86
INSTALLER
USERMAINTENANCE TECHNICIAN
TECHNICAL DATA
3.24 DEHUMIDIFICATION FUNCTION
Dehumidication can be performed according to two dierent
types of devices:
In the rst case, the cooling mode temperature corresponds to:
1) Hu m i d is ta t;
2) Hu m id i t y se ns o r.
- In the event of dehumidication request: maximum setpoint
set for the request zone;
- In the event of dehumidication and cooling request: setpoint
set for the request zone.
In the second case, the cooling mode temperature corresponds to:
- In the event of dehumidication request: maximum setpoint
set for the request zone;
- In the event of dehumidication request and cooling request:
setpoint set for the request zone, but limited by the calculated
dew temperature.
e dew temperature is only calculated for adjustments
above or equal to 15°C.
3.25 OUTDOOR UNIT TESTMODE FUNCTION
When test mode is used (see outdoor unit instruction booklet), the
i n d o o r u n i t m u s t b e s e t i n a m o d e o t h e r t h a n “ S t a n d - b y ”.
e alarm E183 is triggered during the test, meaning “Test mode”
in progress.
3.26 OUTDOOR UNIT PUMP DOWN
FUNCTION
If the pump down function is used (see outdoor unit instruction
booklet) the indoor unit must be set in “Stand-by”.
e function can only be activated if the appliance is not under
alarm.
3.27 PUFFER IN PREHEATING FUNCTION
In the presence of an inertial storage tank heated by other sources
of heat, following a central heating demand, it is possible to pre-
vent the generators from being activated by using hot water com-
ing from the puer
e function is activated by setting one of the relays of the relay
b o a r d a t 4 . (s e e P 0 3 , P 0 4 , P 0 5 ).
e puer function requires the puer probe.
See the instruction sheet of the relay board for details and exam-
ples
3.28 NIGHT MODE FUNCTION
is function can be activated by setting the internal clock of the
appliance (parameters U 21 and U 22).
Activating the function allows you to reduce the compressor fre-
quency during the outdoor unit operation in the time slot set in
the U 12 and U 13 parameters.
3.29 SYSTEM SETPOINT CORRECTION
FUNCTION
In the presence of hydraulic disconnections on the system which
separate the appliance from the low temperature zone (zone 2), a
function can be activated which allows to meet the demands, by
correcting the appliance’s setpoint.
e corrections can be made either in heating or cooling mode
only.
ey are activated by setting the parameters P 23 or P 24 at a value
> 0°C.
Following a demand, the correction begins aer a time equal to P
21 and continues by 1°C every P 22 minutes.
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