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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To manage CMV it is necessary to enable the CMV enable on the Configuration/1 - System Settings page:
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as with other global enabling (DHW, System, and Seasonal set), the CMV can also be managed via an external dry contact on the CMV Enable Channel:
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1. Timetable management
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 Ventilation Timetable (CMV) we associate a timetable, e.g., timetable 01 “Living Room”:
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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
Il sensore VOC (codice REG-AQ-Sxx) deve essere configurato come indirizzo da 8A a 8F (come indicato nella scheda tecnica di prodotto) senza set (s/set) in quanto privo di display e associato ad una zona dedicata al rinnovo all’interno della pagina Zone - Configurazione Zona 1, inoltre l’unità di ventilazione deve essere associata come unità di integrazione:
VOC sensor (code REG-AQ-Sxx) must be configured as 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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Questa zona speciale gestisce temperatura ed umidità in maniera diversa:
Nella temperatura si vedono i ppm (parti per milione) di CO2 quindi se si legge 40, sono 400 ppm
Nell’umidità si vedono i parametri di VOC in ppb (parti per bilione), quindi se si legge 30 sono 300 ppb di VOC
Il set di umidità è l’isteresi (moltiplicata per un fattore 10) di passaggio di soglia tra Economy/OFF e Comfort/Economy
I set point di Comfort e Economy sono delle soglie, quindi se supero quella di Economy la VMC parte con la velocità Economy, se supero Comfort parte in Comfort, per passare alla velocità inferiore deve scendere sotto la soglia - l’isteresi
This special zone manages temperature and humidity in different way:
· In temperature are shown the ppm (parts per million) of CO2, so if you read 40 that’s 400 pmm.
· In humidity 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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Quindi è la variazione di ppm di CO2 che attiva sopra le soglie la velocità Economy e Comfort e riporta in OFF e Economy le velocità se il valore scende sotto la soglia - l’isteresi:
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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Le velocità economy e comfort vengono passate nella pagina Deumidificatore in base a quanto indicato nella colonna integrazione della zona che ha un sensore VOC associato (nella pagina Zone - Configurazione zona 1).
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Diverso invece se l’orologio viene associato alla zona direttamente e non nella pagina deumidificatori, in questo caso l’orologio e le soglie lavorano in AND, quindi se l’orologio è in OFF e il sensore VOC supera la soglia Economy la VMC non si attiverà.
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).
The configuration of the Dehumidifier page and the outputs (UD or UA) is the same as step 1, only that they are activated by threshold and not by timetable.
The ppb value is only for display in the UR% column of the zone, but has no effects on regulation.
Combination of timetable and VOC sensor
If both point 1 and point 2 are configured on the same CMV, the speed and ON/OFF is determined by the OR condition between the two, so the timetable may be in OFF, but if the VOC sensor exceeds the Economy threshold, the CMV activates at Economy speed.
It is different if the timetable is directly associated with the zone and not in the dehumidifiers page: in this case, the timetable and the threshold operate in AND, then if the timetable is in OFF and the VOC sensor exceeds the Economy threshold, the CMV will not be activated.