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Siemens Building Technologies Basic documentation RVD240 CE1P2384en
HVAC Products 29 Combination with PPS devices 27.05.2004
29.3.2 Overriding the operating mode
From the QAW70, the controller’s operating mode can be overridden. This is made with
the operating mode button and the economy button.
To enable the room unit to act on the controller, the latter must be in automatic mode.
The actions of the QAW's operating mode button on the controller are as follows:
Operating mode
QAW70
Operating mode RVD240
Automatic operation; temporary overriding with the economy
button of the QAW70 possible
Economy button off (lit): Nominal room temperature
Economy button on (not lit): Reduced room temperature
Standby
If the room unit overrides the controller’s operating mode, the operating mode button
on the controller flashes.
29.3.3 Knob for readjusting the room temperature
Using the knob of the QAW70, the nominal room temperature setpoint can be read-
justed by a maximum of ±3 °C.
The adjustment of the room temperature setpoint on the RVD240 will not be affected by
the QAW70.
29.3.4 Impact of the individual QAW70 operating lines on the
RVD240
Op. lines
QAW70:
Function, parameter Impact on the RVD240, notes
1 Nominal room tempera-
ture setpoint
Overrides the setting on the controller
2 Reduced room tempera-
ture setpoint
Overrides the setting on the controller
3 D.h.w. temperature set-
point
Overrides the normal setpoint adjustment on
the controller. The setting range (controller op-
erating line 117) remains valid
4 Weekday For entering the heating program
5 Start of heating period 1 Changes the time switch settings in the control-
ler
6 End of heating period 1 Changes the time switch settings in the control-
ler
7 Start of heating period 2 Changes the time switch settings in the control-
ler
8 End of heating period 2 Changes the time switch settings in the control-
ler
9 Start of heating period 3 Changes the time switch settings in the control-
ler
10 End of heating period 3 Changes the time switch settings in the control-
ler
11 Entry of weekdays 1...7 Changes the time switch settings in the control-
ler
12 Entry of time of day
Changes the time of day on the controller
13 D.h.w. temperature
Display with plant type x–0: – – –
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