Page 8 Rev. 02-21
USER MANUAL
The supplied steam is managed proportionally to steam production request that the electronic
control calculates depending on the
chosen functioning among the eight
available, described in chap. 2.4.
The minimum steam supply is set at
20% of the rated maximum current
(independently of Pr) and is managed
with an activation hysteresis; the
maximum supply, which occurs at a
maximum
production
request,
corresponds to the percentage set in the
first level variable (Pr). If for example
on an ES6 that produces 6kg/h of
steam, the variable Pr is set to 100%
the maximum production will be 6kg/h;
but if the variable Pr is reduced to 50%,
the maximum production will be 3kg/h.
For correct operation, the humidifier must be supplied with drinking water coming from the
aqueduct; this is because it is free from any element harmful to health and is compatible with
the range of conductivity useful for optimal operation of the humidifier. However, in some
geographical areas mains water may be unsuitable for optimal functioning due to very low
conductivity or high hardness or because it’s too aggressive; the below is a summary table of the
parameters required for correct humidifier functioning.
POTABLE WATER FUNCTIONING RANGE
LIMITS
with standard
cylinder
LIMITS
with cylinder
for low conductivity
PARAMETER
UNIT OF
MEASURE
MIN
OPT
MAX
MIN
OPT
MAX
Water conductivity at 20°C *
S/cm
250
400
1300
125
200
350
pH
7
8
8,5
7
8
8,5
Hardness
mg/l CaCO
3
160
200
450
60
120
160
Chlorine
ppm Cl
2
0
0
0,2
0
0
0,2
Chlorides
mg/l Cl
-
0
<25
250
0
<20
100
Calcium sulphate
mg/l CaSO
4
0
0
95
0
0
55
Metal impurities / Solvents / Soaps / Lubricants
mg/l
0
0
0
0
0
0
Temperature
°C
+1
+20
+40
+1
+20
+40
MIN = minimum - OPT = optimal - MAX = maximum
* Water conductivity is always expressed at 20°C; bear in mind that conductivity decreases as water
temperature drops and so water may not be very conductive during winter when mains water is
particularly cold.
In case of very low conductivity, consult chapter 5.3 on page 38 of this manual: Intelligent
production for low conductivity.
Do not supply the humidifier with well water or treated with osmosis purifiers,
demineralisers or softeners or taken from cooling circuits
.
Minimum supply
Steam production request
Supplied steam
Maximum supply
