25
ENGLISH
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 required 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 (only mod. IHC + IHE)
When the air conditioner is on heating mode, it works as follows:
●
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 COOLING 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.
OPERATION OF THE AIR CONDITIONER
SOMETHING MORE ABOUT HEAT PUMP OPERATION
1 °C
1 h
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 effi-
ciency.
●
With low ambient temperature the delivered capacity is
smaller and it will become necessary to use other heating
systems to integrate or replace the heat pump.
●
Since the time needed to reach the required temperature is
longer in respect of other types of heating, it is recommen-
ded to use the TIMER.
PREHEATING
When the air conditioner set on heating mode is switched on,
the indoor unit fan remains off for few minutes.
The same may happen during continuous operation.
In this way cold streams are avoided until the indoor exchan-
ger reaches a sufficiently high temperature.
DEFROSTING
When the air conditioner works on heating mode, some con-
densate frosts on the exchanger surface and prevents an effi-
cient heat exchange.
The frost must be removed from time to time to perform a pro-
per operation and delivery of heat to the room.
●
The microprocessor controls this operation through the
" defrosting cycle " during which the frost is removed.
●
The air conditioner starts again automatically on heating
mode when the defrosting cycle is finished.
timed operation
timed operation start
STOP
timed operation start
STOP
1 h
3 °C
timed operation
