Discharging The Circuits - GeoSmart NETZERO BW Manuel D'installation

3. Connect a transparent hose from valve E to antifreeze mixture tank A.
4. Close valve C and open filling valves D and E.
5. Start the external recirculation pump and keep it running until the return is completely free of air and the antifreeze mixture
is mixed perfectly.
6. Open valve C and keep the external pump connected to remove the air between valves D and E.
7. Close valve E and pressurise the circuit to target pressure. Make sure that the pressure does not exceed 3 bar (pressure gauge)
under any circumstance.
8. Close valve D.
After completing the source circuit filling process, it is recommended to check the concentration of antifreeze mixture again using a
refractometer.
3
4
D
C
E

4.3. Discharging the circuits

The heat pump is equipped with internal drain valves that ensure complete discharge of the various internal circuits.
GEOSMART ENERGY
B
A
Figure 4.2. Filling the source circuit.
21
Installer manual NETZERO
3
4
D
C
E
B
A