Solar thermal collectors


Integrated exchanger

Solar domestic hot water

High efficiency circulator pump

The solar charging station DN25 with integrated exchanger ensures optimal transfer of solar heat energy towards the hot water storage tanks.
The presence of high efficiency circulators and of the controller 600i allows a perfect adaptation of flows in response to fluctuations in solar radiation, temperatures in the storage tanks and different requirements requested.
The station is fully assembled, pre-wired and factory-set to facilitate commissioning. It is designed for wall mounting and is fully insulated. This station is adapted for up to 80m²aperture of flat-plate collectors SUN 300 and up to 45m²absorber of vacuum tube collectors SUN 400.

Technical descriptionDocumentaries

Technical description

  • 2 ball valves (primary flow and return) with anti-thermosiphon check valve 200mmCE (can be opened) and removable metal thermometer 0-160°
  • Fill and drain secondary valve
  • Permanent primary air bleeder with manual air vent valve
  • Generoulsy sized exchanger with 60 brazed plates stainless steel AISI 316 in counter-current
  • Expanded PolyPropylene insulation
  • 2 piston valves (secondary flow and return) of which 1 (return) incorporating anti-thermosiphon check valve 150mmCE (can be opened)
  • Solar Primary
  • Primary safety group:

– Solar safety valve 6 bar – 3/4” int
– Solar fill valve
– Pressure gauge 0-6 bar
– Expansion vessel connection 3/4″ ext with flat seal

  • Solar electronic flowmeter 2-50 l/min
    Simple high efficiency solar circulator pump GRUNDFOS SOLAR PML 25-145
    Secondary safety valve 10 bar
    Simple domestic high efficiency circulator pump GRUNDFOS UPML 25-105 N
    Secondary drain valve
    Primary solar drain valve
    Solar controller 600i with 4 temperature sensors Pt1000 including 2 installed on the primary for heat quantity measurement (with primary flowmeter)



Available model: