The REG System can manage controlled mechanical ventilation (CMV) units both via timetable and via VOC sensor and via a combination of both.
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Once the CMV is enabled, we move on to timetable creation on the Dehumidifiers page, where for example, we choose to dedicate a Dehumidifier to CMV management, then in Auto Ventilation Timetable Function (CMV) we associate a timetable, e.g., timetable 01 “Living Room”04 “Ventilation”:PHOTO TBD
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Then it is possible to set 3 speed values for the Ventilation (CMV): Economy, Comfort, and Boost. This setting can be made if the speed on the CMV is changed by the REG via the 0/10V outputs connected to a 0/10V input on the ventilation unity board.
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In the Actual Status can be seen the tick on the renewal request if active and at what speed.
Finally, in outputs it necessary to associate (in the pages REGDIN OUTPUTS or IO/A or IO/B OUTPUTS) the dry ON/OFF contact as DO and the speed as analog output:
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The speed can also be sent to the CMV via digital output (low = economy; medium = comfort; high = boost).
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Finally, on the timetables page within the associated timetable (in this case, Timetable 1 Living room), the OFF, Economy, and Comfort program can be set
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2. Management via VOC sensor
VOC sensor (code REG-AQ-Sxx) must be configured with the address from 8A to 8F (as indicated in the product data sheet) without set (s/set) as it has no display and associated with a dedicated zone for renewal within the Zones – Configuration Zone/1 page; furthermore, the ventilation unit must be associated as integration unit:
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This special zone manages temperature and humidity in different way:
In temperature there are the ppm (parts per million) of CO2, so if you read 40 that’s 400 ppm.
In humidity you can see the VOC parameters in ppb (parts per billion), then if you read 30 that’s 300 ppb of VOC.
The humidity set point is the hysteresis (multiplied by a factor of 10) of threshold switching between Economy/OFF and Comfort/Economy
Comfort and Economy set point are thresholds, so if I exceed the Economy threshold the CMV starts at Economy speed, if i exceed Comfort it starts in Comfort, to switch to lower speed it must drop below the threshold – the hysteresis.
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So, it is the ppm variation in CO2 that activates the Economy and Comfort speed above the thresholds and switches the speed back to OFF and Economy if the value drops below the threshold – the hysteresis:
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The economy and comfort speeds are switched to the Dehumidifier page according to what is indicated in the integration column of the zone which has an associated VOC sensor (on the Zone – Configuration/1 page).
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