / RDG
Time Switch
Geogr. zone 2.5.1 or 2.1.1
Geogr. zone 2.5.1
Room temperature
Operating mode
Operating mode
Chiller
Refr. distr zone 1
Refr. distr zone 1
Cool demand
Cool demand
Boiler
Heat distr zone 1
Heat distr zone 1
Heat demand
Heat demand
Sensor
Outside temperature
Outside temperature zone 1
Outside temperature
3171Z2en
Outside temperature zone 1
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Engineering and
commissioning
 For a detailed description of KNX (topology, bus supply, function and setting of
LTE zones, filter tables, etc.), see "Communication via the KNX bus for Synco
700, 900 and RXB/RXL, Basic Documentation" [6]
 LTE mode data points and settings are described in the Synco Application
Manual [12]
 To engineer and commission a specific system, use the Synco700 planning and
commissioning protocol (XLS table in HIT, [7])
3.11.3 Zone addressing in LTE mode (in conjunction with
Synco)
In cases where RDG KNX room thermostats are used in LTE mode (e.g. in
conjunction with Synco), zone addresses need to be allocated.
The following zone address must be defined together with the Synco devices at the
planning stage depending on the application.
Short description
Geographical zone (apartment)
Geographical zone (room)
Heat distr zone heating coil
Refr distr zone cooling coil
Heat distr zone heating surface
Factory setting
--- (out of service)
1
1
1
2
Parameter
P82
P83
P84
P85
P86
Note: “Subzone” of “Geographical zone” is fix 1 (not adjustable)
The device will send and receive LTE communication signals only if the zone
address is valid (not OSV = out of service).
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The zones to be defined are as follows:
Geographical zone
(space zone)
Zone in which an RDG KNX thermostat is physically located. Other
room-specific devices may also be located in this zone.
(Apartment . Room . Subzone)
Apartment = ---, 1...126
Room
= ---, 1...63
Subzone
= fix 1
Information exchanged in this zone is related specifically to the device
like operating mode, setpoints, room temperature, etc.
The designations "Apartment", "Room" and "Subzone" do not need to
be taken literally. For example, Apartment can be used to refer to a
group of rooms, floor or section of a building. ”Room", however, really
does refer to a room.
Subzone is not used for HVAC devices. It is more relevant to other
disciplines, such as lighting. Subzone is fix at “1” and not visible.
The time switch information is expected from the same zone where
the thermostat is located (Residential).
If no time switch information is received from the same zone, the
thermostat will use the information received from the same apartment
but with room “1“ A.1.1 (Office).
Legend:
D = device address (P81)
G = geographical zone (P82, P83)
(Apartment.Room.Subzone)
Heat distribution zone
heating coil
Zone
= ---, 1...31
Heat distribution zone
heating surface
(radiator)
Zone
= ---, 1...31
Refrigeration
distribution zone
cooling coil
Zone
4
D: 004
G: 4.1.1
Server room
D: 003
G: 2.2.1
Office 2
2
1
D: 11
G: 1.2.1
Office 1
2
D: 002
G: 2.1.1
Corridor
D: 12
G: 1.3.1
Meeting room
3
D: 001
G: 3.1.1
Information related specifically to the hot water system in heating coils
is exchanged within this zone. The zone also includes a Synco device
to process the information (e.g. RMH7xx or RMU7xx with
changeover).
Information related specifically to the hot water system of a radiator is
exchanged within this zone (e.g. heating demand). This zone also
includes a Synco device to process the information (e.g. RMH7xx or
RMB7xx).
Information related specifically to the chilled water system is
exchanged within this zone (e.g. cooling demand). This zone also
includes a Synco device to process the information (e.g. RMU7xx).
= ---, 1...31
Outside temperature
zone
Zone
D: 10
G: 1.1.1
3171z201
Example:
Commercial building
In a commercial building, the
time switch information is sent by
the RMB975 central control unit.
The zones are divided in so
called “Room groups” (e.g. 1...4),
where each “Room group” can
have an individual schedule. A
room thermostat in the same
“Room group” need to have the
same Apartment Address.
= fix 1
Outside temperature received in outside temperature zone 1 will be /
can be displayed on the room thermostat when commissioned
accordingly (parameter P07 = 2).
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3.11.4 Example of heating and cooling demand zone
The building is equipped with Synco controls on the generation side and RDF /
RDG thermostats on the room side.
Konnex TP1
RMH760
Controller 1
RMB795
Controller 3
Controller 2
RDF...
Controller 4
RDU...
Controller 5
RDG...
P3171Z01
RMH760
Controller 6
T
V M
2
T
T
T
T
T
T
1
Heat source
DHW heating
Heating circuit
fan coil
Fan coil
room A
Heat demand
VAV box
room B
Fan coil
room C
Heat demand
Heat requistion
Heat requistion
Heat demand
Heat demand
Heat demand
Heat distr zone
source side: 1
Heat distr zone 1
Heat distr zone 2
Setting values
Controller 1
Controller 2
Explanation relating to
the illustration
Heat distr zone 2
Controller 3
Controller 4
Heat distr zone 2
Controller 5
Heat distr zone 2
Controller 6
In the case of a typical application, the individual RDF / RDG room thermostats –
when used with the RMB975 central control unit – signal their heat demand directly
to the primary controller (in the above example to the RMH760).
(1) and (2) designate the numbers of the distribution zone.
Notes:
 This type of application can analogously be applied to refrigeration distribution
zones
 If no 2-pipe fan coil is used, heat and refrigeration demand signals are sent
simultaneously to the primary plant
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3.11.5 Send heartbeat and receive timeout
In a KNX network, S-mode and LTE mode communication objects can be exchanged
between individual devices. The Receive timeout defines the period of time within
which all the communication objects requested from a device must have been
received at least once. If a communication object is not received within this period, a
predefined value is used.
Similarly, the Send heartbeat defines the period of time within which all the communication objects requested must be transmitted at least once.
LTE mode / S-mode
Fixed times are specified as follows:
– Receive timeout: 31 minutes
– Send heartbeat: 15 minutes
Reducing the bus load
Individual zones can also be disabled (out of service) via control parameter if they
are not being used. In disabled zones, the LTE signal will no longer be periodically
sent, and will therefore reduce bus load.
3.11.6 Startup
Startup response
The application is restarted after every reset, so that all the connected motorized
valve actuators are synchronized (see "Control outputs", 3.7).
Startup delay
After a reset, it takes up to 5 minutes for all the connected room thermostats to
restart. This is designed to avoid overloading the mains power supply when
restarting. At the same time, it reduces the load on the KNX network, as not all
thermostats transmit data at the same time. The delay (TWaitDevice) is determined by
the thermostat's device address. After the delay, the device starts to send.
