Siemens RDG400 User Manual

s

Room Thermostat with Display, for VAV RDG400

Basic Documentation

Edition: 1.0

CE1P3182en

28 May 2009

Building Technologies

Table of contents
1	About this document .........................................................................................	3
1.1	Revision history....................................................................................................	3
1.2	Reference documents ..........................................................................................	3
1.3	Before you start....................................................................................................	3
1.3.1	Copyright..............................................................................................................	3
1.3.2	Quality assurance ................................................................................................	3
1.3.3	Document use / request to the reader..................................................................	4
2	Summary.............................................................................................................	5
2.1	Brief description ...................................................................................................	5
2.2	Types and features...............................................................................................	5
2.3	Equipment combinations......................................................................................	6
2.4	Accessories..........................................................................................................	7
2.5	Ordering ...............................................................................................................	7
3	Use ......................................................................................................................	7
4	Functions............................................................................................................	8
4.1	Temperature control .............................................................................................	8
4.2	Operating modes..................................................................................................	9
4.3	Setpoints ............................................................................................................	10
4.4	Setpoints and sequence......................................................................................	11
4.5	Applications overview.........................................................................................	13
4.6	Additional features .............................................................................................	14
4.7	Control sequences .............................................................................................	17
4.7.1	Applications and sequences...............................................................................	17
4.7.2	Sequences overview (setting via parameter P01) ..............................................	17
4.7.3	Control outputs overview (setting via DIP 4 / 5 and parameters P46 / P47).....	18
4.7.4	Single duct .........................................................................................................	19
4.7.5	Single duct with electrical heater........................................................................	20
4.7.6	Single duct with radiator or floor heating ............................................................	21
4.7.7	Single duct with heating / cooling coil.................................................................	22
4.8	Control outputs...................................................................................................	23
4.8.1	Control output for air flow ...................................................................................	23
4.8.2	Control output for electrical heater, radiator and heating / cooling coil ...............	24
4.9	Multifunctional input, Digital input.......................................................................	26
4.10	Handling of faults ...............................................................................................	27
4.11	DIP switches ......................................................................................................	27
4.12	Control parameters.............................................................................................	28
4.12.1	Parameters Service level ...................................................................................	29
4.12.2	Parameters Expert level, diagnostics & test.......................................................	30
5	Handling............................................................................................................	32
5.1	Mounting and installation....................................................................................	32
5.2	Operation ...........................................................................................................	33
5.3	Disposal .............................................................................................................	34
6	Engineering ......................................................................................................	35
6.1	Connection terminals .........................................................................................	35
6.2	Connection diagrams .........................................................................................	36
7	Mechanical design ...........................................................................................	37
7.1	General ..............................................................................................................	37
7.2	Dimensions ........................................................................................................	37
8	Technical data...................................................................................................	38
Index	...........................................................................................................................	40

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Siemens	RDG100, RDG100T, RDG110, RDG140, RDG160 Basic Documentation	CE1P3182en
Building Technologies	Table of contents	28 May 2009

		1	About this document
		1.1	Revision history
Edition	Date	Changes		Section	Pages
1.0	May 2009	First edition

1.2Reference documents

Ref.	Document title	Type of document	Document No.
[1]	Wall-mounted room thermostat with LCD	Data sheet	CE1N3182en
[2]	RDG400	Operating Instructions	CE1B3182en
[3]	RDG400	Mounting Instructions	CE1M3182en

1.3Before you start

1.3.1Copyright

This document may be duplicated and distributed only with the express permission of Siemens, and may be passed only to authorized persons or companies with the required technical knowledge.

1.3.2Quality assurance

These documents were prepared with great care.

•The contents of all documents are checked at regular intervals.

•Any corrections necessary are included in subsequent versions.

•Documents are automatically amended as a consequence of modifications and corrections to the products described.

Please make sure that you are aware of the latest document revision date.

If you find lack of clarity while using this document, or if you have any criticisms or suggestions, please contact the product manager in your nearest branch office. The addresses of the Siemens regional companies are available at www.buildingtechnologies.siemens.com.

