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Functions
Function diagram
Remote temperature
sensor
Operating modes
Normal operation
Energy saving mode
or OFF
7-day time switch
2/8
Siemens
Building Technologies
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
ON
W
OFF
SD
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.
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 "
can be readjusted by pressing buttons
When energy saving mode is activated, symbol "
point can be readjusted by pressing buttons
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
that case, the "OFF" will appear and the symbol "
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 "
cally according to the selected switching pattern. For every weekday, a specific switch-
ing pattern can be selected.
Factory setting:
Day(s)
Mo (1) – Fr (5) 6:00 – 8:00 h and
Sa (6) – Su (7) 7:00 – 22:00 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 "
normal operation or energy saving mode respectively.
Room temperature controllers
T
Room temperature
SD
Switching differential
W
Room temperature setpoint
Q14
Output signal for heating
T[°C]
" appears on the display. The setpoint
+
-
and
.
+
and
Normal operation
17:00 – 22:00 h
" or "
" appears on the display. The set-
-
.
-
depressed for 4 seconds. In
" does not appear.
", changeover will take automati-
Energy saving mode
22:00 – 6:00 h and
08:00 – 17:00 h
22:00 – 7:00 h
", the RDE20.1 will maintain
CE1N3036en
13.10.2008
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