K NX
3.11.7 Heating and cooling demand
R
Heating output primary
Heating output
secondary
Cooling output primary
Cooling output
secondary
In conjunction with Synco, the heating and/or cooling demand from each room is
transmitted to the BACS to provide the required heating or cooling energy.
An example for LTE mode is described in section 3.11.4.
In S-mode, the current state signals of the control outputs are available.
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3.11.8 Fault function on KNX
If a fault occurs (e.g. digital fault input, dew point, communication configuration,
etc.) then a fault will be sent on the bus.
An RDG thermostat listens on the bus and sends its fault when the fault has the
highest alarm priority. This ensures that the management station does not miss any
alarms.
If alarms occur at the same time, the alarm with the highest priority will be first
displayed and sent on the bus.
K NX
Fault transmission is different in LTE mode and S-mode:
R
S-mode
Fault state
Fault information
(internal
information)
LTE mode
Alarm info (error code + internal information)
Alarm text (default text can be edited with ACS700 tool)
The table below shows the error code and default alarm texts.
Prio
Fault
1
No fault
Bus power supply**)
Thermostat
Fault information on bus
Display
Error code
Default fault text
0
5000
No fault
No bus power
supply

---
6001
>1 id device address
---
4930
Condensation in the
room

--bus
Text
adjustable *)
2
Device address error
3
Condensation
4
External fault input X1
AL1
9001
Fault input 1

5
External fault input X2
AL2
9002
Fault input 2

6
External fault input D1
AL3
9003
Fault input 3

7
Clean filter reminder
FIL
3911
Dirty filter

Addr
*)
Default alarm texts are stored in the thermostat’s non-volatile memory and can
be adjusted using the ACS700 commissioning tool
**) This error will not be sent on bus (because there is no bus!)
Priority of alarms
 Priority order is #1…7
 External faults #4…6: If faults are active, the display will show AL1, AL2, AL3,
alternating. On the bus, only the fault with the highest priority will be sent
K NX
A supervisor alarm system may command the thermostat to stop sending faults to
the bus via the communication object “Fault transmission” (disable / enable).
This has no impact on the local display of faults.
R
Fault transmission
After a timeout of 48 hours, the sending of faults will automatically be enabled
again.
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RDG100KN Basic documentation
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3.12 Communication objects (S-mode)
3.12.1 Overview
Page
Object # and name
Thermostat
12
12
1
3
12
44 Outside temperature
14
12 Room operating mode:
Time switch 1)
7 Room operating mode:
Preselection 1)
20 Room operating mode:
Window state
14
13, 15,
50
21
21
Object # and name
Page
System time
Time of day
22 Room temperature:
Comfort basic setpoint
23 Room temperature:
Comfort setpoint
29
31 Application mode
47
32 Enable fan command value
47
34 Fan command value
32, 50
29 Enable electric heater
25, 50
30 Heating/cooling changeover
57
6
Fault transmission
1)
2)
21 Room temperature
16 Room operating mode:
State 1)
24 Room temperature:
Current setpoint
12
13
33 Fan operation
(0 = Auto / 1 = Manual)
35 Fan output
36 Fan stage 1
47
47
47
37 Fan stage 2
47
38 Fan stage 3
47
25 Heating output primary 2)
26 Heating output secondary
2)
27 Cooling output primary 2)
28 Cooling output secondary 2)
56
56
43 D1
39/40 X1 (temperature / digital)
41/42 X2 (temperature / digital)
51
51
51
5 Fault state
4 Fault information
22
56
56
27, 57
27, 49,
51, 57
Input communication object
Output communication object
Input & output communication object
8-bit and 1-bit object available, selectable via parameter in ETS3
Availability depending on selected application / function
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3.12.2 Description of communication objects
Obj
1
Object name
System time
Function
Type/ length
Flags
Time and
19.001
CWU
date
8 Byte
System time for display on the room thermostat. See parameter
P07 (3 or 4)
3
Time of day
Time and
10.001
CWU
date
3 Byte
Another object for receiving the time of day for display on the room
thermostat. See parameter P07 (3 or 4)
4
Fault information
Alarm
219.001
CT
Info
6 Byte
Common alarm output. If an alarm occurs, the alarm number is
transmitted
5
Fault state
Faulty /
1.005
CT
normal
1 bit
Common alarm output. If an alarm occurs, the alarm flag is set
6
Fault
Enable /
1.003
CWU
transmission
disable
1 bit
A supervisor alarm system can disable the broadcasting of alarms
by the devices. This has no impact on the local display of alarms.
After a timeout of 48 hours, the sending of faults will automatically
be enabled again.
7
Room operating
Auto
20.102
CWTU
mode:
Comfort
1 Byte
Preselection
PreComf.
Economy
Protection
Controls the room operating mode selection of the thermostat via
bus.
The command can also be submitted as four 1-bit communication
objects (8...11). The last interaction wins – either from local
operating mode button or via bus.
Note: The thermostat will transform Precomfort either into
Economy or Comfort (selectable via P88).
Operating mode:
Trigger
1.017
CW
Preselection
1 bit
8
Auto
9
Comf
10
Eco
11
Prot
Switch room operating mode to either Auto, Comfort, Economy or
Protection.
The last interaction wins – either from the local operating mode
button or via bus.
12
Room operating
Comfort
20.102
CWU
mode: Time
Economy
1 Byte
switch
PreComf.
Protection
This information is provided by a central time switch or a
supervisor and defines the actual HVAC operating mode.
The command can also be submitted via three 1-bit
communication objects (13...15).
Protection has the highest priority and cannot be overridden.
Note: The thermostat will transform Precomfort either into
Economy or Comfort (selectable P88).
Time switch
Trigger
1.017
CW
13
Comfort
1 bit
14
Economy
15
Protection
Switch the HVAC mode to either Comfort, Economy or Protection
mode.
Obj
16
Object name
Room operating
mode: State
Function
Type/ length
Flags
Comfort
20.102
CRT
Economy
1 Byte
Protection
Effective room operating mode used by the thermostat
(considering time switch, user selection, window contact, etc.) This
state information is available via one 8-bit enumeration or three 1bit communication objects (17...19). Note: The thermostat does not
support Precomfort.
Room operating
ON
1.002
CT
mode:
OFF
1 bit
17
State Comfort
18
State Economy
19
State Protection
Corresponding communication object sends "True"
20
Window state
Open
1.019
CWU
Closed
1 bit
The thermostat is set to Economy mode if value “1” (open) is
received. It switches back to the previous mode when the value is
“0” (closed).
