Siemens RDD10 User Manual

Room Temperature Controllers with LCD

for heating systems

3031

RDD10...

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

	CE1N3031en	Siemens Building Technologies
		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			3031D01
ON		W		T[°C]
OFF
		SD

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.

Normal operation	When normal operation is activated, symbol “	“ appears on the display. The setpoint
	can be readjusted by pressing buttons + and	- .

Energy saving mode or OFF

When energy saving mode is activated, symbol “ “ appears on the display. The setpoint 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.

Automatic operating	When this function is activated and a manual changeover has been made, the operat-
mode change over	ing 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.
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 ap-
	pears. 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
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.

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Siemens Building Technologies	Room temperature controllers					CE1N3031en
HVAC Products						24.09.2003