Solar tanks

Solar fresh water tank FS/1R

FS/1R – Solar fresh water tank with one coil

Simple combination tank made of steel (S 235 JR) for hot-water operation and domestic hot water preparation with a solar system. Solar charging is by a smooth pipe coil in the lower half of the tank. The tank has an integrated corrugated stainless-steel pipe in which the water is heated using the hygienic continuous heating process. All necessary connections are at hand; includes 2x 1" 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, cost-effective utilisation of solar energy for hot water and heating
  • Backup heating from all common systems possible; attention: heat pump with restrictions!
  • Hygienic water heating due to a special corrugated stainless-steel pipe1 (DN 40, 1.4404)
  • 6 temperature measuring points (contact sensor sleeves) on tank
  • Option to install TiSUN solar station and expansion container on tank
  • Prepared for use with 1 electric screw-in heating element


  • 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