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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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:PHOTO TBD
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This For this special zone manages , temperature and humidity in different readings and setpoints are interpreted in a particular 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.
PHOTO TBD
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“Temperature” displays the current value of the VOC Index. When powered on, the VOC sensor reads a value of 40. During operation, VOC Index value below 40 (minimum 0,4) refers to improvement in indoor air quality; values above 40 (maximum 200) refers to deterioration in indoor air quality.
“Relative humidity” is not used and always displays as “N/C” reading.
The Comfort and Economy temperature setpoint are the VOC Index thresholds: typically, the Economy threshold will be lower than the Comfort threshold because the Economy air exchange speed is generally lower than the Comfort one. Specifically, if the VOC Index value exceeds the Economy threshold, the CMV starts at the Economy speed; if the Comfort threshold is exceeded, the CMV starts at the Comfort speed. To switch to the lower speed, the value must drop below the treshold/hysteresis.
The humidity setpoint represents the hysteresis of the VOC Indec for threshold transitions between Comfort and Economy, and from Economy to OFF
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Therefore, it is the VOC Index variation that activates the Economy and Comfort speed above once the thresholds are exceeded and switches the speed back to OFF and or Economy if the value drops below the threshold – the /hysteresis:PHOTO TBD
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The economy Economy and comfort 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).
The configuration of the Dehumidifier page and the outputs (DO or AO) is the same as step 1, the only difference is that they are activated by threshold and not by timetable.The ppb value is only for display in the HR% column of the zone, but has no effects on regulation.
3. Combination of timetable and VOC sensor
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