Solar tanks

Solar fresh water tank FS/WP

FS/WP – Fresh water tank for heat pump

Simple combination tank made of steel (S 235 JR) for hot-water operation and domestic hot water preparation with a heat pump. The tank has an inflow absorber and a generously proportioned stand-by part by which the water is heated with an integrated stainless steel corrugated pipe using a hygienic, continuous heating process. All necessary connections are at hand; includes 2x 2" sleeves for electric screw-in heating elements. The tank stands on a stand ring. The polyester fibre fleece insulation must be ordered separately.

Area of use
Water heating and heating operation with a solar system for single-family and semi-detached houses.

Product benefits

  • Simple and cost-effective domestic hot water heating, especially in connection with a heat pump or conventional gas/oil boiler heating systems.
  • Inflow absorbers prevent the 2-zone layers in the tank from mixing
  • Generously proportioned hot water stand-by part (~ 55% of the tank volume)
  • Hygienic water heating due to a special corrugated stainless-steel pipe1 (DN 40, 1.4404)
  • 5 temperature measuring points (contact sensor sleeves) on tank
  • Prepared for use with 2 electric screw-in heating elements (photovoltaic feed-in)


  • Simple utilisation of solar energy for hot water and heating
  • Germ-free fresh water heating using special corrugated stainless-steel pipe
  • Improved economic efficiency for every heating system (solar, biomass, heat pump)
  • Constant, particularly quick hot water supply
  • Simple functional concept without complicated technology (natural principle)
  • Space-saving design
  • Five-year guarantee, patented system
  • Additional heating with all traditional heating systems
  • Long service life