EB 5573-1 EN 101
System-wide functions
Note:
When weather-compensated control with gradient characteristic is used, the return
ow temperature is limited to a xed value by equating the 'Base point for return ow
temperature' and 'Max. return ow temperature' (PA1, 2 > P07 and P13) parame-
ters.
Functions WE Conguration
Return ow sensor RüF1/2
1.0
CO1, 2, 4 > F03 - 1
KP (limiting factor): 0.1 to 10.0
Return ow temperature limitation with P
algorithm*
0 CO5 > F16
* If the controller indicates CO5 > F00 - 1, any access to the return ow, ow rate and capacity settings
is locked.
Parameters WE Parameters: value range
Return ow gradient 1.2 PA1, 2 > P11: 0.2 to 3.2
Return ow level 0.0°C PA1, 2 > P12: –30.0 to 30.0°C
Base point for return ow temperature 65.0°C PA1, 2 > P13: 5.0 to 90.0°C
Max. return ow temperature 65.0°C PA1, 2, 4 > P14: 5.0 to 90.0°C
or
Parameters WE Parameters: value range
Return ow temperature, points 1 to 4 65.0°C PA1, 2 > P05: 5.0 to 90.0°C
NOTICE
To ensure that the preset return ow temperature limit can be met, make sure that the
heating characteristic is not adjusted to ascend too steeply, the speed of the circula-
tion pumps is not set too high and the heating systems have been balanced.
8.5 Condensate accumulation control
Activate the damping 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.
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