User Guide

5
Operating Central Function
Fire Department Emergency Functions
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Siemens Desigo TRA User Guide A6V10415564_en_a_21
Building Technologies 2015-06-23
5.1.5 Controlling Ventilation
During an emergency, the fire department can control ventilation using the
following operating modes:
 Automatic
 Emergency shutdown (lock)
 Purge (supply air, extract air fan on, dampers, and VAV dampers open
 Positive pressure
 Negative pressure
1. In the System Browser, select Application View.
2. Select Applications > Logics > Central Functions > [Hierarchy Name] > HVAC
[Category] > [Emergency ventilation (CenEmgHvac)].
3. In the Contextual pane, click the Operation tab.
 Displays emergency ventilation properties.
4. Select Command Value.
5. Click Manual.
6. In the Value drop-down list, select an option:
– None
– Emerg.off
– Purge
– Negative press.
– Positive press.
7. Click Send.
 The message Command successful is displayed.
NOTE:
An emergency command is executed at priority 2 or 3.