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N3075en
17.04.2009
RDX33.21, RDX43.2
Room temperature
controllers with LCD and
7-day time switch
For release of a heat pump or control of actuating devices
in heating or cooling mode
•
Operating modes: Auto Timer, Comfort, Energy Saving, and Protection
•
Potential-free output (ON / OFF) for release of a heat pump or control of
actuating devices
•
Potential-free output (ON / OFF) for selection of heating or cooling
•
Output for control of auxiliary electric heating (RDX43.2)
•
Manual heating / cooling changeover
•
8 programmable time switches
•
Selectable commissioning and control parameters
•
Selectable display of room temperature or setpoint
•
Minimum and maximum setpoint limitation
•
Operating voltage:
Batteries DC 3 V (RDX33.21)
AC 230 V (RDX43.2)
3
RDX33..
RDX43..
Building Technologies
075
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Table of Contents
Related Manuals for Siemens RDX33.21
Summary of Contents for Siemens RDX33.21
- Page 1 8 programmable time switches • Selectable commissioning and control parameters • Selectable display of room temperature or setpoint • Minimum and maximum setpoint limitation • Operating voltage: Batteries DC 3 V (RDX33.21) AC 230 V (RDX43.2) N3075en Building Technologies 17.04.2009...
- Page 2 , the controller maintains the setpoint, which can be adjusted via the buttons. For energy saving purposes, the setpoint setting range can be limited to a minimum Energy saving tip Setpoint limitation (parameter P05) and a maximum (parameter P06). 2/14 Siemens Room temperature controller with LCD N3075en Building Technologies 17.04.2009...
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Page 3: Protection Mode
Protection is maintained (this independent of the manual H/C changeover status). These setpoints can be adjusted via control parameters P03 and P04. The factory set- ting for heating in Protection mode is 8 °C. 3/14 Siemens Room temperature controllers with LCD N3075en Building Technologies... -
Page 4: Control Sequences
/ off time can be adjusted via parameters P11 and P12. The factory setting for the minimum on time is 1 minute and for the minimum off time 3 minutes. 4/14 Siemens Room temperature controller with LCD N3075en Building Technologies... - Page 5 The controller leaves the programmable time switch setting mode if no button is pressed within 20 seconds. All changes made after the last press of will not be saved. 5/14 Siemens Room temperature controllers with LCD N3075en Building Technologies 17.04.2009...
- Page 6 (e.g. 50 °C or 0 °C). Failure of built-in Should the built-in sensor become defective, the display will show “Err” blinking to draw sensor the user‘s attention. 6/14 Siemens Room temperature controller with LCD N3075en Building Technologies 17.04.2009...
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Page 7: Control Parameters
Set the controller to Protection mode Press simultaneously for 3 seconds. Release the buttons and, within 2 seconds, press the operating mode button 2 times. The display shows “8888“ during this process. 7/14 Siemens Room temperature controllers with LCD N3075en Building Technologies 17.04.2009... -
Page 8: Equipment Combinations
Control parameters for RDX33.21 and RDX43.2 Parameter Factory setting Setting range in increments of ..K/..min RDX33 RDX43 OFF, 5 °C…W cool , 0.5 K Setpoint for heating in Energy Saving mode (W heat Setpoint for cooling in Energy Saving mode... -
Page 9: Mechanical Design
Adapter plate 112 x 130 mm for surface wiring ARG70.2 Ordering When ordering, please give description and product No.: E.g. room temperature controller RDX33.21 Valve actuators are to be ordered as separate items. Mechanical design The controller consists of 2 parts: •... -
Page 10: Operating Elements
13 Time of day in hours and minutes (12- or 24-hour format) 14 Symbols: Battery exchange Protection mode Comfort mode Energy Saving mode Auto Timer mode AUTO 15 Battery compartment (only with RDX33.21) 10/14 Siemens Room temperature controller with LCD N3075en Building Technologies 17.04.2009... -
Page 11: Mounting And Installation
• For comfort and energy saving reasons, it is recommended to check the setpoints Setpoint and setting range limitation and setpoint setting ranges (parameters P01…P06) and, if necessary, to change them accordingly 11/14 Siemens Room temperature controllers with LCD N3075en Building Technologies 17.04.2009... - Page 12 Technical data Operating voltage Power supply RDX33.21 DC 3 V Alkaline batteries AA 2 x 1.5 V Operating voltage RDX43.2 AC 230 V + 10/-15% Frequency 50/60 Hz Power consumption Max. 8 VA Outputs Control outputs RDX33.. Q13-Q14 AC 230 V / max. 4 A Q21-Q22 AC 24…230 V / max.
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Page 13: Connection Terminals
Q21-Q24 Control output (NO), H/C changeover for cooling Q33-Q34 Control output (NO), auxiliary electric heater Connection diagrams Use: H/C with RDX33.21 H/C plus auxiliary electric heating with RDX43.2 Heat pump DC 3 V H/C with actuating devices DC 3 V... - Page 14 H/C changeover output Q33-Q34 Output for auxiliary electric heating AC 230 V or SELV DC 10 V Dimensions RDX33… RDX43… ©2008 – 2009 Siemens Switzerland Ltd Subject to change 14/14 Siemens Room temperature controller with LCD N3075en Building Technologies 17.04.2009...