V 01/2016
RT100 Control System Design and Function 9
The leak-stop operation can be cancelled by pressing the ON/OFF but-
ton. When the ON/OFF button is pressed again (wait until the display
reads OFF), the unit switches back to normal operation.
Clearance for the Leak-Stop Function
The leak-stop function is not permitted with every device (e.g. if a change
in the direction of rotation of the delivery pump is not possible). The
clearance of the leak-stop function is set in the parameter menu.
DANGER
The leak-stop operation is an emergency operation and may only be switched on
or cleared for devices intended for the purpose. A leak-stop operation in the
case of devices not intended for the purpose can cause a fire.
Draining
The consumer device can be drained with the delivery pump (suction) or
with compressed air (blowing out); (setting in the parameter menu).
Drainage by Suction with Pump
The suction program allows the draining of the consumer connected at
the temperature control unit and is activated by pressing the F3 key and
selecting the suction symbol. The pump is switched off and when the
pump run-down time elapses, switched on again in the opposite direction.
The consumer is drained through suction during the defined period
(draining time).
Draining is only possible if the temperature of the heat transfer medium is
below the programmed run-on temperature value. If that is not the case,
the heat transfer medium is first cooled to this value.
Blowing out with Compressed Air
The blowing out program makes it possible to drain the consumer con-
nected to the temperature control unit with compressed air. Blowing out is
activated after the pump run-down time has elapsed and directs com-
pressed air through the consumer. The temperature control unit switches
off automatically after the set period (draining time) has elapsed.
The suction or blowing out program can be cancelled by pressing the
ON/OFF button. When the ON/OFF button is pressed again (wait until the
display reads OFF), the unit switches back to normal operation.
NOTE
In the case of pressurised water units, the pressure release valve closes 5 °C
above the run-on temperature value (max. 85 °C) and opens at the programmed
run-on temperature value during the cooling process.
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