3

182

Use

N3182en

May 27. 2009

Room thermostat with

LCD for wall mounting

for VAV heating and cooling systems

RDG400

• Modulating PI control

• Control depending on the room or the return air temperature

• Output for DC 0…10 V actuator and auxiliary output ON/OFF, PWM or

3-position

• Automatic or manual heating / cooling changeover

• Operating modes: Comfort, Energy Saving and Protection

• 3 multifunctional inputs for keycard contact, external sensor, etc.

• Adjustable commissioning and control parameters

• Minimum and maximum setpoint limitation

• Minimum and maximum limitation of air flow signal DC 0…10 V

• Output signal inversion as an option

• Operating voltage AC 24 V

• Backlit display

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

VAV systems via ON/OFF or modulating control outputs:

• Single-duct

• Single-duct system with electrical heater

• Single-duct system and radiator / floor heating

• Single-duct system with heating / cooling coil

Building Technologies

Functions

• Room temperature control via built-in temperature sensor or external room temperature / return air temperature sensor

• Automatic or manual changeover between heating and cooling mode

• Selection of applications via DIP switches

• Selection of operating mode with operating mode button on the thermostat

• Display of current room temperature or setpoint in °C and/or °F

• Minimum and maximum setpoint limitation

• Button lock (automatic or manual)

• 3 multifunctional inputs, freely selectable for:

–

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

–

Changeover sensor for automatic heating / cooling mode

–

External room temperature or return air temperature

–

Dewpoint sensor

–

Electrical heater enable

–

Faults

• Minimum and maximum limitation of air flow signal DC 0…10 V

• Floor heating temperature limit

• Reload factory settings for commissioning and control parameters

Applications

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 auxiliary heating / cooling output ON/OFF, PWM, 3-position or DC 0…10 V.

DIP switch

Control output Application

Single-duct

•

•

DC 0…10 V damper actuator

3-position damper actuator

V M

YV

ON

OFF

1 2 3 4 5

DC 0…10 V

3-position

T

B1

Single-duct with auxiliary heater

•

•

DC 0…10 V damper actuator and

ON/OFF, PWM or 3-position auxiliary heater

3-position damper actuator and

DC 0…10 V auxiliary heater

Single-duct and radiator / floor heating

•

•

DC 0…10 V damper actuator and

ON/OFF, PWM or 3-position radiator

3-position damper actuator and

DC 0…10 V radiator

V M

YV

YE

YV

YR

T

B1

T

B1

ON

OFF

1 2 3 4 5

ON

OFF

1 2 3 4 5

DC 0…10 V

ON/OFF, PWM or 3-position

DC 0…10 V

ON/OFF, PWM or 3-position

Single-duct heating and cooling coil

•

•

DC 0…10 V damper actuator and

ON/OFF, PWM or 3-position heating and cooling

3-position damper actuator and

DC 0…10 V heating and cooling

V M

YV

Y1

T

B2

T

B1

ON

OFF

1 2 3 4 5

DC 0…10 V

ON/OFF, PWM or 3-position

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Building Technologies

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Type summary

Equipment combinations

Product no.

RDG400

Operating voltage

1) ON/OFF, 3-position or PWM

AC 24 V

Type of unit

Cable temperature sensor

Room temperature sensor

DC 0..10 V actuator

Condensation detector / Supply unit

Electrical actuator, DC 0..10 V

(for radiator valve)

Electrical actuator, DC 0..10 V

(for 2 and 3 port valves / V…P45)

Electrical actuator, DC 0..10 V

(for small valve 2,5 mm)

Electrical actuator, DC 0..10 V

(for small valves 5.5 mm)

Electrical actuator, DC 0..10 V

(for Combi-valve VPI45)

Thermal actuator, DC 0..10 V

(for small valves and radiator valves)

Number of control outputs

ON/OFF PWM 3-pos DC 0…10 V

1 1) 1 1) 1 1) 1

Type reference Data Sheet

QAH11.1 1840

QAA32

QXA2000 /

AQX2000

SSA61...

SSC61…

SSP61…

SSB61...

SSD61...

