Basic Documentation

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Siemens RDU341 Basic Documentation CE1P3172en
Building Technologies 2017-02-17
3.10.12 Emergency control (LTE Mode only)
In case of smoke or fire the damper can be overridden via KNX.
The necessary information is provided by the function block “HVAC Emergency
Mode”
The table below describes the behavior of the controller output.
# Datapoint value Damper
0 Normal Normal operation
1 EmergPressure Fully open
2 EmergDepressure Fully closed
3 EmergPurge Fully open
4 EmergShutdown Fully closed
5 EmergFire Fully closed
Emergency signals have highest priority and command the control output
accordingly. Any ongoing function like fan-overrun etc. will be stopped immediately.
The priority is as follows:
1. Smoke (Emergency 1..4)
2. Fire (Emergency 5)
3. Fan overrun (Emergency 0 and el heater fan overrun function is active)
4. Normal operation (Emergency 0 and operation by operating mode button)