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 should the following concentrations of
pollutants in the air where the unit operates be exceeded:
SO
2
H
S
2
NO,NO
2
NH
3
N
O
2
The unit should not be installed in places characterised 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
corrosion.
OPERATING LIMITS
Maximum water inlet temperature ........................................70°C
The assembly site must be chosen in such a way that the maximum
and minimum ambient temperature limits (Ta) are respected 0°C < Ta
<40°C; R.H. < 85%.
Flow rate limits:
MOD.
Minimum flow rate
Maximum flow rate
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, that depend on the thermo-hygrometric conditions of the air in the room.
These limits refer to unit operating with fan at minimum speed.
MINIMUM AVERAGE WATER TEMPERATURE
Temperature of the wet bulb
of the air in the room °C
WARNINGS FOR THE QUALITY OF THE
WATER CIRCULATING IN THE COILS
You are advised to perform an analysis of the water circulating
< 0.02 ppm
The water circuit must be supplied and replenished with treated
< 0.02 ppm
< 1 ppm
< 6 ppm
< 0.25 ppm
Maximum operating pressure ...........................13 bar (1.3 MPa)
Power with a current of 220-240V ~ 50/60 Hz and an earth
connection. In any case, the line voltage must remain within the
tolerance range of ±10% in relation to the nominal value.
FCWI
23
[L/h]
100
[L/h]
750
21
15
3
17
3
19
3
21
6
23
-
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.
water that does not exceed the threshold levels indicated
below.
Total hardness in mmol/L
-
Chlorides [CL
]
2-
Sulphates [SO
]
4
-
Nitrates [NO
]
3
Dissolved iron
Dissolved oxygen
Carbon
dioxide [CO
]
2
Resistivity
pH
33
100
750
Temperature of the air in the room with dry bulb °C
23
25
3
3
3
3
3
3
5
4
8
7
1 < mmol/L < 1.5
< 10 mg/L
< 30 mg/L
= 0 mg/L
< 0,5 mg/L
4 < [O
] < 9 mg/L
2
< 30 mg/L
20 Ohm∙m < Resistivity < 50
Ohm∙m
6.9 < pH < 8
43
53
150
250
1100
2000
27
29
3
3
3
3
3
3
3
3
6
5
29
31
3
3
3
3
5