STS61

1747

1542

4893

4895

4864

4891

4861

4880

GQD161… 4605

GDB161…

GLB161…

GMA161…

4634

4614

DC 0…10 V damper actuator

GEB161… 4621

4613 GCA161…

GBB161…

GIB161…

GDB181.1E/3

4626

VAV compact controller 3544

GLB181.1E/3

ON/OFF actuators

AC 24 V

Building Technologies

Electromotoric ON/OFF valve and actuator

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

Electromotoric ON/OFF actuator

Thermal actuator (for radiator valve)

MVI…/MXI…

SFA71...

STA71...

4867

4863

4877

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3-position actuators

AC 24 V

Thermal actuator

(for small valves 2.5 mm)

Electrical actuator, 3-position

(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)

STP71...

SSA81...

SSP81…

SSB81...

SSD81...

SQS85…

Accessories

Description

Changeover mounting kit (50 pcs / package)

Product no. Data Sheet

ARG86.3

Adapter plate 120 x 120 mm for 4“ x 4“ conduit boxes ARG70

1840

Adapter plate 112 x 130 mm for surface wiring ARG70.2

Ordering

When ordering, please indicate product no. and description:

E.g. RDG400 room thermostat

Order valve actuators separately.

Mechanical design

Operation and settings

The room thermostat consists of 2 parts:

• Plastic housing which accommodates the electronics, the operating elements and the room temperature sensor

• Mounting plate with the screw terminals

The housing engages in the mounting plate and is secured with 2 screws.

1. Operating mode selector / Esc

2. Protection and Ok

3. Rotary knob for setpoint and parameter adjustment

4878

4893

4864

4891

4861

4573

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3

2

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Display

1

2

3

4

5

17 16 15 14 13 12

11

6

6

7

# Symbol Description

1

Heating mode

2

Heating mode auxiliary heater on (2 nd stage)

3

Cooling mode

4

Comfort mode

5

Energy Saving mode

8 9 10

# Symbol Description

10 Confirmation of parameters

11

Degrees Celsius

Degrees Fahrenheit

12 Digits for room temperature and setpoint

6

Protection

7

Escape

8

Digits for room temperature, setpoint, etc.

Mounting and installation

13

14

15

16

17

Button lock active

Condensation in room (dewpoint sensor active)

Fault

Temporary timer function (visible when operating mode is temporarily extended due to prolonged presence or absence)

Indicates that room temperature is displayed

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

Building Technologies

• The room thermostat must be mounted in a clean, dry indoor place and must not be exposed to drip or splash water

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Wiring

Commissioning

Control sequence

Calibrate sensor

Setpoint and setpoint range limitation

Disposal

See Mounting Instructions (M3182) 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

• Inputs X1-M, X2-M or D1-GND of different units (e.g. summer / winter switch) may be connected in parallel with an external switch. Consider overall maximum contact sensing current for switch rating

• Disconnect power supply before removing the thermostat from the mounting plate!

Select the application and type of control output via the DIP switches before fitting the thermostat to the mounting plate.

After power is applied, the thermostat carries out a reset during which all LCD segments flash, indicating that the reset was correct. After the reset, which takes about

3 seconds, the thermostat is ready for commissioning by qualified HVAC staff. The control parameters of the thermostat can be set to ensure optimum performance of the entire system (see Basic Documentation P3182).

• The control sequence may need to be set via parameter P01 depending on the application. The factory setting for the single-duct application is “Cooling only”

• Recalibrate the temperature sensor if the room temperature displayed on the thermostat does not match the room temperature measured. To do this, change parameter P05

• We recommend to review the setpoints and setpoint ranges (parameters P08…P12) and change them as needed to achieve maximum comfort and save energy

The device is classified as waste electronic equipment in terms of the European Directive 2002/96/EC (WEEE) and should not be disposed of as unsorted municipal waste.

The relevant national legal rules are to be adhered to. Regarding disposal, use the systems setup for collecting electronic waste.

Observe all local and applicable laws.

