Siemens RDG400KN, RGD405KN Basic Documentation

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Siemens RDG400KN,RGD405KN Basic documentation CE1P3192en Building Technologies 2017-02-17

Room thermostats with KNX communications RDG400KN,RGD405KN

Basic Documentation

Edition: 3.1

CE1P3192en 2017-02-17

Building Technologies

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Contents

1. About this document ........................................................................... 4

1.1 Revision history ..................................................................................... 4

1.2 Reference documents ............................................................................ 4

1.3 How to find RDG400KN/RDG405KN applications in HIT ........................ 5

1.4 Before you start ..................................................................................... 5

1.4.1 Copyright ............................................................................................... 5

1.4.2 Quality assurance .................................................................................. 5

1.4.3 Document use/request to the reader ...................................................... 5

1.5 Target audience, prerequisites ............................................................... 6

1.6 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 ......................................................................................... 12

3. Functions ........................................................................................... 13

3.1 Temperature and IAQ control (RDG405KN only) .................................. 13

3.1.1 Temperature control ............................................................................. 13

3.1.2 IAQ control (RDG405KN only) ............................................................. 14

3.2 Operating modes ................................................................................. 16

3.2.1 Different ways to influence the operating mode .................................... 18

3.2.2 Communication examples .................................................................... 21

3.3 Room temperature setpoints ................................................................ 25

3.3.1 Description .......................................................................................... 25

3.3.2 Setting and readjusting setpoints ......................................................... 27

3.4 Applications overview .......................................................................... 29

3.4.1 Applications with supply and extract air ................................................ 30

3.5 Additional functions .............................................................................. 31

3.6 Control sequences ............................................................................... 33

3.6.1 Sequences overview (setting via P01) .................................................. 33

3.6.2 Hysteresis: Behavior of heating and cooling ......................................... 34

3.6.3 Application mode ................................................................................. 35

3.6.4 Minimum and maximum air volume ...................................................... 36

3.6.5 Single-duct applications ....................................................................... 37

3.6.6 Single-duct applications with electric heater ......................................... 38

3.6.7 Single-duct applications with radiator or floor heating ........................... 41

3.6.8 Single-duct applications with heating/cooling coil ................................. 43

3.6.9 Setpoints and sequences ..................................................................... 45

3.6.10 Applications with external AQR sensor or QMX room operator unit

(RDG405KN) ....................................................................................... 46

3.7 Control outputs .................................................................................... 47

3.7.1 Overview ............................................................................................. 47

3.7.2 Control output for air flow ..................................................................... 47

3.7.3 Control output for electric heater, radiator and heating/ cooling coil ...... 48

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3.7.4 Control outputs configuration (setting via DIP switches 4 and 5 or tool,

and P46…P47) .................................................................................... 50

3.8 Multifunctional input, digital input .......................................................... 51

3.9 Handling f aults ..................................................................................... 53

3.10 KNX communications ........................................................................... 53

3.10.1 S-Mode ................................................................................................ 53

3.10.2 LTE-Mode ............................................................................................ 53

3.10.3 Zone addressing in LTE-Mode (in connection with Synco) .................... 55

3.10.4 Example of heating and cooling demand zone ..................................... 56

3.10.5 Send heartbeat and receive timeout ..................................................... 57

3.10.6 Startup ................................................................................................. 57

3.10.7 Heating and cooling demand ................................................................ 58

3.10.8 Air demand .......................................................................................... 58

3.10.9 Electric heater interlock by supply air controller (LTE-Mode only)......... 58

3.10.10 Primary fan overrun after switching off the electric heater ..................... 59

3.10.11 Fault function on KNX .......................................................................... 59

3.10.12 Emergency control (LTE-Mode only) .................................................... 60

3.10.13 Application with VAV compact controller (KNX LTE-Mode only) ............ 60

3. 11 Communication objects (S-Mode) ........................................................ 61

3.11.1 Overview ............................................................................................. 61

3.11.2 Description of communication objects .................................................. 62

3.12 Communication objects (LTE-Mode) .................................................... 64

3.13 Control parameters .............................................................................. 65

3.13.1 Parameter setting via local HMI............................................................ 65

3.13.2 Parameter setting/download via tool ..................................................... 66

3.13.3 Parameters of the Service level............................................................ 67

3.13.4 Parameters of the Expert level with diagnostics and test ...................... 68

4. Handling ............................................................................................. 70

4.1 Mounting and installation ..................................................................... 70

4.2 Commissioning .................................................................................... 71

4.3 Operation............................................................................................. 73

4.4 Remote operation ................................................................................ 75

4.5 Disposal .............................................................................................. 75

5. Supported KNX tools ......................................................................... 75

5.1 ETS ..................................................................................................... 75

5.1.1 Parameter settings in ETS ................................................................... 75

5.2 ACS790 ............................................................................................... 76

5.2.1 Parameter settings in ACS ................................................................... 76

5.2.2 Operation and monitoring with ACS...................................................... 77

5.2.3 Operation and monitoring with OZW772 ............................................... 81

6. Connection ......................................................................................... 81

6.1 Connection terminals ........................................................................... 81

6.2 Connection diagrams ........................................................................... 82

7. Mechanical design ............................................................................. 82

7.1 General ............................................................................................... 82

7.2 Dimensions .......................................................................................... 83

8. Technical data .................................................................................... 84

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1. About this document

1.1 Revision history

Edition Date Changes Section Pages

3.1 Feb. 2017 ∂ Update “Heartbeat” 3.10.5 57

3.0 Dec. 2015 ∂ New features for new product RDG405KN: IAQ function

Various

2.0 Dec. 2011 ∂ Amendments for new software V1.24

∂ Various corrections

Various

1.0 July 16, 2010 First edition All

1.2 Reference documents

Subject Ref Doc No. Description

Room thermostats with KNX communications, RDG405KN

[18] N3192 Data Sheet [19] A6V10733816 Operating Instructions

[20] A6V10733804 Mounting Instructions Room thermostats with KNX communications, RDG400KN

[1] CE1N3192 Data Sheet

[2] CE1B3192 Operating Instructions

[3] CE1M3192 Mounting Instructions KNX Manual [4] Handbook for Home and Building Control – Basic Principles

(www.knx.org/uk/news-press/publications/publications/)

Synco and KNX (see

www.siemens.com/synco

)

[5] CE1N3127 KNX bus, Data Sheet

[6] CE1P3127 Communication via the KNX bus for Synco 700, 900 and

RXB/RXL, Basic Documentation

[7] XLS template

in HIT

Planning and commissioning protocol,

communication Synco 700 [8] CE1N3121 RMB795 central control unit, Data Sheet [9] CE1Y3110 KNX S-Mode data points [10] -- Product data for ETS [11] CE1J3110 ETS product data compatibility list [12] 0-92168en Synco Application Manual

Desigo engineering documents

[13] CM1Y9775 Desigo RXB integration – S-Mode [14] CM1Y9776 Desigo RXB/RXL integration – Individual Addressing [15] CM1Y9777 Third-party integration [16] CM1Y9778 Synco integration [17] CM1Y9779 Working with ETS

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1.3 How to find RDG400KN/RDG405KN applications in HIT

Select Applications > Individual rooms and set the search criteria as follows:

∂ Air Treatment: Type "Variable Air Volume" ∂ Preferred controller: Range "RDG / RDF"

1.4 Before you start

1.4.1 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.

1.4.2 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.

1.4.3 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

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Siemens assumes no liability to the extent allowed under the law for any losses resulting from a failure to comply with the aforementioned points or for the improper compliance of the same.

1.5 Target audience, prerequisites

This document assumes that users of the RDG..KNX room thermostats are familiar with the ETS and/or Synco ACS tools and are 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, refer to section 1.2.

1.6 Glossary

The inputs, outputs and parameters of an application can be influenced in various ways. These are identified by the following symbols in this document:

Parameters identified by this symbol are set using the ETS tool.

Parameters identified by this symbol are set using the ACS tool.

Setting RDG..KNX parameters is only supported by the following tool versions:

– ETS4 or higher – ACS790

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 room 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 3.12.

ETS

ACS

STOP

Note

KNX

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2. Summary

2.1 Types

Type Features

Operating voltage

Number of control outputs

Backlit LCD

On/Off PWM 3-pos

0…10 V

VAV

control via

KNX

LTE-Mode

IAQ

RDG400KN

AC 24 V 1



--- 

RDG405KN

AC 24 V 1



 

1) Selectable: On/Off, PWM or 3-position (triac outputs)

2.2 Ordering

Order valve actuators separately.

2.3 Functions

VAV systems via On/Off or modulating control outputs or KNX LTE-Mode:

∂ Single-duct system ∂ Single-duct system with electric heater ∂ Single-duct system and radiator/floor heating ∂ Single-duct system with heating/cooling coil

The room thermostats are delivered with a fixed set of applications. The required application is selected and activated during commissioning using one of the following tools:

∂ Synco ACS ∂ ETS ∂ Local DIP switch and HMI

∂ Operating modes: Comfort, Economy (energy saving) and Protection ∂ Output for VAV box/air damper/VAV compact controller: DC 0…10 V/3-position

(triac)/KNX LTE-Mode

∂ Output for heating/cooling coil: On/Off, PWM or 3-position (triac)/DC 0...10 V ∂ Output signal inversion as an option (DC 0...10 V ⇓ DC 10...0 V) ∂ Automatic or manual heating/cooling changeover ∂ Backlit LCD ∂ AC 24 V operating voltage ∂ Indoor air quality (IAQ) control loop with external CO2 /VOC sensor (DC 0...10 V

or KNX LTE- and S-Mode)

∂ Window contact (RDG405KN) ∂ Presence detector (RDG405KN)

∂ Receive temperature via bus (RDG405KN)

∂ Selectable DC input (RDG405KN)

Product No. Stock No. Description

RDG400KN S55770-T165 Room thermostat RDG405KN S55770-T348 Room thermostat

Use

Features

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∂ Room temperature control via built-in sensor or external room

temperature/return air temperature sensor or KNX room temperature sensor

∂ IAQ control via external CO2/VOC sensor on the DC 0…10 V inputs KNX (LTE-

or S-Mode)

∂ Changeover between heating and cooling mode (automatically via local sensor

or bus, or manually)

∂ Selection of applications via DIP switches or commissioning tool (ACS790). ∂ Selection of operating mode via operating mode button on the thermostat ∂ Temporary Comfort mode extension ∂ Display of current room temperature or setpoint in °C and/or °F ∂ Display of CO2 external sensor value in ppm or with symbols (+++; ++-; +--)

(RDG405KN)

∂ Display of outside temperature or time of day via KNX bus ∂ Minimum and maximum limitation of room temperature setpoint ∂ Minimum and maximum limitation of air flow signal DC 0...10 V/3-position ∂ External CO2 sensor DC 0…10 V; 0…2000 ppm (RDG405KN) ∂ External CO2 sensor, KNX; 0…5000 ppm (RDG405KN) ∂ Button lock (automatic or manual) ∂ 2 multifunctional inputs, freely selectable for:

– Operating mode switchover contact (keycard, window contact, etc.)

(RDG400KN) – Window contact switching operating mode to Protection (RDG405KN) – Presence detector switching operating mode to Comfort (RDG405KN) – Sensor for automatic heating/cooling changeov er – External room temperature or return air temperature sensor – Dewpoint sensor – Electric heater enable – Fault input

∂ Interworking with AQR and QMX sensor for IAQ and room temperature

acquisition (RDG405KN)

∂ 1 multifunctional active DC input (RDG405KN), freely selectable for:

- External IAQ sensor (CO2, VOC)

- Air damper position feedback (optimization of supply air fan’s operation)

∂ Monitoring input for temperature sensor or switch state ∂ Feedback of air damper position via KNX bus or a DC 0...10V input for

optimization of pressure control

∂ Floor heating temperature limitation ∂ Reloading factory settings for commissioning and control parameters

Functions

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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 (ETS)

∂ Integration into Desigo via group addressing (ETS) or individual addressing

∂ Integration into third-party systems via group addressing (ETS)

The following KNX functions are available:

∂ Central time program and setpoints, e.g. when using the RMB795 central control

unit

∂ Outside temperature or time of day via bus displayed on the thermostat

∂ Remote operation and monitoring

∂ 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/cooling demand, air damper position)

∂ Alarming, e.g. external fault contact, condensation, etc. ∂ Monitoring input for temperature sensor or switch

Engineering and commissioning can be performed using …

– the local DIP switches/HMI – the Synco ACS tool – the ETS

The RDG.. room thermostats are especially tailored for integration into the Synco 700 system and operate together in KNX LTE-Mode. This extends the field of use of Synco for individual room control in connection with fan coil units, VAV, chilled ceilings and radiators.

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 ETS engineering tool is required.

Synco 700

Synco living

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Synco 700 Building automation and control system (BACS) Synco living Room automation and control system RDG.., RDF.., RDU.. Room thermostats OZW772 (or OZW775) Web server QAW.. Room unit ACS tool Service tool using OCI702 (OCI702) is delivered with a

service cable which can be plugged into the service

connector on a Synco controller) RXB, RXL Room controllers QAX Room unit for RXB/RXL room controllers G..B181..1E/KN VAV compact controller for KNX LTE-Mode

The RDG..KNX devices can be integrated into the Siemens building automation and control systems (BACS) Desigo or 3rd-party systems. For integration, either SMode (group addressing) or individual addressing can be used. The workflow for integration into Desigo is the same as with standard KNX devices.

Synco topology

Legend:

Desigo and third-party systems

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2.5 Equipment combinations

Type of unit Product No.

Data

Sheet

Cable temperature sensor

QAH11.1

1840

Room temperature sensor

QAA32

1747

Condensation monitor

QXA21..

A6V10741072

Flush-mount KNX room sensor (base and front module)

AQR2576N... AQR2530NNW AQR2532NNW AQR2535NNW

AQR2535NNWQ

1411

Wall-mounted KNX sensors QMX3.P30

QMX3.P70

1602

Electric actuator, DC 0...10 V (for radiator valve)

SSA61..

4893

Electric actuator, DC 0…10 V (for 2 and 3 port valves/V..P45)

SSC61..

4895

Electric actuator, DC 0..10 V (for small valve 2,5 mm V..P47)

SSP61..

4864

Electric actuator, DC 0..10 V (for small valves 5.5 mm V..P45)

SSB61..

4891

Electric actuator, DC 0..10 V (for Combi-valve VPI46)

SSA61..

4893

Electromotoric actuator, DC 0...10 V (for valves 5.5 mm)

SAS61..

4581

Thermal actuator, DC 0…10 V (for small vlves and radiator valves)

STP63

4884

Damper actuators DC 0…10 V and 3-position

GQD161.. GQD131..

4605

GDB161.. GDB131..

4634

GLB161..

GLB131.. GMA161.. GMA131..

4614

GEB161..

GEB131..

4621

GCA161..

GCA131..

4613

GBB161..

GBB131..

4626

GIB161.. GIB131..

VAV compact controller

GDB181.1E/3

3544

GLB181.1E/3

Valve actuators DC 0...10 V

Damper actuators DC 0...10 V and 3-position, VAV compact controllers

Sensors

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VAV compact controller for KNX LTE-Mode

GDB181.1E/KN

3547

GLB181.1E/KN

Electromotoric On/Off valve and actuator

(only available in AP, UAE, SA and IN)

MVI../MXI..

4867

Electromotoric On/Off actuator

SFA71..

4863

Thermal actuator (for radiator valves)

STA73..

4884

Thermal actuator (for small valves 2.5 mm)

STP73..

4884

Electric actuator, 3-position (for radiator valves)

SSA81..

4893

Electric actuator, 3-position (for small valves 2.5 mm V..P47)

SSP81..