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1.3.3Document 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 [e-mail] if there is no local point of contact

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

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	2	Summary
	2.1	Brief description
Applications	• Single-duct system
	• Single-duct system with electrical heater
	• Single-duct system and radiator / floor heating
	• Single-duct system with heating / cooling coil
Features	• Two multifunctional inputs and one digital input for keycard contact, external
	sensor, etc.
	• Operating modes: Comfort, Energy Saving and Protection
	• Automatic or manual heating/cooling changeover
	• Adjustable commissioning and control parameters
	• Minimum and maximum setpoint limitation
	• Backlit LCD
	• AC 24 V operating voltage
	• Modulating PI / P control
	• Output DC 0 … 10 V
	• Output signal inversion as an option
	• Output on/off, PWM or 3-position control
	• Adjustable minimum and maximum limitation of air flow output signal
	• Maintain room temperature via built-in temperature sensor or external room
	temperature / return air temperature sensor
	• Automatic or manual changeover between heating and cooling mode
	• Select applications via DIP switches
	• Select operating mode via the operating mode button on the thermostat
	• Display current room temperature or setpoint in °C and/or °F
	• Minimum and maximum setpoint limitation
	• Button lock (automatic and manual)
	• One digital input, freely selectable for:
	–	Operating mode switchover contact (key card)
	–	Automatic heating/cooling changeover contact
	–	Electrical heater enable
	–	Fault input
	• Two multifunctional inputs, freely selectable for:
	–	Operating mode switchover contact (key card)
	–	Automatic heating/cooling changeover sensor
	–	External room temperature or return air temperature
	–	Dewpoint sensor
	–	Electrical heater enable
	–	Fault input
	• Floor heating temperature limit
	• Reload factory settings for commissioning and control parameters

2.2Types and features

	Product no.	Operating voltage	Number of control outputs					LCD backlight
			ON/OFF	PWM	3-pos	DC 0 … 10 V
	RDG400	AC 24 V	1 1)	1 1)	1 1)		1
	1) Either ON/OFF, 3-position or PWM (triac outputs)
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Building Technologies	Summary							28 May 2009

	2.3		Equipment combinations
		Description					Product no.			Data
										Sheet
		Cable temperature sensor					QAH11.1		1840
		Room temperature sensor					QAA32		1747
		Condensation detector / extension					QXA2000 /		1542
		module					AQX2000
DC 0..10 V actuator		Electrical actuator, DC 0..10 V					SSA61...		4893
		(for radiator valve)
		Electrical actuator, DC 0..10 V					SSC61…		4895
		(for 2 and 3 port valves / V…P45)
		Electrical actuator, DC 0..10 V					SSP61…		4864
		(for small valve 2,5 mm)
		Electrical actuator, DC 0..10 V					SSB61...		4891
		(for small valves 5.5 mm)
		Electrical actuator, DC 0..10 V					SSD61...		4861
		(for Combi-valve VPI45)
		Thermal actuator, DC 0..10 V							4880
		(for small valves and radiator					STS61
		valves)
							GQD161…		4605
							GDB161…		4634
							GLB161…
		DC 0…10 V damper actuator					GMA161…		4614
							GEB161…		4621
							GCA161…		4613
							GBB161…		4626
							GIB161…
		VAV compact controller					GDB181.1E/3		3544
							GLB181.1E/3
ON/OFF actuators
		Electromotoric ON/OFF valve and
AC 24 V		actuator					MVI…/MXI…		4867
		(only available in AP, UAE, SA and IN)
		Electromotoric ON/OFF actuator					SFA71...		4863
		Thermal actuator (for radiator valve)					STA71...		4877
		Thermal actuator					STP71...		4878
		(for small valves 2.5 mm)

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3-position actuators		Electrical actuator, 3-position
AC 24 V		(for radiator valve)
		Electrical actuator, 3-position
		(for small valve 2,5 mm)
		Electrical actuator, 3-position
		(for small valve 5,5 mm)
		Electrical actuator, 3-position
		(for Combi-valve VPI45)
		Electromotoric actuator, 3-position
		(for valves 5.5 mm)

SSA81... 4893

SSP81… 4864

SSB81... 4891

SSD81... 4861

SQS85… 4573

2.4		Accessories
	Description			Product no.	Data Sheet
	Changeover mounting kit (50 pcs / package)			ARG86.3	1840
	Adapter plate 120 x 120 mm for 4“ x 4“ conduit			ARG70
	boxes
	Adapter plate 112 x 130 mm for surface wiring			ARG70.2

2.5Ordering

When ordering, please indicate product no. and description:

E.g. RDG400 room thermostat

Order valve actuators separately.

