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Siemens RDG100…/RDG110…/RDG140.../RDG160… Basic Documentation CE1P3076.en
Building Technologies Functions 19 Jun 2009
The table below shows the relation between parameter, temperature source and
temperature display:
Parameter P51
External temp.
sensor available
Source for display of room
temperature
Output control according
to
Floor temp. limit
function
OFF No Built-in sensor Built-in sensor Not active
OFF Yes External temp. sensor External temp. sensor Not active
10...50˚C No Built-in sensor Built-in sensor Not active
10…50˚C Yes Built-in sensor
Built-in sensor + limit by
external sensor
Active
The floor temperature limitation function influences the outputs listed in the table
below:
*) If P13 = ON --> el. heater in cooling
mode
Dewpoint monitoring is essential to prevent condensation on the chilled ceiling
(cooling with fan disabled, parameter P52). It helps avoid associated damage to
the building.
A dewpoint sensor with a potential-free contact is connected to multifunctional input
X1, X2 or D1. If there is condensation, the cooling valve is fully closed until no
more condensation is detected, and the cooling output is disabled temporarily.
The condensation symbol
is displayed during temporary override.
The input must be commissioned accordingly (P38, P40, P42).
See section 4.10 “Multifunctional input”.
If the button l
ock function is enabled by parameter P14, the buttons will be locked
or unlocked by pressing the right button for 3 seconds.
If “Auto lock” is configured, the thermostat will automatically lock the buttons 10
seconds after the last adjustment.
The thermostat can be forced into Energy Saving mode (e.g. when a window is
opened). The window contact can be connected to digital input D1 (or multi-
functional input X1, X2). Set parameter P42 (P38, P40) to 3.
The left button switches the operating mode from Energy Saving to Comfort for the
period preset in P68, if the following conditions are fulfilled:
The operating mode switchover contact is closed (connected to input X1, X2,
D1, parameter P38, P40, P42 set to 3)
Parameter P68 (extend Comfort period) is greater than 0
During the temporary Comfort mode extension, sandglass symbol
appears.
Floor temp. limit function has influence on
Application Output Y1 Output Y2 Output Y3
Heat. mode
(P01=0/2/3)
Cool. mode
(P01=1/2/3)
Heat. & cool.
mode (P01=4) Remark
2-pipe H/C valve Y1 N/A
2-pipe & el heater H/C valve El. heater Y2 Y2 *) Only el. heater
2-pipe & radiator H/C valve Radiator Y2 Y2 Only radiator
4-pipe Heating valve Cooling valve Y1 N/A Y1
4-pipe & el heater Heating valve Cooling valve El. heater Y3 N/A Y3 Only el. heater
2-stage 1st H/C 2nd H/C Y1, Y2 N/A
Dewpoint monitoring
Button lock
Operating mode
switchover contact
(window contact)
Extended Comfort
mode (operating mode
switchover contact
closed)
18


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