4864

Electric actuator, 3-position (for small valves 5.5 mm V..P45)

SSB81..

4891

Electric actuator, 3-position (for CombiValves VPI46)

SSA81..

4893

Electromotoric actuator, 3-position (for valves 5.5 mm)

SAS81..

4581

* W ith PWM control, it is n ot possible to ensure exact parallel running of more than one thermal actuator. If several

actuators are controlled by the same room thermostat, preference should be given to motorized actuators with On/Off or 3-position c ontrol

For more information about parallel operation and the maximum number of actuators that can be used, refer to the Data Sheets of the selected type of actuator and the following listing:

Maximum number of actuators in parallel operation with RDG400KN and RDG405KN:

∂ 6 actuators S..81 (3-position) ∂ 4 actuators ST..73 (On/Off) ∂ 4 actuators SFA.., MVI.., MXI.. (On/Off) ∂ 10 damper actuators G..16.. DC ∂ 6 damper actuators G..13.. (3-position)

2.6 Accessories

Description

Product No/

Stock No.

Data

Sheet

KNX power supply unit 160 mA (Siemens BT LV)

5WG1 125-1AB02

KNX power supply unit 320 mA (Siemens BT LV)

5WG1 125-1AB12

KNX power supply unit 640 mA (Siemens BT LV)

5WG1 125-1AB22

VAV compact controller KNX LTE-Mode

On/Off/PWM valve actuators AC 24 V*

3-position valve

actuators

AC 24 V

Note

On/Off valve actuators AC 24 V

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3. Functions

3.1 Temperature and IAQ control (RDG405KN only)

3.1.1 Temperature control

Setting of the control parameters (P01, etc., mentioned throughout the document) is described in section 3.12.

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 the heating and/or cooling equipment. The following control outputs are available:

∂ VAV box/air damper:

Modulating PI/P control with DC 0...10 V/3-position/KNX LTE-Mode

∂ Heating/cooling coil, radiator, electric heater:

Modulating PI/P control with 3-position/PWM/DC 0...10 V/On/Off control (2-position)

The switching differential or proportional band is 2 K for heating mode and 1 K for cooling mode (adjustable via P30 and P31). The integral action time for modulating PI control is 5 minutes for the RDG400KN and 45 minutes for the RDG405KN (adjustable via P35).

The display shows the acquired room temperature or the Comfort setpoint, selectable via P06. The factory setting displays the current room temperature. P04 is used to display the room temperature or setpoint in °F rather than °C as needed. The acquired room temperature (built-in 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 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 its neutral zone.

Symbols / indicate that the system currently heats or cools (heating or cooling output activated)

Concurrent display of the current temperature or setpoint in °C and °F (P07 = 1) is possible on the thermostat.

The outside temperature can be displayed on the room thermostat by setting P07 = 2. This temperature value has only informative character. In LTE-Mode, the outside temperature can only be received on outside temperature zone 31.

Time of day via bus can be displayed on the room thermostat by setting P07 = 3 or 4. The display is either in 12- or 24-hour format. The information can be received from a Synco controller with time master

General note: Parameters

Temperature control

Display

KNX

Room temperature

Concurrent display of °C and °F

KNX

Outside temperature via bus

KNX

Time of day via bus

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functionality or any other KNX device if the corresponding communication object is bound.

When engineering with the ETS tool, the time of day can only be displayed on the RDG400KN when Synco group address 30/3/254 is loaded into the thermostat. For further details, refer to Basic Documentation [6], "Communication via KNX-bus for Synco 700", section "Engineering of big systems with ETS".

3.1.2 IAQ control (RDG405KN only)

The IAQ function is used for air quality control on VAV applications. The function is achieved by controlling the air damper position according to the CO2 level of the indoor air as well as the temperature. Note that the air damper position is also controlled according to the temperature. It depends on which is higher, the temperature demand or the CO2 level demand signal.

The function shall improve the indoor air quality by increasing the volumetric air flow or VAV output signal respectively.

∂ If the IAQ value of the room is below the preset CO2 setpoint, the VAV

output signal is controlled in accordance with minimum flow

∂ If the IAQ value exceeds the CO2 setpoint, the VAV output signal is

increased slowly until maximum flow is reached

∂ CO2 control is activated in Comfort mode only.

In Economy and Protection mode, this function is disabled

Vmax is reached, when the IAQ value exceeds the preset CO2 setpoint plus the CO2 proportional band (SP+Xp).

Sp: CO2setpoint [P19] Xp: CO

proportional

band [P20]

Vmin: Minimum flow Vmax: Maximum flow

Parameter Object Description Values

Factory

setting

P19 CO2 (VOC) setpoint CO2 (VOC) setpoint OFF(0)…5000 ppm 1000

P20 CO2 (VOC) P-band Xp

Proportional band between Vmin and Vmax

10…2000 ppm 400

Note

General note

Notes

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∂ P19 can be set up to 5000 ppm but the external analog sensor is limited to

2000 ppm. If there is a need to measure above 2000 ppm, a KNX sensor is required to send the value with the respective object

∂ P19 = OFF switches the IAQ function off ∂ The IAQ value is acquired either via a locally connected CO2 or VOC

sensor or a CO2 value via bus (e.g. KNX)

Important note for KNX LTE:

IAQ control does not influence in any way the energy demand air, heating or cooling (in LTE-Mode).

IAQ control – priority CO2 control

∂ If the local CO2 sensor input is configured, the thermostat uses the CO

value from the locally connected sensor. Otherwise, the CO2 value available on KNX is used for CO2 control

∂ In case the local CO2 sensor is configured, but the value is not valid (value

<100 ppm), the thermostat uses the CO2 value via KNX bus. If both CO2 sources do not deliver a valid value, the CO2 function is disabled

∂ S-Mode has a higher priority than LTE-Mode ∂ If the CO2 value comes from the bus, the local (DC 0…10 V) value is not

sent on the bus

∂ Receiving and sending the same S-Mode object is not allowed ∂ The thermostat receives the CO2 LTE object when the corresponding

geographical zone is selected

The "Fresh air" symbol appears on the screen as soon as the actual CO

value exceeds the CO2 setpoint.

The IAQ level can be shown on the LCD. 3 choices are available:

∂ P07 = 0 No display ∂ P07 = 6 CO2 concentration shown as ppm ∂ P07 = 7 CO2 concentration shown in the form of symbols

Selection P07 = 6: CO2 concentration in ppm

The CO2 concentration is shown on the second line with the ppm symbol.

Minimum display: 100 ppm Maximum display: 5000 ppm

Display: IAQ function

Parameter

Name

Factory setting

Range

P07 Additional display

information

0 (RDG405KN only) 0 = --- (no display)

1 = °C and °F 2 = outside temperature (via bus) 3 = time of day (12 h) (via bus) 4 = time of day (24 h) (via bus) 6 = CO2 concentration [ppm] 7 = CO2 symbols

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Selection P07 = 7: CO2 symbols

The CO2 concentration is shown on the second line with "+++, ++-, +--". This parameter can be useful when a VOC sensor is installed.

GOOD: Current CO2 concentration is below the CO2setpoint

OKAY

: Current CO2 concentration is within the CO2 Xp

(proportional band)

POOR

: Current CO2 concentration is above the CO2

setpoint + Xp (proportional band)

When the thermostat is programmed with a CO2 display (ppm or symbols) and no values are available (no sensor on U1 or no value on KNX), or when the value received is below 100 ppm, the thermostat displays "---"

IAQ control using a VOC sensor

The VOC sensor can only be connected to the local analog input U1.

Since the thermostat does not distinguish between CO2 or VOC sensor, the IAQ function and the thermostat’s behavior are the same as for applications with a CO

sensor.

For this application, we suggest to keep the default values of setpoint [P19] and proportional band [P20]. Later, based on the occupant’s feeling, these parameters can be readjusted for optimum room comfort.

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.

The thermostat sends the effective room operating mode on the bus.

The following operating modes are available:

In Auto Timer mode, the room operating mode is commanded via bus. Auto Timer mode is replaced by Comfort mode when no time schedule via bus is present.

In Comfort mode, the thermostat maintains the Comfort setpoint. This setpoint can be defined via P8, P9 and P10. It can be locally adjusted via the rotary knob or the bus.

The thermostat switches to Comfort mode when the presence detector (local or via KNX) is active (room occupied).*)

The setpoints (less heating and cooling than in Comfort mode) can be defined via P11 and P12. The thermostat switches to Economy mode when ... – the operating mode button is pressed (only possible if P02 = 2), – Economy is sent via bus,

KNX

Room operating mode: State

Auto Timer

Comfort

Economy

KNX presence detector (RDG405KN)

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– an operating mode switchover contact (e.g. keycard contact, presence detector,

window contact) is active (for RDG400KN); the contact can be connected to digital input D1 or multifunctional input X1; set P38/P42 to 3 (P02 is irrelevant) *) (for RDG400KN)

– "Window state" is sent via bus, e.g. from a KNX switch or a KNX presence

detector (P02 is irrelevant) *) (for RDG400KN)

*) Operating mode switchover: O nly one input source must be used, either local input X1-D1or the

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 from the time schedule via bus (e.g. from RMB795). and are displayed.

The thermostat switches to Protection mode when … – the operating mode button is pressed, – Protection mode is sent via bus, – the window contact on the RDG405KN is active (open window), – "Window state" is sent to the RDG405KN via bus (e.g. from a KNX switch) *)

*) For details r egarding the operating mode switchover contact (RD G40..KN), window contact

(RDG405KN) and presence detector (RDG405KN), refer to section 3.2.1.

KNX

Room operating mode: Window state (RDG400KN)

Note

Protection

Note

KNX room operating mode: Window state

(RDG405KN)

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3.2.1 Different ways to influence the operating mode

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 ACS tool, or OZW772 web server.

Source

Description

Value of DP "Cause"

Local operation via left button

∂

Operating mode is not Auto Timer

∂ No time schedule via bus

Room operating mode selector (preselection)

∂

Temporary Comfort extension is active

"Timer" function

∂

Operating mode switchover contact (RDG400KN)

Room operating mode contact

∂

Window contact (RDG405KN)

Window switch

∂

Presence detector (RDG405KN)

Presence detector

Bus command

KNX

Room operating mode

∂

Window state sent via bus (RDG400KN)

Room operating mode contact

∂

Window state sent via bus (RDG405KN)

Window switch

∂

Presence detector sent via bus (RDG405KN)

Presence detector

∂

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

Time switch

The following table shows the priorities of different interventions. Lower number means higher priority.

Priority

Description

Remark

•

Commissioning 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 from time schedule

Protection mode sent by a time schedule has priority 2. It cannot be overridden by the user nor by an operating mode switchover contact.

Operating mode switchover contact (RDG400KN)

If the contact is closed, the operating mode changes to Economy. This overrides the operating mode on the thermostat.

Window contact (RDG405KN)

If the contact is closed, the operating mode changes to Protection. 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 (RDG400KN) or local window contact (RDG405KN). Note: Only one input source must be used, either the local input X1-D1 or the KNX bus.

„

Operating mode button The user can change 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 mode was sent via bus, – extended Comfort mode period >0 (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.

„

Presence detector (RDG405KN)

If the contact is closed (room occupied), the operating mode changes to Comfort. This overrides the operating mode on the thermostat. An open contact (room unoccupied) sets the thermostat back to the previous operating mode.

„

Presence detector via bus (RDG405KN)

"Presence detector" sent via bus has the same effect as the local presence detector.

Note:

Only one input source must be used,

either

the

local

input

X1-D1or the KNX bus.

Source for change of operating mode

ACS

Priority of operating mode interventions

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If a time schedule via bus is present (e.g. from the central control unit), Auto Timer mode is active. In that case, the thermostat changes automatically between

Comfort and Economy mode 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, another operating mode can be selected.

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 ensure that the room temperature is maintained according to the time schedule.

If the time schedule sends Precomfort mode, this mode changes either to Economy (factory setting) or Comfort (selectable via P88).

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 blinks on the display when the user presses a button.

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 P02 (factory setting is P02 = 1).

P02 Without time

schedule

With time schedule via bus

Description

1 ⇓

⇓

∂ 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, Comfort mode can

be temporarily extended (see below)

2 ⇓⇓

⇓ ⇓⇓

∂ Switching manually between 3 modes ∂ Suited for homes and rooms where manual switching to

Economy mode is desired

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). Set P42 (P38) to 3.

If the operating mode switchover contact is active, pressing the left button will show OFF (blinking).

The thermostat is forced into Protection mode when the window is open. The contact can be connected to multifunctional input X1 or digital input D1. Set P38 or P42 to 3. User operations are ineffective and OFF displays if the window contact is active.

The function is also available via the KNX signal "Window state", e.g. from a KNX switch or a KNX presence detector.

Note: Only one input source must be used, either local input X1-D1or the 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.

Behavior when bus sends new operating mode

Precomfort via bus

Behavior when bus sends Protection

Availability of Economy mode

Operating mode switchover contact (window contact) (RDG400KN)

Window contact (RDG405KN)

KNX

Room operating mode: Window state

Auto Timer mode with time schedule via bus

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The operating mode can be changed to Comfort or Economy based on room occupancy (room occupied or unoccupied, via presence detector or keycard).

Time schedule via bus

Presence detector behavior

Comfort mode

∂

Whenever the presence detector is activated or deactivated,

Comfort mode is maintained

Economy mode

∂

Whenever the presence detector is activated, the operating

mode changes to Comfort

∂ Whenever the presence detector is deactivated, the

operating mode changes to Economy (with Auto mode)

Protection mode

∂

Presence detector has no impact on the operating mode

Not available

∂

Whenever the presence detector is activated, the operating

mode changes to Comfort

∂ Whenever the presence detector is deactivated, the

operating mode changes to Economy

∂ When the time switch changes to Economy, but the presence detector is still

active, Comfort mode is maintained until the presence detector becomes inactive

∂ The contact (e.g. a card reader) can be connected to multifunctional input X1

or digital input D1 (set P38 or P42 to 10) or the occupancy is sent via bus from a KNX presence detector (only one input source must be used, either local input X1-D1 or the KNX bus)

Comfort mode can be temporarily extended (e.g. working after business hours or on weekends) when the thermostat is commanded to Economy mode by a central time switch, operating mode switchover via KNX or via local input X1-D1. The operating mode button switches the operating mode back to Comfort for the period preset via P68. Press the operating mode button again to stop the timer.

The following conditions must be fulfilled: ∂ Mode selection via operating mode button is set to "Protection-Auto" (P02 = 1)

and P68 (extend Comfort period) is greater than 0

∂ The time schedule via bus is Economy or operating mode switchover is active

During the temporary Comfort mode extension, symbol appears.

If P68 (extend Comfort period) = 0, extended Comfort cannot be activated; pressing the left button switches the thermostat to Protection mode.

The effective room operating mode can be forced temporarily into Comfort or Economy/Protection mode. The time period is adjusted via the rotary knob:

∂ 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 appears ∂ Extend absence: 0:00…–9:30 in steps of 30 minutes; symbol or appears

During the extended presence/absence period, the sandglass symbol appears.

KNX

Presence detector (RDG405KN)

Notes

Temporary timer to extend Comfort mode

Timer for extension of presence/absence

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Function if no time schedule is received via bus

User profile for operating mode

(selected via P02)

Operating mode when activating function

Function Operating

mode during function

Operating mode at the end of function

P02 = 1:

Comfort Extension Comfort Protection Comfort Absence Protection Comfort

P02 = 2:

Comfort or Economy Extension Comfort Economy Comfort or Economy Absence Economy Comfort

Extension/absence functions are not available in Protection mode.

