Pool Circuit - GeoSmart NETZERO BW Manuel D'installation

Installation instructions
Follow the instructions below to wire the DHW circuit.
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In the NETZERO BW models, install a particulate filter in the return pipe to the heat pump with a mesh size no greater than 1
mm. It is recommended to install shut off valves immediately before and after the filter to make it easier to clean or replace.
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The DHW tank is permanently connected to the mains water supply.
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Install a check valve at the tap water inlet to prevent the possible return of hot water from the mains.
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Install a safety unit (expansion vessel + safety valve) at the tap water inlet to prevent overpressure in the DHW storage tank.
In compact NETZERO models the maximum tank pressure is 8 bar (800 kPa).
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If there is a risk of scalding, a thermostatic mixing valve should be installed at the DHW outlet.
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If the maximum system pressure can exceed 5 bar, it is recommended to install a pressure reducing valve in the mains inlet
to prevent overpressure in the storage tank.
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If there is an auxiliary system integrated in the DHW storage tank, install a safety valve in the production circuit return to
protect it from any overpressures.

3.5. Pool circuit

The NETZERO heat pumps can be used to send hot water directly to the pool production storage tank through an open / close 3-way
valve. It can be connected two different ways for this purpose, depending on the application. In both cases, the POOL mode must be
activated via a voltage-free signal from a thermostat.
Connection to the heating circuit (A)
In models that are not equipped with the HTR system, pool production should be connected to the heating circuit via an open / close
3-way valve. This type of connection allows non-simultaneous production for the pool on the one hand and heating or cooling on the
other hand.
Connection to the HTR system (B)
In addition to the option mentioned above, in NETZERO BW models with an HTR system, pool production can be connected to the
DHW circuit. This allows two options: exclusive pool production with the primary condenser and simultaneous heating / cooling and
pool production through the HTR system.
GEOSMART ENERGY
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Figure 3.7. Wiring scheme of the DHW circuit.
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Installer manual NETZERO
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