Do not install components that might cover the inlet or outlet of the safety valves; this could lead to a
risk of some of its components breaking and cause injuries and/or material damage.
3.2. Brine circuit
The ecoGEO heat pumps can be used with horizontal or vertical (A) geothermal brine systems or by using groundwater (B).
Aerothermal brine can also be used by replacing the geothermal collector with one or more ecoGEO AU12 aerothermal units (C).
Finally, hybrid collection can be obtained by combining a geothermal collector with one or more ecoGEO AU12 aerothermal units
(D).
Geothermal brine systems
Brine systems with more than one circuit must be connected in parallel, so the flow rate through each one is similar.
Groundwater brine systems
Groundwater brine systems must use a midway exchanger to prevent the heat pump evaporator from corrosion, freezing or getting
dirty.
Hybrid brine systems
In hybrid brine installations, the aerothermal collector and the geothermal collector must be connected in series so the antifreeze
mixture circulates first through the aerothermal collector and then through the geothermal collector.
On the other hand, open / close 3-way valves must be installed between the outlet and return of each collector so the collector can
be bypassed when it is not in use.
Figure 1.8. Brine circuit connection options.
Integrated components
The following brine circuit components are included within the heat pump.
Variable speed and high efficiency outlet pump (energy class A).
Expansion vessel with a capacity of 8 litres, with pre-adjusted pressure of 0.75 bar (pressure gauge).
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