"Window state" is sent e.g by a KNX switch or a KNX presence
detector. It has the same effect as the local operating mode
switchover contact X1, X2, D1 (parameter P38, P40, P42).
Only one input source must be used, either local input X1/X2/D1 or
KNX bus.
21
Room
Temp.
9.001
CRT
temperature
value
2 Bytes
The value of the room temperature measured via built-in or
external sensor is available via this communication object.
22
Room temperaTemp.
9.001
CWU
ture: Comfort
value
2 Bytes
basic setpoint
If function "Temporary setpoint" is enabled via parameter P69, then
after an operating mode change, the setpoint adjustments made by
the user and via communication object 23 will be dismissed and
the thermostat will be reset to the Comfort basic setpoint.
Note: Setpoints that have been changed via the local HMI may be
overwritten during a system startup from a central master
controller, e.g.RMB795.
The Comfort basic setpoint is stored in EEPROM (see section
3.3.2).  The service life of the EEPROM depends on the number
of write cycles. Never write this communication object cyclically!
23
Room
Temp.
9.001
CWTU
temperature:
value
2 Bytes
Comfort setpoint
Communication object used to shift the setpoint used by the
thermostat (see section 3.3.2). Same priority as local setpoint shift
on the thermostat. The last intervention wins.
Note: The Comfort basic setpoint (object 22) will not be changed.
24
Current setpoint
Temp.
9.001
CRT
value
2 Bytes
Current setpoint, including shift, compensation, etc., used by the
thermostat for temperature control.
25
Heating output
0…100 % 5.001
CRT
primary
8 bit
Indicates the position of the heating actuator of first stage.
E.g. 2-pipe with electric heater application: Output of heating coil.
26
Heating output
0…100% 5.001
CRT
secondary
8 bit
Indicates the position of the heating actuator of the second stage.
E.g. 2-pipe with electric heater application: Output of the electric
heater.
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Obj
27
Object name
Function
Type/ length
Flags
Cooling output
0…100%
5.001
CRT
primary
8 bit
Indicates the position of the cooling actuator of the first stage.
E.g. 2-pipe with electric heater application: Output of the cooling
coil.
28
Cooling output
0…100%
5.001
CRT
secondary
8 bit
Indicates the position of the cooling actuator of the second stage.
E.g. 2-stage changeover application: Output of the second cooling
stage.
29
Enable electric
Enable /
1.003
CWU
heating
disable
1 bit
An electric heater can be disabled with this communication object
(e.g. to meet tariff regulations).
The same function is also available via local multifunctional input
X1/X2/D1 (parameter P38, P40, P42).
Only one input source must be used, either local input X1/X2/D1or
KNX bus.
30
Heating / cooling
Heat /
1.100
CWU
changeover
Cool
1 bit
Changeover information transmitted via bus.
Default: Current mode before power down.
The same function is also available via local multifunctional input
X1/X2/D1 (parameter P38, P40, P42).
Only one input source must be used, either local input X1/X2/D1or
KNX bus..
31
Application mode
HVAC
20.105
CWU
control
8 bit
mode
0
Auto (default)
Heating and/or cooling
1
Heat
Heating only
2
Morning warmup*
Heating only
3
Cool
Cooling only
5
Precool*
Cooling only
6
OFF
Neither heating nor cooling
8
Emergency heat*
Heating only
9
Fan only
Fan runs at high speed
* Function handled like Heat (1) or Cool (3)
32
Enable fan
Enable
1.003
CWU
command value
Disable
1 bit
Set fan mode to Auto (disable) or Manual (enable) by a KNX
control unit. If Manual, the value received on Fan command value
(34) will be used to command the fan speed.
Default: Enable
The last interaction wins – either from the local fan mode button or
via bus.
Obj
33
Object name
Fan operation
Function
Type/ length
Flags
Auto
1.001
CRT
Manual
1 bit
Indicates the status of the fan mode: Auto (0) or Manual (1).
34
Fan command
0…100%
5.001
CWU
value
8 bit
The fan can be set to a specified speed by a KNX control unit
when manual fan operation is enabled.
Speed
Fan command value (physical KNX value)
1
1...33%
(1…85)
2
34…67% (86...170)
3
68…100% (171…255)
Fan speed “0” is not supported by the thermostat and the fan
speed will remain unchanged.
35
Fan output
0…100%
5.001
CRT
8 bit
Indicates the current fan speed as a value 0...100%
Speed
Fan output (physical KNX value)
OFF
0%
(0)
1
33%
(84 )
2
66%
(186)
3
100% (255)
36
Fan speed 1
ON
1.001
CRT
37
Fan speed 2
OFF
1 bit
38
Fan speed 3
Indicate the state of the relay outputs
39
X1: Temperature
Temp.
9.001
CRT
40
X2: Temperature
value
2 Byte
Indicate the values of the temperature sensors connected to the
local inputs X1 / X2
41
X1: Digital
ON
1.001
CRT
42
X2: Digital
OFF
1 bit
43
D1: Digital
Indicate the status of the digital inputs (adjusted by parameters
P39/P41/P43) including considering of operating action
44
Outside
Temp.
9.001
CWU
temperature
value
2 Byte
The outside temperature measured by a KNX sensor can be
displayed on the thermostat, if parameter P07 "Additional user
information” is set = 2 (outside temperature).
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3.13 Control parameters
A number of control parameters can be readjusted to optimize control performance.
This can be done on the thermostat via HMI or via commissioning / operating tool.
These parameters can also be set during operation without opening the unit.
In the event of a power failure, all control parameter settings are retained.
The control parameters are assigned to 2 levels:
 “Service level”, and
 “Expert level” including communications, diagnostics and test
The “Service level” contains a small set of parameters to set up the thermostat for
the HVAC system and to adjust the user interface. These parameters can be
adjusted any time.
Change parameters at the “Expert level” carefully, as they impact the thermostat’s
control performance and functionality.
3.13.1 Parameter setting via local HMI
Enter only “Service
level”
1.
Press left and right button simultaneously for >3 seconds, release them,
then press the right button for >3 seconds.
The display shows “P01”.
Continue with step 2.
Enter “Expert level”
and "Diagnostics &
test"
1.
Press left button and right button simultaneously for >3 seconds, release
them, press the left button for >3 seconds, then turn the rotary knob
counterclockwise min. ½ rotation.
The display shows “Pxx”.
Continue with step 2.
Adjust parameters
2.
3.
Select the required parameter by turning the rotary knob.
