Gradient Characteristic - Samson TROVIS 5500 Operating Instructions Manual

5.1.1 Gradient characteristic

Basically, the following rule applies: a decrease in the outdoor temperature causes the flow tem-
perature to increase.
By varying the parameters Gradient and Level, you can adapt the characteristic to your indivi-
dual requirements: An increased Gradient causes the flow temperature to increase; a lower
Gradient causes a lower flow temperature. The Level parameter shifts the heating characteristic
parallely up or down. Outside the times-of-use, reduced set points are used for control:
Reduced flow set point = Flow set point – Set-back difference
The Max. flow temperature and Min. flow temperature parameters mark the upper and lower li-
mits of the flow temperature.
Examples for adjusting the characteristic:
4
Old building, radiator design 90/70:
4
New building, radiator design 70/55:
4
New building, radiator design 55/45:
4
Underfloor heating depending on arrangement: Gradient smaller than 0.5
2
[Übersicht > Service > Heizkreis 1...3]
This menu can only be selected after the application key number has been entered!
Parameter
Kennlinienart (type of character-
istic) = Steigung (gradient)
2
[Übersicht > Parameter > Heizkreis 1...3]
Parameter
Steigung
(gradient)
Niveau
(level)
Absenkdifferenz
(set-back difference)
Vorlauftemp. max.
(max. flow temperature)
Vorlauftemp. min.
(min. flow temperature)
WE Adjustment range
Steigung Four-point, gradient, fixed set point
WE Adjustment range
1.8
0 °C –30 to 30 °C
15 °C
90 °C
20 °C
Functions of the heating circuit
Gradient approx. 1.8
Gradient approx. 1.4
Gradient approx. 1.0
0.4 to 3.2
0 to 30 °C
20 to 120 °C
20 to 120 °C
29
EB 5571-2 EN