Siemens RDG110, RDG100T/H, RDG140, RDG100, RDG100T Application Manual

RDG/RDF – room thermostats

Application Guide

Answers for infrastructure.Answers for infrastructure.

Application overview

2-pipe

2-stage
heating
or cooling

Single duct

Single duct
with el. heater

2-pipe
el. heater or
radiator

Fan coil unit

Variable air volume
(VAV)

4-pipe with
el. heater

Chilled/
heated ceiling

Chilled/heated
ceiling with
el. heater

Chilled/heated
ceiling and
radiator

Universal

Chilled
ceiling
and radiator

Compressor
for heating
or cooling

Heat pumps

Compressor
with el. heater

Single duct
and radiator

2

Single
duct with
heat/cool coil

2-stage
compressor
for heating
or cooling

Compressor
for heating
and cooling

Contents

Introduction ................................................................................................................ 4

Before you start .........................................................................................................4

Description of RDG range ........................................................................................... 4

Product range RDG .................................................................................................... 4

Description of RDF.. semi fl ush-mount range ............................................................... 5

Product range RDF/RDU stand-alone ...........................................................................5

Product range RDF/RDU stand-alone with time program ..............................................5

Product range RDF/RDU with bus interface ..................................................................5

Description of applications ........................................................................................6

Extensive features and functions ............................................................................... 7

Fan coil – application overview ...................................................................................8

Fan coil – product overview ........................................................................................10

Universal – application overview ............................................................................ 12

Universal – product overview ................................................................................14

Heat pumps – application overview ..........................................................................15

Heat pumps – product overview ............................................................................... 16

VAV – application overview ...................................................................................... 18

VAV – product overview ........................................................................................... 19

How to prepare and set up your room thermostats ...................................................20

Introduction ...........................................................................................................20

Control parameters ................................................................................................. 20

Installation and set up .............................................................................................20

Application-specifi c parameters ................................................................................21

Communicating, KNX thermostats ...........................................................................22

Suggestions for energy saving ............................................................................... 22

FAQ ........................................................................................................................23

Reference to the basic documentation ......................................................................23

Application examples ..............................................................................................24

3

Introduction

The RDG and RDF thermostat range is very versatile and includes a number of products.
RDG and RDF offer extensive features and cover a broad range of applications.

The document:
– provides you an overview of the new RDG and RDF ranges
– assists you in selecting the suitable product and
– provides helpful installation and commissioning information

The section “application overview” for each main application – i.e. fan coil unit
(FCU, universal, heat pumps and VAV – shows what applications are covered by
which thermostat line.
The sections “product overview” show the available thermostat variants and their
supported applications.

Before you start

We recommend proceeding as follows prior to selecting a thermostat:
– Type of main application: FCU, universal, heat pump or VAV
– Application: e.g. 2-pipe with electric heater
– Type of control output 1: ON/OFF, PWM, 3-position, or DC 0...10 V
– Type of control output 2: ON/OFF, PWM, 3-position, or DC 0…10 V
– Type of inputs: e.g. external room temperature sensor, changeover sensor,

keycard contact etc.
– Type of thermostat: stand-alone, stand-alone with 7-day timer, or communicating
thermostat
– Thermostat design: wall- or semi fl ush-mounted
– Other important requirements

Description of RDG range

The RDG is a compact, wall-mounted version with an elegant and modern design.

The product consists of 2 lines of versatile products – RDG100 and RDG400:
– RDG100 line for FCUs plus universal (e.g. chilled ceilings or radiators)

and heat pump applications
– RDG400 line for VAV applications

The thermostats are available as stand-alone versions, stand-alone with 7-day program
and KNX versions tailored for use with Synco 700 via LTE-mode, for integration in Synco
living or BACS (Building Automation and Control System) via S-mode.

Product range RDG

– RDG100 – the versatile stand-alone thermostat with ON/OFF and modulating

(PWM or 3-position) outputs
– RDG100T – the versatile stand-alone thermostat with 7-day program and same

functionality as RDG100, plus infrared receiver for remote control
– RDG100T/H – the versatile stand-alone thermostat is the landscape version of RDG100T,

the 7-day program can be disabled
– RDG100KN – the versatile communicating thermostat with the same functionality as

RDG100, plus KNX interface
– RDG110 – the robust stand-alone thermostat with relay outputs (SPDT) for applications

with max. 5 A current on the control outputs. This thermostat is the ideal solution for

ON/OFF applications with electric heater, heat pumps, or heat pumps with reversing

valve (RV).
– RDG140 – the modulating thermostat operating on AC 24 V (SELV) with DC 0…10 V

control outputs

4

– RDG160 – the energy-effi cient modulating thermostat to control electronic

commutated fan motors (ECM Fans), operating on AC 24 V (SELV) with DC 0...10 V

outputs for valve and fan
– RDG160KN – the communicating energy-effi cient modulating thermostat for control-

ling electronic commutated fan motors (EC Fans) and either DC or 2-position valves, or

for 3-speed fan and DC valves, including KNX interface
– RDG400 – the versatile stand-alone thermostat for VAV applications with modulating
and ON/OFF outputs
– RDG400KN – the versatile communicating thermostat with the same functionality as

RDG400, plus KNX interface

A number of control parameters can be adjusted on each thermostat to optimize the
control performance.

