Function
WE Configuration
Return flow sensors RüF1/2 1
1.0
CO1, 2, 4 -> F03 - 1
Limiting factor/ 0.1 to 10.0
Return flow temperature
limitation with P algorithm
0 CO5 -> F16
Parameters
WE Parameter level/Range of values
Gradient, return flow 1,2 PA1, 2 / 0.2 to 3.2
Level, return flow 0.0 °C PA1, 2 / –30 to 30 °C
Return flow temperature foot 65 °C PA1, 2 / 5 to 90 °C
Max. return flow temperature 65 °C PA1, 2, 4 / 5 to 90 °C
or
Parameter
WE Parameter level/Range of values
Return flow temp. points 1 to 4 65 °C PA1, 2 / 5 to 90 °C
Note!
To ensure that the preset return flow temperature limiting value can be met, make sure that
– the heating characteristic is not adjusted to ascent too steeply,
– the circulation pumps are not adjusted to run too rapidly,
– the heating systems have been calibrated.
7.5 Condensate accumulation control
Activate the Limit deviation for OPEN signal function to start up condensate accumulation
plants, in particular to avoid problematic excess temperatures. The controller response to set
point deviations which cause the primary valve to open is attenuated. The controller response
to set point deviations which cause the control valve to close remains unaffected.
Function
WE Configuration
Limit deviation for OPEN signal 0
2 °C
CO1, 2, 4 -> F13 - 1
Max. system deviation / 2 to 10 °C
Note!
The condensate accumulation control function can only be activated when no on/off control
has been configured, i.e. when CO1, 2, 4 -> F12 - 1 applies.
76 EB 5575 EN
System-wide functions
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