Vitosol 100-FM: A high performance flat-plate collector

High performance Vitosol 100-FM flat-plate collectors are the perfect addition to any heating system. With an individual absorber area of 2.3 m², solar collectors can be effectively matched to any energy demand.

On average, they can replace up to 60 percent of the energy that would otherwise be required each year for DHW heating, and contribute to central heating backup. When used in conjunction with a condensing boiler, free solar energy can help you reduce your annual energy consumption for heating and DHW by over one third.

Vitosol 100-FM is very suitable for tropical climates like those of Indonesia with sun exposure all year round, thus providing great opportunities for creating energy.

The benefits at a glance:

  • Higher solar coverage for central heating backup and DHW heating
  • Can be installed horizontally or vertically
  • High performance flat-plate collector with switching ThermProtect absorber layer
  • Universally suitable for above roof installation, roof integration, flat roof installation, or wall mounting
  • No overheating or vapour formation in the case of low heat demand
  • Absorber area 2.3 m²


If the switching temperature is exceeded, the crystalline structure of the absorber layer changes, increasing the rate of heat radiation many times over, and reducing collector output. The stagnation temperature thus drops significantly, preventing the formation of steam in the solar circuit.

As the collector temperature falls, the crystalline structure returns to its original state. More than 95 percent of the incoming solar energy is now absorbed and converted into heat. Only the remaining five percent is reflected. There is no limit to the number of times the change in crystalline structure can be activated, making this function permanently available.

Permanently sealed and well insulated

The all-round folded aluminium frame and seamless pane mounting ensure permanent tightness and a highly stable collector. The back panel is puncture-proof and corrosion-resistant. Highly effective thermal insulation reduces heat losses, particularly in spring, autumn and winter.


Straightforward installation

The collectors are particularly easy to install. The integral flow and return pipes enable safe installation, even for larger collector arrays, using flexible corrugated stainless steel pipe push-fit connectors. Up to twelve solar collectors can be easily linked together.

The flat-plate collectors can be used universally for above roof installation, roof integration and installation on collector supports, for example on flat roofs. The easy-to-assemble Viessmann fixing system consists of load-tested and corrosion-resistant components made from stainless steel and aluminium.

Vitosol 100-FM Specifications


Gross area
2.51 m²
Absorber area
2.32 m²
Collector type
Flat plate collector
The Vitosol 100-FM is available with an aluminum-coloured frame
Application range
Residential, commercial, public | New construction and modernisation
Flat plate collector for vertical (type SV 1 F) or horizontal (type SH1F) assembly, for flat and pitched roofs
Additional features
Additional features