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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the enduser settings
18.10.2002
3.3.1 Temperature adjustment via the room unit
Temperature adjustment or readjustment via a room unit is active only when automatic
mode has been selected on the controller!
Adjustment made with the controller’s setpoint knob
= controller's nominal room temperature setpoint
The QAW50 room unit has a knob for readjusting the setpoint in a + / - range; the re-
adjustment is added to the setpoint adjusted with the controller’s setpoint knob.
Adjustment made with the controller’s setpoint knob
+ readjustment made on the room unit (± 3 °C)
= controller's nominal room temperature setpoint
Adjustment made with the controller’s setpoint knob
20 °C
Adjustment made with the controller’s setpoint knob
+ 2 °C
Resulting setpoint
22 °C
The QAW70 room unit has an absolute setpoint adjustment using an operating line
which replaces the setpoint adjusted with the controller’s setpoint knob, provided auto-
matic mode has been selected on the controller.
In addition, the QAW70 has a knob for readjusting the setpoint in a + / - range; the re-
adjustment is added to the setpoint adjusted with the controller’s setpoint knob.
Setpoint programmed with the room unit
+ readjustment made on the room unit (± 3 °C)
= controller's nominal room temperature setpoint
Adjustment made with the controller’s setpoint knob (in-
active)
22 °C
Setpoint adjustment on the room unit’s line
19 °C
Adjustment made with the controller’s setpoint knob
+ 2 °C
Resulting setpoint
21 °C
3.4 Manual
operation
•
Possibility of manual interference in heat generation and heat distribution
By pressing the button for manual operation, all available heat sources will be put into
operation on a fixed basis, and the circulating pumps of the consumers will be activated.
Activation:
Manual operation is activated by pressing this button. It becomes ac-
cessible only when the cover of the controller is opened.
Manual operation remains active until it gets deactivated again (no
functional timeout)
Deactivation:
•
By pressing one of the operating mode buttons
•
By pressing again the manual operation button
When deactivating the function, the controller will automatically return to the operating
mode previously selected.
In the event of a power failure during manual operation, the controller will resume man-
ual operation as soon as power is restored.
Without room unit
QAW50
Example:
QAW70
Example:
Benefit
Description
Setting
Notes
