Brine Circuit - ECOFOREST ecoGEO Serie Manual De Instalador

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.
A)
B)
DO17
C)
DO16
DO6
D)
DO16
DO6
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).

Safety valve loaded at 3 bar (pressure gauge).
4 4
3 3
4
3
AO3
4
3
AO3
AI12
T
4
3
DO17 DO16
Figure 1.8. Brine circuit connection options.
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Installer manual ecoGEO
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