Adaption Of The Heating Curve - Siemens ALBATROS QAA73.110 Basic Documentation

Room temperature
control
Functioning
Switching differential
Note
Description
Line 77
Effect
Note
44/70
Siemens Building Technologies
HVAC Products
With pump heating circuits, the amount of heat supplied is controlled by switching the
pumps on and off. This is accomplished with 2-position control by means of the room
temperature's switching differential.
°C
ON
P
OFF
Pump ON TRx
Pump OFF TRx
P 76
ON
OFF
TRx
w
The heating circuit pumps are controlled not directly by the QAA73.110, but by boiler
control. For this reason, this functionality is not ensured by the room unit alone.

4.18 Adaption of the heating curve

The adaption facility learns from the different heating situations and matches the control
to the heating circuit at regular intervals. Adaption of the heating curve takes place
automatically, which means that it need not be adjusted manually.
1. Press the line selection buttons to select line 77.
1. Press the + / – buttons to select the type of heating curve adaption.
Setting range
Inactive / active
The setting will switch automatic adaption of the heating curve on or off.
Entry:
Inactive No adaption:
The heating curve settings are maintained.
Active Automatic adaption:
The heating curve will automatically be adapted as soon as the
operating level "Nominal room temperature setpoint" is used.
Adaption acts according to line 75 "Room influence".
Basic Documentation QAA73.110 Room unit
Description of the heating engineer settings
TRx
TRw+SDR
TRw
t
= TRw
= TRw + SDR
[ ]
°C
Unit
–
Legend
TRx Actual value of the room
temperature
TRw Room temperature setpoint
SDR Switching differential of
room temperature
ON Switch-on point
Legend
TRx Actual value of the room
temperature
TRw Room temperature setpoint
SDR Switching differential of room
temperature
P Pump (ON / OFF)
w Setpoint
Switch-on point
Factory setting
Active
CE1P2284en
10.07.2002