(OK); the current value of the selected parameter starts
Press button
blinking and can be changed by turning the rotary knob.
(OK) to confirm the adjusted value or press button (Esc) to
Press button
cancel the change.
If you wish to adjust additional parameters, repeat steps 2…4.
Press button (Esc) to leave the parameter setting mode.
4.
5.
6.
Reset parameters
The factory setting for the control parameters can be reloaded via parameter P71,
by changing the value to “ON”. Confirm by pressing the right button.
The display shows “8888” during reloading.
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3.13.2 Parameter setting / download via tool
Control parameters can be adjusted via bus either by parameter download during
commissioning or during normal operation with a tool like ACS700.
With the ACS700 tool, the parameters can be changed…
ACS Service
ACS Operating
OZW772 Web server,
RMZ792 bus operator
unit
ETS3 Professional
Notes:
Connecting a KNX tool
– during commissioning via parameter download (all parameters)
– during normal operation via Popcard (most of the parameters)
Most parameters can be changed during normal operation using the OZW772 web
server or the RMZ792 bus operator unit.
Only the parameters for the device address can be downloaded via ETS3
Professional. This is to simplify and avoid a conflict.
It allows you to further engineer communication objects of an RDG previously
commissioned vial local HMI or ACS (assigning communication objects to group
addresses).
 The basic application can only be changed via parameter download with ACS.
 The RDG KNX thermostats require version ETS3f or higher / ACS700 version
5.11 or higher.
Connecting a KNX commissioning / operating tool to the RDG is described in
section 4.2.
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Parameter
3.13.3 Parameters of the "Service level"
Name
Factory setting
Range
2-pipe:
1 = Cooling only
0 = Heating only
1 = Cooling only
2 = H/C changeover manual
3 = H/C changeover auto
4 = Heating and Cooling
1 = Auto – Protection
2 = Auto - Comfort - Economy Protection
0 = Auto - Manual
1 = Manual
2 = Auto - Manual - Protection
C = ° Celsius
F = ° Fahrenheit
– 3 ... 3 K
0 = Room temperature
1 = Setpoint
0 = --- (No display)
1 = °C and °F
2 = Outside temperature (via bus)
3 = Time of day (12h) (via bus)
4 = Time of day (24h) (via bus)
5 ... 40 °C
5 ... 40 °C
5 ... 40 °C
OFF, 5 ... WCoolEco;
WCoolEco = 40 °C max
OFF, WHeatEco ... 40 °C;
WHeatEco = 5C min
ON: Enabled
OFF: Disabled
0 = Unlocked
1 = Auto lock
2 = Manual lock
Service level
P01
Control sequence
4-pipe:
4 = Heating and Cooling
P02
Operation via room op selector
1
P03
Operation via fan op selector
0
P04
Unit
C (0)
P05
P06
Measured value correction
Standard display
0K
0
P07
Additional display information
0
P08
P09
P10
P11
Comfort basic setpoint
Comfort setpoint minimum
Comfort setpoint maximum
Economy heating setpoint
21 °C
5 °C
35 °C
15 °C
P12
Economy cooling setpoint
30 °C
P13
Electric heater when cooling
ON
P14
Button lock
0
Note:
Parameter display depends on selected application and function.
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Parameter
3.13.4 Parameters of the "Expert level
with diagnostics and test"
Name
Factory setting
Range
0.5 … 6 K
0.5 … 6 K
0.5 … 6 K
0.5 … 5 K
0.5 … 5 K
0…10 min
10…25 °C
27…40 °C
0 = --- (no function)
1 = Room temp ext. sensor /
Return air temp (AI)
2 = H/C changeover (AI/DI)
3 = Operating mode contact (DI)
4 = Dew point sensor (DI)
5 = Enable electric heater (DI)
6 = Fault input (DI)
7 = Monitor input (Digital)
8 = Monitor input (Temp)
0 = Normally open
/ Open
1 = Normally closed / Close
0 = --- (no function)
1 = Room temp ext. sensor /
Return air temp (AI)
2 = H/C changeover (AI/DI)
3 = Operating mode contact (DI)
4 = Dew point sensor (DI)
5 = Enable electric heater (DI)
6 = Fault input (DI)
7 = Monitor input (Digital)
8 = Monitor input (Temp)
0 = Normally open
/ Open
1 = Normally closed / Close
0 = --- (no function)
2 = H/C changeover (DI)
3 = Operating mode contact (DI)
4 = Dew point sensor (DI)
5 = Enable electric heater (DI)
6 = Fault input (DI)
7 = Monitor input (Digital)
0 = Normally open
/ Open
1 = Normally closed / Close
20…300 sec
20…300 sec
0 = 3-position
1 = 2-position
2 = PWM
0 = 3-position
1 = 2-position
2 = PWM
1...20 min
1...20 min
OFF:
Not active
1…5 min: Active with selected
duration
OFF, 10...50 °C
0 = Disabled
1 = Enabled
2 = Heating only
3 = Cooling only
Expert level
P30
P31
P32
P33
P34
P35
P36
P37
P38
Heat P-band Xp / switching diff
Cool P-band Xp / switching diff
Radiator P-band Xp / swi diff
Dead zone Comfort mode
Setpoint differential
Integral action time Tn
H/C ch'over swi point cooling
H/C ch'over swi point heating
Input X1
2K
1K
2K
2K
2K
5 min
16 °C
28 °C
1: = Ext. sensor
P39
Normal position input X1
0 (N.O.)
P40
Input X2
0 = no function
P41
Normal position input X2
0 (N.O.)
P42
Input D1
3 = Op mode contact
P43
Normal position input D1
0 (N.O.)
P44
P45
P46
Actuator running time Y1/Y2
Actuator running time Y3/Y4
Output Y1/Y2
150 s
150 s
ON/OFF (1)
P47
Output Y3/Y4
ON/OFF (1)
P48
P49
P50
On time minimum 2-pos output
Off time minimum 2-pos output
Purge time
1 min.
1 min.
