Siemens RDE20.1 User Manual
CE1N3036en
13.10.2008
Building Technologies
3
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
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Siemens Room temperature controllers CE1N3036en
Building Technologies 13.10.2008
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.
Q14
T[°C]
ON
OFF
W
SD
3030D01
T Room temperature
SD Switching differential
W Room temperature setpoint
Q14 Output signal for heating
The RDE20.1 can provide control either according to the internal room temperature or
according to a remote temperature. The controller detects automatically when a QAH11
is connected. In this case, the internal temperature sensor is deactivated.
Operating modes
The RDE20.1 provides normal operation and, optionally, energy saving mode or OFF.
The difference between normal operation and energy saving mode is only the room
temperature setpoint. The changeover between the operating modes can be made
either automatically according to the 7-day time switch or manually with the operating
mode selector.
When normal operation is activated, symbol “
“ appears on the display. The setpoint
can be readjusted by pressing buttons
+
and -.
When energy saving mode is activated, symbol “
“ appears on the display. The set-
point can be readjusted by pressing buttons
+
and
-
.
In energy saving mode, the unit can also be switched to “Off”. This is accomplished by
selecting a setpoint of 5 °C and then keeping button
-
depressed for 4 seconds. In
that case, the “OFF“ will appear and the symbol “
“ does not appear.
The changeover between the operating modes can take place either automatically
(
) or manually ( , ), depending on the position of the operating mode selector.
When the operating mode selector is in position “
”, changeover will take automatically according to the selected switching pattern. For every weekday, a specific switching pattern can be selected.
Factory setting:
Day(s) Normal operation Energy saving mode
Mo (1) – Fr (5) 6:00 – 8:00 h and
17:00 – 22:00 h
22:00 – 6:00 h and
08:00 – 17:00 h
Sa (6) – Su (7) 7:00 – 22:00 h 22:00 – 7:00 h
The current setpoint can be temporarily readjusted by pressing
buttons
+
and
-
. The setpoint will then be reset to its initial value the next time auto-
matic or manual changeover takes place.
When the operating mode selector is set to “
“ or “ “, the RDE20.1 will maintain
normal operation or energy saving mode respectively.
Function diagram
Remote temperature
sensor
Normal operation
Energy saving mode
or OFF
7-day time switch
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Siemens Room temperature controllers CE1N3036en
Building Technologies 13.10.2008
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.
0 6 12 18 24
0 6 12 18 24
0 6 12 18 24
Automatic changeover according Normal operation Energy saving mode
to the switching pattern
When taking out the batteries, the setpoints and the information required for operating
mode changeover are retained for 3 minutes.
Ordering
When ordering, please give name and type reference: room temperature controller
RDE20.1.
Sensor and valve actuators are to be ordered as separate items.
Equipment combinations
Type of unit Type reference Data sheet
Temperature sensor
QAH11
1840
Room sensor
QAA32
1747
Electromotoric actuator
SFA21...
4863
Electrothermal actuator (for radiator valve)
STA21...
4877
Electrothermal actuator (for small valve 2,5 mm)
STP21...
4878
2-port and 3-port zone valves
MXI/MVI421…
4867
Electromotoric actuator for zone valve V..146..
SUA21
4830
Electric actuator
SUA11/22
4832
Air damper actuator
GDB…
4624
Air damper actuator
GSD/GQD…
4606
Rotary damper actuators
GXD…
4622
16A extension relay module
SEZ16
-
Accessories
Description Type reference
Adapter plate 120 x 120 mm for 4“ x 4“ conduit boxes ARG70
Adapter plate 96 x 120 mm for 2“ x 4“ conduit boxes ARG70.1
Adapter plate for surface wiring 112x130 mm ARG70.2
Display
Backup
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