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DTBU damper solution
If you want to run the cooker hood via the ventilation unit, in some cases there may be insufficient air for cooker hood extraction.
An EM-box solution can solve this. However, if there is insufficient space in the installation for an EM-box, the alternative may by to
connect up a DTBU damper in the duct system. It has the same function except from having no integral particle filter. You can, however,
purchase a filter box with a steel filter that you can install in the duct system.
The DTBU damper regulates extraction so that less air is drawn from, for instance, the bathroom or the utility room. This will allow
enough air for the cooker hood to extract sufficiently.
The system works as follows:
When you switch on the cooker hood, User selection 1 or 2 will be activated. The ventilation unit increases ventilation and sends an out
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put signal to the DTBU damper that it is to close for extraction from other rooms. However, the damper does not close completely and
a reduced level of air extraction from other rooms will still take place.
OBS
DTBU-spjæld løsningen kan ikke anvendes, hvis brandautomatikken er aktiveret i softwaren.
ATTENTION
Connections of User selection output and GND can be seen under: The overview of connection boxes.
NB! Cable for 230V supply for EM-box damper is not included.