OFF
P51
P52
Flow temp limit floor heating
Fan control
OFF
1
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Parameter
Name
Factory setting
Range
1 = 1-speed
2 = 3-speed
0...360 sec
80...100%
30..75%
1...15%
ON: Enabled
OFF: Disabled
1...6 min
0…89 min, OFF(90)
0…359 min, OFF(360)
Off, 100…9900 h
OFF, 5…WCoolProt;
WCoolProt = 40 °C max
OFF, WHeatProt… 40;
WHeatProt = 5°C min
0...180 s
0...360 min
OFF = Disabled
ON = Enabled
OFF = Disabled
ON = Reload start
“8888” is displayed for 3s during
reload process
Expert level
Fan speeds
3-speed
P54
P55
P56
P57
P58
Fan overrun time
Fan speed switching point high
Fan speed switching point med
Fan speed switching point low
Fan start kick
60 sec
100%
65%
10%
ON
P59
P60
P61
P62
P65
On time minimum fan
Periodic fan kick Comfort
Periodic fan kick Eco
Service filter
Protection heating setpoint
2 min
0
OFF
Off (0)
8 °C
P66
Protection cooling setpoint
OFF
P67
P68
P69
Fan start delay
Temporary Comfort mode
Temporary Comfort setpoint
0s
0 (= OFF)
OFF
P71
Restore factory setting
OFF
Name
Factory setting
Range
255
--1
------0
1…255
---, 1...126
---, 1...63
---, 1...31
---, 1...31
---, 1...31
0 = Economy
1 = Comfort
Parameter
P53
Communications
P81
P82
P83
P84
P85
P86
P88
Note:
1)
2)
Device address 1)
Geographical zone (apartment) 2)
Geographical zone (room) 2)
Heat distr zone heating coil
Refrig distr zone cooling coil
Heat distr zone heating surface
Transformation Precomfort
P46, P47: Setting to 2-position or 3-position is made with DIP switches 4 and 5
Physical address = Area.Line.DeviceAddress. Factory setting of Area = 0, Line = 2.
Can be changed by special management service e.g. from line coupler or via ACS commissioning tool.
Type = geographical zone A.R.S. In RDG sub zone = fixed value 1
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Range
Parameter
Name
Diagnostics & test
d01
Application number
d02
X1 state
d03
X2 state
d04
D1 state
d05
Test mode for checking the Y1/Y2 actuator's running
direction 3)
d06
Test mode for checking the Y3/Y4 actuator's running
direction 3)
d07
Software version
3)
0 = (No application)
1 = 2-pipe
2 = 2-pipe with electric heater
3 = 2-pipe with radiator
4 = 4-pipe
5 = 2-stage heating or cooling
6 = 4-pipe with electric heater
0
= Not activated (for DI)
1
= Activated (DI)
0…49 °C = Current temp. value (for AI)
00
= H/C Input shorted
100
= H/C Input open
0
= Not activated (for DI)
1
= Activated (DI)
0…49 °C = Current temp. value (for AI)
00
= H/C Input shorted
100
= H/C Input open
0
= Not activated (for DI)
1
= Activated (DI)
00
= H/C Input shorted
100
= H/C Input open
"---" = no signal on outputs Y1 and Y2
OPE = output Y1 forced opening
CLO = output Y2 forced closing
"---" = no signal on outputs Y3 and Y4
OPE = output Y3 forced opening
CLO = output Y4 forced closing
Ux.xx is displayed
This parameter can only be quit when the setting is back at “---”.
Press the left button to escape.
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4.
Handling
4.1
Mounting and installation
Do not mount on a wall in niches or bookshelves, behind curtains, above or near
heat sources, or exposed to direct solar radiation. Mount about 1.5 m above the
floor.
Mounting
 Mount the room thermostat in a clean, dry indoor place without direct airflow
from a heating / cooling device, and not exposed to dripping or splash water
Wiring
See Mounting Instructions M3191 [3] enclosed with the thermostat.
 Comply with local regulations to wire, fuse and earth the thermostat
 Properly size the cables to the thermostat, fan and valve actuators for AC 230
V mains voltage
 Use only valve actuators rated for AC 230 V
 The AC 230 V mains supply line must have an external fuse or circuit breaker
with a rated current of no more than 10 A
 Isolate the cables of input D1-GND for 230 V if the conduit box carries
AC 230 V mains voltage
 Inputs X1-M, X2-M or D1-GND: Several switches (e.g. summer / winter switch)
may be connected in parallel. Consider overall maximum contact sensing
current for switch rating
 Inputs X1-M and X2-M carry mains potential.
Sensor cables must be suited for AC 230 V mains voltage
 Isolate the cables of KNX communication input CE+ / CE- for AC 230 V if the
conduit box carries AC 230 V mains voltage
 No cables provided with a metal sheath
 Disconnect from supply before removing from the mounting plate
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4.2
Commissioning
The room thermostats are delivered with a fixed set of applications.
Applications
Select and activate the relevant application during commissioning using one of the
following tools:
– Local DIP switch and HMI
– Synco ACS
– ETS3 Professional
(Parameter and application download with ETS3 will be implemented later)
Set the DIP switches before snapping the thermostat to the mounting plate, if you
want to select an application via DIP switches.
DIP switches
All DIP switches need to be set to “OFF” (remote configuration), if you want to
select an application via commissioning tool.
After power is applied, the thermostat resets and all LCD segments flash, indicating
that the reset was correct. After the reset, which takes about 3 seconds, the
thermostat is ready for commissioning by qualified HVAC staff.
If all DIP switches are OFF, the display reads "NO APPL" to indicate that
application commissioning via a tool is required.
Note:
Each time the application is changed, the thermostat reloads the factory setting for
all control parameters, except for KNX device and zone addresses!
Connect the Synco ACS or ETS3 Professional tools to the KNX bus cable at any
point for commissioning:
Connect tool
KNX
KNX
M
X2
L
X1
N
Q1 Q2 Q3
D1 GND
Y1 Y2
CE+ CEY3 Y4
N1
Siemens
N148 /
UP146 /
UP152
Siemens
OCI700
KNX
USB
V24
ETS
ETS / ACS
3191A03
RS232
ACS and ETS3 require an interface:
– RS232 KNX interface (e.g. Siemens N148 / UP146 / UP152)
– OCI700.1 USB-KNX interface
Note:
An external KNX bus power supply is required if an RDG is connected directly to a
tool (ACS700 or ETS3) via KNX interface.
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Control parameters
The thermostat's control parameters can be set to ensure optimum performance of
the entire system.
The parameters can be adjusted using
– Local HMI
– Synco ACS
– ETS3 Professional
Parameter and application download with ETS3 will be implemented later.
The control parameters of the thermostat can be set to ensure optimum
performance of the entire system (see section 3.13, control parameters).
Control sequence
 The control sequence may need to be set via parameter P01 depending on the
application. The factory setting is as follows:
Application
2-pipe and chilled / heated ceiling, and 2-stage
4-pipe, chilled ceiling and radiator
Factory setting P01
1 = cooling only
4 = heating and cooling
Calibrate sensor
 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 P05
Setpoint and range
limitation
 We recommend to review the setpoints and setpoint ranges (parameters
P08…P12) and change them as needed to achieve maximum comfort and save
energy
Programming mode
The programming mode helps identify the thermostat in the KNX network during
commissioning.
