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4.3.5 Frost Protection WW Heating Coil
Start Frost Protection:
•
Under 15 °C: Valve is opened linearly with T-Frost protection probe, pump on
•
Under 7 °C: switch off ventilation, close the outside air flaps, open valve 100%
End Frost Protection:
•
Temperature frost
protection sensor above + 15 ° C
4.3.6 Filter monitoring
Dynamic filter monitoring is used for checking the filter status. Based on the chosen filter type and the working point, maximum
allowed filter pressure drop is calculated. If the pressure drop over the filter is greater than the allowed pressure drop at that
working point, a filter alarm is triggered.
4.4 Priorities
If several ventilation requirements are active at the same time, the ventilation unit runs with the respective ventilation level,
which has the highest priority. This means, for example, that the external switching contact overrides all other ventilation
requirements.
Priority list (highest up):
•
External switching contact
•
Fire/Emergency Contact
•
Manual operation with HMI or via building control systems (Bacnet, Modbus)
•
External switching Contact Boost Speed
•
External switching Contact Normal Speed
•
External switching Contact Reduced Speed
•
External switching Contact Circulation Air
•
Timer Boost Speed
•
Timer Normal Speed
•
Timer VOD Speed
•
Timer Reduced Speed
•
Timer Recirculation
•
Free Cooling (Night Cooling)
Temperature frost protection
sensor
Heating Valve Signal
15°C
Содержание EVO-R
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