The design of the G422 (building version in the pump and control unit ZPS) and GH26 (wall-mounted) has been developed since 2010 for monitoring the operation of solar systems. The current generation of P09 is the next installment of the controller, which has been implemented with suggestions from both solar users and installers or service technicians.
The scope of the function has also been expanded thanks to the possibility of connecting more accessories. Four temperature sensors are still supplied as standard, but if needed, two additional sensors can be connected. This allows you to operate more complex solar circuit diagrams without losing the return temperature function to the solar collectors. You can also connect two electronic flow meters and use UPS-type devices to support work in case of power failure. Increased control of the solar system can also be achieved with the optional pressure sensor (pressure switch). New versions of the drivers have this option already connected in standard. Important information for both the user and the service technician will be the number of superheaters that took place in the solar system. It may additionally indicate the need to start the protection function of the installation - day cooling of solar collectors or in the so-called. holiday function.
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