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Siemens Building Technologies
Basic Dokumentation RVA63.280, RVA53.280
CE1P2374E
Landis & Staefa Division
19.04.2001
1.19
Slope of heating curve (S)
Constant room temperature in spite of outside temperature variations.
The controller generates the flow temperature setpoint only for heating circuit 1, based
on the selected heating curve.
Setting range
Unit
Factory setting
Heating circuit 1:
2.5...40.0
Increment
15.0
Heating circuit 2:
– – . – / 2.5...40.0
Increment
15.0
By changing the setting, the slope of the heating curve will be increased or decreased.
Entry:
– – : –
All functions of heating circuit 2 are deactivated Frost protection for the
building and the plant will not be active (frost protection for the boiler and
d.h.w. remains active).
2.5...40.0
All functions of the heating circuit are activated
Increase:
The flow temperature will be raised when the outside temperature drops
Decrease:
The flow temperature will be raised less when the outside temperature
drops
This setting also has an effect on the generation of the type of plant displayed on line
53. The switching on and off of the heating circuit through the setting – : – – or a value
changes the plant configuration accordingly.
Using the heating curve, the controller generates the flow temperature setpoint,
enabling the system to maintain a constant room temperature even without using a
room sensor.
The steeper the slope of the heating curve, the higher the flow temperature setpoint at
low outside temperatures.
Comfort is considerably enhanced when using a room sensor.
20
10
0
-10
-20
-30
90
80
70
60
50
40
30
°C
°C
40
35
30
27,5
25
22,5
20
17,5
15
12,5
10
7,5
5
2,5
100
20
00
D07
TA
TV
Heating circuit diagram
TV
Flow temperature
TA
Composite outside temperature
Benefit
Description
Setting
Effect
Note
The heating curve
Note