Function with time schedule via bus

User profile for operating mode

(selected via P02)

Operating mode when activating function

Function Operating

mode during function

Operating mode at the end of function

P02 = 1:

Auto or Comfort Extension Comfort Auto Auto or Comfort Absence Protection Auto

P02 = 2 ⇓

Auto, Comfort or Economy Extension Comfort Auto Auto, Comfort or Economy Absence Economy Auto

Extension/absence functions are not available in Protection mode.

3.2.2 Communication examples

The following examples show 2 typical applications of a central time schedule in connection 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 (P88) for Precomfort via bus is set on the thermostat as follows: – Room 1: Comfort (1) – Room 2: Economy (0)

Note

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Operating mode switchover

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. Comfort mode is maintained as set via parameter "Transformation Precomfort" (P88 = 1).

Time schedule

Window contact

Room 1

Effective room operating mode

Room 1

Comfort

Precomfort

Economy

Protection

Window open

Window closed

Comfort

Economy

Protection

08:00

17:00

13:00

12:001)06:00

20:00

Example 1 (RDG400KN)

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Interaction of user operation (operating mode button) and central time schedule

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.

∂ During lunch break, the time schedule changes to Precomfort.

The operating 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 mode (5)

Time schedule Room operating mode

Operating mode button on the therm ostat

Window contact

Room 2

Effective room operating mode

Room 2

Comfort

Precomfort

Economy

Protection

Pressed

Window open

Window closed

Comfort

Economy

Protection

08:00

17:0013:0012:00

06:00

20:00

3171Z92

Example 2 (RDG400KN)

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Application for "Window contact", "Presence detector" and "Central time schedule"

In room 3, the time schedule switches to Comfort mode between 13:00 and 17:00.

∂ In the morning, as soon as presence is detected, the operating mode switches

to Comfort (1)

∂ The users open the window for a short time and the operating mode switches

to Protection (2)

∂ In the afternoon, the central time schedule sets the Comfort mode from 13:00

to 17:00 (3)

∂ After 17:00, the room is still occupied and Comfort mode is maintained

(occupancy via presence detector) (4)

∂ The users open the window and exit the room for a short time. The operating

mode switches to Protection as long as the window is open (5) ∂ As soon as the room is unoccupied, the thermostat switches to Economy (6) After this time period, the occupancy detected by the presence detector has no effect, and the central time schedule sets the thermostat to Protection mode (7).

Time schedule

Room operating

mode

Presence detector

Window contact

Room 3

Actual room operating mode

Room 3

Comfort

Precomfort

Economy

Protection

(holidays or

special days)

Occupied

Unoccupied

Window open

Window closed

Comfort

Economy

Protection

08:00

17:00

13:00

12:00

171Z9

2_0

Example 3 (RDG405KN)

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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 P08 or via bus with communication object "Comfort basic setpoint". The last intervention always wins.

For applications with heating and cooling sequence and a dead zone greater than 0 °C, the basic Comfort setpoint always remains the reference for the heating sequence.

However, the Comfort setpoint is either the heating setpoint or the cooling setpoint according to the active sequence (heating or cooling). See also the table in section

3.3.2 and hysteresis behavior, section 3.6.2.

The current setpoint also appears on the RDG..’s display. It can be adjusted via the rotary knob, or via bus from a remote device like a touch panel, operating unit, etc. The last intervention always wins.

The thermostat also shows the symbol of the active sequence while the rotary knob is turned:

– Setpoint and heating symbol ( ) show that the Comfort setpoint "Heating" is

being adjusted

– Setpoint and cooling symbol ( ) show that the Comfort setpoint "Cooling" is

being adjusted

3192z11

P33 w (w)

Dead zone Setpoint heating sequence Setpoint cooling sequence

Adjusting the Comfort setpoint via rotary knob causes a shift of the dead zone. Although only one setpoint shows on the RDG..’s display, both setpoints are shifted by the same value.

If the "Temporary setpoint" function is enabled via P69, the Comfort setpoint adjusted via the rotary knob, or via bus, is set back to the Comfort basic setpoint stored in P08 when the operating mode changes.

For comfort or energy saving purposes, the setpoint setting range can be limited to minimum (P09) and maximum (P10).

∂ If the minimum limit P09 is set lower than the maximum limit P10, both heating

and cooling are adjustable between these 2 limits

∂ The customer adjusts the desired setpoint and the thermostat controls the room

temperature accordingly

Comfort mode

Setpoint adjustment

Temporary setpoint

Setpoint limitation

P09 < P10 (comfort concept)

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Example

5癈 40癈25癈18癈

P10P09

Cooling setpoint adjustable: 18…25 °C Heating setpoint adjustable: 18…25 °C

∂ If the minimum limit P09 is set higher than the limit P10, …

– the setting range of the cooling setpoint is from P09…40 °C in place of

5…40 °C,

– the setting range of the heating setpoint is from 5…P10 °C in place of

5…40 °C. This allows the user to limit the maximum heating setpoint and the minimum cooling setpoint. This concept helps save energy costs.

∂ For heating OR cooling applications:

– The thermostat operates with the setpoint of the active sequence:

In heating mode, the heating setpoint is active and adjustable via the rotary

knob. In cooling mode, the cooling setpoint is active and adjustable via the

rotary knob

– Switching from the heating to the cooling setpoint and vice versa occurs

when the room temperature reaches the adjusted limitation (P09 or P10) of

the inactive sequence (e.g. the thermostat is in the heating sequence and

runs with the heating setpoint). When the room temperature reaches P09,

the thermostat switches to cooling mode and runs with the cooling setpoint

as long as the room temperature does not drop below P10

Example

5癈 40癈25癈21癈

P09P10

Cooling setpoint adjustable: 25…40 °C Heating setpoint adjustable: 5…21 °C

Use 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.

Use 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.

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!

The Economy setpoints are accessible at the Service level (P11, P12), the Protection setpoints at the Expert level (P65, P66).

P09 ≥ P10 (energy saving concept)

Economy mode

Protection mode

Caution

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3.3.2 Setting and readjusting setpoints

Room temperature setpoints can be … – set during commissioning, – readjusted during operation.

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

Stored in EEPROM of thermostat

Commissioning – HMI – Tool download

Input LTE-Mode Input S-Mode

Comfort basic setpoint Dead zone Comfort

Setpoints Heating Setpoints Cooling

Comfort basic setpoint

P08 Comfort basic setpoint P33 Dead zone Comfort

Setpoint Economy Heating Setpoint Economy Cooling

Setpoints Heating Setpoints Cooling

P11 Economy Heating P12 Economy Cooling

Setpoint Protection Heating Setpoint Protection Cooling

P65 Protection Heating P66 Protection Cooling

Current runtime setpoints in thermostat

Setpoint adjustment

New current runtime setpoints in thermostat

Input LTE-Mode

Input S-Mode

Local operation

Comfort setpoint

Setpoint shift H Setpoint shift C

Comfort setpoint Rotary knob Comfort setpoint

Economy Heating Economy Cooling

Setpoint shift H Setpoint shift C

Economy Heating Economy Cooling

Protection Heating Protection Cooling

Effective room operating mode Current setpoint (used by the thermostat for temperature control)

1) Only required f or heating AND cooling applications (see section 3.6.9)

2) The shift is added to the local shift (LTE-Mode only)

3) The last int ervention wins, either S-Mode input or local oper ation

4) To display the S-Mode objects of the Ec onomy heating and cooling setpoint (P11, P12), s et the

control parameter "Room temperatu re: Economy setpoints" to as group object in the ETS tool

The current setpoint (used by the thermostat for temperature control) is available on the bus for use in the central control unit.

KNX

Comfort basic setpoint Comfort setpoint Economy heating setpoint

Economy cooling setpoint

KNX

Current setpoint

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∂ The supported communication objects differ in LTE- and S-Mode ∂ Changes via the local HMI or via KNX have the same priority (last always wins) ∂ Adjusting the Comfort basic setpoint resets the runtime Comfort setpoint to the

basic setpoint

∂ Central setpoint shift is used for summer/winter compensation in particular ∂ Setpoint shift does not affect the setpoints stored in P08, P11, P12 and 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 the Protection setpoint is OFF, 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)

General notes

Notes on setpoint adjustment (LTE-Mode with Synco only)

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3.4 Applications overview

The room 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...5 must be set to OFF (remote configuration, factory setting) to select an application via commissioning tool. In this case, the output signal type needs to be set in the ACS tool as well.

The tool offers the applications printed in bold text (basic applications).

Application DIP switches Remote configuration

Via commissioning tool (factory setting)

∂ Synco ACS ∂ ETS

1ON2 3

OFF

4 5

Single-duct

∂ DC 0…10 V damper actuator (P47 = 0) ∂ 3-position damper actuator (P47 = 1) ∂ VAV compact controller KNX LTE mode

3192S07

MV MV

1ON23

OFF

4 5

Single-duct with electric heater

∂ DC 0…10 V damper actuator and On/Off,

PWM or 3-position electric heater (P47 = 0)

∂ 3-position damper actuator and

DC 0…10 V electric heater (P47 = 1)

∂ VAV compact controller KNX LTE-Mode

and electric heater

3192S08

MV MV

1ON2 3

OFF

4 5

Single-duct and radiator/floor heating

∂ DC 0…10 V damper actuator and On/Off,

PWM or 3-position radiator (P47 = 0)

∂ 3-position damper actuator and

DC 0…10 V radiator (P47 = 1)

∂ VAV compact controller KNX LTE-Mode

and radiator

3192S09

MV MV

1ON2 3

OFF

4 5

Single-duct heating and cooling coil

∂ DC 0…10 V damper actuator and On/Off,

PWM or 3-position heating and cooling (P47 = 0)

∂ 3-position damper actuator and

DC 0…10 V heating and cooling (P47 = 1)

∂ VAV compact controller KNX LTE-Mode

and heating/cooling coil

3192S11

(B1)

MVM

1ON2 3

OFF

4 5

- P47 is used to change the air damper output from DC 0...10 V (factory setting) to 3-position

- P46 is used to change the valve output from On/Off (factory setting) to PWM

Notes

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- DIP switch 4 is used to change output of Y10 from DC 0...10 V to DC 10...0 V

- DIP switch 5 is used to change the valve output from On/Off to 3-position

3.4.1 Applications with supply and extract air

Applications with supply and extract air can be realized in the following ways:

∂ Control signal from RDG.. and VAV air damper position (for primary air

optimization) are transmitted via KNX bus

∂ Communication settings (geographical zone, air distribution zone) of the RDG..

and the GDB..KN need to be set accordingly. Reference see [18] and section 3.10.13.

∂ This application requires VAV compact controllers with KNX LTE-Mode

Master (supply air)

Slave (extract air)

∂ RDG.. output Y10 controls both VAV compact controllers for supply air and

extract air

∂ The current air damper position of one VAV compact controller is transmitted to

input U1 and via KNX for primary air optimization

∂ This application requires analog VAV compact controllers (noncommunicating)

Supply air

Extract air

Master/slave function between the VAV

compact controllers for

supply and extract air

Parallel connection of

Y10 control signal and

air damper position feedback via U1

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3.5 Additional functions

The supply air temperature sent by the primary controller indicates whether cold or warm air is supplied. The controller determines the necessity to open or close the air damper according to the supply air temperature, the room temperature setpoint and the current room temperature. If no supply air temperature is available via bus, air changeover is cooling per default.

With "Single-duct" applications, changeover can also be accomplished via a local multifunctional input X1-D1 (P38, P42). Only one input source must be used, either local input X1-D1 or the KNX, and parameter "Control sequence" must be set to automatic heating/cooling changeover (P01 = 3). For functionality of the local changeover input, see below (also refer to section 3.8).

With applications "Single-duct with heating/cooling coil", changeover information of the heating/cooling coil can be received either via bus or the local multifunctional input X1-D1 (P38, P42). Only one input source must be used, either local input X1-D1 or the KNX, and parameter "Control sequence" must be set to automatic heating/cooling changeover (P01 = 3) (also refer to section 3.8).

In the absence of the required heating/cooling information from the bus (e.g. due to problems with data communication, power failure, etc.), the thermostat operates in the last valid operating mode (heating or cooling).

If a cable temperature sensor (QAH11.1 + ARG86.3) is connected to X1, and P38 = 2, the water or supply air temperature acquired by the sensor is used to change over from heating to cooling mode, or vice versa. ∂ When the water/air temperature is above 28 °C (adjustable via P37), the

thermostat changes over to heating mode. Heating mode is maintained until the temperature falls below 16 °C (adjustable via P36)

∂ When the water/air temperature is below 16 °C (adjustable via P36), the

thermostat changes over to cooling mode. Cooling mode is maintained until the temperature rises above 28°C (P37)

∂ If the water/air temperature is between the 2 changeover points immediately

after power-up (inside the hysteresis), the thermostat starts in the previous mode The water/air temperature is acquired at 30-second intervals and the operating state is updated accordingly.

P36

Tw[癈 ]

P37

3191D124

M Operating mode Cooling mode

Tw Water temperature Heating mode

The QAH11.1 cable temperature sensor for automatic heating/cooling changeover can be replaced by an external switch for manual remote changeover.

Air heating/cooling changeover

KNX

Supply air temperature

Water heating/cooling changeover

KNX

Heating/cooling changeover

Automatic heating/ cooling changeover via changeover sensor

Changeover switch

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3076Z 03

QAH11.1

T 癈

Contact open ⇓ heating mode Contact closed ⇓ cooling mode

The sensor or switch can be connected to input X1 or D1 (switch only), depending on the commissioning of the inputs (P38, P42) (also refer to section 3.8).

∂ Manual heating/cooling changeover means selection via changeover button on

the thermostat by repeatedly pushing the button until the required mode is shown on the display (automatic changeover takes place via bus or an external sensor/switch connected to X1 or D1)

∂ If manual heating/cooling changeover is commissioned (P01 = 2), heating/

cooling mode cannot be changed via bus/changeover sensor/switch; it maintains the last mode as selected locally via the button

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. Input X1 must be commissioned accordingly (see section 3.8).

The floor temperature should be limited for 2 reasons: Comfort and protection of the floor.

The floor temperature sensor connected to multifunctional input X1 acquires the floor temperature. If the temperature exceeds the parameterized limit (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 must be commissioned accordingly (P38 = 1) (see section 3.8).

Living rooms: Up to 26 °C for long-time presence, up to 28 °C for short-time presence. Bathrooms: Up to 28 °C for long-time presence, up to 30 °C for short-time presence.

The table below shows the relation between parameter, temperature source and temperature display:

Parameter P51

External temp. sensor available

Source for display of room temperature

Output control according to …

Floor temp. limit function

OFF No Built-in sensor Built-in sensor Not active OFF Yes External temp. sensor External temp. sensor Not active

10...50 ˚C No Built-in sensor Built-in sensor Not active

10…50 ˚C Yes Built-in sensor

Built-in sensor + limit by external sensor

Active

Dewpoint monitoring is essential to prevent condensation on the chilled ceiling. It helps avoid associated damage to the building. A dewpoint sensor with a potential-free contact is connected to multifunctional input X1 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.

Manual heating/ cooling changeover

External/return air temperature sensor

Floor temperature limitation function

Recommended values for P51

Dewpoint monitoring

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The condensation symbol is displayed during temporary override and the fault "Condensation in room" is sent via bus.

The input must be commissioned accordingly (P38, P42) (see section 3.8).

If the "Button lock" function is enabled via 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.

3.6 Control sequences

3.6.1 Sequences overview (setting via P01)

The mode of the control sequence can be set via P01. Depending on the selected application, it will have an impact either on the air or water sequence.

On all applications the changeover of the air sequence can be effected via the supply air temperature sent by the primary controller.