3 Use

The room thermostat is designed for the following types of system:

VAV systems via ON/OFF or modulating control outputs:

•Single-duct system

•Single-duct system with electrical heater

•Single-duct system and radiator / floor heating

•Single-duct system with heating / cooling coil

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4 Functions

4.1Temperature control

General note	Setting of the control parameters (P01 etc., mentioned throughout the document) is
	described in section 4.12.

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 issuing actuator control commands to heating and/or cooling equipment. The following control outputs are available:

•Modulating PI / P control with DC 0 … 10 V control output

•Modulating PI / P control with 3-position control output

•Modulating PI / P control with PWM output

•On/off control (2-position)

The switching differential or proportional band is 2 K for heating and 1 K for cooling

(adjustable via parameters P30 and P31).

The integral action time for continuous PI control is 5 minutes (adjustable via

parameter P35).

Display

The display shows the acquired room temperature or the Comfort setpoint, selecta-

ble via parameter P06. The factory setting displays the current room temperature.

Use parameter P04 to display the room temperature or setpoint in °F rather than

°C as needed.

/

If the thermostat is used in a system with manual heating/cooling changeover

(P01=2), the heating and cooling

symbols on the display show the terminal

unit status. Thus, the symbols are displayed even when the thermostat operates in

the neutral zone. For all other cases, the heating and cooling

symbols are

displayed when the heating or cooling output is energized.

Concurrent display of

Concurrent display of the current temperature or setpoint in °C and in °F

°C and °F

(parameter P07) is possible.

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Comfort mode

Energy Saving

Note

Protection mode

4.2Operating modes

Select the thermostat's operating mode via operating mode button on the thermostat or operating mode input (e.g. keycard occupancy sensor, when X1, X2, or D1 set to 3 (P38, P40, P42). A corresponding setpoint is used to maintain the room temperature at the desired level depending on the active operating mode. The following operating modes are available:

In Comfort mode, the thermostat maintains the setpoint which can be adjusted via the rotary knob. The fan can be set to automatic or manual fan speed: Low, medium or high.

Energy Saving mode helps save energy. Select it by pressing the operating mode button if parameter P02 is set accordingly, or if the external operating mode switchover contact is active (e.g. window contact).

If the external operating mode switchover contact is active, user operations are ineffective and “OFF” is displayed. Control will then be according to Energy Saving setpoints (P11 and P12).

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)

Operating mode button The behavior of the operating mode button can be selected via parameter P02:

#	Sequence	Remark
1		Factory setting
2

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	4.3	Setpoints
Comfort mode	The setpoint in Comfort mode can be adjusted via the rotary knob.
Setpoint limitation	For Energy Saving purposes, the setpoint adjusting range can be limited to
	minimum (P09) and maximum (P10).
P09 < P10	• If the minimum limit P09 is set lower than the maximum limit P10, both heating
	and cooling are adjustable between these two limits.
P09 ≥ P10	• For heating or cooling applications (e.g. single duct; single duct & H/C coil)
	– The setting range in cooling mode is from P09…40° instead of 5…40°
	– The setting range in heating mode is from 5…P10° instead of 5…40°
	• For cooling and heating with electrical heater or radiator applications
	– P09 is the setpoint for cooling and P10 the setpoint for heating;
	– the setpoint can no longer be adjusted via rotary knob
Examples	Single duct heating or cooling					Single duct cooling
						with el. heater / radiator
P09 < P10
	5°C	18°C	25°C	40°C	5°C	18°C	25°C	40°C
		P09	P10			P09	P10
	Cooling setpoint adjustable 18…25°C				Cooling setpoint adjustable 18…25°C
	Heating setpoint adjustable 18…25°C				Heating setpoint adjustable 18…25°C
P09 ≥ P10						Cooling fixed = 25°C (P09)
	5°C	21°C	25°C	40°C		Heating fixed = 21°C (P10)
		P10	P09
	Cooling setpoint adjustable 25…40°C
	Heating setpoint adjustable 5…21°C
Temporary setpoint	If the “Temporary setpoint function” is enabled via parameter P69, the setpoint
	adjusted via rotary knob is set back to the Comfort basic setpoint when the
	operating mode changes.
	The factory setting for the Comfort basic setpoint is 21 °C and can be changed via
	parameter P08.
Energy Saving mode	Use control parameters P11 and P12 to adjust the Energy Saving mode setpoints.
	The heating setpoint is factory-set to 15 °C and to 30 °C for cooling.
Protection mode	Use control parameters P65 and P66 to adjust the Protection mode setpoints.
	The heating setpoint is factory-set to 8 °C (frost protection) and to OFF for cooling.
Caution	If a setpoint is set to OFF (P65, P66), the thermostat does not maintain the setpoint
	in the corresponding mode (heating or cooling).
	This means no protective heating or cooling function and thus risk of frost in the
	heating mode or risk of overheat in cooling mode!