Description of RDF semi fl ush-mount range

The RDF.. range is a compact semi fl ush mount solution. The RDF6.. line fi ts
into round conduit boxes with a 60 mm diameter and a minimum 40 mm of depth. The
RDF3.. and RDF4.. lines are designed to fi t into conduit boxes with fi xing center 60.3 mm
(British standard BS4662).

The RDF and RDU are two product ranges featuring versatile and slim products:
– RDF range for FCUs and heat pump applications
– RDU range for VAV applications

The thermostats are available as stand-alone, stand-alone with 7-day program and KNX
versions tailored for use with Synco 700 via LTE-mode, for Synco living or for integration in
BACS via S-mode. There is also a version available with ModBus interface.

Product range RDF/RDU stand-alone

– RDF300 – the versatile stand-alone thermostat with ON/OFF or modulating 3-position

outputs
– RDF300.02 – also includes backlit display
– RDF340 – modulating thermostat operating on AC 24 V (SELV) with DC 0…10 V

control outputs
– RDF310.2 – basic stand-alone thermostat for 2-pipe applications
– RDF310.21– also offers a backlit display and infrared receiver for remote control
– RDF600 – versatile stand-alone thermostat for use with round conduit boxes

conforming to CEE/VDE with the same functionality as RDF300.02
– RDU340 – the versatile stand-alone thermostat for VAV applications with modulating

DC 0…10 V and ON/OFF outputs

RDF product range, stand-alone with time program

– RDF600T – the versatile stand-alone thermostat with 7-day program and same
functionality as RDF600, plus infrared receiver for remote control and backlit digital
display for use with round conduit boxes conforming to CEE/VDE
– RDF410.21 – basic stand-alone thermostat for 2-pipe applications, with 7-day program,

backlit digital display and infrared receiver for remote control

Product range RDF/RDU with bus interface

– RDF301 – communicating thermostat with the same functionality as RDF300,

plus KNX interface and backlit display
– RDF301.50 – communicating thermostat with the same functionality as RDF301,

plus switching groups for lighting and blind control via KNX S-mode
– RDF600KN – communicating thermostat for use with round conduit boxes

conforming to CEE/VDE with the same functionality as RDF301
– RDF302 – communicating thermostat with the same functionality as RDF300,
including ModBus interface
– RDU341 – communicating thermostat with the same functionality as RDU340,

plus KNX interface

5

Description of applications

The RDG/RDF thermostats cover the following applications:

FCUs via ON/OFF or modulating control outputs:
– 2-pipe system
– 2-pipe system with electric heater
– 2-pipe system and radiator/fl oor heating

1

– 4-pipe system
– 4-pipe system with electric heater
– 2-stage heating or cooling system

1

1

VAV systems via ON/OFF or modulating control outputs:
– Single-duct system
– Single-duct system with electric heater
– Single-duct system and radiator/fl oor heating
– Single-duct system with heating/cooling coil

1

1

Chilled/heated ceilings (or radiators) via ON/OFF or modulating control outputs:
– Chilled/heated ceiling
– Chilled/heated ceiling with electric heater
– Chilled/heated ceiling and radiator/fl oor heating
– Chilled/heated ceiling, 2-stage heating or cooling

6

1

1

Heat pumps with DX type equipment:
– 1-stage compressor for heating or cooling
– 1-stage compressor for heating or cooling with electric heater
– 1-stage compressor for heating or cooling and radiator/fl oor heating
– 1-stage compressor for heating and cooling with reversing valve
– 2-stage compressor for heating or cooling

1

1

1

The RDG/RDF offer extensive features and functions

2

– Operating mode: Comfort, Economy and Protection
– Energy saving functions: external operating mode switchover, 7-day program,

keycard or window contact, minimum and maximum setpoint limitation, etc.
– Numerous applications selectable via DIP switch
– Heating/cooling changeover: automatic or manual
– Control output signals: ON/OFF (triac or relay), PWM, 3-position and DC 0...10 V

3

– Fan control: automatic or manual fan speed for 1-speed, 3-speed or ECM

fan
– Fan operation: fan enable, heating only, cooling only, fan disable
– Multifunctional inputs: (function selectable)
– External temperature sensor
– Heating/cooling changeover sensor or switch
– Operating mode switchover for keycard, window or time switch contact
– Electric heater release
– Dew point monitor
– Fault input
– 7-day program
– Timer for prolonged presence and absence function
– Button lock
– Backlit display
– Infrared remote control
– Reminder for cleaning fan fi lter
– Floor temperature limitation function
– Various parameters for setpoint adjustment and control setting
– KNX communication interface: Synco700 via LTE mode,

