Installation and connection
04.12.2015
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Copyright
2014 by: WATERKOTTE GmbH. Subject to changes.
7.3.3.1
Filter
To prevent contamination, the media inlets of the evaporator and heat ex-
changer must be equipped with a filter (0.8 mm mesh). Contamination in
the heat exchanger can cause corrosion and - in some applications - freez-
ing of the heat exchanger
7.3.3.2
Cleaning
If the formation of deposits is to be expected (e.g. severe contamination)
based on water quality, cleaning must be performed in regular intervals.
Cleaning can be performed by flushing. The plate heat exchanger is to be
flushed with a suitable cleaning agent in counter-flow direction.
If chemicals are used for cleaning, please ensure that they are compatible
with stainless steel or copper. Failure to comply can result in destruction of
plate heat exchanger!
7.3.4
Groundwater installation: Separating heat exchanger
With ground water heat pumps we advise the installation of a separating
heat exchanger to avoid direct damage at the heat pump.
The intermediate circuit has to be filled with ca. 15 % Ethylene-Glycol.
Z
2
0
3
2
7
1
Under floor heating
2
Heat pump
3
Heat source
4
Expansion tank
5
Safety fitting
6
Heat exchanger
(Ground water/Ethylene-Glycol 15 %)
7
Dirt trap (0.8 mm mesh width)
6
5
4
1
5
4
7