The available sequences depend on the type of application:

Parameter

P01 = 0

P01 = 1

P01 = 2

P01 = 3

Sequence

T 癈

癈

T 癈

c/o signal on

X1-D1

c/o signal

via bus

Supply air temp.

via bus

Available for basic application:



Heating Cooling

= heating

sequence for electric heater/ radiator

Manually select heating or cooling sequence (using the button on the thermostat)

Automatic heating/cooling changeover via external water/air temperature sensor or remote switch

Single-duct

   



1)1)

Single-duct and electric heater

- - - -



Single-duct and radiator

- - - -



Single-duct and heating/cooling coil

   



1) Changeover air

2) Changeover water (heating/c ooling coil)

For the relation between setpoints and sequences, refer to section 3.6.9.

Application Parameter P01 influences the ...

Single-duct

Air sequence Single-duct and electric heater

KNX

Fault state Fault information

Button lock

Note

Air sequence vs. water sequence

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Single-duct and radiator

Single-duct and heating/cooling coil

Water sequence

3.6.2 Hysteresis: Behavior of heating and cooling

∂ The control sequences heating and cooling depend on the heating and cooling

setpoints and the room temperature

∂ The thermostat remains in the heating sequence as long as the room

temperature does not reach the cooling setpoint

∂ The thermostat remains in the cooling sequence as long as the room

temperature does not reach the heating setpoint

The value of the output and the sequence as a function of the room temperature is shown in the following diagram in the case of a heating and cooling system:

Wheat Wcool

100%

0 = Cool

1 = Heat

3171D0 1

Wheat = current setpoint heating

Wcool = current s etpoint c ooling

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3.6.3 Application mode

The behavior of the thermostat can be influenced by a building automation and control system (BACS) via bus using the Application mode command. With this signal, cooling and/or heating activity can be enabled or disabled. Application mode is supported in LTE- and S-Mode. The RDG..KNX room thermostats support the following commands:

Application

mode

Description

Control sequence

enabled

0 Auto Thermostat automatically changes between

heating and cooling

Heating and/or cooling

1 Heat Thermostat is only allowed to heat Heating only 2 Morning

warm-up

Morning warm

is received, the room

should be heated up as fast as possible (if necessary). The thermostat only allows heating

Heating only

3 Cool Thermostat is only allowed to provide cooling Cooling only 4 Night purge

ight purge

is received, the room should

be aired with cool outside air if necessary. The thermostat opens the air damper and does not heat/cool with the coils or the electric heater. Function will be ended by any operation on the thermostat

Open air damper fully if night purge condition is valid

5 Pre-cool

Pre-cool

is received, the room should be

cooled down as fast as possible (if necessary). The thermostat only allows cooling

Cooling only

6 Off Thermostat is not controlling the outputs,

which means all outputs go to off or 0%

Neither heating nor cooling

8 Emergency

heat

The thermostat should heat as much as possible. The thermostat only allows heating

Heating only

9 Fan only All control outputs are set to 0% and the air

damper is fully opened. Function will be ended by any operation on the thermostat

Open air damper fully

With all other commands, the thermostat behaves like in Auto mode, i.e. heating or cooling according to demand.

1) Conditions for the "Night purge" function:

RDG400KN The function is activated when …

A: No supply air temperature via KNX is available:

Current room temperature > Comfort setpoint cooling B: The supply air temperature via KNX is available (or air changeover is made by the supply air temperature via KNX):

Current room temperature > supply air temperature and current room

temperature > Comfort setpoint cooling

RDG405KN Function is activated when:

A: No supply air temperature is not available:

Current room temperature > Calculate Comfort heating setpoint plus 1K B: Supply air temperature is available

Current room temperature > Calculate Comfort heating setpoint plus 1K and

the supply air temperature is plus 3K < Current room temperature.

Function is deactivated when: The current room temperature < Calculate Comfort heating setpoin or The supply air temperature plus 2K > Current room temperature

KNX

Application mode

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The state (heating or cooling) of the thermostat can be monitored with the ACS tool (diagnostic value "Control sequence"). The last active mode is displayed when the thermostat is in the dead zone or temperature control is disabled.

On single-duct applications, 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)

State changeover/continuous heating or cooling

Control sequence state (ACS diagnostic value)

Auto (0)

Heating Heating Cooling Cooling

Heat (1), (2), (8) Heating Heating

Cooling

Heating

Cool (3), (5)

Heating

Cooling

Cooling Cooling Night purge (4), Fan only (9)

Heating Heating

Cooling Cooling

On applications "Single-duct with electric heater/radiator/heating/cooling coil", the control sequence state depends on the application mode and the heating/cooling demand.

Application mode (via bus)

Heating/cooling demand Control sequence state

(ACS diagnostic value)

Auto (0)

Heating Heating

No demand Heating/cooling depending

on last active sequence

Cooling Cooling

Heat (1), (2), (8)

Heating Heating

No demand

Heating

Cooling

Heating

Cool (3), (5)

Heating

Cooling

No demand

Cooling

Cooling Cooling Night purge (4), Fan only (9)

No temperature control active Heating/cooling depending

on last active sequence

3.6.4 Minimum and maximum air volume

The factory setting for minimum and maximum air volume is 0/100% respectively. These values can be changed via P63/P64. Alternatively, Vmin and Vmax can be set directly on the VAV compact controller (G..B181.E/KN).

If Vmin is greater than 0, a minimum air flow Vmin is ensured in both Comfort and Economy mode. In Protection mode (or Economy with setpoint = OFF), Vmin is fixed to 0.

Comfort or Economy mode Protection mode: Vmin always = 0

ACS

Heating OR cooling

Heating AND cooling

KNX

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max

min

100%

TR [癈]

Vmin

Vmax

SpH

Comf/E co

SpC

Comf/ Eco

max

min

100%

TR [癈]

Vmin

Vmax

SpH

Prot

SpC

Prot

3.6.5 Single-duct applications

On single-duct applications, the thermostat controls an actuator (air damper, VAV system, valve, etc.) …

– in heating/cooling mode with changeover (automatically or manually), – in heating only mode, or – cooling only mode.

Cooling only is factory-set (P01 = 1).

The output signal for the air flow can be limited to a minimum and maximum value if required (see section 3.4.1).

Modulating control: 3-position or DC 0…10 V, KNX LTE-Mode

The diagrams below show the control sequence for modulating PI control.

Heating only (P01 = 0) Cooling only (P01 = 1)

max

min

XpH

100%

TR [癈 ]

Vmin

Vmax

max

min

100%

TR [癈 ]

XpC

Vmin

Vmax

Changeover (P01 = 2, 3)

max

min

Changeover

XpH

100%

TR [癈 ]

XpC

Vmin

Vmax

T[°C] Room temperature XpH Pr oportional band "Heating" w Room temperature setpoint XpC Pr oportional band "Cooling" Y Control command Actuator Vmin Minimum limitation for output

Vmax Maximum limitation f or output

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∂ The diagrams only show the PI controller’s proportional part ∂ Switching between heating and cooling depends on the setpoints and the room

temperature (see section 3.6.2)

Setting the sequence and the control outputs

Refer to sections 0, 3.6.1 and 3.7.

3.6.6 Single-duct applications with electric heater

General rule: In case of insufficient air flow, the thermostat cannot protect the electric heater against overtemperature. For this reason, the heater must be equipped with a separate safety device (thermal cutout).

On single-duct applications with electric heater, the thermostat controls a valve plus an electric heater. P01 is not available.

The output signal for the air flow can be limited to a minimum and maximum value if required using P63 and P64. On applications "Single-duct with electric heater", the minimum value of P63 is overridden, so that the air flow never drops below 10% while the electric heater is in operation.

The air flow starts to rise depending on the acquired room temperature, the current supply air temperature (if available) and the setpoint. The electric heater receives an On command when the acquired room temperature drops below the setpoint (= setpoint for electric heater).

Remote enabling/disabling of the electric heater is possible via input X1 or D1 for tariff regulations, energy savings, etc. Input X1 or D1 must be commissioned accordingly (P38, P42) (see section 3.8).

The electric heater can also be enabled/disabled via bus.

If input "Enable electric heater" is used via bus, the function must not be assigned to a local input X1 or D1. On start-up of the controller and if the primary controller sends the information that the primary fan is off, the thermostat disables the electric heater (see section

3.10.9).

To avoid overheating of an electric heater when switched off, the air flow signal of Vmin must be maintained for a preset "Fan overrun time" (P54, factory setting 60 seconds). In connection with a Synco primary controller it will be ensured that the primary fan keeps running during the fan overrun time (also refer to section 3.10.10).

Notes

Caution

Electric heating, active in cooling mode

Digital input "Enable electric heater"

KNX

Enable electric heater

Note

Fan overrun time

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Sequences

On/Off electric heater RDG400KN Modulating electric heater RDG400KN

TR [癈 ]

max

min

100%

TR [癈 ]

XpC

Vmin

Vmax

XpH

OFF

SDH

Change-over air

100%

TR [癈 ]

XpH

max

min

100%

TR [癈 ]

XpC

Vmin

Vmax

XpH

Change-over air

On/Off electric heater RDG405KN Modulating electric heater RDG405KN

1-stage heating: Changeover air is recognized as cooling or neutral

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2-stage heating: Changeover air is recognized as heating

Without a valid bus signal for changeover air, the air volume is only increased for cooling:

TR [癈 ]

max

min

100%

TR [癈 ]

XpC

Vmin

Vmax

OFF

SDH

100%

TR [癈 ]

XpH

max

min

100%

TR [癈 ]

XpC

Vmin

Vmax

Y Output signal TR Room temperature W Effective setpoint Comfort H Heating sequence C Cooling sequence

YV Volume flow rate

YE Electric heater XpH Proportional band heating XpC Proportional band cooling Vmin Minimum volume output

Vmax Maximum volume output

SDH Switching differential

heating (P30)

∂ The diagrams only show the PI thermostat’s proportional part ∂ Switching between heating and cooling depends on the setpoints and the room

temperature (see section 3.6.2)

Setting the sequence and the control outputs

Refer to sections 0, 3.6.1 and 3.7.

Notes

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3.6.7 Single-duct applications with radiator or floor heating

On single-duct applications with radiator or floor heating, the thermostat controls an air damper or a VAV compact controller plus a valve actuator. P01 is not available.

The output signal for the air flow can be limited to a minimum and maximum value if required (see section 3.4.1).

The air flow starts to rise depending on the acquired room temperature, the current supply air temperature (if available) and the setpoint. The radiator receives an On command when the acquired room temperature drops below the setpoint (= setpoint for radiator).

"Setpoint for radiator" is limited by the parameter "Maximum heating setpoint" (P10).

The radiator sequence can also be used for floor heating. The "Floor temperature limitation" function is described on page 32.

2-position radiator/floor heating Modulating radiator/floor heating

TR [癈 ]

max

min

100%

TR [癈 ]

XpC

Vmin

Vmax

XpH

OFF

SDR

Changeover air

100%

TR [癈 ]

XpR

max

min

100%

TR [癈 ]

XpC

Vmin

Vmax

XpH

Changeover air

Y Output signal TR Room temperature W Effective setpoint Comfort H Heating sequenc e C Cooling sequence YV Volume flow rate YR Radiator/f loor heat ing

XpH Proportional band heating XpC Pr oportional band c ooling Vmin Minimum volume out put Vmax Maximum volume output SDR Switching differential radiator

Radiator, active in cooling mode

Note

Floor heating

Sequences

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Without a valid bus signal for changeover air, the air volume is only increased for cooling:

2-position radiator/floor heating Modulating radiator/floor heating

TR [癈 ]

max

min

100%

TR [癈 ]

XpC

Vmin

Vmax

OFF

SDH

100%

TR [癈 ]

XpH

max

min

100%

TR [癈 ]

XpC

Vmin

Vmax

Y Output signal TR Room temperature W Effective setpoint Comfort H Heating sequenc e C Cooling sequence YV Volume flow rate YR Radiator/f loor heat ing

XpH Proportional band heating XpC Pr oportional band c ooling Vmin Minimum volume out put Vmax Maximum volume output SDH Switching differential heating

∂ The diagrams only show the PI controller's proportional part ∂ Switching between heating and cooling depends on the setpoints and the room

temperature (see section 3.6.2)

Setting the sequence and the control outputs

Refer to sections 0, 3.6.1 and 3.7.

Notes

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3.6.8 Single-duct applications with heating/cooling coil

On single-duct applications with heating/cooling coil, the thermostat controls an actuator (air damper, VAV system, etc.) plus a heating/cooling water coil.

The output signal for the air flow can be limited to a minimum and maximum value if required (see section 3.4.1).

The thermostat controls the reheating/cooling water valve either in heating/cooling mode with changeover (automatically or manually), heating only, or cooling only. Cooling only is factory-set (P01 = 01). The air flow starts to rise depending on the acquired room temperature, the current supply air temperature (if available) and the setpoint.

If the room temperature is above the setpoint for cooling (w), the valve receives an Open command and the air flow signal starts to rise to maintain the room temperature setpoint.

If the room temperature drops below the setpoint for heating (w), the valve receives an Open command.

The diagrams below show the control sequence for modulating PI control in Comfort mode.

2-position heating/cooling coil Modulating heating/cooling coil

YHC

TR [癈 ]

SDC

max

min

100%

TR [癈 ]

XpC

Vmin

Vmax

XpH

Changeover water

YHC

OFF

SDH

Changeover air

(w)

100%

YHC

TR [癈 ]

XpH

XpC

YHC

max

min

100%

TR [癈 ]

XpC

Vmin

Vmax

XpH

Changeover water

Changeover air

(w)

Y Output signal TR Room temperature w Comfort setpoint when heat ing sequence active (w) Comfort setpoint when cooling sequence active H Heating sequenc e C Cooling sequence YV Volume flow rate

XpH Proportional band heating XpC Pr oportional band c ooling Vmin Minimum volume out put Vmax Maximum volume output SDH Switching differential heating

Water coil valve in cooling mode

Water coil valve in heating mode

Control sequence

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Without a valid bus signal for changeover air, the air volume is only increased for cooling.

2-position heating/cooling coil Modulating heating/cooling coil

YHC

TR [癈 ]

SDC

max

min

100%

TR [癈 ]

XpC

Vmin

Vmax

Changeover water

OFF

SDH

YHC

(w)

100%

YHC

TR [癈 ]

XpH

XpC

YHC

max

min

100%

TR [癈 ]

XpC

Vmin

Vmax

Changeover water

(w)

Y Output signal TR Room temperature w Comfort setpoint when heat ing sequence active (w) Comfort setpoint when cooling sequence active H Heating sequenc e C Cooling sequence YV Volume flow rate

XpH Proportional band heating XpC Pr oportional band c ooling Vmin Minimum volume out put Vmax Maximum volume output SDH Switching differential heating

∂ The diagrams only show the PI controller's proportional part ∂ Switching between heating and cooling depends on the setpoints and the room

temperature (see section 3.6.2)

Setting the sequence and the control outputs

Refer to sections 0, 3.6.1 and 3.7.

Notes

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3.6.9 Setpoints and sequences

Comfort setpoint (w) is in the currently active heating or cooling sequence.

∂ If the supply air temperature is available (via KNX), the air

flow may also increase when the room temperature is below the heating setpoint

∂ If no supply air temperature is available, the sequence for

air flow control is cooling only

The setpoints for Economy and Protection mode are below the Comfort setpoints (heating) and above the Comfort setpoints (cooling). They can be set via P11, P12 (Economy) and P65, P66 (Protection).