Synco living and BACS (Building Automation and Control System) via S-mode
– Switching groups for lighting and blind control via KNX S-mode
– ModBus communication interface

1

Applications covered by RDG thermostats only

2

Feature availability depends on thermostat type

3

Electronic commutated motor, DC 0...10 V

7

Application description

– Control sequences for heating and/or cooling,

1 or 2 stages

– Multifunctional inputs for keycard contact,

external sensor, etc.
– Automatic or manual heating/cooling changeover
– Automatic or manual fan speed
– 3-speed, 1-speed and mod. (ECM) fan control

(DC 0...10 V)
– Fan operation selectable in heating and cooling

mode (enable, disable, heating only or cooling only)

Fan coil – application overview

Application

2-pipe system

2-pipe system with el. heater

YE

B2

T

Y1

3076S02

T

(B1)

M1

T

(B1)

Type of control outputs

2-pipe (ON/OFF) RDG100.. RDG110 RDF300.. RDF310..

2-pipe mod. (PWM) RDG100..

2-pipe mod. (3-pos.) RDG100.. RDF300.. RDF600..

2-pipe mod. (DC 0...10 V) RDG140 RDG160KN RDF340

2-pipe mod. (DC 0...10 V) ECM fan control (DC 0...10 V) RDG160..

2-pipe (ON/OFF) ECM fan control (DC 0...10 V) RDG160KN

2-pipe (ON/OFF), with el. heater (ON/OFF) RDG100.. RDG110 RDF300.. RDF600..

2-pipe (ON/OFF), with el. heater (mod. PWM or 3-pos.) RDG100..

2-pipe mod. (PWM), with el. heater (ON/OFF, PWM or 3-pos.) RDG100..

2-pipe mod. (3-pos.), with el. heater (ON/OFF, PWM or 3-pos.) RDG100..

2-pipe mod. (DC 0...10 V), with el. heater (DC 0...10 V) RDG140 RDG160KN RDF340

2-pipe mod. (ON/OFF, DC 0...10 V), with el. heater
(ON/OFF, DC 0...10 V).
ECM fan control (DC 0...10 V)

RDG..

Wall-mounted range

RDG160..

Semi fl ush-mounted range

RDF..

RDF600.. RDF410..

8

Application

2-pipe system and radiator heating

4-pipe system

Type of control outputs

RDG..

Wall-mounted range

Semi fl ush-mounted range

2-pipe (ON/OFF) and radiator (ON/OFF) RDG100.. RDG110

2-pipe (ON/OFF) and radiator (mod. PWM or 3-pos.) RDG100..

2-pipe mod. (PWM) and radiator (ON/OFF, PWM or 3-pos.) RDG100..

2-pipe mod. (3-pos.) and radiator (ON/OFF, PWM or 3-pos.) RDG100..

2-pipe mod. (DC 0...10 V) and radiator (DC 0...10 V) RDG140 RDG160KN

2-pipe mod. (ON/OFF, DC 0...10 V) and radiator

RDG160..
(ON/OFF, DC 0...10 V).
ECM fan control (DC 0...10 V)

4-pipe (ON/OFF) RDG100.. RDG110

RDF300.. RDF600..

4-pipe mod. (PWM) RDG100..

4-pipe mod. (3-pos.) RDG100..

4-pipe mod. (DC 0...10 V) RDG140 RDG160KN RDF340

4-pipe mod. (ON/OFF, DC 0...10 V).

RDG160..
ECM fan control (DC 0...10 V)

RDF..

4-pipe system with el. heater

YE

B2

Y2

Y1

3076S05

T

(B1)

M1

T

(B1)

2-stage, heating or cooling

4-pipe (ON/OFF) with el. heater (ON/OFF) RDG100..

4-pipe (ON/OFF and 3-pos.) with el. heater (ON/OFF) RDG100..

4-pipe mod. (PWM) with el. heater (ON/OFF) RDG100..

4-pipe mod. (PWM and 3-pos.) with el. heater (ON/OFF) RDG100..

2-stage (ON/OFF) heating or cooling RDG100.. RDG110

2-stage mod. (PWM) heating or cooling RDG100..

2-stage mod. (3-pos.) RDG100..

2-stage mod. (DC 0...10 V) RDG140 RDG160KN

2-stage mod. (ON/OFF, DC 0...10 V).

RDG160..
ECM fan control (ON/OFF, DC 0...10 V)

Abbreviations

ON/OFF: 2-position control
3-pos.: Modulating 3-position control signal
PWM: Pulse Width Modulation control signal
DC 0...10 V: Modulating DC 0...10 V control signal

ECM fan: Electronic Commutated Motor for fan, DC 0...10 V
el. heater: Electric heater
mod. output: Modulating output

9