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CE1N3023en
2017-11-14

Building Technologies

3

023

Room Temperature Controller

RCC30

for four-pipe fan coil units

Outputs for on / off valve actuators
Outputs for three-speed fan
Control depending on room or return air temperature

Operating modes: normal, energy saving and frost protection or OFF
Operating mode changeover input for remote control
Selectable control parameters
Operating voltage AC 230 V

Use

Typical use:

  Control of the room temperature in individual rooms that are heated or cooled with

four-pipe fan coil units.

  For opening or closing a valve

  for switching a three-speed fan.

Functions

The controller acquires the room temperature with its integrated sensor or external
room temperature sensor (QAA32) or external return air temperature sensor (QAH11.1)
- if used - and maintains the setpoint by delivering control commands to the 2-point-
valve.
The switching differential is adjustable. It can be 1 or 4 K in heating mode and
0.5 or 2 K in cooling mode.

Summary of Contents for RCC30

Page 1: ...rating voltage AC 230 V Use Typical use Control of the room temperature in individual rooms that are heated or cooled with four pipe fan coil units For opening or closing a valve for switching a three speed fan Functions The controller acquires the room temperature with its integrated sensor or external room temperature sensor QAA32 or external return air temperature sensor QAH11 1 if used and mai...

Page 2: ...when 1 the measured room temperature lies by half the switching differential above the setpoint and 2 the heating valve has been fully open for more than one minute The cooling valve receives the OPEN command via control output Y21 when 1 the measured room temperature lies by half the switching differential plus the dead zone above the setpoint x w xdz SDC and 2 the cooling valve has been closed f...

Page 3: ...witch no 4 in position ON standby is locked also which means that the controller will not switch to standby but to OFF In energy saving mode the setpoint of heating is 16 C and the setpoint of cooling 28 C independent of the position of the setpoint knob This operating mode will be activated when input D1 for operating mode changeover is active and DIP switch no 2 is set to ON A changeover switch ...

Page 4: ... limitation in increments of 1 K 5 Room temperature setpoint knob 6 Set of DIP switches DIP switch no Meaning Position ON Position OFF 1 Fan control Fan control is temperature dependent in all operating modes Fan control in normal operation is tem perature independent 1 2 Operating mode change over via external switch Changeover between normal operation and energy saving mode Changeover between no...

Page 5: ...ing which the fan LED flashes indicating that the reset has been correctly made This takes about 3 seconds Then the controller will be ready to operate and the LED stops flashing The cables used must satisfy the insulation requirements with regard to mains potential Sensor input B1 M carries mains potential If the sensor s cables must be extended the cables used must be suited for mains voltage Wa...

Page 6: ... differential in cooling mode SDC selectable 0 5 K or 2 K Dead zone in normal operation 2 K or 5 K Setpoint Energy saving mode heating 16 C Setpoint Energy saving mode cooling 28 C Setpoint Standby 8 C Operation Climatic conditions Temperature Humidity to IEC 60721 3 3 class 3K5 0 50 C 95 r h Transport Climatic conditions Temperature Humidity Mechanical conditions to IEC 60721 3 2 class 2K3 25 70 ...

Page 7: ...r M Measuring neutral Return air temperature sensor D1 GND Status input for potential free operating mode changeover switch operating action can be selected Q1 Control output Fan speed I AC 230 V Q2 Control output Fan speed II AC 230 V Q3 Control output Fan speed III AC 230 V Y11 Control output Valve AC 230 V Y21 Control output Valve AC 230 V Connection diagram B1 Return air temperature sensor QAH...

Page 8: ...ogies Division International Headquarters Gubelstrasse 22 CH 6300 Zug Tel 41 58 724 24 24 Siemens Switzerland Ltd 2002 2017 Technical specifications and availability subject to change without notice www siemens com buildingtechnologies Dimensions 96 6 114 15 42 8 3021M01 90 4 4 3021M02 28 28 28 28 26 30 35 30 11 8 104 4 unit baseplate ...

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