108
EQJW146F002 EN
System-wide functions
cuits of the controller to be deactivated. The set point reading (flow temperature of the heat-
ing, charging temperature) blinks to indicate that a return flow limitation is active in the con-
trol circuit concerned.
When outdoor-temperature-compensated control with gradient characteristic is used, the re-
turn flow temperature is limited to a fixed value by equating the 'Base point for return flow
temperature' and 'Max. return flow temperature' (PA1, 2 > P13 and P14) parameters.
Functions
WE
Configuration
Return flow sensor RüF1/2
1.0
CO1, 2, 4 > F03 - 1
KP (limiting factor): 0.1 to 10.0
Return flow temperature limitation with P
algorithm*
0
CO5 > F16
* If the controller indicates CO5 > F00 - 1, any access to the return flow, flow rate and capacity settings
is locked.
Parameters
WE
Parameters: value range
Return flow gradient
1.2
PA1, 2 > P11: 0.2 to 3.2
Return flow level
0.0 °C
PA1, 2 > P12: –30.0 to 30.0 °C
Base point for return flow temperature:
65.0 °C
PA1, 2 > P13: 5.0 to 90.0 °C
Max. return flow temperature
65.0 °C
PA1, 2, 4 > P14: 5.0 to 90.0 °C
or
Parameters
WE
Parameters: value range
Return flow temperature, points 1 to 4
65.0 °C
PA1, 2 > P05: 5.0 to 90.0 °C
To ensure that the preset return flow temperature limit can be met, make sure that the heating
characteristic is not adjusted to ascend too steeply, the speed of the circulation pumps is not
set too high and the heating systems have been balanced.
Note
Note
