User Manual

ManualsBrandsSiemens ManualsThermostats (temperature controller with sensor)High current switching relay SEZ16

CE1N3036en

13.10.2008

Building Technologies

036

Room Temperature Controller

with 7-Day Time Switch, LCD and

opt. Remote Temperature Sensor

RDE20.1

for heating systems

2-position control with ON/OFF output for heating

Operating modes: normal operation and energy saving mode

7-day time switch and manual operation

Battery-powered DC 3 V

Input for external temperature sensor

Use

The RDE20.1 is used for the control of the room temperature in heating systems.

Typical applications:

• Apartments

• Commercial spaces

• Schools

For the control of the following pieces of equipment:

• Thermic valves or zone valves

• Gas or oil burners

• Fans

• Pumps

Summary of content (8 pages)

PAGE 1
3 Room Temperature Controller with 7-Day Time Switch, LCD and opt. Remote Temperature Sensor 036 RDE20.1 for heating systems 2-position control with ON/OFF output for heating Operating modes: normal operation and energy saving mode 7-day time switch and manual operation Battery-powered DC 3 V Input for external temperature sensor Use The RDE20.1 is used for the control of the room temperature in heating systems.
PAGE 2
Functions The controller acquires the room temperature with its integrated sensor or external room temperature sensor (QAA32) or external return air temperature sensor (QAH11) – if used – and maintains the setpoint by delivering control commands. The switching differential is 1 K. 3030D01 Q14 Function diagram ON OFF W T[°C] T Room temperature SD Switching differential W Room temperature setpoint Q14 Output signal for heating SD Remote temperature sensor The RDE20.
PAGE 3
Display The digital display shows the actual room temperature, the time of day, the weekday, the current switching pattern and the symbol of the operating mode currently active. The switching pattern shows normal operation as a double bar and energy saving mode as a single bar with a flashing time pointer. When the heating output is activated, the triangle symbol appears.
PAGE 4
Mechanical design The unit consists of two parts: • A plastic housing with digital display, which accommodates the electronics, the operating elements and the built-in room temperatures sensor • A mounting base 3035Z01 The housing engages in the mounting base and snaps on. The base carries the screw terminals. Legend 1 2 3 4 Display of the room temperature in °C or setpoints Current time of day using the format 00:00 ...
PAGE 5
Notes The room temperature controller should be mounted in a location where the air temperature can be measured as accurately as possible without getting adversely affected by direct solar radiation or other heat or refrigeration sources. Mounting height is about 1.5 m above the floor. The unit can be fitted to a recessed conduit box. • • Only authorised staff may open the controller.
PAGE 6
Technical data Power supply Sensor inputs Outputs Switching Outputs (Q11, Q12, Q14) Operating voltage Battery life (RDE20.1) Supply line fusing External: External temperature sensor (Inputs B1, M) Permissible cable length for External sensor (Terminal B1) Tolerance Internal: Thermistor Relay Contacts Switching voltage Switching current At 250 V Contact life at AC 250 V At 0.1 A res. At 0.5 A res. At 4 A res.
PAGE 7
Transport Climatic conditions Temperature Humidity Mechanical conditions Storage Climatic conditions Temperature Humidity conformity to EMC directive Low voltage directive C-Tick conformity to EMC Requirement Norms and standards to IEC 721-3-2 class 2K3 -25…+60 °C <95 % r. h. class 2M2 to IEC 721-3-1 class 1K3 -25…+60 °C <95 % r. h. 2004/108/EC 2006/95/EC N 4 7 4 AS/NZS 4251.
PAGE 8
control of a gas-fired wall-hung boiler N1 control of a gas-fired floor-standing boiler T Y1 2222S03 M1 Room temperature controller with direct control of a heating circuit pump (precontrol by manual mixing valve) F1 Thermal reset limit thermostat N1 RDE20.