3181D127

T[癈]

HeatProt

CoolProt

HeatEco

CoolEco

Comfort mode

Economy/Protection mode

Application

Heating Cooling Heating Cooling

Single-duct 1)

Single-duct with electric heater/ radiator/floor heating

Single-duct with heating/cooling coil

Heating and cooling Heating and cooling

SW < 1.24/ device index < C only: Single-duct

with electric heater/radiator/ floor heating

W = setpoint in Comfort mode

HeatEco/Prot

= setpoint heating in Ec onomy or P rotection mode

CoolEco/Prot

= setpoint cooling in Ec onomy or Protection mode

Y = air/water sequence

T = room temperature

The dead zone can be adjusted via P33.

1) Single-duct: A dead zone can be set also. In this case, the diagram is the same as for single-duct

with electric heater

Changeover air

Economy, Protection

eatEco/P

rot

CoolEco/P

rot

eatEco/P

rot

CoolEco/P

rot

eatEco/P

rot

CoolEco/P

rot

eatEco/P

rot

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3.6.10 Applications with external AQR sensor or QMX room operator unit (RDG405KN)

The equipment combination is for use in commercial buildings, offices, schools, museums, shops, etc.

AQR/QMX sensor

Advantages of equipment combination LTE-Mode S-Mode

Sensor can be installed in the optimal place for

temperature

acquisition

 

b) Unauthorized people cannot change settings on sensors installed in the room

 

c) The HVAC equipment and measurement point (T, CO2) are far apart (e.g. in

large spaces). Installing the thermostat near the equipment and the sensor on the measurement point reduces wiring costs and increases control accuracy

 

d) Several RDG.. room thermostats can operate with one room temperature

and/or CO2 value (in large spaces)



e) AQR/QMX sensor is more appropriate for interior design

 

With sensor AQR25.. or QMX3..0

The AQR25.. and QMX3.P.. sensors can deliver room temperature and CO2 values to the RDG405KN.

The RDG405KN and the sensors use LTE-Mode (KNX) communication. To exchange information (room temperature or CO2 values), both devices must have the same geographical zone, apartment and room (A.R.1, where "A" is the value of P82 and "R" is the value of P83 of the RDG405KN). This equipment combination works on a 1-to-1 basis. Values cannot be delivered from the sensor to several RDG405KN room thermostats.

For applications in S-Mode, the objects for room temperature of the RDG405KN must be set to Receive in ETS. The thermostat then works with the values acquired by the sensor. Default setting Transmit indicates that the RDG405KN provides the local room temperature via bus. One sensor can deliver data to several thermostats.

For commissioning with ACS V10 software: Set the same geographical zone on the RDG.. and the Siemens KNX sensor AQR..

∂ In the corresponding geographical/time switch zone, the RDG405KN is

shown under "Slaves"

∂ The IAQ KNX sensor (e.g. AQR2570) must be assigned as "Networked

devices" of the RDG405KN

The linked image cann ot be display ed. The file may hav e been moved, r enamed, or deleted. Verify that the link p oints to the cor rect file and location.

Note

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3.7 Control outputs

3.7.1 Overview

Different control output signals are available depending on the configuration of the thermostat via DIP switches 4 and 5, and P46 and P47.

Control output

Product No.

Modulating DC 0…10 V

2-position On/Off

2-position PWM

Modulating 3-position

Modulating KNX

RDG400KN RDG405KN

Y10

1)Y11)

Y1/Y2

(1 x / )

KNX LTE-Mode

1) Either On/Off, PWM or 3-position (triac)

For configuration of the control outputs, refer to section 3.7.4.

3.7.2 Control output for air flow

The demand calculated by PI control from the current room temperature and the setpoint is delivered to the damper actuator as a modulating DC 0...10 V signal via output Y10.

A 3-position control output for an air damper has 2 control signals, one for the Open command and one for the Close command. The thermostat features an internal stroke model to calculate the position of the actuator. Therefore, the running time from the fully closed to the fully open position must be adjusted via P44 (from 20 to 300 seconds; factory setting is 150 seconds).

A VAV compact controller receives its control signal via KNX bus. For communication settings (geographical zone, air distribution zone), refer to sections 3.10.3 and 3.10.13.

On single-duct applications, a closing synchronization is effected to readjust the internal stroke model to the real position of the actuator.

1. When the thermostat starts up, a closing signal (actuator running time + 150%

= 2.5 x running time) is delivered to ensure the actuator will be fully closed and synchronized with the control algorithm.

2. Each time the thermostat calculates the fully closed position, the actuator’s

running time is extended + 150% to ensure the corrrect position of the actuator.

3. When the actuator reaches the position calculated by the thermostat, a

waiting time of 30 seconds is observ ed to stabilize the outputs.

"Opening" synchronization is available for valve outputs only.

DC 0...10 V control signal

3-position control signal

Control signal

(KNX LTE mode only)

Synchronization

Note

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3.7.3 Control output for electric heater, radiator and heating/ cooling coil

The valve receives an Open/On command via control output Y1 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).

Off command for valve output 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).

The electric heater receives an On command via output Y1 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.

A safety thermostat (to prevent overheating) must be provided externally.

∂ The demand calculated by PI control from the current room temperature and the

setpoint are delivered via Y10 as a modulating DC 0...10 V signal

∂ The signal converter (SEM61.4) converts the DC 0...10 V signal to AC 24 V

PDM pulses for the current valve

∂ The current valve (SEA45.1) supplies the electric heater with AC 50…660 V

pulsed current

DC 0 ... 10 V

Y1G

Y1 L

5.7 kW max.

F...

K...

318 1D21

PWM

AC 24 V

N1 RDG400KN U1 Signal converter SEM61.4 (see Data S heet N5102) Y1 Current valve SEA45.1 (see Data Sheet N4937) K… Safety loop (e.g. safety thermostat and high-temperature cutout) FF Very fast-acting fuse F… Overcurrent trip

On/Off control signal

(valve, 2-position)

Electric heater control signal

(2-position)

Caution

DC 0...10 V for electric heaters

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Output Y1 delivers the Open command, and Y2 the Close command to the 3position actuator. The factory setting for the actuator’s running time is 150 seconds. It can be adjusted via P44 (Y1 and Y2). The parameter is only visible if 3-position is selected via DIP switch 5 or the commissioning tool.

1. When the thermostat is powered up, a Close command for the actuator’s

running time + 150% is delivered to ensure that the actuator fully closes and synchronizes to the control algorithm.

2. When the thermostat calculates the positions "Fully closed" or "Fully open", the actuator’s running time is extended + 150% to ensure the correct actuator position is synchronized with 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.

The demand calculated by PI control from the current room temperature and the setpoint is delivered via Y1 to the valve actuator as a PWM signal (pulse width modulation) for thermal actuators. The output is switched on for a period proportional to the heating/cooling demand and then switched off for the rest of the PWM interval.

The interval is 150 seconds (factory setting). It can be adjusted via P44 (Y1). The parameter is only visible if 2-position is selected via DIP switch 5 or the commissioning tool.

For PWM, the integral time (P35) must be set to 0!

For thermal valve actuators, set the running time to 240 seconds.

∂ Never apply PWM to an electromotoric actuator ∂ It is not possible to ensure exact parallel running of more than 2 thermal valve

actuators. If several VAV systems are driven by the same thermostat, preference should be given to electromotoric actuators with On/Off or 3-position control

For electric heaters, set the running time to 90 seconds. To avoid burn-off of mechanical contacts by frequent switching, use a current valve (e.g. SEA45.1) in place of a relay or contactor. For PWM, the integral time (P35) must be set to 0.

3-position control signal

Synchronization

PWM control

Note

PWM for thermal valve actuators

Notes

PWM for electric heaters

Note!

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3.7.4 Control outputs configuration (setting via DIP

switches 4 and 5 or tool, and P46…P47)

Control outputs

Application



On/Off

(2-position)

Modulating

PWM

(2-position)

Modulating

3-position

Modulating

DC 0…10 V

Modulating

KNX

Single-duct

  

Single-duct and electric heater

    

Single-duct and radiator/floor heating

    

Single-duct heating/cooling coil

    

The function of the control outputs is set via DIP switches 4 and 5:

OFF

12345

OFF

123 45

OFF

123 45

OFF

12345

3181D101

DIP 4: Y10 = DC 0…10 V DC 0…10 V DC 10…0 V

(inverted)

DC 10…0 V (inverted)

DIP 5: Y1/Y2 = 2-position 3-position 2-position 3-position

Y1-Y2:

∂ If 2-position is selected, the factory setting is On/Off.

If PWM is required (pulse width modulation), P46 must be set to 2 = PWM

P47:

∂ 0 = VAV box: DC 0…10 V control signal or KNX LTE-Mode ∂ 1 = VAV box: 3-position control signal

All DIP switches must be set to OFF if the application is commissioned via tool. In this case, the control outputs must be set via the ACS tool.

For details concerning connection of peripheral devices and setting of the DIP switches, refer to the Mounting Instructions M3192 [3].

Single-duct with 3-position damper actuator:

OFF

12345

P47 = 1

Application Y1/Y2 =

3-position

Control output VAV = 3-position

Notes

Example

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3.8 Multifunctional input, digital input

The thermostat has 2 multifunctional inputs X1 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 P38 and P39 for X1, and P42 and P43 for D1.

The current temperature or state of the inputs X1 and D1 is available on the bus for monitoring purposes.

The parameters can be set to the following values:

Function of

input

Description

Type

0 Not used No function. -- -1 External/return

air temperature

Input for external room temperature 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 P51.

AI --

KNX

Supply air temperature Heating/ cooling changeover

2 Heating/cooling

changeover

Sensor input for "Automatic heating/cooling changeover" function. A switch can also be connected rather than a sensor (switch closed = cooling, see section 3.4.1). With single-duct applications, the input changes over the air sequence; With single-duct with heating/cooling coil applications, the input changes over the water sequence (heating/cooling coil) Heating/cooling changeover is also possible via bus. ("Supply air temperature" for changeover air, "Heating/ cooling changeover" for changeover water). In this case, the function must not be assigned to any local input X1-D1 (also refer to section 3.4.1). Diagnostic value 0 ˚C is displayed for closed contact/ 100 ˚C for open contact, if a switch is connected.

AI/DI DI

KNX

Window state

3 Operating mode

switchover (RDG400KN only)

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-D1 (also refer to section 3.2).

DI DI

3 Window contact

(RDG400KN only)

Digital input to switch over the operating mode to Protection. If the window contact is active, user operations are ineffective and OFF is displayed. Window contact is also possible via bus. In this case, do not assign the function to any local input X1-D1 (also refer to section 3.2).

DI DI

4 Dewpoint

monitor

Digital input for a dewpoint sensor to detect condensation. Cooling is stopped if condensation occurs.

DI DI

KNX

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Function of

input

Description

Type

KNX

Enable electric heater

5 Enable electric

heater

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-D1 (also refer to section 3.6).

DI DI

KNX

Fault information

6 Fault 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 (also refer to section 3.10.11). (Alarm x, with x = 1 for X1, x = 3 for D1). Note: Fault displays have no impact on the thermostat's operation. They merely represent a visual signal.

DI DI

KNX

D1, X1 (Digital)

7 Monitoring input

(Digital)

Digital input to monitor the state of an external switch via bus.

DI DI

KNX

X1, (Temp.)

8 Monitoring input

(temperature)

Sensor input to monitor the state of an external sensor (e.g. QAH11.1) via bus.

AI --

KNX

Presence detector

9 Presence

detector (RDG405KN only)

Presence detector input switches the operating mode to Comfort when the room is occupied and switches back to Economy when the room is unoccupied. Presence detector is also possible via bus. In this case, do not assign the function to any local input X1-D1 (also refer to section 3.2.1).

DI DI

∂ Operational action can be changed between normally open (NO) and normally

closed (NC) via P39 (or P43 if a digital input)

∂ Each input X1 or D1 must be configured with a different function (1…5).

Exception: 1 or 2 or 3 inputs can be configured as fault (6) or monitoring input (7, 8)

∂ X1 is factory-set to "External sensor" (1) and D1 to "Operating mode

switchover" (3)

For more detailed information, refer to section 0.

∂ For inputs X1-D1, one physical switch can be used for up to 20 room

thermostats (parallel connection).

Caution! Do not mix X1 (mains potential) and D1

∂ For sensors on inputs X1-D1, the cable length is max. 80 m

The information about the thermostat's damper position can be used to influence the fan speed of a primary air handling unit. The thermostat receives the damper position from a damper actuator or a VAV compact controller as a DC 0...10 V signal using input U1. The damper position (0...100%) is sent on the bus.

An RMU7.. primary controller uses the LTE information of all connected room thermostats to calculate the total air flow demand. The state of U1 can be monitored via communication object 36 "U1".

The present air damper position is transmitted on the KNX bus. For communication settings (geographical zone, air distribution zone), see sections

3.10.2 and 3.10.3.

Installation

Air damper position VAV via U1 (RDG400KN RDG405KN)

KNX

U1 (0...100%)

VAV air damper position

(KNX LTE-Mode only) (RDG400KN, RDG405KN)

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On the RDG405KN, the analog input U1 can be used for different purposes. This input can be set via P40.

Function of input

Description

Not used No function.

Input for air damper position

See section above "Air damper position VAV via U1"

nput

IAQ

sensor

Input for an external analog CO2/VOC sensor. This input is calibrated for a sensor range of 0…2000 ppm and cannot be set.

∂ The U1 value is always available on the bus via S-Mode object (e.g. object 36

on the RDG400KN and RDG405KN), even with selection P40 = 0

∂ The thermostat does not make a distinction between the DC 0...10 V signal from

a CO2 sensor and that from a VOC sensor

3.9 Handling faults

When the room temperature is outside the measuring range (that is 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 when the room temperature returns to within the measuring range.

For fault status messages on the bus, refer to section 3.10.11.

3.10 KNX communications

The RDG..KNX room thermostats support communications as per KNX specification.

S-Mode Standard mode; engineering via group addresses

LTE-Mode Logical Tag Extended mode, for easy engineering,

used in connection with Synco

3.10.1 S-Mode

This mode corresponds to KNX communications. Connections are established via ETS by assigning communication objects to group addresses.

3.10.2 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.

Input U1 (RDG405KN)

KNX

Notes

Temperature out of range

KNX

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To make this possible, the following conditions 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:

∂ For a detailed description of KNX (topology, bus supply, function and setting of

LTE zones, filter tables, etc.), refer to Basic Documentation "Communication via the KNX bus for Synco 700, 900 and RXB/RXL" [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]

RDG

Sensor

Outside temperature zone 31

Air distr zone 1 (With RMU basic type "P")

Geogr. zone 2.5.1

Refr. distr zone 1

Air demand

Outside temperature

Air demand

Outside temperature zone 31

Air distr zone 1

Cool demand

Time Switch

Operating mode Operating mode

Chiller

Refr. distr zone 1

Cool demand

Geogr. zone 2.5.1 or 2.1.1

Room temperature

Heat distr zone 1

Heat demand

Boiler

Heat distr zone 1

Heat demand

Heat distr zone 2

Heat surface demand

Boiler

Heat distr zone 2

Heat surface demand

Air handling unit

Definitions

Engineering and commissioning

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3.10.3 Zone addressing in LTE-Mode (in connection with Synco)

In cases where RDG..KNX room thermostats are used in LTE-Mode (e.g. in connection with Synco), zone addresses need to be allocated. The following zone addresses must be defined together with the Synco devices at the planning stage depending on the application:

Short description

Factory setting

Parameter

Geographical zone (apartment) --- (out of service) P82 Geographical zone (room) 1 P83 Heat distribution zone heating coil --- (out of service) P84 Refr distribution zone cooling coil --- (out of service) P85 Heat distribution zone heating surface --- (out of service) P86 Air distribution zone --- (out of service) P87

"Subzone" of "Geographical zone" is fix 1 (not adjustable). The device sends and receives LTE communication signals only if the zone address is valid (not OSV = out of service).