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4.4Setpoints and sequence

In single-duct changeover applications the Comfort setpoints for heating and cooling sequence are the same (w).

In applications with electrical heater, radiator or heating / cooling coil the Comfort setpoint is at the heating sequence.

The start of the cooling sequence is linked to “Dead-zone” above the Comfort setpoint. The dead zone can be set via parameter P33.

The setpoints for Energy Saving and Protection mode are below the Comfort setpoints (heating) and above the Comfort setpoints (cooling).

They can be set via parameters P11, P12 (Energy Saving) and P65, P66 (Protection).

The control signal for air flow can be limited via parameters P63 and P64. See section 4.8.1.

To simplify the diagram below, only minimum limitation is shown.

wHeatProt				w			wCoolProt
		wHeatEco				wCoolEco

T[°C]

3181D127

Comfort mode

Energy Saving / Protection mode

Application

Heating mode

Cooling mode

Heating mode

Cooling mode

Y

Y

Y

Y

Single duct

WHeatEco T

W

T

W

T

WHeatProt

WCoolEco

WCoolProt T

Single duct

Y

Y

Y

Y

with min/max

limitation

W

T

W

T

WHeatProt

WHeatEco T

WCoolEco

WCoolProt T

Comfort mode

Energy Saving

Protection mode

Application

Single duct

Y

YE

YE

YE

with

Y

Y

electrical

heater

W

T

WHeatEco

WCoolEco

T

WHeatProt WCoolProtT

Y

YR

YR

YR

Single duct

Y

Y

with radiator

W

T

WHeatEco

WCoolEco

T

WHeatProt WCoolProtT

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Comfort mode

Energy Saving mode

Application

Heating mode

Cooling mode

Heating mode

Cooling mode

Single duct

Y

YHC

Y

YHC

YHC

YHC

Y

Y

with heating /

cooling coil

W

W

T

T

WHeatEco WCoolEco T

WHeatEco WCoolEco T

		Protection mode
		Heating mode			Cooling mode
	Y	YHC		Y			YHC
		WHeatProt WCoolProt T			WHeatProt WCoolProt T

W=Setpoint in Comfort mode

WHeatEco/Prot = Setpoint heating in Energy Saving or Protection mode

WCoolEco/Prot = Setpoint cooling in Energy Saving or Protection mode

YR = Radiator sequence

YE = El. heater sequence

YHC = Heat/cool coil sequence

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4.5Applications overview

The thermostat supports the following applications, which can be configured via DIP switches at the rear of the unit. The control output for the damper actuator is either DC 0…10 V (factory setting) or 3-position (see parameter P47), and for the heating / cooling output ON/OFF, PWM, 3-position or DC 0…10 V.

	Application
Single-duct
•	DC 0…10 V damper actuator
•	3-position damper actuator
		V M
			YV

Single-duct with electrical heater
• DC 0…10 V damper actuator and
ON/OFF, PWM or 3-position electrical
	V M
heater
		YV
• 3-position damper actuator and
DC 0…10 V electrical heater

Single-duct and radiator / floor heating

• DC 0…10 V damper actuator and
ON/OFF, PWM or 3-position radiator
		YV
• 3-position damper actuator and
DC 0…10 V radiator
Single-duct heating / cooling coil
• DC 0…10 V damper actuator and
ON/OFF, PWM or 3-position heating /
	V M
cooling
		YV

•3-position damper actuator and DC 0…10 V heating /cooling

DIP switch

Control output

DC 0…10 V

ON

OFF

1

2

3

4

5

3-position

T

B1

DC 0…10 V

YE

ON

OFF

1

2

3

4

5

ON/OFF, PWM or

3-position

T

B1

DC 0…10 V

ON

YR

OFF

1

2

3

4

5

ON/OFF, PWM or

3-position

T

B1

DC 0…10 V

T

B2

ON

Y1

OFF

1

2

3

4

5

ON/OFF, PWM or

3-position

T

B1

Key	Y1	Heating or heating/cooling valve actuator	B1	Return air temperature sensor or external
				room temperature sensor (optional)
	YV	damper actuator	B2	Changeover sensor (optional)
	YE	Electrical heater

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