Press left and right buttons simultaneously for 6 seconds to activate
programming mode, which is indicated on the display with "PrOg".
Programming mode remains active until thermostat identification is complete.
Assign KNX group
addresses
Use ETS3 Professional to assign the KNX group addresses of the thermostat's
communication objects.
KNX serial number
Each device has a unique KNX serial number at the rear. An additional sticker with
the same KNX serial number is enclosed in the packaging box. This sticker is
intended for installers for documentation purposes.
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4.3
Operation
See also Operating Instructions B3191 [2] enclosed with the thermostat.
Layout
1
2
1. Operating mode selector / Esc
2. Fan mode selector / Ok
3. Rotary knob to adjust setpoints and
parameters
3
Button operation
User action
Effect, description
Normal operation
Actual operating mode and state are
indicated by symbols
Enter operating mode selection;
backlit LCD turns on, all possible mode
symbols turn on, indicator element (arrow)
will appear on the current mode / state
Change operating mode (indicator element
(arrow) 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
Toggle between heating and cooling
Activate "Extend Comfort mode"
(for details, see page 16)
Press any button
(thermostat in normal operation)
Press left button
Press left button (P01 = 2)
Press left button while "Operating
mode" via bus is Economy or while
operating mode switchover contact is
activated
Keep left button depressed and
turn rotary knob clockwise / counterclockwise
Press right button >3 seconds
Press right button for fan coil unit
Press right button if P52 = 0 (fan disabled, e.g. in chilled ceiling applications)
Turn rotary knob
Press left and right button >3
seconds, release, then press right
button >3 seconds
Press left and right button for 3
seconds, release, press left button for
3 seconds, then turn rotary knob
counterclockwise min. ½ revolution
Press left and right button simultaneously for 6 seconds
Activate timer "Extend presence" / "Extend
absence" and set the time (for details, see
page 16)
Activate / deactivate button lock
Change fan mode
Set thermostat to Protection mode
Adjust the room temperature Comfort
setpoint
Enter parameter setting mode “Service
level”
Enter parameter setting mode “Expert level”,
diagnostics and test
Enter (KNX) programming mode
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Display
#
Symbol
Description
# Symbol Description
1
Heating mode
14
Automatic fan
2
Heating mode,
electric heater active
15
Manual fan
3
Cooling mode
4
Comfort
5
Economy
6
Auto Timer mode according to
schedule (via bus)
17
Degrees Celsius
Degrees Fahrenheit
8
Protection mode
18
Digits for room temperature and setpoint display
9
Escape
19
Button lock
10
Additional user information, like outor time of day
side temperature
from KNX bus. Selectable via
parameters
20
Condensation in room (dew point sensor active)
12
Morning: 12-hour format
Afternoon: 12-hour format
21
Weekday 1…7 from KNX bus
1 = Monday / 7 = Sunday
13
Confirmation of parameters
22
Fault
23
“Temporary timer” function; visible when
operating mode is temporarily extended
(extended presence or absence)
24
Indicates that room temperature is displayed
Fan speed 1
16
Fan speed
Fan speed 2
Fan speed 3
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4.4
Remote operation
The RDG thermostats can be operated from a remote location using a OZW772 /
OZW775 web server, a RMZ792 bus operating unit or the ACS Operating tool.
4.5
Disposal
The device is classified as waste electronic equipment in terms of the European
Directive 2002/96/EC (WEEE) and should not be disposed of as unsorted municipal waste.
The relevant national legal rules must be adhered to.
Regarding disposal, use the systems setup for collecting electronic waste.
Observe all local and applicable laws.
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ETS3 Professional
5.
Supported KNX tools
5.1
ETS3 Professional
ETS3 Professional is an engineering tool. It is used to set up the communication of
the RDG KNX thermostat and assigns the communication object to group
addresses (S-mode).
Parameters are only used for choosing (making visible / hiding) the communication
objects.
This Manual does not describe how to operate ETS3 Professional and commission
a device. Refer to the KNX Manual for more details.
STOP
Setting RDG KNX parameters is only supported by ETS3f or higher.
Note!
5.1.1
Parameter settings in ETS Professional
For setting the parameters, open the project and select a device.
To start the parameter settings, select Edit, then Edit parameters.
Note
 Parameters are only used to choose the communication objects
 The tool required is ETS3 Professional version 3f or higher!
5.2
ACS Service
ACS Operating
ACS700 Service and Operating tool
With the ACS700 tools, the RDG KNX thermostats can be commissioned (physical
address, application, parameters). They can be operated or monitored via bus
during normal operation.
This Manual does not describe how the physical address is defined. Also, it only
gives a brief overview of the main functionality of ACS.
For more information, refer to the ACS online help.
STOP
Note!
Setting RDG KNX parameters is only supported by ACS700 Version 5.11 or
higher.
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5.2.1
Parameter settings in ACS
In the ACS Service program, select Plant, then Open to open the plant.
To start the parameter settings, select Applications, then Parameter settings…:
The application and control parameters can be adjusted and downloaded.
Column Line no. contains the parameter number as shown in the parameter table.
Refer to section 3.13, control parameters.
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5.2.2
ACS Operating
Parameter settings in
ACS Operating
Notes:
Operation and monitoring with ACS
In the ACS Operating program, select Plant, then Open to open the plant.
To start monitoring and operation, select Applications, then Popcard
ACS Operating supports parameter settings even during normal operation.
To change a control parameter, select Popcard, then Settings.
 Make sure you have logged on with sufficient access right
 Only control parameter can be changed, no application!
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Plant diagram in ACS
Operating
ACS Operating offers plant diagrams for easy monitoring and operation of the
thermostat.
