Power supply

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OpenTherm® boilers (Smart Power function)

DC 18 V SELV

Power consumption

Max. 230 mW

Radio parameters

Frequency band

2.4…2.4835 GHz

Maximum radio-frequency power

13 dBm

Communication standard

Based on Zigbee 3.0

MAC protocol

IEEE 802.15.4

Zigbee channels

11...26

Pairing method with GTW100ZB

Global Link Key

Functional data

Protection mode

8 °C

Setpoint setting range

5…35 °C

Built-in room temperature sensor

Accuracy at 25 °C

< ±0.5 K

Temperature calibration range

±2.5 K

Resolution of settings and displays

Setpoints

0.5 °C

Room temperature

0.5 °C

Ambient conditions and protection classification

Degree of protection of housing as per EN 60529

IP30

Protection against electrical shock as per EN 60730-1

RDZ103ZB

Protection class III

Classification as per EN 60730-1

Function of automatic control devices

Type 1

Degree of pollution

2

Overvoltage category

RDZ103ZB

I

Rated impulse voltage

RDZ103ZB

330 V

Climatic ambient conditions

Transport and storage (in packaging)

  • Temperature: -25…+70 °C (-13…+158 °F)
  • Air humidity: < 95 % r.h. (non-condensing)

Operation (in dry locations having no temperature or humidity control)

  • Temperature: 0...50 °C (32...122 °F)
  • Air humidity: < 95 % r.h. (non-condensing)

Mechanical ambient conditions

Transport (in transport packaging) as per IEC/EN 60721-3-2

Class 2M4

Operation as per IEC/EN 60721-3-3

Class 3M11

Standards, directives and approvals

EU conformity (CE)

See EU declaration of conformity A5W02626208A*

UK conformity (UKCA)

See UK declaration of conformity A5W02626209A*

RCM conformity

See RCM declaration of conformity A5W02626210A*

Environmental compatibility

The product environmental declaration (A5W00269582A*) contains data on environmentally compatible product design and assessments (RoHS compliance, materials composition, packaging, environmental benefit, disposal).

*) The documents can be downloaded from www.siemens.com/bt/download.

Eco design and labeling directives

Based on EU Regulation 813/2013 (Eco design directive) and 811/2013 (Labelling directive) concerning space heaters, combination heaters, the following classes apply:

Application with On/Off operation of a heater

Class I

value 1%

TPI (PWM) room thermostat, for use with On/Off output heaters

Class IV

value 2%

General

Housing color

RAL9003

Thermostat with box, user document and accessory

RDZ103ZB

173 g

Thermostat

RDZ103ZB

104 g

Electrical connections

Connection terminals

Screw terminals

For solid wires or prepared stranded wires

2 × 1.5 mm2 or 1 × 2.5 mm2 (min. 0.5 mm2)