Supply Water; Drain Water; Drain Tempering - Carel humiSteam Basic User Manual

ENG

2.1 Supply water

Only use mains 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 fl ow-rate no lower
than the rated fl ow of the fi ll solenoid valve, the connection is G3/4M (see
par. "11.2 Technical specifi cations");
•
range hardness 10° to 40 °f (equal to 400 ppm of CaCO
75 to 1250 μS/cm;
•
no organic compounds.
supply water unit of
characteristics measure
Hydrogen ions (pH)
Specifi c conductivity at μS/cm
20°C ( σ )
R, 20 °C
Total dissolved solids (c ) mg/l
R
Dry residue at 180°C (R ) mg/l
180
Total hardness (TH) mg/l CaCO
Temporary hardness mg/l CaCO
Iron + Manganese mg/l Fe+Mn
Chlorides ppm Cl
Silica mg/l SiO
Residual chlorine mg/l Cl-
Calcium sulphate mg/l CaSO
Metallic impurities mg/l
Solvents, thinners, mg/l
detergents, lubricants
(1)
= values depend on the specifi c conductivity; in general:
0.65 * σ 0.93 * σ
C ; R
R, 20 °C 180 R, 20 °C
R
(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, aff 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 fi 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.
Note: The use of the drain tempering option, increase the fl ow rate of the
drain water.
"UE BASIC" +03U0042EN - rel. 1.3 - 10 May 2013
), conductivity:
3
normal water with low
water salt content
min. max. min. max.
7 8.5 7 8.5
300 1250 75 350
( 1 ) ( 1 ) ( 1 ) ( 1 )
1 1 1 1
( ) ( ) ( ) ( )
(2) (2)
100 400 50 150
3
(3) (3)
60 300 30 100
3
= 0,2 = 0,2
= 30 = 20
= 20 = 20
2
= 0,2 = 0,2
= 100 = 60
4
0 0 0 0
0 0 0 0
Tab. 3.a
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12