Installation of heat pump and domestic hot water tank
21.11.2015
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Z20469
Copyright
2013 by: WATERKOTTE GmbH. Subject to changes.
8.6.2
Water glycol systems
Since the EcoTouch Ai1 Geo is already equipped with a heat source pump, the
heat source system can be directly connected to the heat pump. There is no need
for an additional heat source module. To prevent frost damage, the heat source
system must be filled with about 30 % WATERKOTTE ethylene glycol (freezing
point at about -15 °C). The heat source system must be properly filled with the
operating media and vented.
8.6.3
Groundwater heat source
For groundwater heat pumps the installation of a separation heat exchanger is
absolutely essential to avoid direct damage to the heat pump. The intermediate
circuit must be filled with about 15 % ethylene glycol. The following WATERKOTTE
accessories are required for groundwater application:
Filter
Flow monitoring
Separating heat exchanger
8.6.4
Groundwater quality
When using groundwater, the following limits (see table and diagram) must be ob-
served. 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.
