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EM-box (damper solution)
If you want to run the cooker hood via the ventilation unit, you may find the air volume to be insufficient for cooker hood extraction.
If you install an EM-box, you can regulate the extract air when the cooker hood is on, so that less air is drawn from, for instance, the
bathroom and the utility room. This will allow enough air for the cooker hood to extract efficiently.
The EM-box is fitted with a metal filter that cleans the air in the cooker hood of grease particles efficiently. This helps protect the ven
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tilation unit.
The system works as follows:
When you turn on the cooker hood, user selection 1 or 2 will be activated. The ventilation unit increases ventilation and sends an output
signal to the EM-box that it is to close the damper 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.
When balancing, the small stoppers on the damper should be placed so basic ventilation of the other rooms is maintained.
ATTENTION
The EM-box solution cannot be used if the fire automation system has been activated in the software.
ATTENTION
Information on connecting User selection output and GND can be found under: Overview of connection boxes.
NB: Wire (230V power supply) for the EM-box damper is not included.