Roof Mounted Solar Heating Panels

By: Clean Energy Ireland  05/12/2011
Keywords: heating system, Solar Heating, safety glass



  • High output from high output solar collectors.
  • Elegant while robust.
  • Self-Cleaning Glass.
  • Roof mounting kits and bolts available.
  • Life expectancy more than 20 years
  • Frame can adjust to match rafters
  • Corrosion resistant components (Stainless Steel & Aluminium).
  • Designed, Manufactured & Tested in Germany.
  • Flat Seal fittings (No compression components).
  • SEI registered SEI-ST-324.
  • No Pipes Showing.

Distinguishing features of the K420 DH roof mounted flat panel solar heating system is its optimised aperture area, their high efficiency and elegant design, as well as simple and flexible installation. The new collector housing contains laser-welded Cu or Al absorbers with 2 hydraulic interfaces on the top of the collector.

The rigorous prevention of thermal bridges allows the highest output levels. The secure glass mount featuring two separate sealing levels made of UV-resistant material guarantee ultimate product reliability and durability. The frame profiles are manufactured from high-strength, corrosion-protected aluminium. They are available in a number of RAL colours.


Type of construction Flatplate solar heating system for on-roof, in-roof, flat-roof and facade mounting
Absorber type KBB absorber with Al-sheet and Cu-tubes , Absorber with 10 harp tubes ø8mm and 2 manifolds ø18mm
Measurement 1,870 x 1,150 mm
Gross area 2.15 m²
Height 95 mm
Absorber area (net) 2.0 m² (=aperture area)
Total Weight dry 34 kg
Liquid content 1.13 l
Efficiency η0 80.1 %, related to the aperture area
Heat loss coefficient a1 3.72 W/(m²K)
Heat loss coefficient a2 0.0157 W/(m²K²)
Max. stagnation temperature 203 °C
Absorber coating Highly selective on Aluminium (eta plus_al)
Absorption 95 %
Emission 5%
Covering Low iron, structured, solar safety glass (ESG)
Transmission of covering 91 %
Impact resistance of covering Cover passed the optional impact resistance tests following EN12975-2.
Nominal flow 100 l/h (low flow conditions: 50 l/h)
Nominal pressure loss 10 mbar (low flow conditions: 5 mbar, water/propylene-glycol 20°C)
Hydraulic connection Series connection with collectors side-by-side
Collector connection 2 connectors at on top, 1/2“ male thread, flat sealing
Max. operation pressure 10 bar
Heat insulation Mineral wool 50 mm
Collector case Aluminium frame, powder coated
Angle of inclination 20 – 90°

Our roof mounted flat panel solar heating systems are available for purchase and installation in Cork, Dublin and Clare.  for more information

Keywords: heating system, Panel Solar, safety glass, Solar Heating, Solar Heating Panels

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