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Technical data

Power supply

Outputs

Inputs

Operational data

Operating voltage SELV AC 24 V ±20%

Power consumption

Control output Y10-G0

Resolution

Current

Control output Y1, Y2-G

Rating

Multifunctional inputs

X1-M / X2-M

Type

Operating

Contact

D1-GND

Contact

Function input

External temperature sensor, changeover sensor, operating mode switchover contact, dewpoint monitor contact, enable electrical heater contact, fault contact

Max. 2 VA

DC 0…10 V

39 mV

Max. ±1 mA

AC 24 V

Max. 1 A

QAH11.1 (NTC)

Selectable (NO/NC)

DC 0…5 V, max. 5 mA

Selectable (NO/NC)

SELV DC 6…15 V, 3…6 mA

Selectable

Switching differential, adjustable

Heating mode

Cooling mode

(P30)

(P31)

2 K (0.5...6 K)

1 K (0.5...6 K)

Setpoint setting and range

Comfort mode (P08) 21 °C (5...40 °C)

Energy Saving mode (P11-P12) 15 °C/30 °C (OFF, 5...40 °C)

Protection (P65-P66)

Multifunctional inputs X1 / X2 / D1 Selectable

Input X1 Ext. temperature sensor

(P38=1)

Changeover sensor

(P40=2)

Operating mode switchover

(P42=3)

Built-in room temperature sensor

Measuring range

Accuracy at 25 °C

Temperature calibration range

Settings and display resolution

Setpoints

Current temperature value displayed

0…49 °C

< ± 0.5 K

± 3.0 K

0.5 °C

0.5 °C

Building Technologies

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Environmental conditions

Standards

General

Operation

Climatic conditions

Temperature

Humidity

Transport

Climatic conditions

Temperature

Humidity

Mechanical conditions

Storage

Climatic conditions

Temperature

Humidity

conformity

EMC directive

N474

C-tick conformity to

EMC emission standard

Reduction of hazardous substances

Product standards

Automatic electrical controls for household and similar use

Special requirements for temperature-dependent controls

Electronic control type

Electromagnetic compatibility

Emissions

Immunity

Safety class

Pollution class

Degree of protection of housing

Connection terminals

As per IEC 721-3-3

Class 3K5

0...50 °C

<95% r.h.

As per IEC 721-3-2

Class 2K3

−25... 60 °C

<95% r.h.

Class 2M2

As per IEC 721-3-1

Class 1K3

−25... 60 °C

<95% r.h.

2004/108/EC

AS/NSZ 4251.1:1999

2002/95/EC

As per EN 60730–1

As per EN 60730–2-9

2.B (micro-disconnection on operation)

As per IEC/EN 61000-6-3

As per IEC/EN 61000-6-2

III as per EN 60730

Normal

IP30 as per EN 60529

Solid wires or prepared stranded wires

1 x 0.4…2.5 mm 2 or 2 x 0.4…1.5 mm 2

RAL 9003 white Housing front color

Connection terminals

G X1 M X2 D1 GND

G0

SELV

G, G0 Operating voltage AC 24 V

Y10/G0 Control output for DC 0…10 V actuator

Y1/G, Y2/G Control output for 2-position, PWM or 3-position actuators

X1, X2 Multifunctional input for temperature sensor (e.g. QAH11.1)

or potential-free switch

Factory setting:

- X1 = external room temperature sensor

- X2 = sensor or switch for automatic heating / cooling

changeover

M Measuring neutral for sensor and switch

D1, GND Multifunctional input for potential-free switch.

Factory setting: Operating mode switchover contact

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Connection diagrams

Application: Single-duct

S3

V1

V1

V1 DC 0…10 V damper actuator

N1 Room thermostat RDG400

S1..S3 Switch (keycard, window contact, etc.)

B1, B2 Temperature sensor (return air temperature, external room temperature, changeover sensor, etc.)

Application: Single-duct with electrical heater, radiator or heating / cooling

S3

V1 3-position damper actuator

V1

V2

V1

V2

V2

V1

V1

V2

DC 0…10 V damper actuator

2-position or PWM electrical heater, radiator or heating / cooling valve

V1 DC 0…10 V damper actuator

V2 3-position electrical heater,

radiator or heating / cooling

valve

V1 3-position damper actuator

V2 DC 0…10 V electrical heater, radiator or heating / cooling valve

N1 Room thermostat RDG400

S1..S3 Switch (keycard, window contact, etc.)

B1, B2 Temperature sensor (return air temperature, external room temperature, changeover sensor, etc.)

Dimensions

Dimensions in mm

28.3

4.0

28.3

9.0

28.3

4.0

28.3

128.0

28.3

16.0

27.7

© 2009 Siemens Switzerland Ltd.

Building Technologies

93.0

28.5

30.8

Subject to change

28.2 27.8

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May 27. 2009