The zones to be defined are as follows:

Geographical zone (space zone)

(Apartment . Room . Subzone) Apartment = ---, 1...126 Room = ---, 1...63

Subzone = fix 1

Zone in which an RDG..KNX thermostat is physically located. Other room-specific devices may also be located in this zone.

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 uses the information received from the same apartment but with room "1" A.1.1 (Office).

Example: Commercial building

In a commercial building, the time switch information is sent by the RMB795 central control unit. The zones are divided into socalled "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. Legend: D = device address (P81)

G = geographical zone (P82, P83)

(Apartment.Room.Subzone)

D: 001 G: 3.1.1

Meeting room

Office 1

Server room

Office 2

D: 002 G: 2. 1.1

D: 003 G: 2.2.1

D: 10 G: 1. 1.1

Corridor D: 12

G: 1.3.1

D: 11 G: 1. 2.1

D: 004 G: 4.1.1

3171z201

Heat distribution zone

Information related specifically to the hot water system in heating coils

Note

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heating coil

Zone = ---, 1...31

is exchanged within this zone. The zone also includes a Synco device to process the information (e.g. RMH7.. or RMU7.. with changeover).

Heat distribution zone heating surface (radiator)

Zone = ---, 1...31

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. RMH7.. or RMB7..).

Refrigeration distribution zone cooling coil

Zone = ---, 1...31

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. RMU7..).

Air distribution zone

Zone = ---, 1...31

This distribution zone is for air applications (VAV, CAV). Information related specifically to the air handling system is exchanged within this zone (e.g. air demand). This zone also includes a Synco device to process the information (RMU7.. basic type P).

Outside temp. zone

Zone = fix 31

Outside temperature received in outside temperature zone 31 will be/ can be displayed on the thermostat if commissioned accordingly (P07 = 2).

3.10.4 Example of heating and cooling demand zone

The building is equipped with Synco controls on the generation side and RDU../ RDG.. room thermostats on the room side.

RMH760 RMH760 RMB795

Konnex TP1

RDG...RDU...

RDF...

P3171Z01

Heat requistion

Heat dem and

Heat distr zone 1

Heat source

Controll er 1 Controller 2

Controller 3

Controll er 4 Controller 5 Controller 6

Controller 1 Controll er 2 Controller 3 Controller 4 Controller 5 Controller 6

Heating circuit fan coil

Fan co il room A

VAV box room B

Fan coil room C

DHW heating

Heat demand

Heat dem and

Heat requisti on

Heat distr zone sourc e side: 1

Heat distr zone 2

Heat distr zone 2 Hea t di str zone 2

Heat distr zone 2

Setting values

MV MV

T T

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In the case of a typical application, the individual RDU../RDG.. room thermostats – when used with the RMB795 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.

This type of application can analogously be applied to refrigeration distribution zones.

3.10.5 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 is received at least once. If a communication object is not received within this period of time, 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.

Fixed times are specified as follows:

– Receive timeout: 31 minutes – Send heartbeat: 15 minutes

Object [KNX obj. Nr.] I/O Minutes Default value

Room operating mode:

Time switch [12]

Receive 31 Comfort

Room operating mode:

Preselection [7]

Receive 31 Auto

Application mode [31] Receive 31 Auto

Individual zones can also be disabled (out of service) via control parameter if not used. In disabled zones, the LTE signal is no longer periodically sent, and will therefore reduce the bus load.

3.10.6 Startup

The application is restarted after every reset, so that all the connected motorized valve actuators are synchronized (see "Control outputs", 0).

After a reset, it takes up to 5 minutes for all the connected room thermostats to restart, thus avoiding network overloads when restarting. At the same time, it reduces the load on the KNX network, since not all thermostats transmit data at the same time. The delay (T

WaitDevice

) is determined by the thermostat's device address.

After the delay, the device starts to send.

Explanation relating to the illustration

Note

LTE-Mode/S-Mode

Reducing the bus load

Startup response

Startup delay

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3.10.7 Heating and cooling demand

In connection with Synco, the heating and/or cooling demand (for water) 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 3.10.4.

In S-Mode, the current state signals of the control outputs are available.

3.10.8 Air demand

In connection with Synco, the air demand from each room is transmitted to the BACS to provide the required air volume.

In S-Mode, the current state signal of the air damper is available.

3.10.9 Electric heater interlock by supply air controller (LTE-Mode only)

To avoid overheating of an electric heater, sufficient flow of supply air must be guaranteed. The thermostat features the function "Interlock of electric heater via supply air controller", which is active when a supply air controller (e.g. Synco RMU7..) is used in the system. The controller of the supply air fan sends the fan status (StatusSATC) to the thermostat when the fan is running, after which the electric heater is allowed to turn on if there is a call for heat. When the supply air fan is not running, the electric heater is kept turned off, even though there is a demand for heat. The fan symbol is displayed when the supply air fan is running.

∂ Electric heater enable via local input X1-D1 or KNX overrides any release by this

interlock function, and vice versa (last intervention wins)

∂ After power-up of the thermostat, the electric heater is completely disabled for at

least 5 minutes or until a supply air controller is detected. If no supply air fan controller is used, the electric heater is allowed to turn on if there is a demand for heat

∂ The fan information is broadcast every 15 minutes or on change of value. If no

value is received any more, the thermostat deactivates the interlock function after a timeout of 31 minutes

KNX

Heating output primary Cooling output primary

KNX

Control output VAV

Notes

Caution

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3.10.10 Primary fan overrun after switching off the electric heater

To avoid overheating of the electric heater after it has been switched off, the air flow must be maintained for a while.

In connection with a supply air controller (e.g. Synco RMU7..) this will be automatically ensured by exchanging the necessary information. The controller of the supply air fan will only switch off the supply air fan when all electric heaters are cooled off.

The cool off time of the electric heater can be adjusted for each heater via P54 (factory setting is 60 seconds).

3.10.11 Fault function on KNX

If a fault occurs (e.g. digital fault input, dewpoint, communication configuration, etc.), a fault is sent on the bus.

An RDG.. thermostat listens on the bus and sends its fault when it 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 is first displayed and sent on the bus.

Fault transmission is different in LTE- and S-Mode:

S-Mode LTE-Mode

Fault state Alarm info (error code and internal information) Fault information (internal information)

Alarm text (default text can be edited with ACS tool)

The table below shows the error code and default alarm texts:

Thermostat Fault information on the bus

Prio Fault Display Error code Default fault text

Text adjustable *)

- No fault --- 0 No fault



1 Bus power supply**)

bus

5000 No bus power

supply

---

2 Device address error Addr 6001 >1 id device address ---

3 Condensation 4930 Condensation in the

room



4 External fault input X1 AL1 9001 Fault input 1



5 External fault input D1 AL3 9003 Fault input 3



*) D efault alarm texts are stored in the thermostat’s non-volatile memory and can be adjusted using

the ACS t ool

**) This error will not be s ent on the bus (because there is no bus! )

Note

Caution

KNX

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∂ Priority order is #1…5 ∂ External faults #4…5: If faults are active, the display shows AL1, AL3

alternating. On the bus, only the fault with the highest priority is sent

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.

After a timeout of 48 hours, sending of faults will automatically be enabled again.

3.10.12 Emergency control (LTE-Mode only)

In case of smoke or fire, the air damper can be overridden via KNX. The necessary information is provided by function block "HVAC Emergency Mode".

The table below describes the behavior of the controller output:

# Data point value Air damper

0 Normal Normal operation 1 EmergPressure Fully open 2 EmergDepressure Fully closed 3 EmergPurge Fully open 4 EmergShutdown Fully closed 5 EmergFire Fully closed

Emergency signals have the highest priority and command the control output accordingly. Any ongoing function like fan-overrun, etc., is stopped immediately.

The priority is as follows:

1. Smoke (Emergency 1...4)

2. Fire (Emergency 5)

3. Fan overrun (Emergency 0 and electric heater fan overrun function is active)

4. Normal operation (Emergency 0 and operation by operating mode button)

3.10.13 Application with VAV compact controller (KNX LTE-Mode only)

For applications with RDG.. and VAV compact controller (KNX LTE-Mode), the information (control signal, current air damper position) is transmitted on the KNX bus. The communication between the devices is established by setting the KNX parameters in the thermostat and in the VAV compact controller.

KNX parameter RDG.. GDB..KN GDB..KN KNX address 0.1.2 0.1.3 0.1.4 Master/slave Master Slave Type of damper actuator Supply air Extract air Geographical zone (apartment) 1 1 1 Geographical zone (room) 1 1 1 Air distribution zone 5 5 5

For information on applications with supply air and extract air, refer to section 3.4.1. For details on KNX parameters in LTE-Mode, refer to section 3.10.3.

Priority of alarms

KNX

Fault transmission

Example

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3.11 Communication objects (S-Mode)

3.11.1 Overview

KNX

Page Object # and name Thermostat Object # and name Page

13 1 System time 13 3 Time of day 13 38 Outside temperature 21 Room temperature *) 13 18 12 Room operating mode:

Time switch

16 Room operating mode:

State

18 7 Room operating mode:

Preselection

24 Room temperature:

Current setpoint

17, 19

20 Room operating mode:

Window state

25 Control output VAV 58

27 22 Room temperature:

Comfort basic setpoint

26 Heating output primary

27 23 Room temperature:

Comfort setpoint

27 Cooling output primary

35 31 Application mode 37 D1 52 52 28 Enable electric heater 32-33 X1 (temperature/digital) 52 31, 51 30 Supply air temperature 36 U1 (0...100%) 52 51

29 Heating/cooling ch'over

60 6 Fault transmission 5 Fault state 33, 59 20

39 Presence detector

40 Economy heating setpoint

41 Economy cooling setpoint

42 Supply air: limit value min

43 Supply air: limit value max

44 CO2 concentration

4 Fault information 33, 52,

Input communication object Output communication object Input and output communication object

1) 8-bit and 1-bit object available, selectable via parameter in ETS

2) Availability d epending on selected application/function

3) Only on RDG405KN

*) Transmit only on RDG400KN

Transmit and Receive on RDG405KN

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3.11.2 Description of communication objects

Obj Object name Function Type/length Flags

1 System time Time and

date

19.001

8 Byte

CWU

System time for display on the thermostat (s ee P07 (3 or 4)) 3 Time of day Time and

date

10.001

3 Byte

CWU

Another object for rec eiving the time of day for display on the thermostat (see P07 (3 or 4))

4 Fault information Alarm

Info

219.001

6 Byte

Common alarm output. If an alarm occurs, the alar m number is transmitted

5 Fault state Faulty/

normal

1.005

1 bit

Common alarm output. If an alarm occurs, the alarm flag is s et 6 Fault

transmission

Enable/ disable

1.003

1 bit

CWU

A supervisor alarm system can dis able the broadcasting of alarms by the devic es. 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

mode: Preselection

Auto Comfort PreComf. Economy Protec tion

20.102

1 Byte

CWTU

Controls the room operating mode selection of the thermostat via bus. The command can als o be submitted as f our 1-bit c ommunic ation objects (8...11). The last interaction wins – either from local operating mode button or via bus. Note: The thermostat changes Prec omfort either into Economy or Comfort (s electable via P88).

8 9 10 11

Operating mode: Preselection Auto Comf Eco Prot

Trigger 1.017

1 bit

Switch room operating mode to either Auto, Comfort, Ec onomy or Protection. The last interaction wins – either fr om the local operating mode button or via bus.

12 Room operating

mode: Time switch

Comfort Economy PreComf. Protec tion

20.102

1 Byte

CWU

This information is provided by a c entral time switch or a supervisor and defines the actual HVAC operating mode. The command can als o be submitted via three 1-bit communication objects (13...15). Protection mode has the highest priority and c annot be overridden. Note: The thermostat changes Prec omfort either into Economy or Comfort (s electable via P88).

13 14 15

Time switch Comfort Economy Protection

Trigger 1.017

1 bit

Switch the HVAC mode to eit her Comfort, Economy or Pr otection.

16 Room operating

mode: State

Comfort Economy Protec tion

20.102

1 Byte

CRT

Obj Object name Function Type/length Flags

Effective r oom operating mode used by the thermostat (considering time switch, user selection, window c ontact, etc.) This state information is available via one 8-bit enumeration or three 1bit communication objects (17...19). Note: The thermostat does not support Pr ecomfort mode.

17 18 19

Room operating mode: State Comfort State Economy State Protection

ON OFF

1.002 1 bit

Corresponding c ommunic ation object sends "True" 20 Window state Open

Closed

1.019 1 bit

CWU

The thermostat is s et to Economy mode if value "1" (open) is received. It s witches 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, D1 (P38, P42).

Only one input source must be us ed, either local input X1-D 1 or the KNX bus.

21 Room temperature

(RDG400K N)

Temp. value

9.001 2 Bytes

CRT

The value of the room temperature acquired via built-in or extern al sensor is available via this communication object.

22 Room tempera-

ture: Comfort basic setpoint

Temp. value

9.001 2 Bytes

CWU

If function "Temporary setpoint" is enabled via P69, then – after an operating mode change – the setpoint adjustments made by the user and via communic ation object 23 is dismissed and the thermostat will be reset to the Comfort basic s etpoint. Note: Setpoints that have been changed via the local HMI may be overwritten during a system s tartup from a central master controller, e.g.RMB795.

The Comfort basic setpoint is stored in EEPROM (see section

3.3.2).⇓ The serv ice life of the EEPROM depends on the number of write cycles. Never write this communication object cyclically!

Room temperature:

Comfort setpoint

Temp. value

9.001 2 Bytes

CWTU

Communic ation object used to shift the s etpoint 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.

Room temperature:

Current setpoint

Temp. value

9.001 2 Bytes

CRT

Current setpoint, including shift, compensation, etc., used by the thermostat for temperature control

25 Control output

VAV

0…100% 5.001

1 Byte

CRT

Indicates the position of the air damper. E.g. single-d uct 26 Heating output

primary

0…100% 5.001

1 Byte

CRT

Indicates the position of the heating actuator of the electric heating. E.g. single-duct with electric heater application: Output of the electric heater.

27 Cooling output

primary

0…100% 5.001

1 Byte

CRT

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Obj Object name Function Type/length Flags

Indicates the position of the cooling actuator of the first stage. E.g. single-duct with h/c coil application: Output of the cooling coil

28 Enable electric

heater

Enable/ disable

1.003 1 bit

CWU

An electric heater can be disabled with this c ommunic ation object (e.g. to meet tariff regulations). The same function is also avai lable via local multifunctional input X1-D1 (P38, P42).

Only one input source must be used, either local input X1/D1or KNX bus.

29 Heating/cooling

changeover

Heating/ cooling

1.100 1 bit

CWU

Changeover information transmitted via bus. Only available with application "Single-duct with heating/cooling coil". Default: Current mode before power down. The same function is also avai lable via local multifunctional input X1-D1 (P38, P42).

Only one input source must be used, either local input X1/D1or KNX bus.

30 Supply air

temperature

Temp. value

9.001 2 Byte

CWU

The supply air temperature s ent by the supply air c ontroller indicates whether cold or hot air is supplied (for VAV changeover). The contr oller determines the necessity to open or clos e the air damper acc ording to the supply air temperature, the room temperature setpoint, and the current room temperature. The same function is also avai lable via local multifunctional input X1-D1 (P38, P42).

Only one input source must be us ed, either local input X-D1or KNX bus.

