MP2000 AIR CONDITIONERS

Software per condizionatori d'aria • EPROM CZX.... • Software for air conditioners

 

production).

yH.Alarm

Offset room Umidity High alarm (14%rH)

 

Valore di umidità per l'allarme di alta umidità

 

ambiente.

 

L’isteresi è fissa a ±2% rH.

yL.Alarm

Offset room Umidity Low alarm (14%rH)

 

Valore di umidità per l'allarme di bassa umidità

 

ambiente.

 

L’isteresi è fissa a ±2% rH.

Per ulteriori informazioni fare riferimento al manuale umi- dificatore OEM_RC00.

SET "REDUCE HUMID. IN COOL POSITION"

Con il set "Reduce humid. in cool position" su "Y" (set Pro- grammabili) e nel caso di richiesta contemporanea di raffred- damento + umidificazione, il set yPe1 (10%) si imposta auto- maticamente a 20% per ridurre la quantità di vapore prodotta al fine di evitare fenomeni di condensazione del vapore nella zona a valle della batteria raffreddante.

(*)LOGICA DI CONTROLLO DEL SISTEMA DI DEUMIDIFI- CAZIONE:

La logica di controllo del sistema di deumidificazione dipende dalla configurazione della macchina e dal set "Logic dehumidification".

UNITA’ AD ACQUA REFRIGERATA: Logic dehumidification = Normaly open :

Viene attivato il relè relativo all’uscita C2 che comanda l’apertura della valvola di deumidificazione.

Logic dehumidification = Low speed normaly open:

Viene attivato il relè relativo all’uscita C2 che comanda la riduzione di velocità del ventilatore di trattamento, viene aperta la "cooling floating valve" e viene portata al 100% l’uscita P1 se il set “Analog output 1” = Cool Valve + Dehumidification.

UNITA’ AD ESPANSIONE DIRETTA:

Logic dehumidification = Low speed Normaly open:

Viene attivato il relè relativo all’uscita C2 che comanda la riduzione di velocità del ventilatore di trattamento e viene attivato il compressore 1 sempre al 100%.

Logic dehumidification = Normaly closed:

Rimane disattivato il relè relativo all’uscita C2 che comanda la valvola solenoide sulla batteria ad espansione diretta per cui la solenoide risulta chiusa (in questo modo si ottiene una riduzione della superficie di scambio della batteria con conseguente deumidificazione), e viene attivato il compres- sore 1 sempre a piena capacità.

Il relè relativo all’uscita C2 viene attivato solamente assieme al compressore 1 e/o 2 per sola richiesta di raffreddamento (in questo modo si utilizza tutta la superficie di scambio della batteria per ottenere raffreddamento).

NOTE:

Logic dehumidification = not used:

Per tutte le configurazioni, non viene effettuata nessuna ope- razione quando vi è richiesta di deumidificazione.

Deumidification limit :

Se la temperatura ambiente è al di fuori dei limiti (Hi/Low temp. limit stop dehum.) viene disattivata la funzione di deumidifica- zione per agevolare il raffreddamento e/o il riscaldamento.

Tutti i parametri sono riferiti direttamente o indirettamente al setpoint impostato.

Tra parentesi sono indicati i set di default che possono essere modificati.

RC GROUP - 149_ItEn.0102

 

50% r.H. = 1.5 kg/h (30% of nominal produc-

 

tion).

yH.Alarm

Offset room Humidity High alarm (14%

 

rH)

 

Humidity value for high room humidity alarm.

 

The hysteresis is fixed at ±2% rH.

yL.Alarm

Offset room Humidity Low alarm (14%

 

rH)

 

Humidity value for low room humidity alarm.

 

The hysteresis is fixed at ±2% rH.

For more information please refer to the humidifier manual OEM_RC00.

SET "REDUCE HUMID. IN COOL POSITION"

With set "Reduce humid. in cool position" on "Y" (Program set) and in case of simultaneous request of cooling + hu- midification, the yPe1 value (10%) automatically sets to 20% to reduce the steam production in order to avoid steam condensation in the zone after the cooling coil.

(*)DEHUMIDIFICATION SYSTEM CONTROL LOGIC: The control logic of the dehumidification system depends on the machine’s configuration and on the "Logic dehumidi- fication" set.

CHILLED WATER UNIT:

Logic Dehumidification = Normally open:

The relay relative to output C2 is activated, which con- trols the opening of the dehumidification valve.

Logic Dehumidification = Low speed normally open:

The relay relative to output C2 is activated, which controls the speed decrease of the main fan; the "cooling floating valve" is activated and output P1 reaches 100% if the set "Analog output 1" = Cool valve + dehumidification.

DIRECT EXPANSION UNITS:

Logic Dehumidification = Low speed normally open:

The relay relative to output C2 is activated, which con- trols the speed decrease of the main fan; compressor 1 activated to 100%.

Logic dehumidification = Normally closed:

Output C2 relay, controls the solenoid valve on the direct expansion coil, remains deactivated; accordingly, the solenoid valve is closed (the exchange surface of the coil is reduced, permitting dehumidification); compressor 1 is activated in full capacity mode.

Output C2 relay is only activated together with compres- sor 1 and/or 2 for the cooling request (the entire ex- change surface of the coil is used to obtain cooling).

NOTES:

Logic dehumidification= not used;

For all configurations, no operations are performed in the case of a dehumidification request.

Dehumidification limit:

If the room temperature does not range between the limits (Hi/Low temp. limit stop dehum.), the dehumidification function is deactivated to favour cooling and/or heating.

All parameters refer directly or indirectly to the preset set point.

The default sets that can be modified are indicated in brackets.

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Dell MP2000 manual SET Reduce HUMID. in Cool Position

MP2000 specifications

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