User’s Manual xLogic SuperRelay
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The fans are monitored by means of flow sensors. If no air flow is registered after a short
delay time has expired, the system is switched off and an error message is generated,
which can be acknowledged by pressing the off button.
Fan monitoring requires an analyzer circuit with several switching devices, in addition to
the flow sensors. A single xLogic device can replace this analyzer circuit.
5.3.2The scheme of ELC-18 AC
The circuit diagram of ventilation system: