Outside the times-of-use, reduced set points are used for control:
The reduced flow set point is calculated as the difference between the adjusted values for
Day set point
(rated room temperature) and
Night set point
(reduced room temperature).
The
Max. flow temperature
and
Min. flow temperature
parameters mark the upper and lower
limits of the flow temperature. A separate gradient characteristic can be selected for the limi-
tation of the return 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 0.5
Note: Particularly for control operation without room sensor, the room temperatures set for
day (Day set point) and night (Night set point) only become effective satisfactorily when the
heating characteristic has been adapted to the building/heating surface layout.
Function
WE Configuration
4-point characteristic 0 CO1, 2, 3 -> F11 - 0
Parameters
WE Rotary switch / Range of values
Day set point 20 °C Top, middle, bottom / 0 to 40 °C
Night set point 15 °C Top, middle, bottom / 0 to 40 °C
Parameters
WE Parameter level / Range of values
Gradient, flow 1.8* PA1, 2, 3 / 0.2 to 3.2
Level, flow 0 °C PA1, 2, 3 / –30 to 30 °C
Min. flow temperature 20 °C PA1, 2, 3 / 5 to 130 °C
Max. flow temperature 90 °C* PA1, 2, 3 / 5 to 130 °C
* With CO1, 2, 3 -> F05 - 1, the following applies: Gradient, flow / 0.2 to 1.0 (1.0)
Max. flow temperature / 5 to 50 °C (50 °C)
EB 5579 EN 71
Functions of the heating circuit
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