WATERKOTTE EcoTouch DS 5050T, Планирование и установка

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Installation and connection
04.12.2015
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Copyright

2014 by: WATERKOTTE GmbH. Subject to changes.
7.3.2.1 Groundwater quality
When using groundwater, the following limits (see table and diagram) must
be observed. If limits are exceeded, a separation heat exchanger is used.
The soldered plate heat exchanger consists of embossed stainless steel
plates 1.4401 or AISI 316. You must therefore take the corrosion behaviour
of stainless steel and the solder material, copper, into account.
Water contents and properties Unit Copper-soldered
plate heat exchanger (stand-
ard)
Nickel-soldered
plate heat exchanger
(optional)
pH value 7 - 9 (incorporating SI Index) 6 – 10
Saturation index SI (delta pH value) -0.2 < 0 < +0.2 No specification
Total hardness °dH 6 – 15 6 – 15
Conductivity µS/cm 10...500 No specification
Filterable matter mg/l < 30 < 30
Chlorides mg/l See diagrams on next page. No chlorides permitted above 100 °C.
Free chlorine mg/l < 0.5 < 0.5
Hydrogen sulphide (H
2
S) mg/l < 0.05 No specification
Ammonia (NH
3
/NH
4+
) mg/l < 2
Sulphate mg/l < 100 < 300
Hydrogen carbonate mg/l < 300 No specification
Hydrogen carbonate / sulphate mg/l > 1.0 No specification
Sulphide mg/l < 1 < 5
Nitrate mg/l < 100 No specification
Nitrite mg/l < 0.1 No specification
Iron, dissolved mg/l < 0.2 No specification
Manganese mg/l < 0.1 No specification
Free aggressive carbon dioxide mg/l < 20 No specification
Table 1: Resistance of soldered plate heat exchangers to corrosion by substances contained in water
The values listed are guidelines which may vary under certain operating conditions. If you have questions,
please call us under Tel. : (+49) (0) 23 23 / 9 37 60
Permitted chloride contend depending on the temperature
1
10
100
1000
10000
0 25 50 75 100
Temperature [°C]
C
h
lo
ri
d
e
c
o
n
te
n
t
[m
g
/k
g
]
No working area
Working area without any problems
Not used
Usable without problems