Siemens RDD10 User Manual

031

3

Room Temperature Controllers

RDD10...

with LCD

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

CE1N3031en

24.09.2003

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

Siemens Building Technologies

HVAC Products

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.

Operating modes

Normal operation

Energy saving mode
or OFF

Automatic operating
mode change over

Display

ON

OFF

Q14

W

SD

3031D01

T[°C]

T Room temperature

SD Switching differential

W Room temperature setpoint

Q14 Output signal for heating

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 “

can be readjusted by pressing buttons

+

When energy saving mode is activated, symbol “

point can be readjusted by pressing buttons

“ appears on the display. The setpoint

-

and

.

“ appears on the display. The set-

+

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

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Siemens Building Technologies Room temperature controllers CE1N3031en
HVAC Products 24.09.2003

Type summary

Type reference Features

Ordering

Equipment combinations

Accessories

Mechanical design

RDD10

RDD10.1

Mains-powered AC 230 V

Battery-powered DC 3 V

When ordering, please give name and type references, e.g. room temperature con-
troller RDD10.
Valve actuators are to be ordered as separate items.

Type of unit Type reference Data sheet
Motoric on/off actuator
Thermal actuator (for radiator valve)
Thermal actuator (for small valve 2,5 mm)

SFA21...
STA21...
STP21...

4863
4893
4878

.
.

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

.
.
.
.
.
.
.

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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Siemens Building Technologies Room temperature controllers CE1N3031en
HVAC Products 24.09.2003