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DURING OPERATION
Always leave the filter fitted on the fan coil during operation
(otherwise dust in the air could soil the coil surface area).
IT IS NORMAL
In cooling mode, water vapour may be present in the air deliv-
ery of the fan coil.
In the heating function it might be possible to hear a slight
hiss around the fan coil. Sometimes the fan coil might give off
unpleasant smells due to the accumulation of substances in the
air of the environment (especially if the room is not ventilated
regularly, clean the filter more often).
MINIMUM AVERAGE WATER
TEMPERATURE Temperature of the air in
the room with dry bulb °C
Temperature of the air in the
room with wet bulb °C
OPERATING ENVIRONMENT ALREADY TRANSLATED
OPERATING ENVIRONMENT
The units are designed for installation in closed environments in conditions
of 'urban', non-marine atmosphere with non-corrosive and non-dusty
characteristics.
Under no circumstances the following concentrations of pollutants in the
air, in which the unit must operate, shall be exceeded:
SO
<0,02 ppm
2
H
S
<0,02 ppm
2
NO,NO
<1 ppm
2
NH
<6 ppm
3
N
O
<0,25 ppm
2
The unit should not be installed in locations characterized by the presence
of flammable gases or acidic or alkaline substances.
Otherwise the coils and the internal components of the equipment could
suffer serious and irreparable damage from corrosi
18
IULIPCLJ 1810 - 6976445_02
Temperature of the air in the room with dry bulb °C
21
23
15
3
3
17
3
3
19
3
3
21
6
5
23
-
8
WARNINGS FOR THE QUALITY OF THE WATER CIRCULATING
IN THE COILS
It is recommended to perform an analysis of the water circulating in the coil
focusing on the research of the possible presence of bacteria (detection of
iron bacteria and micro-organisms that can produce H2S or chemically reduce
sulphates) and on the chemical composition of the water, to prevent corrosion
and fouling inside the tubes.
The water circuit must be supplied and replenished with treated water that does
not exceed the threshold levels indicated below.
Total hardness in mmol/l
Chlorides [CL
Sulphates [SO
Nitrates [NO
Dissolved iron
Dissolved oxygen
Carbon dioxide [CO
Resistivity
pH
OPERATING LIMITS
Maximum water inlet temperature:
Maximum operating pressure:
Minimum average water temperature:
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, which depend on the thermo-hygrometric conditions of
the air in the room. These limits refer to unit operating with fan
at minimum speed. 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.
25
27
3
3
3
3
3
3
4
3
7
6
l < mmoll/l < 1,5
-
]
< 10 mg/litre
2-
]
< 30 mg/litre
4
-
]
= 0 mg/litre
3
< 0,5 mg/litre
4 < [O
] < 9 mg/litre
2
]
< 30 mg/litre
2
20 Ohm∙m < Resistivity< 50 Ohm∙m
6,9 < pH < 8
80°C
8 bar
29
31
3
3
3
3
3
3
3
3
5
5
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