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A
WARNING:
Install the unit, circuit breaker (IL) and/or any re-
mote controls in a place out of reach of persons who may be
taking a bath or shower.
B
WARNING: keep the unit's grille in its original packaging
until final assembly.
C
RECOMMENDED:
to ensure optimal comfort (homoge-
neous air temperature in the room), it is recommended not
to exceed a heat exchanger water inlet temperature of 55 °C.
B
WARNING: during a shutdown for installation, in the event
of a connection to a fresh air intake or an ambient tempera-
ture close to 0 °C, there is a risk of the pipes freezing. Provide
drainage for the water circuit.
B
WARNING: Install the unit without providing slopes; for a
correct condensate drainage there is a slope in the conden-
sate drip tray inside the unit.
5.1
INSTALLATION REQUIREMENTS
The fan coils should be installed in a position where the room
can be heated or cooled evenly, on ceilings able to support their
weight. Store the unit in its packaging until you are ready to in-
stall it.
For installation and use of accessories, please refer to the relative
technical sheets.
Install any remote control panel in an easily accessible position
allowing the user to set the functions while ensuring an accurate
reading of the ambient temperature, if provided.
Avoid therefore:
Ū positions directly exposed to sunlight;
Ū positions exposed to direct currents of warm or cold air
Ū placing obstacles that impede an accurate temperature
reading
During continuous winter operation, to avoid problems relating
to the regulation of the unit, it is recommend to use remote con-
trols supplied with a probe for detecting the air temperature.
C
NB:
The water sensor, where present, must be mounted in
the appropriate trap on the valve kit, on the INLET pipe.
1
Water sensor holder
Ū If a valve kit other than the one suggested is used, it is neces-
sary to install the sensor on the INLET pipe, by means of the
special copper socket filled with conductive paste.
Ū Lastly, the sensor must be properly isolated to ensure that it
reads the water temperature correctly.
C
NB:
The air and humidity sensors, where present, must be at-
tached in the appropriate section located in the intake area
of the base unit. Sensor retainer and relative fixing screws
are supplied with unit.
1
Sensor retainer
Make the plumbing connections to the heat exchanger and,
where the cooling function is to be used, to the condensate
drainage outlet.
B
WARNING:
In normal operation, particularly with the fan at minimum
speed and ambient air with high relative humidity, conden-
sation may form on the air outlet and on some external parts
of the unit.
To avoid such issues while always remaining within the oper-
ating limits envisaged for the unit, it is necessary to limit the
inlet temperature of the water inside the heat exchanger. In
particular, the difference between the air dew point (T
and the inlet water temperature (T
°C, according to the following relationship: TW>TA,DP-14
°C
Example: in the case of ambient air at 25 ° C with 75% rela-
tive humidity, the dew point temperature is about 20 ° C and
therefore the inlet temperature of the water in the battery
must be greater then:
Ū 20-14 = 6 °C in order to avoid condensation on a fancoil
equipped with a valve.
Fan coil with valve
Air temperature dry bulb (°C)
21
23
40
5
5
50
5
5
60
5
5
Relative
humidity %
70
5
5
80
5
6
90
6
8
If the valves are not installed, there could be abundant con-
densation, especially if the unit is not operated for long pe-
riods of time.
During wintertime periods of quiescence, drain water from the
system, to prevent ice from forming. If anti-freeze solutions are
used, check for their freezing point using the table below.
Freezing
% Glycol by weight
temperature (°C)
0
0
10
-4
20
-10
30
-16
40
-24
Electrical connections
Make the electrical connections whilst the power supply is
disconnected, in accordance with current safety regulations,
carefully following the wiring diagram and its legend.
Check that the mains electricity supply is compatible with the
voltage shown on the unit rating plate.
C
NOTE:
The electrical connections indicated must be made
by the installer.
,D
)
A
P
) must NOT exceed 14
W
25
27
29
31
33
5
5
5
5
5
5
5
5
6
8
5
5
7
9
11
6
8
9
11
13
8
10
12
14
16
10
12
14
16
18
Capacity
Pressure drop
adjustment
adjustment
1,00
1,00
0,97
1,05
0,92
1,10
0,87
1,15
0,82
1,20
WC66000482-06
33
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