Carel humiSteam x-plus - 2.1 Supply Water Requirements; Water Management; 2.2 Drain Water Characteristics; 2.3 Drain Tempering Function

12
ENG
“UEX-PLUS” +03U0040EN - Rel. 1.35 - 10.05.2013
installeruserservice
2.1 Supply water
Only use main water with:
• pressure between 0.1 and 0.8 MPa (14.5 and 116 PSI), temperature
between 1 and 40 °C (33.8 and104 °F) and an instant  ow-rate no lower
than the rated  ow of the  ll solenoid valve, the connection is G3/4M (see
par. “Technical speci cations” page 47);
• range hardness 10° to 40 °f (equal to 400 ppm of CaCO
3
), conductivity:
75 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 300 1250 75 350
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)
150
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:
TDS ≅0,93 * σ
R, 20 °C
;
R
180
≅ 0,65 * 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 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 (212 °F);
• it is not toxic and can be drained into the sewerage system.
2.3 Drain tempering
The unit is  tted with a tempering valve that, opening at the same time as
the drain valve, adds cold water to the drain line, thus ensuring a maximum
temperature of the drain water of 60°C/140°F.