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The FWC 5 can control special pumps with 0-10V output.
6.7.1 Max. speed
Set the maximum speed of the pump. During the adjustment the pump is running with the
according speed and the
fl
ow can be measured. 100% approximate 10V, 90% 9V etc.
Settings range: 70 to 100% / Default: 100%
6.7.2 Min. speed
The minimum speed of the pump. During the adjustment the pump is running with the ac-
cording speed and the
fl
ow can be measured.
Settings range: 12 to max speed -5% / Default: 17%
6.7.3 Pump u0
Required for pumps with cable break detection.
Some pumps are running with slow speed when no voltage is present. This setting is used
to determine the minimum voltage to switch the pumnp off.
Settings range: 0 to max 1,5V / Default: 0,7V
6.7 Speed control
This function should be activated and parametrised by a specialist only. The
speci
fi
cations of the pump manufacturer have to be observed.
Caution
Special functions
To prevent the accumulation of limescale, the circulation pump can continue to rinse
the heat exchanger after a tapping for a short time.
Settings range: On/Off / Default: Off
The function of relay 5 is freely selectable.
Thermostat
: Temperature- and time controlled additional heating. Necessary settings
are shown in menu 5.
Fault indication
: Relay is switched on when a malfunction occurs.
AlwaysOn
: Relay is always powered on.
Settings range: Off, Thermostat, Fault indication, AlwaysOn
Default: Off
6.8 Limescale protection
6.9 Relay 5