To start this application, select Applications, then Pant diagram
ACS provides standard plant diagrams for RDG KNX thermostats, which depend
on the configuration as follows:
Plant type
2-pipe
Application
Configuration
Application
Configuration
2-pipe fan coil unit
– Control sequence: No impact (P01 = any)
– Fan operation: Not disabled (P52 <> 0)
Radiator
– Control sequence: Heating only (P01 = 0)
– Fan operation: Disabled
(P52 = 0)
Chilled / heated ceiling
– Control sequence: Changeover (P01 = 2,3)
– Fan operation: Disabled
(P52 = 0)
Chilled ceiling
– Control sequence: Cooling only (P01 = 1)
– Fan operation: Disabled
(P52 = 0)
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Plant type
Application
Configuration
Application
Configuration
2-pipe and
electric
heater
2-pipe fan coil unit with electric heater
– Control sequence: No impact (P01 = any)
– Fan operation: Not disabled (P52 <> 0)
Single stage with electric heater
– Control sequence: No impact (P01 =any)
– Fan operation: Disabled
(P52 = 0)
2-pipe and
radiator
2-pipe fan coil unit with radiator
– Control sequence: No impact (P01 = any)
– Fan operation: Not disabled (P52 <> 0)
Single stage with radiator
– Control sequence: No impact (P01 =any)
– Fan operation: Not disabled (P52 <> 0)
4-pipe
4-pipe fan coil unit
– Control sequence: Not auto c/o (P01 <> 3)
– Fan operation: Not disabled
(P52 <> 0)
Chilled ceiling with radiator
– Control sequence: No impact (P01 =any)
– Fan operation: Disabled
(P52 = 0)
Fan coil unit main / secondary
– Control sequence: Auto c/o
(P01 = 3)
– Fan operation: Not disabled (P52 <> 0)
Main / secondary
– Control sequence: Auto c/o
– Fan operation: Disabled
2-stage fan coil unit
– Control sequence: No impact (P01 = any)
– Fan operation: Not disabled
(P52 <> 0)
2-stage
– Control sequence: No impact (P01 =any)
– Fan operation: Not disabled
(P52 = 0)
2-stage
heating or
cooling
(P01 = 3)
(P52 = 0)
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Plant type
4-pipe with
el heater
Application
Configuration
Application
Configuration
4-pipe fan coil unit with electric heater
– Control sequence: Not auto c/o (P01 <> 3)
– Fan operation: Not disabled
(P52 <> 0)
1 stage Heat and Cool with electric heater
– Control sequence: No impact (P01 <> 3)
– Fan operation: Disabled
(P52 = 0)
Fan coil unit main / secondary with electric
heater
– Control sequence: Auto c/o
(P01 = 3)
– Fan operation: Not disabled (P52 <> 0)
Main / secondary with el heater
– Control sequence: Auto c/o
– Fan operation: Disabled
(P01 = 3)
(P52 = 0)
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5.2.3
Operation and monitoring with OZW772
The OZW772 web server enables users to operate a Synco HVAC system from a
remote location – via PC or from a smart phone via the web. A start page shows
the most important data points. A combination of menu / path navigation enables
users to access all data points quickly and straightforwardly. The entire installation
can be visualized in the form of plant diagrams. Alarm and state messages can be
forwarded to different message receivers, such as e-mail, SMS, etc.
For details, see Commissioning Instructions CE1C5701.
5.2.4
Operation and monitoring with RMZ972
The RMZ792 is a communicating operator unit
designed for operating Synco™ 700 and RDG
KNX devices in a KNX network.
The operator unit is suited both for fixed
installation and mobile use (e.g. for use by the
service engineer).
Third-party devices cannot be operated with it.
For details, see Basic Documentation CE1P3113.
Note:
The application cannot be displayed in the form of text, instead a number is used:
(Parameter Plant type on menu Basic setting):
0 = no application
1 = 2-pipe
2 = 2-pipe and electric heater
3 = 2-pipe and radiator
4 = 4-pipe
5 = 2-stage
6 = 4-pipe and electric heater
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Connection
6.1
Connection terminals
X1
M
X2
N
Q1 Q2 Q3
Y1 Y2 Y3 Y4
Connection diagrams
L
KNX
S1
F
S2
10 A
AC 230 V
B1
X1
L
M
N Q1 Q2 Q3
 2-pipe
N
M1
S3
B2
I II III
 2-pipe and
radiator
 4-pipe
 2-stage
Operating voltage AC 230 V
Multifunctional input for temperature sensor
(e.g. QAH11.1) or potential-free switch
Factory setting:
– X1 = External temperature sensor
– X2 = No function
(function can be selected via parameters P38 / P40).
M
Measuring neutral for sensors and switches
D1, GND Multifunctional input for potential-free switch
Factory setting: Operating mode switchover contact
(function can be selected via parameter P42).
Q1
Control output fan speed “low” AC 230 V
Q2
Control output fan speed “medium” AC 230 V
Q3
Control output fan speed “high” AC 230 V
Y1…Y4
Control output “Valve” AC 230 V
(NO contact, for normally closed valves),
output for electric heater via external relay
CE+
KNX data +
CEKNX data –
CE+ CE -
D1 GND
6.2
Application
L, N
X1, X2
5(2)A
max.
3191A12
L
SELV
3191A01
6.
X2
CE+ CE-
D1 GND
Y1
Y2
Y3
Y4
N1
Y1
1A
max.
Y1
 2-pipe and
electric heater
Y1
 4-pipe and
electric heater
Y1
Y2
K
E1
Y2
N1
Room thermostat RDG100KN
M1
1- or 3-speed fan
V1, V2 Valve actuators:
ON/OFF or PWM, 3-position,
heating, cooling, radiator, heating / cooling,
1st or 2nd stage
E1
Electric heater
K
Relay
F
External fuse
S1, S2 Switch (keycard, window contact, presence
detector, etc.)
S3
Switch at SELV input
(keycard, window contact)
B1, B2 Temperature sensor (return air temperature, external room temperature,
changeover sensor, etc.)
CE+
KNX data +
CE–
KNX data –
K
E1
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7.
Mechanical design
7.1
General
The room thermostat consists of 2 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.
1
2
1. Operating mode selector / Esc
2. Fan mode selector / Ok
3. Rotary knob to adjust setpoints and
parameters
3
For operation, refer to section 4.3.
7.2
Dimensions
Dimensions in mm
4.0
28.3
28.3
9.0
4.0
128.0
28.3
28.3
28.3
27.7
16.0
93.0
28.5
30.8
28.2 27.8
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8.
