Parameters overview | 4
B1820023_en | Service handbook Lambdatronic H 3200 - T4e 73
4.12.2 Circulation pump - Temperatures
If the return sensor is present
▪ NO: The circulation pump is controlled according to
time program. In conjunction with the use of a flow
valve, the circulation pump is also activated at a signal
from the flow valve.
▪ YES: The circulation pump is controlled according to
time program and temperature at the return circulation
line. In conjunction with the use of a flow switch, the
circulation pump is also activated at a signal from the
flow switch.
NOTICE!Connect the flow sensor as the return
sensor!
The return temperature in the circulation pipe at
which the pump is switched off
When the set temperature at the return circulation line is
reached, the circulation pump is deactivated (3°
hysteresis).
NOTICE!Parameter only relevant when using a return
feed sensor in the circulation line!
Circulation pump run-on
If the flow stops at the flow switch, the circulation pump
still remains active for the time set.
If the flow switch is implemented as a push button, after
the button is pressed the circulation pump still continues
to run for the specified time.
NOTICE!Parameter only relevant when using a flow
switch!
4.12.3 Circulation pump - Times
Ü "Setting times" [}106]
4.12.4 Circulation pump - Service
Sensor input of circulation return sensor
Sensor input to which the sensor at the return line of the
circulation is connected.
Which sensor is used for the flow switch
Sensor input to which the flow switch is connected.
If the flow switch is implemented as a push button,
connect the external button directly to the sensor input.
Pump output of circulation pump
Pump outlet to which the circulation pump is connected.
Control of circulation pump
Definition of control signal for pump type used.
Ü "Activation options of pump outlets" [}96]
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