Water Pump Control
When a circuit is active (in Comfort, Economy, Antifreeze mode), the associated pump in the “Circuit Water Pump Management” section is switched on:
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It is possible to enter a delay between the time when the circuit is switched on and the time when the pump is switched on via the parameter Delay ON (seconds); for example, it is possible to enter a delay of a few minutes to allow the header of a manifold to open before the pump is switched on.
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This graph illustrates the relationships between the time when the circuit is switched on/off, the switching on of the pumps, the switching on of the valve and the sources associated with the circuit:
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The individual pump is seen as PUMP A and it is possible, if the pump has one, to assign to an input of the REG or its I/O modules the pump block signal of the pump itself and configure it to Water Pump A Input Block (see ANALOG AND DIGITAL INPUT MULTIPLEXER).
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The way these inputs are interpreted, depends on the setting of parameter P. Twin/P. Twin Blk NC.
Note
It is possible to achieve the same result by inverting the digital input Water Pump A Input Block: select REG / IA1 instead of REG IA1, as indicated in the example.
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Mixing Valve Control
Each Circuit/Manifold can manage a mixing valve with 3-point or 0/10V control.
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0/10 V Valves
In the case of 0/10V valves, the PID output is the valve position!
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For 3-point valves it is possible to consider a shut time to be set on Configuration Page 2, after that the closing relay is also released:
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So if the shut time is 60 seconds, after this period both the open and closed valve relays will be open, so no more current will flow to the valve.
For both valves, a dead band can be considered, which is always set in Configuration 2:
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The dead band (delta K) is a range within which no corrections are made to the PID output, essentially ignoring the error. If it is = 0, it is not taken into account.
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If the Temperature Limit on the Circuit Page is not set, the parameters for overheatin overheating control in Configuration 2 are not taken into account!
ConverselyVice versa, if the parameters in Configuration 2 are not set, but the limit temperature is set, the oveheating overheating control does not work. All 3 parameters for overheating control must be set, otherwise the alarm will not appear.
Once the overheating alarm is reached, it is not enough for the circuit probe to cool down, the system must also be switched off and on again!
Gestione delle sovratemperature del circuito
Se la Temperatura Limite nella Pagina Circuito non viene impostata i parametri per il controllo della sovratemperatura in Configurazione 2 non vengono considerati!
Viceversa se i parametri in Configurazione 2 non vengono impostati, ma la temperatura limite sì, il controllo delle sovratemperatura non funziona. Devono essere impostati tutti e 3 i parametri per il controllo della sovratemperatura altrimenti l’allarme non comparirà.
Una volta raggiunto l’allarme di sovratemperatura non basta che la sonda del circuito si raffreddi, bisogna anche spegnere e riaccendere l’impianto!
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I tempi indicati si sommano, quindi se si è inserito 10 secondi per ciascuno, se entro 30 secondi la temperatura non rientra sotto il massimo ammesso il sistema segnalerà per il circuito x l’allarme di sovratemperatura.
Attenzione
L’allarme di sovratemperatura si presenta anche se lo stesso circuito viene chiamato a lavorare contemporaneamente sia in riscaldamento sia in raffrescamento.
Gestione della Condensa
In merito al Limite di Correzione del Dew Point della sezione “Parametri Gestione Valvola” della Pagina Circuiti vedere GESTIONE DELLA CONDENSA.
Compensazione Ambiente
In merito al Limite di Compensazione ambientale della sezione “Parametri Gestione Valvola” della Pagina Circuiti vedere COMPENSAZIONE AMBIENTEPHOTO TBD
The indicated times are added together, so if 10 seconds is entered for each, if within 30 seconds the temperature does not fall below the maximum allowed, the system will signal an overheating alarm for circuit x.
Warning
The overheating alarm also occurs if the same circuit is called upon to work in both heating and cooling mode at the same time.
Dew Point Management
Concerning the Dew Point Correction Limit of the “Valve Management Parameters” section of the Circuits Page, see DEW POINT MANAGEMENT.
Ambient Compensation
Concerning the Ambient Compensation Limit in the “Valve Management Parameters” section of the Circuits Page see AMBIENT COMPENSATION.
AVAILABLE DIGITAL PUTPUTS
The digital outputs available for the circuits are:
· 64. Pump A circ. 1 - switching on and off the circulator/pump A of manifold 1
· 65. Valve Open Circ. 1- opening of 3-point mixing valve of manifold 1
· 66. Valve Close Circ. 1 - closing mixing valve 3 points of manifold 1
· 67. Pump B Circ. 1 - switching circulator/pump B of manifold 1 on and off
68 to 95 are the same for circuits 2 to 8.
USCITE DIGITALI DISPONIBILI
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da 68 a 95 sono le stesse per i circuiti da 2 a 8.
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USCITE ANALOGICHE DISPONIBILI
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da 2 a 8 sono la stessa per i circuiti da 2 a 8.
AVAILABLE ANALOGUE OUTPUT
The analogue output available for the circuits is:
· 1. Circuit 1 - corresponds to the 0/10 V mixing valve position of manifold 1
is the same for circuits 2 to 8.
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