AERMEC ECA 120 Manual De Instrucciones página 24

NIGHT OPERATION
When the unit stop is timed, the microprocessor starts the night operation mode.
However, this program works regardless of the time of the day. It is normally used when starting sleeping but it is not requi-
red on all the night through.
COOLING OR DEHUMIDIFICATION MODE
When the air conditioner is on cooling or on dehumidification
mode, it works as follows:
– one hour after the timed start the temperature is increased by
1 °C;
– the new temperature is kept until the timed stop;
– the air conditioner stops at the timed hour.
HEATING MODE (heat pump models only)
When the air conditioner is on heating mode, it works as fol-
lows:
– one hour after the timed start, the temperature is lowered by
3 °C;
– the new temperature is kept until the timed stop;
– the air conditioner stops at the timed hour.
NOTE: Automatic modification of the temperature by the microprocessor prevents excessive cold during operation in COO-
LING or DEHUMIDIFICATION mode, and excessive heat during HEATING mode. The modified temperature (1 °C
higher on cooling and 3 °C lower on heating modes) cannot be changed.
HEAT PUMP OPERATION
PREHEATING
When the air conditioner set on heating mode is switched on, the indoor unit fan remains off for few minutes (2 to 5).
The same may happen during continuous operation.
In this way cold streams are avoided until the indoor exchanger reaches a sufficiently high temperature.
DEFROSTING
When the air conditioner works on heating mode, some condensate frosts on the exchanger surface and prevents an effi-
cient heat exchange.
The frost must be removed from time to time to perform a proper operation and delivery of heat to the room.
– The microprocessor controls this operation through the "defrosting cycle" during which the frost is removed.
– The defrosting cycle lasts 2 to 10 minutes (depending on ambient conditions) and during the cycle both indoor and out-
door fans are cut off.
– The air conditioner starts again automatically on heating mode when the defrosting cycle is finished.
HEATING EFFICIENCY
Heat pump heating is performed through reverse cycle. It means that the heat exchangers work the other way round.
– On cooling mode the indoor heat exchanger takes the heat of the room and throws it away through the cooling circuit to
the outdoor exchanger.
– On heat pump heating mode the outdoor exchanger takes the heat of the air and transmits it to the room through the
indoor exchanger.
The heating capacity supplied to the room and the electric power consumption depend on the temperature changes and on
the relative humidity. The ratio between delivered capacity and power consumption expresses the heating efficiency.
The air conditioners can operate with ambient temperature down to -8,5 °C. Under these conditions however the delivered
capacity is smaller and it will become necessary to use other heating systems to integrate or replace the heat pump.
24
Funzionamento temporizzato
1 °C
1 h
Inizio funzionamento temporizzato
Inizio funzionamento temporizzato
1 h
Funzionamento temporizzato
Stop
Stop
3 °C