Internal Auxiliary Equipment Power Supply; External Protections - GeoSmart NETZERO BW Manuel D'installation

5.3. Internal auxiliary equipment power supply

The NETZERO heat pumps are equipped with two types of internal auxiliary heater. For NETZERO 1-9kW the internal auxiliary is
comprised by three elements of 1.3kW each one up to a maximum of 4kW with all the elements connected. For NETZERO 3-12kW
and NETZERO 5-22kW the internal auxiliary is comprised by three elements of 2kW each one up to a maximum of 6kW with all the
elements connected.
Regardless of the resistance we have, this requires a separate power supply for each element. Each element is independent
connected to a single-phase power supply 1/N/PE 230 V / 50-60 Hz. Depending on the thermal power you wish to obtain, you should
connet the number of elements that you need.
Figure 5.10. Example of single phase connection with 1.3kW, 2.6 kW or 4 kW.
Figure 5.11. Example of single phase connection with 2kW, 4 kW or 6 kW.
Regardless of the connection method, the electrical resistance must be powered by an external automatic switch that can shut off
all the circuits.

5.4. External protections

It is equipped with a connector that can be connected to various types of external mechanical protections, such as flow switches,
pressure switches, thermostats, etc.
The ESS connector is used to connect these protections. The external protection devices are powered from the heat pump connector
and should have a cut-off capacity of at least 200mA/230Vac.
GEOSMART ENERGY
HEATER POWER SUPPLY 230V
EH1 EH2 EH3
HEATER POWER SUPPLY 230V
EH1 EH2 EH3
T2
T1
Figure 5.12. Connection scheme of the external protection devices.
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Installer manual NETZERO