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nglish
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IFCXIUSLJ 1203 - 5383620_00
Minimum average water temperature
If the fan coil is working in continuous
cooling mode in an environment
where the relative humidity is high,
condensate might form on the air
delivery and on the outside of the
device. This condensate might be
deposited on any objects underneath
and on the floor.
To avoid condensate on the external
structure of the device while the fan is
functioning, the average temperature
of the water must not be lower than
the limits shown in the table below,
that depend on the thermo-hygrometric
conditions of the air in the room.
The limits mentioned above refer to
operation while the fan is set to its
minimum speed level.
In the event of prolonged fan inactivity
and with cold water passing through
the coil, condensate may form on the
external case of the unit.
As a result,
we recommend including the 3-way
valve accessory.
Water temperature
In order to prevent air stratification in
the room, and therefore to achieve
improved mixing, it is advisable not
to supply the fan coil with water at a
temperature over 149°F / 65°C.
The use of water at high temperatures could
cause squeaking due to the different
thermal expansions of the elements
(plastic and metal), this does not however
cause damage to the unit if the maximum
operating temperature is not exceeded.
Performance values refer to the following conditions:
- at the maximum motor speed;
- the total input power is determined by adding the input power
for the unit and the input power for the accessories connected
and declared in the corresponding manuals.
OPERATING LIMITS
FCXI
20 /220US 30 /220US 40 /220US 50 /220US 80 /220US
24 /220US 34 /220US 44 /220US 54 /220US 80 /220US
Maximum water inlet temperature
176°F / 80°C
Maximum recommended water inlet temperature
149°F / 65°C
Maximum operating pressure
115psi / 8bar /
Room temperature limits (Ta)
32°F < Ta < 113°F / 0°C < Ta < 45°C
Relative humidity limits in the room (R.H.)
U.R. < 85%
Power supply
220V ( ±10% ) ~ 60Hz
MINIMUM AVERAGE WATER TEMPERATURE
[°F/°C]
Dry bulb ambient air temperature
70/21
73/23
77/25
80/27
84/29
88/31
Wet bulb ambient
air temperature
59 / 15
37.4/3
37.4/3
37.4/3
37.4/3
37.4/3
37.4/3
62.6 / 17
37.4/3
37.4/3
37.4/3
37.4/3
37.4/3
37.4/3
66.2 / 19
37.4/3
37.4/3
37.4/3
37.4/3
37.4/3
37.4/3
69.8/21
48.2/6
41/5
39.2/4
37.4/3
37.4/3
37.4/3
73.4/23
-
46.4/8
44.6/7
48.2/6
41/5
41/5
Water flow limits for 3-row coil
FCXI
20 /220US
30 /220US
40 /220US
50 /220US
80 /220US
Minimum water flow
l/h
100
100
150
150
300
gpm
0.44
0.44
0.66
0.66
1.32
Maximum water flow
l/h
750
750
1100
1100
2200
gpm
3.3
3.3
4.84
4.84
9.68
Water flow limits for 1-row coil
FCXI
20 /220US
30 /220US
40 /220US
50 /220US
80 /220US
Minimum water flow
l/h
50
50
50
50
100
gpm
0.22
0.22
0.22
0.22
0.44
Maximum water flow
l/h
400
400
400
400
900
gpm
1.76
1.76
1.76
1.76
3.96
Water flow limits for 4-row coil
FCXI
24 /220US
34 /220US
44 /220US
54 /220US
84 /220US
Minimum water flow
l/h
150
150
150
150
300
gpm
0.66
0.66
0.66
0.66
1.32
Maximum water flow
l/h
1100
1100
1100
1100
2200
gpm
4.84
4.84
4.84
4.84
9.68