31 Application mode HVAC

control mode

20.105 1 Byte

CWU

0 Auto (default) Heating and/or cooling 1 H eat Heating only 2 Morning warmup* Heating only 3 Cool Cooling only 4 Night purge Open air damper fully 5 Precool* Cooling only 6 OFF Neither heating nor c ooling 8 Emergency heat* Heating only 9 Fan only Open air damper fully (= night

purge)

* Function handled like Heat ( 1) or Cool (3)

32 X1: Temperature Temp.

value

9.001 2 Byte

CRT

Indicates the values of the temperature sens ors connected to the local inputs X1

3337X1: Digital

D1: Digital

ON OFF

1.001 1 bit

CRT

Indicate the status of the digital inputs (adjusted via P39…P 43) including considering the operating action

36 U1: 0..10V 0…100% 5.001

8 bit

CRT

DC 0…10 V at input U1 is indic ated as a value 0…100% 38 Outside

temperature

Temp. value

9.001 2 Byte

CWU

The outside temperature acquired by a KNX sensor can be displayed on the thermost at, if P07 " Additional user information” is set = 2 (outside temperature).

The following objects are only available on RDG405KN

21 Room temperature

(RDG405K N)

Temp. value

9.001 2 Bytes

CRT

The value of the room temperature measured via built-in or external sensor is available on bus when this c ommunic ation object is set to Transmit. By setting the object to Receive, the thermostat receives and works with the room t emperat ure from an external sensor

39 Presence Sensor 1.018

1 bit

CWU

Room oper ating mode : Presence detector Switch the d evice to Comfort mode

40 Room tempera-

ture: economy heating setpoint

Temp. value

9.001 2 bytes

CWU

Communication object to adjust the Ec onomy heating setpoint used by the thermostat (see section 3.3.2). It directly changes the value of the local parameter "Economy setpoint" P11. S-Mode object needs to be enabled by setti ng Room temp.: Economy setpoints to as group object in ETS. The Economy setpoint is stored in EEPROM. The service lif e of the EEPROM depends on the number of write cycles. Never write this communication object cyclic ally.

41 Room tempera-

ture: Economy cooling setpoint

Temp. value

9.001 2 bytes

CWU

Communication object to adjust the Economy cooling setpoint used by the thermostat (see section 3.3.2). It directly changes the value of the local parameter "Economy setpoint" P12. S-Mode object needs to be enabled by setti ng Room temp.: Economy setpoints to as group object in ETS. The Economy setpoint is stored in EEPROM. The service lif e of the EEPROM depends on the number of write cycles. Never write this communication object cyclic ally.

42 Supply air : limit

value min (%)

0…100% 5.001

1 Byte

CWU

The output signal f or the air f low can be limited to a minimum value (P63)

43 Supply air: Limit

value max. ( %)

0…100% 5.001

1 Byte

CWU

The output signal f or the air flow can be limited to a maximal value (P64)

44 IAQ: CO

concentration

ppm value

2 bytes CWT

CO2 concentration in ppm. Range :0…5000 ppm

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3.12 Communication objects (LTE-Mode)

Communication objects RDG4.. Communication objects

Geographical zone

A.R.S

Room operating mode:

Time switch

(Time switch zone)

X.1.1/X.Y.1

Application mode

Emergency mode

Room operating mode:

Preselection

Geographical zone

A.R.S

X.Y.1

Room temperature

Comfort setpoint

IAQ (ppm)

Setpoints heating

Setpoints cooling

Setpoint shift heating

Setpoint shift cooling

Heat distr. zone

Heating coil energy

demand

1) 2)

heating coil

Heating/cooling

changeover

Ref. distr. zone

cooling c oil

Cooling coil energy

demand

1) 2)

Heat distr. zone

heating surface

Energy demand heating

surface

1) 2)

Distribut ion zone air

Supply air temperature

Energy demand air

Status SATC

Air damper position

Broadcast

Fault transmission Fault information

Fault text

Outside air t emp. zone

Outside temperature fix 31

Note:

1) Available depending on selected application

2) Available only on RDG..

3) Only for RDG405KN

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3.13 Control parameters

A number of control parameters can be readjusted to optimize the 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

1. Hold down both the left and right buttons simultaneously for 4 seconds.

Release them, and hold the right button again within 2 seconds until P01 displays. Continue with step 2.

1. Hold down both the left and right buttons simultaneously for 4 seconds.

Release them, and hold the left button again within 2 seconds until the temperature disappears. Turn the rotary knob counterclockwise minimum ½ rotation. Pxx displays. Continue with step 2.

2. Select the required parameter by turning the rotary knob.

3. Press button (OK); the current value of the selected parameter starts

blinking and can be changed by turning the rotary knob.

4. Press button (OK) to confirm the adjusted value or press button

(Esc) to cancel the change.

5. If you wish to adjust additional parameters, repeat steps 2…4.

6. Press button (Esc) to leave the parameter setting mode.

The factory setting for the control parameters can be reloaded via P71 by changing the value to "On". Confirm by pressing the right button. Then, 8888 displays during reloading.

Enter only Service level

Enter Expert level with diagnostics and test

Adjusting parameters

Resetting parameters

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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 the ACS.

With the ACS tool, the parameters can be changed …

– during commissioning via parameter download (all parameters), – during normal operation via Popcard (most parameters).

Most parameters can be changed during normal operation using the OZW772 web server.

Only the parameters for the device address can be downloaded via ETS. This is to simplify matters and to avoid conflicts. It allows you to further engineer communication objects of an RDG.. previously commissioned via local HMI or the ACS tool (assigning communication objects to group addresses).

∂ The basic application can only be changed via parameter download with the

ACS tool

∂ The RDG..KNX room thermostats require version ETS4 or higher/ACS790

The connection of a KNX commissioning/operating tool to the RDG.. is described in section 4.2.

ACS

OZW772 web server

ETS

Notes

Connecting a KNX tool

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3.13.3 Parameters of the Service level

Parameter

Name Factory setting Range

RDG400KN

RDG405KN

Dependencies

Service level

P01 Control sequence 1 = Cooling only 0 = Heating only

1 = Cooling only 2 = H/C changeover manual 3 = H/C changeover auto

 

P02 Operation via room op selector 1 1 = Auto - Protection

2 = Auto - Comfort - Ec onomy -

Protec tion

 

P04 Unit C (0) C = degrees Celsius

F = degrees Fahrenheit

 

P05 Measured value correction 0 K – 3...3 K

 

P06 Standard display 0 0 = Room temperature

1 = Setpoint

 

P07 Additional display information

RDG400KN (r ange 0...4) RDG405KN (r ange 0... 4, 6,7)

0 = --- (no display) 1 = °C and °F 2 = Outside temperature (via bus) 3 = Time of day (12 h) (via bus) 4 = Time of day (24 h) (via bus) 6 = CO2 concentration [ppm] 7 = CO2 symbols

 

P08 Comfort basic setpoint 21 °C 5...40 °C

 

P09 Comfort setpoint minimum 5 °C 5...40 °C

 

P10 Comfort setpoint maximum 35 °C 5...40 °C

 

P11 Economy heating setpoint 15 °C OFF, 5...WCoolEc o;

WCoolEco = 40 °C max.

 

P12 Economy cooling setpoint 30 °C OFF, WHeatEco...40 °C;

WHeatEc o = 5C min.

 

P14 Button lock 0 0 = Unlocked

1 = Aut o lock 2 = Manual lock

 

P19 CO2 (VOC) Setpoint 1000

OFF(0)…5 000 ppm



P20 CO2 (VOC) P-band Xp 400

10…2000 ppm



Parameter display depends on selected application and function.

Note

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3.13.4 Parameters of the Expert level with diagnostics and test

Parameter

Name Factory setting Range

RDG400KN

RDG405KN

Dependen-

cies

Expert level

P30 Heat P-band Xp/switching diff 2 K 0.5…6 K

 

P31 Cool P-band Xp/switching diff 1 K 0.5…6 K

 

P32 Radiator P-band Xp/swi diff 2 K 0.5…6 K

 

Appl

P33 Dead zone Comfort mode 2 K 0.5…5 K

 

Appl

P35 Integral action time Tn

RDG400KN RDG405KN

5 min 45 min

0…10 min 0…120 min

 

P46, P47

P36 H/C ch'over swi point cooling 16 °C 10…25 °C

 

P38

P37 H/C ch'over s wi point heating 28 °C 27… 40 °C

 

P38

P38 Input X1

RDG400KN (range 0..3 [ECO]..8)

RDG405KN (range 0..3 [PROT]..10)

1: = Ext. sens or

0 = --- (no function) 1 = Room temp ext. sensor/ return air temp (AI) 2 = H/C changeover (AI/DI) 3 = Operat. mode contact [ECO], window contact [PROT] (DI)

4 = Dewpoint sensor (DI) 5 = Enable electric heater (DI) 6 = Fault input (DI) 7 = Monitoring input (Digital) 8 = Monitoring input (Temp)

10 = Presence detector (DI)

 

P39 Normal position input X1 0 (NO) 0 = N ormally open/open

1 = Normally closed/close

 

P38

P40 Input U1 0 0 = No function

1 = Input for air damper position 2 = input CO2 sensor



P42 Input D1

RDG400KN (range 0..3 [ECO]..7) RDG405KN (range 0..3 [PROT]..10)

3 = Operating mode contact (RDG400KN) Window c ontact (RDG405KN

0 = --- (no function) 2 = H/C changeover (DI) 3 = Operat. mode contact [ECO], window contact [PROT] (DI) 4 = Dewpoint sensor (DI) 5 = Enable electric heater (DI) 6 = Fault input (DI) 7 = Monitoring input (Digital) 10 = Presence detector (DI)

 

P43 Normal position input D1 0 (N.O.) 0 = Normally open/open

1 = Normally closed/close

 

P42

P44 Actuator running time Y1/Y2 150 s 20…300 s

 

P46

P46 Output Y1/Y2 On/Off (1) 0 = 3-position

1 = 2-position - ON/OFF 2 = 2-position - PW M

 

Appl

P47 Controller output VAV 0 = DC 0…10 V 0 = DC 0…10 V

1 = 3-position

 

Appl

P51 Flow temp limit floor heating Off Off, 10...50 °C

 

P38

P54 Fan overrun time 60 s 0…360 s

 

P63 Sup ply air limit value min 0% 0…P64 (%)

 

P64 Sup ply air limit value max 100% P63...100 (%)

 

P65 Protection heating setpoint 8 °C OFF, 5…W CoolProt;

WCoolProt = 40 °C max.

 

P66 Protection cooling setpoint Off OFF, WHeatProt… 40;

WHeatProt = 5°C min.

 

P68 Temporary Comfort mode 0 (= Off) 0...360 min

 

P02

P69 Temporary Comfort setpoint Off OFF = Disabled

ON = Enabled

 

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Parameter

Name Factory setting Range

RDG400KN

RDG405KN

Dependen-

cies

Expert level

P71 Restore f actory setting OFF OFF = Disabled

ON = Reload start 8888 is displayed f or 3 seconds during reload process

 

Parameter

Name Factory setting Range

RDG400KN

RDG405KN

Dependencies

Communications

P81 Device address 1) 255 1…255

 

P82 Geographic al zone (apartment) 2) --- ---, 1...126

 

P83 Geographic al zone (room) 2) 1 ---, 1...63

 

P84 Heat distr zone heating coil --- ---, 1...31

 

Appl, P01

P85 Refrig distr zone cooling coil --- ---, 1...31

 

Appl, P01

P86 Heat distr zone heating surface --- ---, 1...31

 

Appl

P87 Air distribution zone --- ---, 1...31

 

P88 Trans formati on Precomfort 0 0 = Economy

1 = Comf ort

 

P46, P47: Setting to 2-position or 3-position is made with DIP switches 4 and 5

1) Physical address = Area.Line.DeviceAddress. Factor y setting for Area = 0, Line = 2. Can be changed by special management service e.g. fr om line coupler or via ACS tool

2) Type = geographical zone A.R.S. In RDG subzone = fixed value 1

Parameter

Name Range

RDG400KN

RDG405KN

Dependencies

Diagnostics and test

d01 Application number 0 = --- (no application)

1 = Single-duct 2 = Single-duct with electric heater 3 = Single-duct with radiator 4 = Single-duct with heating/cooling coil

 

d02 X1 state --- = No function (P38 = 0)

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

 

d03 U1 status (RDG405KN)

DC 0…10V;

"---" means not available

 

d04 D1 state 0 = Not activated (for DI)

1 = Activated (DI)

00 = H/C input shorted

100 = H/C input open

 

d05 Test mode for checking the Y1/Y2 actuator's

running direction

"---" = No signal on outputs Y1 and Y2 OPE = Output Y1 forc ed opening CLO = Output Y2 forced closing

 

P46

d07 Software version Ux.xx is displayed

 

3) This parameter can only be quit when the setting is back at "---".

Press the left button to escape

Notes

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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 air flow

from a heating/cooling device, and not exposed to drip or splash water

Wiring

See Mounting Instructions M3192 [3] enclosed with the thermostat.

∂ Comply with local regulations to wire, fuse and earth the thermostat ∂ The power supply line must have an external fuse or circuit breaker with a rated

current of no more than 10 A

∂ Isolate the cables of inputs X1-M, U1-G0 and D1-GND for AC 230 V if the

conduit box carries AC 230 V mains voltage

∂ Inputs X1-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

∂ Isolate the cables of KNX communication input CE+/CE- for AC 230 V if the

conduit box carries AC 230 V mains voltage

∂ Disconnect the unit from power supply before removing it from its mounting

plate

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4.2 Commissioning

The room thermostats are delivered with a fixed set of applications.

Select and activate the required application during commissioning using one of the following tools:

– Local DIP switch and HMI – Synco ACS – ETS

(Parameter and application download with ETS 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.

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 blink, 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 set to OFF, the display reads NO APPL to indicate that application commissioning via tool is required.

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 ETS tool to the KNX bus cable at any point for commissioning:

ACS and ETS require an interface:

– RS232 KNX interface (e.g. SiemensUP146/02, UP152) – OCI702 USB-KNX interface

An external KNX bus power supply is required if an RDG.. is connected directly to a tool (ACS or ETS) via KNX interface.

Applications

DIP switches

NO APPL

Note

Connect tool

Note

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The thermostat's control parameters can be set to ensure optimum performance of the entire system (see section 3.11). The parameters can be adjusted using … – the local HMI – Synco ACS – ETS

∂ The control sequence may need to be set via P01, depending on the

application. The factory setting is as follows:

Application Factory setting P01

Single-duct, single-duct with heating/cooling coil 1 = cooling only Single-duct with electric heater, single-duct with radiator

Not adjustable

∂ 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 P05

∂ We recommend to review the setpoints and setpoint ranges (P08…P12) and

change them as needed to achieve maximum comfort and to save energy

The addressing mode helps identify the thermostat in the KNX network during commissioning. Press left and right buttons simultaneously for 6 seconds to activate addressing mode, which is indicated on the display with PrOg. Addressing mode remains active until thermostat identification is complete.

Assign the device address (P81) via HMI, ACS or ETS.

With device address set to 255, the communication is deactivated (no exchange of process data).

Use ETS to assign the KNX group addresses of the thermostat's communication objects.

Each device bears 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.

Control parameters

Control sequence

Recalibrating the sensor

Setpoint and range limitation

Addressing mode

Assigning the KNX device address

Assigning the KNX group addresses

KNX serial number

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4.3 Operation

See also Operating Instructions B3192 [2] enclosed with the thermostat.

1. Operating mode selector/Esc

2. Protection and OK

3. Rotary knob to adjust setpoints

and parameters

User action

Effect, description

Normal operation Actual operating mode and state are

indicated by symbols. Press any button (thermostat in normal operation)

Enter operating mode selection;

backlit LCD turns on, all possible mode

symbols turn on, indicator element (arrow)

appears on the current mode/state. Press left button 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. Press left button (P01 = 2) Toggle between heating and cooling. Press left button while "Operating mode" via bus is Economy or while operating mode switchover contact is activated

Activate "Extend Comfort mode"

(for details, see page 20).

