ALL solar hot water tanks with an integrated exchanger can be installed with DualSun solar panels.
It is important to specify that to guarantee proper operation of the solar circuit, it is necessary to ensure that the resistance is above the solar exchanger. This will prevent the bottom of the tank from being heated by the resistance, thus allowing solar heating. Care must therefore be taken not to install a resistor at the bottom of the tank: this would prevent proper operation of the solar circuit.
Therefore, if you already have a solar hot water tank, as long as the rules above are respected, it is then compatible with a new solar installation.
Most well-designed solar balloons respect this constraint.