Samson TROVIS 5571 - Gradient Characteristic

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: Gradient approx. 1.8
4
New building, radiator design 70/55: Gradient approx. 1.4
4
New building, radiator design 55/45: Gradient approx. 1.0
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 WE Adjustment range
Kennlinienart (type of character-
istic) = Steigung (gradient)
Steigung Four-point, gradient, fixed set point
2
[Übersicht > Parameter > Heizkreis 1…3]
Parameter WE Adjustment range
Steigung
(gradient)
1.8 0.4 to 3.2
Niveau
(level)
0 °C –30 to 30 °C
Absenkdifferenz
(set-back difference)
15 °C 0 to 30 °C
Vorlauftemp. max.
(max. flow temperature)
90 °C 20 to 120 °C
Vorlauftemp. min.
(min. flow temperature)
20 °C 20 to 120 °C
EB 5571-2 EN 29
Functions of the heating circuit