User manual

11
GB
“Wellness” +030220571 - rel. 3.0 - 01.10.2007
installeruserservice
2.1 Supply water
Only use mains water with:
pressure between 0.1 and 0.8 MPa (1 and 8 bars), temperature between
1 and 40 °C and an instant  ow-rate no lower than the rated  ow of
the  ll solenoid valve, the connection is G3/4M (see par. “10.2 Technical
speci cations” page 37);
hardness no greater than 40°fH (equal to 400 ppm of CaCO
3
),
conductivity: 125 to 1250 μS/cm;
no organic compounds.
supply water
characteristics
unit of
measure
normal
water
water with low
salt content
min. max. min. max.
Hydrogen ions (pH) 7 8.5 7 8.5
Speci c conductivity at
20°C (
σ
R, 20 °C
)
μS/cm 350 1250 125 350
Total dissolved solids (c
R
)mg/l (
1
)(
1
)(
1
)(
1
)
Dry residue at 180°C (R
180
)mg/l (
1
)(
1
)(
1
)(
1
)
Total hardness (TH) mg/l CaCO
3
100
(2)
400 50
(2)
160
Temporary hardness mg/l CaCO
3
60
(3)
300 30
(3)
100
Iron + Manganese mg/l Fe+Mn = 0.2 = 0.2
Chlorides ppm Cl = 30 = 20
Silica mg/l SiO
2
=20 = 20
Residual chlorine mg/l Cl- = 0.2 = 0.2
Calcium sulphate mg/l CaSO
4
= 100 = 60
Metallic impurities mg/l 0 0 0 0
Solvents, thinners,
detergents, lubricants
mg/l 0 0 0 0
Tab. 3.a
(1)
= values depend on the speci c conductivity; in general:
C
R
≅0.65 * σ
R, 20 °C
; R
180
≅0.93 * σ
R, 20 °C
(2)
= not less than 200% of the chloride content in mg/l CL
(3)
= not less than 300% of the chloride content in mg/l CL
-
There is not reliable relationship between hardness and conductivity of
the water
Important:
Important:
do not treat the water with softeners, this may cause the entrainment
of foam, a ecting the operation of the unit;
do not add disinfectants or anticorrosive compounds to the water, as
these are potential irritants;
the use of well water, industrial water or water from cooling circuits
and, in general, any potentially chemically or bacteriologically
contaminated water is not recommended.
2.2 Drain water
this contains the same substances dissolved in the supply water,
however in larger quantities;
it may reach a temperature of 100 °C;
it is not toxic and can be drained into the sewerage system.
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