Heating Circuit Values; Parallel Displacement Of The Heating Curve; Room Influence - Siemens RVA47.320 User Manual

Benefit
Description
Setting
Effect
Example:
Parallel displacement
Benefit
76/166
Siemens Building Technologies
HVAC Products

Heating circuit values

4.27

Parallel displacement of the heating curve

•
Adjustment of controller's temperature scale to the actual plant conditions.
Produces a parallel displacement of the heating curve in order to achieve a better
match of room temperature setpoints and actual room temperatures.
1. Press the operating line selection buttons to select operating line 100.
2. Press the + / – buttons to set the parallel displacement..
Setting range
-4.5...+4.5
By changing the value entered, all room temperature setpoints will be appropriately
raised or lowered. This allows the room temperature setpoints to be matched to the
effective room temperatures.
If a nominal room temperature setpoint of 20 °C adjusted on the controller always
produces a room temperature of 22 °C (independent of the prevailing outside
temperature), displace the heating curve downward by 2 °C.
Each setpoint readjustment, be it by changing the setting value or the operational level,
corresponds to a parallel displacement of the heating curve.
TV
°C
100
90
80
70
60
50
40
30 30
20 10
10
10
0
TV Flow temperature
TA Composite outside temperature
TRw Room temperature setpoint
4.28

Room influence

•
More accurate room temperature control due to temperature checkback signal from
the space
•
Use of heat gains
•
Possibility of boost heating and quick setback
Basic Documentation RVA47.320
Description of the heating engineer settings
Unit
°C (K)
0 -10 -20
0
Factory setting
0.0
°C
-30
TA
CE1P2379E
15.07.2002