Power supply
Outputs
Inputs
KNX bus
Operational data
Technical data
Operating voltage
Frequency
Power consumption
Fan control Q1, Q2, Q3-N
Rating
Control outputs
Y1, Y2, Y3, Y4-N
Multifunctional inputs
X1-M / X2-M
Temperature sensor input
Type
Digital input
Operating action
Contact sensing
Insulation against mains
D1-GND
Operating action
Contact sensing
Insulation against mains
Function of inputs
External temperature sensor, heating/cooling
changeover sensor, operating mode switchover
contact, dew point monitor contact, enable electric
heater contact, fault contact, monitoring input
Interface type
AC 230 V +10/-15%
50/60 Hz
Max. 15 VA / 2 W
AC 230 V
Max. 5(4) A
Solid state (triac)
AC 230 V, max. 1 A
QAH11.1 (NTC)
Selectable (NO/NC)
DC 0…5 V, max. 5 mA
N/A, mains potential
Selectable (NO/NC)
SELV DC 6…15 V, 3…6 mA
3.75 kV, reinforced insulation
Selectable
X1: P38
X2: P40
D1: P42
KNX, TP1-64
(electrically isolated)
Bus current
20 mA
Bus topology: See KNX Manual (see 1.2 “Reference documents”)
Switching differential (adjustable)
Heating mode
(P30) 2 K (0.5…6 K)
Cooling mode
(P31) 1 K (0.5…6 K)
Setpoint setting and setpoint range
Comfort
Economy
Protection
Multifunctional inputs X1 / X2 / D1
Input X1 default value
Input X2 default value
Input D1 default value
Built-in room temperature sensor
Measuring range
Accuracy at 25 °C
Temperature calibration range
Settings and display resolution
Setpoints
Current temperature value displayed
(P08)
(P11-P12)
21 °C (5…40 °C)
15 °C/30 °C (OFF, 5…40 °C)
(P65-P66)
8 °C/OFF (OFF, 5…40 °C)
Selectable (0...8)
(P38) 1 (ext. temperature sensor,
room or return air)
(P40) 0 (no function)
(P42) 3 (operating mode switchover)
0…49 °C
< ± 0.5 K
± 3.0 K
0.5 °C
0.5 °C
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Environmental conditions
Standards and directives
Operation
Climatic conditions
Temperature
Humidity
Transport
Climatic conditions
Temperature
Humidity
Mechanical conditions
Storage
Climatic conditions
Temperature
Humidity
conformity
EMC directive
Low-voltage directive
C-tick conformity to EMC emission standard
Reduction of hazardous substances
Product standards
Automatic electric controls for household and
similar use
Special requirements for temperature-dependent
controls
Electronic control type
General
Home and Building Electronic Systems
Electromagnetic compatibility
Emissions
Immunity
Safety class
Pollution class
Degree of protection of housing
Connection terminals
Housing front color
Weight without / with packaging
IEC 721-3-3
Class 3K5
0 …50 °C
< 95% r.h.
IEC 721-3-2
Class 2K3
 25…60 °C
< 95% r.h.
Class 2M2
IEC 721-3-1
Class 1K3
 25…60 °C
< 95% r.h.
2004/108/EC
2006/95/EC
AS/NZS 61000.6.3: 2007
2002/95/EC
EN 60730–1
EN 60730–2-9
2.B (micro-disconnection on
operation)
EN 50090-2-2
IEC/EN 61000-6-3
IEC/EN 61000-6-2
II as per EN 60730
Normal
IP30 as per EN 60529
Solid wires or stranded wires
with ferrules
1 x 0.4…2.5 mm2
or 2 x 0.4…1.5 mm2
RAL 9003 white
0.377 kg / 0.400kg
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Index
1
1-speed fan ........................................................... 48
3
3-position control signal ........................................ 45
3-speed fan ........................................................... 48
A
Absence ................................................................ 16
Applications overview ........................................... 23
Auto Timer mode................................................... 15
Automatic heating / cooling changeover......... 25, 28
Automatic heating / cooling changeover via bus .. 25
B
Basic application ................................................... 42
Button lock ............................................................ 27
Fan operation in dead zone.................................. 48
Fan overrun .......................................................... 48
Fan start ............................................................... 48
Fan start delay...................................................... 49
Fault...................................................................... 51
Fault on KNX ........................................................ 57
Fault, handling ...................................................... 51
Floor cooling ......................................................... 26
Floor heating......................................................... 26
Floor temperature limitation function .................... 26
H
Heating / cooling changeover......................... 25, 50
Heating and cooling sequence ............................. 28
Heating demand ................................................... 56
Heating sequence................................................. 28
I
Integral action time ............................................... 12
C
Changeover switch ............................................... 25
Chilled / heated ceiling applications ..................... 42
Clean fan filter reminder ....................................... 49
Control outputs configuration................................ 46
Control outputs overview ...................................... 45
Control parameters ............................................... 61
Control sequences................................................ 28
Cooling demand.................................................... 56
Cooling sequence ................................................. 28
M
Main and secondary ............................................. 36
Manual heating / cooling changeover .................. 25
Manually select heating or cooling sequence ...... 28
Minimum output .................................................... 26
Moisture................................................................ 26
Mounting and installation...................................... 67
Multifunctional inputs ............................................ 50
D
Dew point monitoring ...................................... 27, 50
Digital input ........................................................... 50
Disposal ................................................................ 72
O
ON/OFF control signal.......................................... 45
Operating mode
Priority intervention ........................................... 14
Operating mode button......................................... 15
Operating mode switchover.................................. 50
E
Effect of Protection via time schedule................... 15
Electric heater ....................................................... 32
Enable / disable electric heater................. 32, 38, 50
Expert level parameters ........................................ 61
Extension of Comfort mode .................................. 16
Extension of presence / absence.......................... 16
External / return air temperature........................... 50
External / return air temperature sensor............... 25
F
Fan in Auto Timer mode........................................ 49
Fan kick function ................................................... 48
Fan minimum on-time ........................................... 48
Fan operation as per heating / cooling mode, or
disabled ............................................................. 48
P
Parameter setting ................................................. 61
Precomfort ............................................................ 15
Presence .............................................................. 16
Proportional band ................................................. 12
Protection mode / Standby ................................... 13
Purge function ...................................................... 26
PWM..................................................................... 45
PWM for electric heater........................................ 46
R
Radiator ................................................................ 34
Radiator applications............................................ 42
Remote heating / cooling changeover................. 25
Reset parameters ................................................. 61
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S
Sensor input.......................................................... 50
Service level parameters ...................................... 61
Setpoint Comfort mode......................................... 43
Setpoint Economy mode ...................................... 43
Setpoint limitation ................................................. 20
Setpoint Protection mode ..................................... 43
Setpoints and sequences ..................................... 43
Standby / Protection mode ................................... 13
Switching differential............................................. 12
Synchronization .................................................... 45
T
Temperature out of range......................................51
Temporary setpoint................................................20
Time schedule change mode ................................15
U
Universal applications ...........................................23
W
Window contact ....................................................15
Window state............................................ 13, 14, 50
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Siemens Switzerland Ltd
Industry Sector
Building Technologies Division
International Headquarters
Gubelstrasse 22
CH-6301 Zug
Tel. +41 41-724 24 24
Fax +41 41-724 35 22
www.buildingtechnologies.siemens.com
© 2010 Siemens Switzerland Ltd
Subject to change
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