Siemens RDD10 Series Operating Instructions Manual
CE1N3031en
24.09.2003
Siemens Building Technologies
HVAC Products
3
031
Room Temperature Controllers
with LCD
RDD10...
for heating systems
2-position control with ON / OFF output for heating
Operating modes: normal operation and energy saving mode
Automatic operating mode change over as an option
Mains-powered AC 230 V (RDD10) or battery-powered DC 3 V (RDD10.1)
Use
The RDD10... 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 Building Technologies Room temperature controllers CE1N3031en
HVAC Products 24.09.2003
Functions
The controller acquires the room temperature with its integrated sensor and maintains
the setpoint by delivering control commands. The switching differential is 1 K.
Q14
T[°C]
ON
OFF
W
SD
3031D01
T Room temperature
SD Switching differential
W Room temperature setpoint
Q14 Output signal for heating
Operating modes
The RDD10... 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 from normal operation to energy saving mode,
and vice versa, is made by pressing a button.
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
-
. When the energy saving setpoint is set to “ 0 ”, the controller is switched off, that is, the RDD10... is not active in
energy saving mode. In that case, symbol “
“ does not appear.
When this function is activated and a manual changeover has been made, the operating mode will automatically be reset on completion of an adjustable period of time. This
period of time can be adjusted with buttons
+
and
-
after pressing the hour glass
button.
The operating action of the reset depends on the setting of the DIL switch, from normal
operation to energy saving mode / OFF, or vice versa. The operating mode can be
manually reset before the delay time has elapsed. When the delay is active, the hour
glass symbols appears on the display.
The digital display shows the actual room temperature and the symbol of the operating
mode currently active. When the heating output is activated, the triangle symbol appears. When the function “automatic operating mode change over” is activated, the
hour glass symbol is shown.
Display in normal operation Display in energy saving mode
Normal operation
Energy saving mode
or OFF
Automatic operating
mode change over
Display
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Siemens Building Technologies Room temperature controllers CE1N3031en
HVAC Products 24.09.2003
Type summary
Type reference Features
RDD10
Mains-powered AC 230 V
RDD10.1
Battery-powered DC 3 V
Ordering
When ordering, please give name and type references, e.g. room temperature controller RDD10.
Valve actuators are to be ordered as separate items.
Equipment combinations
Type of unit Type reference Data sheet
Motoric on/off actuator
SFA21...
4863
Thermal actuator (for radiator valve)
STA21...
4893
Thermal actuator (for small valve 2,5 mm)
STP21...
4878
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
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
The housing engages in the mounting base and snaps on.
The base carries the screw terminals. The DIP switch is located at the rear of the housing.
3031Z01
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