MP2000 AIR CONDITIONERS

Sistema di controllo a microprocessore per condizionatori d'aria • Air conditioners microprocessor control system

- da "Program set" selezionare "Limit thermostat enable Y".

Quando la temperatura di mandata aria raggiunge i 5°C la funzione blocca i compressori. Se la temperatura di man- data scende ulteriormente a 3°C la funzione blocca l'unità. Le temperature di intervento sono fisse e non possono essere modificate. L'isteresi è fissa ad 1°C.

La funzione genera l'allarme AL36 "Limit thermostat" a ripristino manuale.

Controllo temperatura uscita acqua per unità a pompa di calore DXW/P (eprom CPX).

Per queste unità, oltre a quanto descritto precedentemen- te, è possibile controllare anche la temperatura di uscita acqua dallo scambiatore gas/acqua per evitarne il ghiacciamento.

Per abilitare la funzione è necessario quanto segue:

- installare la sonda di temperatura uscita acqua sull'in- gresso J2 - B3 della Board "A".

-da "Unit configuration" selezionare "Probe selection" ed abilitare l'ingresso "Outlet water temp. Y".

Sulle unità DXW/P, con l'installazione della sonda di tem- peratura uscita acqua, si attiva automaticamente la funzio- ne antigelo.

Quando la temperatura di uscita acqua raggiunge i 3°C (valore di default) la funzione provvede a bloccare i com- pressori. L'isteresi è fissa ad 1°C.

Nel caso si voglia modificare il valore di intervento, da "Program set" selezionare "Outlet water limit thermostat" ed impostare il nuovo valore.

La funzione general l'allarme AL36 "Limit thermostat" a ripristino manuale.

INVERSIONE SENSO AVVIAMENTO COMPRESSORI

Il programma provvede automaticamente ad invertire il senso di avviamento dei compressori per equalizzare le ore di funzionamento.

Di conseguanza, quando il programma richiede l'attivazio- ne di un compressore, si attiverà il compressore con il minore numero di ore di funzionamento.

La funzione è abilitata di default ma può essere disattivata. Per disattivare la funzione selezionare "General parameter" quindi con il tasto FRECCIA selezionare "Rotation compr." e premere ENTER, impostare il valore su "N" tramite il tasto FRECCIA e premere ENTER per confermare il dato.

Premere HOME per uscire dalla funzione.

-from "Program set" select "Limit thermostat enable Y". When the air delivery temperature reaches 5°C, the func-

tion locks the compressors. If the air delivery temperature drops down to 3°C, the function locks the unit.

The temperature values are fixed and a value modification

is not possible.

The hysteresis is fixed at 1°C.

The function generates the AL36 "Limit thermostat" alarm, with manual reset.

Control of the outlet water temperature for DXW/P heat pump units (eprom CPX).

For these units, besides what above stated, it is also possible the outlet water temperature control of the gas/ water heat exchangers, in order to avoid freezing.

To enable the function follows these instructions:

- install the water outlet temperature sensor on input J2 - B3 of Board "A".

- from "Unit configuration" select "Probe selection" and enable the inlet "Outlet water temp. Y".

On DXW/P units, by installation of the water outlet tempera- ture sensor, the antifreeze function is automatically ena- bled.

When the water outlet temperature reaches 3°C (default value), the function locks the compressors.

The hysteresis is fixed at 1°C.

In case you need a set modification, from "Program set" select "Outlet water limit thermostat" and digit the new value.

The function generates the AL36 "Limit thermostat" alarm with manual reset.

COMPRESSORS' STARTING SEQUENCE INVERSION

The program automatically inverts the compressors' start- ing sequence, in order to balance the working hours. Consequently, when the program requires a compressor start, the compressor with less working hours will be activated.

The function is enabled by default, but it can be deacti- vated.

For function deactivation select "General parameter" than "Rotation compr." by ARROW key.

Press ENTER and set the value on "N" by ARROW key . Press ENTER to confirm the data.

Press HOME for exit.

RC GROUP - 149_ItEn.0102

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Dell MP2000 manual Da Program set selezionare Limit thermostat enable Y, Inversione Senso Avviamento Compressori
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MP2000 specifications

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