E' possibile monitorare la temperatura di una sorgente e determinare se questa non è in grado di fornire l'energia richiesta; quando ciò avviene la sorgente viene considerata degradata; quando una sorgente è in tale stato si può scegliere se lasciarla accesa o spegnerla, ma vengono anche attivate la sorgente (o le sorgenti) che vengono dopo di lei in ordine di priorità (vedere PRIORITA' DELLE SORGENTI).
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Una sorgente è considerata "degradata" quando per il tempo impostato dal parametro Tempo Degradata la temperatura rilevata è inferiore (in riscaldamento)/superiore (in raffrescamento) rispetto al setpoint desiderato di quanto definito dal parametro Delta.
It is possible to monitor the temperature of a source and determine if it is unable to supply the required energy; when this occurs, the source is considered degraded; when a source is in this state, it is possible to choose whether to leave it on or switch it off, but the source (or sources) that come after it in order of priority are also activated (see PRIORITA' DELLE SORGENTI).
This makes it possible to support a source that fail to satisfy the system.
For degraded source monitoring to operate, it is necessary that
· The source is equipped with a probe, set to “to control activation”
· The source setpoint settings are correct
To determine whether a source is degraded, the system relies on both temperature and time:
A source is considered “degraded” when for the time set by the Degradation Time, the measured temperature is lower (in heating)/higher (in cooling) than the desired setpoint by the Delta parameter.
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La tendina a fianco del Tempo degradata (espresso in secondi):
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Il seguente diagramma illustra il criterio:
The dropdown menu next to the Degradation Time (expressed in seconds):
· INCL WIN/INCL SUM = inclusive in winter and in summer (the degraded source is not removed from the request)
· EXCL WIN/INCL SUM = exclusive in winter and inclusive in summer (the request is removed from the degraded source in winter and kept in summer)
· EXCL WIN/EXCL SUM = exclusive in winter and in summer (the request is removed from the degraded source)
· INCL WIN/EXCL SUM = inclusive in winter and exclusive in summer (the request is kept in winter and removed in summer from the degraded source)
Allows you to choose whether the degraded source can remain switched on or not.
The following diagram illustrates the parameter:
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Quando una sorgente è dichiarata "degradata" il sistema:
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Lo stato di "degradato" viene rimosso quando la temperatura di sorgente ritorna al setpoint richiesto più il valore di isteresi.
Attenzione
Se il parametro Tempo Degradata è impostato su zero la funzione di determinazione della sorgente degradata è disattivata.
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Se si vuole cambiare bisogna spegnere l’impianto (o quanto meno la richiesta alla sorgente), cambiare il tempo degradata e poi riaccendere.
Nota
Opentherm come sorgente non può degradare, nè come ACS, nè come Riscaldamento/Raffrescamento. Solo le sorgenti 1, 2 e 3 possono degradare tra di loro e con la sorgente Opentherm.
When a source is declared “degraded”, the system:
· Switches the source off or leaves it on according to what has been selected
· Enables the source (or sources) following in the priority scale (these must also have their set points critically set for them to be activated once enabled)
The “degraded” status is removed when the source temperature returns to the required setpoint plus the hysteresis value.
Warning
If the Degradation Time parameter is set to zero, the degraded source determination function is deactivated.
Once the countdown (Degradation Timer) has started, which can be seen in the “Source Status” section, it cannot be changed. For example, if you put in 600 seconds and got to 400, and realise that this is too much, putting in 100 will not change the countdown to 100, but will decrease from 400 seconds.
If you want to change, you have to switch off the system (or at least the request to the source), change the degradation time and then switch back on.
Note
Opentherm as a source cannot degrade, neither as DHW nor as Heating/Cooling. Only sources 1, 2, and 3 can degrade with each other and with the Opentherm source.