Keep left button depressed and turn rotary knob clockwise/counterclockwise

Activate timer "Extend presence"/"Extend

absence" and set the time (for details, see

page 20). Press right button >3 seconds Activate/deactivate button lock. Press right button Set thermostat to Protection mode or back

to the previous operation mode. Turn rotary knob Adjust the room temperature Comfort

setpoint. Hold down both the left and right buttons simultaneously for 4 seconds. Release them, and hold the right button again within 2 seconds until the temperature disappears

Enter parameter setting mode Service level.

Hold down both the left and right buttons simultaneously for 4 seconds. Release them, and hold the left button again within 2 seconds until the temperature disappears. Turn the rotary knob counterclockwise minimum ½ rotation. Pxx displays. Continue with step 2

Enter parameter setting mode "Expert level,

diagnostics and test".

Press left and right button simultaneously for 6 seconds

Enter (KNX) programming mode.

Layout

Button operation

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232422 21

19 18 17 16

1412

Display

Symbol Description # Symbol Description

Heating mode 14 Confirmation of parameters

Heating mode, electric heater active

Primary fan is active (only supported with Synco700 primary controller)

Cooling mode 16

Degrees Celsius

Degrees Fahrenheit

Comfort 17

Digits for room temperature and setpoint display

Economy 18 Button lock active

Auto Timer mode according to schedule (via KNX)

Condensation in room (dewpoint sensor active)

View a

setAutoTim er

program

Protection mode 20

Weekday 1…7 from KNX bus 1 = Monday/7 = Sunday

Escape 21 Fault

Additional user information, like outside temperature or time of day from KNX bus; selectable via parameters

Temporary timer function; visible when operating mode is temporarily extended (extended presence or absence)

Setting the time of day and the weekday

23 Fresh air (RDG405KN)

Information 24 Indicates that room temperature is displ ayed

am/pm

ppm

am and pm: Real time clock in either 24- or 12-hour (am/pm) mode

ppm: CO2 external sensor value (RDG405KN)

RDG400KN RDG405KN

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4.4 Remote operation

The RDG.. room thermostats can be operated from a remote location using an OZW772/OZW775 web server or the ACS tool.

4.5 Disposal

In terms of disposal, the room thermostats are classified as electronic scrap conforming to the European Directive 2012/19/EU and must not be disposed of as domestic waste.

∂ Dispose of the device via the channels provided for this purpose ∂ Comply with all local and currently applicable laws and regulations

5. Supported KNX tools

5.1 ETS

ETS is an engineering tool used to fully commission the RDG4..KNX room thermostats.

ETS can implement the following functions: – Defining and downloading the physical address – Defining and downloading the application (plant type, control sequence) – Setting up and downloading the thermostat's control parameters – Setting up and downloading group addresses

This Basic Documentation does not describe how to operate the ETS tool and commission a device. Refer to the KNX Manual for more details.

Setting RDG..KNX parameters is only supported by ETS4 or higher!

To start KNX programming, press left and right button simultaneously for at least 6 seconds.

5.1.1 Parameter settings in ETS

1. Open the project in ETS and select a device.

2. Click Parameters tab, and adjust the control parameters as follows:

3. The Plant type (application), Control Sequence and other control parameters ([Pxx] description) can be downloaded.

ETS

STOP

Note

Addressing mode

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ETS 4 or higher version is used to download the application and parameters

IAQ control (RDG405KN only)

1. Select if the CO2 (or VOC) sensor is to transmit (DC input) or receive from another KNX device.

2. Set the setpoint and the P-band (Xp)

Object 44 can be used to transmit or receive the IAQ value.

5.2 ACS790

With the ACS790 tool, the RDG..KNX room thermostats can be commissioned (physical address, application, parameters). They can be operated or monitored via bus during normal operation.

This Basic Documentation not describe how the physical address is defined. Also, it only gives a brief overview of the main functionality of the ACS tool. For more information, refer to ACS online help.

Setting RDG..KNX parameters is only supported by ACS version 5.11 or higher!

5.2.1 Parameter settings in ACS

In the ACS tool, select Plant, then Open to open the plant. To start the parameter settings, select Applications, then Parameter settings…:

Notes

ACS

STOP

Note

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The application and control parameters can be adjusted and downloaded. Column Line no. contains the parameter number as shown in the parameter table (see section 3.11).

5.2.2 Operation and monitoring with ACS

In the ACS tool, select Plant, then Open to open the plant.

To start monitoring and operation, select Applications, then Plant operation –

Standard popcard

ACS

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The ACS tool supports parameter settings even during normal operation.

To change a control parameter, select Applications, then Plant operation.

∂ Make sure you have logged on with sufficient access right ∂ Only control parameter can be changed, no application!

Parameter settings in ACS

Notes

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The ACS tool offers plant diagrams for easy monitoring and operation of the thermostat. To start this application, select Standard diagram.

The ACS tool provides standard plant diagrams for RDG..KNX room thermostats, which depend on the configuration as follows:

Plant diagram in ACS

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Plant type

Application

Single-duct

Single-duct with electric heater

Single-duct with radiator

Single-duct with heating/ cooling coil

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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 smartphone 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, refer to Commissioning Instructions CE1C5701.

6. Connection

6.1 Connection terminals

SELV

G X1M

3192 A01

CE+ CE

D1 GND

Y2Y10

G, G0 Operating voltage AC 24 V Y10-G0 Control output for DC 0…10 V actuator Y1-G, Y2-G Control outputs for 2-position, PWM or 3-position

actuators

X1 Multifunctional input for temperature sensor (e.g.

QAH11.1) or potential-free switch Factory setting: External temperature sensor

(function can be selected via P38) M Measuring neutral for sensors and switches U1 DC 0…10 V input for actual air damper position DC 0…10 V input for CO2 sensor (0…2000 ppm)

(RDG405KN)

(Note: G0 is the measuring neutral for U1!) D1-GND Multifunctional input for potential-free switch.

Factory setting: Operating mode switchover contact

(function can be selected via P42) CE+ KNX data + CE- KNX data –

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6.2 Connection diagrams

Application

N1 Room thermostat RDG4..KN V1 Damper actuator or VAV compact controller:

DC 0…10 V or 3-position, VAV compact controller KNX

V2 Electric heater, radiator

or heating/cooling valve:

DC 0…10 V, 2-position, PWM or 3-position S1 Switch (keycard, window contact, etc.) U1 DC 0…10 V input feedback signal for current

air damper position

DC 0…10 V input for CO

/VOC sensor

(0…2000 ppm) (RDG405KN) S3 Switch at SELV input

(keycard, window contact) B1 Temperature sensor (return air temperature,

external room temperature, changeover

sensor, etc.) B2 CO2 sensor (0…2000 ppm) (RDG405KN) CE+ KNX data + CE- KNX data –

Single-duct

Single-duct with electric heater, radiator or heating/cooling valve

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.

4. Operating mode selector/Esc

For operation, refer to section 4.3.

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7.2 Dimensions

Dimensions in mm

128.0

93.0

28.2

27.8

28.5

16.0

9.0

28.3

27.7

28.3

4.0

30.8

28.3

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8. Technical data

Operating voltage SELV AC 24 V °20% Rated voltage AC 24 V Frequency 50/60 Hz Power consumption Max. 2 VA/1 W

internal fuse!

In all cases, external preliminary protection with a circuit breaker max. C 10 A is required. Control output Y10-G0

Resolution Current

DC 0…10 V 39 mV Max. ° 1 mA

Control output Y1, Y2-G

Rating

AC 24 V Max. 1 A

Power limitation

3 A fast microfuse (cannot be exchanged)

Multifunctional inputs

X1-M

Temperature sensor input

Type Temperature range Cable length

Digital input

Operating action Contact sensing Parallel connection of several thermostats for one switch

U1-G0

Input for actual air damper position

feedback

damper position 0%(fully closed)

100% (fully open)

Input for external CO2/VOC sensor

(RDG405KN)

D1-GND

Operating action Contact sensing Parallel connection of several thermostats for one switch

QAH11.1 (NTC)

0...49 °C (32…120 ˚F) Max. 80 m

Selectable (NO/NC) DC 0…5 V, max. 5 mA Max. 20 thermostats per switch. Do not mix with D1!

DC 0…10 V, max. 0.3 mA 0…100%

DC 0…10 V, max. 0.3 mA 0… 2000 ppm Selectable (NO/NC) SELV DC 6…15 V, 3…6 mA Max. 20 thermostats per switch. Do not mix with X1!

Function of inputs

External temperature sensor, heating/cooling changeover sensor, operating mode switchover contact, dewpoint monitor contact, enable electric heater contact, fault contact, monitoring input

Selectable

X1: P38 D1: P42

Interface type KNX, TP1-64

(galvanically separated) Bus current 20 mA Bus topology: Refer to KNX Manual (see reference documentation) Switching differential (adjustable)

Heating mode (P30) Cooling mode (P31)

2 K (0.5...6 K) 1 K (0.5...6 K)

Setpoint setting and setpoint range

Comfort (P08)

21 °C (70 ˚F) (5…40 °C) (41…104

Power supply

Outputs

Inputs

KNX bus

Operational data

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Economy (P11-P12)

Protection (P65-P66)

˚F) 15 °C/30 °C (59˚F/86 ˚F) (OFF, 5…40 °C)

8 °C/OFF (OFF, 5…40 °C)

Multifunctional inputs X1-D1

Input X1 default value (P38)

Input D1 default value (P42)

Selectable (0...8) 1 (ext. temperature sensor, room or return air) 3 (operating mode switchover)

Built-in room temperature sensor

Measuring range Accuracy at 25 °C (after calibration via P05) Temperature calibration range

0…49 °C (32…120 ˚F) < ± 0.5 K ± 3.0 K

Settings and display resolution

Setpoints Current temperature value displayed

0.5 °C (33 ˚F)

Operation

Climatic conditions Temperature Humidity

IEC 721-3-3 Class 3K5

0...50 °C (32…122 ˚F) <95% r.h.

Transport

Climatic conditions Temperature Humidity Mechanical conditions

IEC 721-3-2 Class 2K3 , 25... 60 °C (-77…140 ˚F) <95% r.h. Class 2M2

Storage

Climatic conditions Temperature Humidity

IEC 721-3-1 Class 1K3 , 25... 60 °C (-77…140 ˚F) <95% r.h.

conformity to EMC directive

CE1T3192xx *)

RCM conformity

CE1T3192en_C1

Safety class III as per EN 60730 Pollution class Normal Degree of protection of housing IP30 as per EN 60529

Connection terminals Solid wires or stranded wires

with

ferrules

1 x 0.4…2.5 mm

or 2 x 0.4…1.5 mm

Housing front color RAL 9003 white Weight without/with packaging 0.237 kg/0.360 kg

Environmental conditions

Standards and directives

General

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Index

3-position control signal ...................................... 47

3-position for air flow ........................................... 47

Absence ............................................................. 20

ACS .................................................................... 76

Addressing mode .......................................... 72, 75

Air demand ......................................................... 58

Air heating/cooling changeover ........................... 31

Applications overview ......................................... 29

Automatic heating/cooling changeover .......... 31, 33

Automatic heating/cooling changeover via bus .... 31

Bus - set operating modes .................................. 21

Bus - setting and adjusting setpoints ................... 27

Bus power supply ............................................... 71

Button lock .......................................................... 33

Cable length for sensors ..................................... 52

Changeover switch ............................................. 31

Changeover via KNX .................................... 31, 51

Commissioning ...................... 18, 27, 29, 59, 65, 71

Communication objects ................................. 53, 61

Communication objects LTE ................................ 64

Connecting a KNX tool ........................................ 66

Control output VAV .............................................. 58

Control outputs configuration .............................. 50

Control outputs overview ..................................... 47

Control parameters ............................................. 65

Control sequences .............................................. 33

Cooling demand.................................................. 58

Cooling sequence ............................................... 33

DC 0…10 V control signal ................................... 47

DC 0…10 V for air flow ....................................... 47

DC 0…10 V for electric heaters ........................... 48

Desigo ................................................................ 10

Dewpoint monitoring ..................................... 32, 51

Digital input ......................................................... 51

DIP switches ...................................... 29, 47, 50, 71

Disposal ............................................................. 75

Download via tool ............................................... 66

Effect of Protection via time schedule .................. 19

Electric heater ..................................................... 38

Enable/disable electric heater ........................ 38, 52

Expert level parameters .......................................65

Extension of presence/absence ...........................20

External sensors..................................................46

External/return air temperature ...................... 51, 53

External/return air temperature sensor .................32

Extract air ............................................................30

Fan (primary)........................................... 38, 52, 58

Fan overrun time .................................................38

Fault ....................................................................52

Fault on KNX .......................................................59

Fault, handling .....................................................53

Floor temperature limitation function ....................32

Geographical zone ..............................................55

Heartbeat ............................................................57

Heating demand ..................................................58

Heating sequence ...............................................33

Heating/cooling changeover ................................51

IAQ .....................................................................14

Integral action time ..............................................13

Integration via KNX .............................................. 9

KNX addressing ..................................................72

KNX bus power supply ........................................71

KNX functions ...................................................... 9

KNX LTE-Mode ...................................................53

KNX overview.................................................. 6, 53

KNX parametersl .................................................75

KNX serial number ..............................................72

KNX S-Mode .......................................................53

LTE-Mode ...........................................................53

Manually select heating or cooling sequence .......33

Monitoring with ACS ............................................77

Monitoring with OZW772 .....................................81

Mounting and installation .....................................70

Multifunctional inputs ...........................................51

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On/Off control signal ........................................... 47

Operating mode

Priority intervention .......................................... 18

Operating mode - setting via bus ......................... 21

Operating mode button ....................................... 19

Operating mode switchover ................................. 51

Operation with ACS............................................. 77

Operation with OZW772 ...................................... 81

OZW772 ............................................................. 81

Parallel connection of switches ........................... 52

Parameter setting ............................................... 65

Parameter setting via tool.................................... 66

Parameter settings in ACS ............................ 76, 78

Parameter settings in ETS .................................. 75

Precomfort .......................................................... 19

Presence ............................................................ 20

Presence detector ............................................... 20

Primary fan ............................................. 38, 52, 58

Proportional band ............................................... 13

Protection mode/standby .................................... 17

PWM .................................................................. 47

PWM for electric heaters ..................................... 49

Radiator .............................................................. 41

Remote heating/cooling changeover ................... 31

Remote operation ............................................... 81

Reset parameters ............................................... 65

Sensor input .................................................. 51, 53

Setpoint Comfort mode ....................................... 45

Setpoint Economy mode ..................................... 45

Setpoint limitation ............................................... 25

Setpoint Protection mode ................................... 45

Setpoints - setting via bus ................................... 27

Setpoints and sequences ................................... 45

S-Mode .............................................................. 53

Standby/Protection mode ................................... 17

Supply air temperature ....................................... 31

Supply and extract air ......................................... 30

Switching differential ........................................... 13

Synchronization ............................................. 47, 49

Synco 700, Synco living ........................................ 9

Temperature out of range ................................... 53

Temporary setpoint ............................................. 25

Time of day via KNX ........................................... 14

Time schedule change mode .............................. 19

Tool - Parameter setting and download ............... 66

VAV changeover ................................................. 31

VAV changeover via bus ..................................... 33

Window state ........................................... 17, 18, 51

Siemens Switzerland Ltd. Building Tec hnologies Division International Headquarters Gubelstrasse 22 CH-6301 Zug Tel. +41 41-724 24 24

www.buildingtechnologies.siemens.c om

Subject to change

Siemens RDG400KN, RGD405KN Basic Documentation

Specifications and Main Features

Frequently Asked Questions

User Manual