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flat thermal panel / with aluminum frame
RA251-4 Ratiotherm



  • Technology:


  • Other characteristics:

    with aluminum frame


Recently added to product range

is our high quality flat plate solar thermal collector for Vertical and Horizontal mounting in addition to traditional mounting methods.

The special features of the RA251-4 are:

Vertical, Angled and Horizontal mounting
Anodised charcoal colour in double wall aluminium frame,
Laser welded harp absorber with 10 harp tubes and a blue, highly selective vacuum coating
Mineral wool thermal insulation with a low content binding agent to rear panel and sides.
Hail resistant, low iron safety glass, 4 mm thick aperture cover
Gross area 2.51 m²
Aperture area 2.22 m²
Fluid content 1.3 Litre
Minimum collector yield > 525 kWh/m²a
Connections 4 x EF 18 mm
Dimensions 2340L x 1073W x 90D
Weight 46 kg
Operating pressure 10 bar Max.
Max 6 collectors per row

Other Ratiotherm products