CS 20 Solar Collector

Solar collector assembly

Pressurized solar collector with 20 vacuum tubes and heat-pipe technology is designed for residential, commercial and industrial applications of solar heating. This product can be used for preparing domestic hot water, house heating, pool heating or industrial thermal agent heating.

Each tube is working independently and damaging one tube does not block the system but it only reduces the collector’s absorbtion and efficiency rate. .

The vacuum tubes are equipped with heat-pipe and there is no running water inside. Vacuum tube solar collectors offer the highest solar energy absorption rate. The vacuum tubes are made of borosilicate glass which is inner coated with 3 absorption layers which amplify the effect of solar irradiation. The vacuum between the tubes walls ensure that the absorbed thermal energy in transferred without heat losses to the collector’s manifold. The cylindrical shaped tubes ensures optimal performance during the day, with good efficiency even if sky is partly cloudy.

Package component 

  • Solar header / manifold (one piece)
  • Mounting frame for 20 tubes ( one set)
  • 20 vacuum tubes – 58x1800mm,  Cu/SS/AlN
  • 20 heat-pipes with 22 mm condenser
  • 20 vacuum tubes plastic holders
  • 20 vacuum tubes silicone rubber gaskets
  • Thermal conductivity paste
  • Instruction manual, warranty certificate, CE certificate

Solar collector warranty  – 10 years

  • Dimensions (mm) : 1670 x 1990 x 125
  • Weight : 63 kg
  • Absorption surface : 1.98 mp
  • Total surface : 3.32 mp
  • Liquid capacity : 1666 ml
  • Maximum pressure : 800kpa/116Psi
  • Heat-pipe stagnation temperature : 180°C
  • Vacuum tubes stagnation temperature : 280°C


  • Maximum Output: 1290 W / 4420 Btu
  • Optimum flow rate : 2.5 l/min
  • Pressure loss at optimum flow rate : 1.2 KPa (12 mbar)
  • Maximum flow rate : 189 l/min
  • Daily heating capacity (Δ40°C) : 140-200 l

Heat pipe vacuum tubes

  • Vacuum tubes with 3 absorption layers (Cu/SS-ALN(H)/SS-ALN(L)/ALN) which permits an absorption of  96% and a stagnation temperature of 280°C
  •  22 mm heat pipe condenser

Header / manifold

  • Stainless steel housing with PVC foil protection
  • Ø 42 mm copper heat exchanger , insulated with rock wool and rigid PU foam
  • Sensor pockets equipped on each end
  • 3/4″ M connections, pre-insulated

Mounting frame

  • Extruded aluminum profiles