Vitosol 100-FM

Flat-plate collector

High performance flat-plate collector with ThermProtect switching absorber layer

ThermProtect absorber layer
High levels of solar coverage
Universal mounting
Quick and reliable connection
ThermProtect absorber layer

High performance Vitosol 100-FM flat-plate collector with ThermProtect switching absorber layer

High levels of solar coverage

For central heating backup and DHW heating

Universal mounting

Can be installed horizontally or vertically for above roof installation, flat roof installation, roof integration or façade mounting.

Quick and reliable connection

Through flexible, corrugated, stainless steel push-fit connectors

No overheating

When outside temperatures are high or with low heat transfer

Permanently sealed

By all-round frame and seamless pane mounting

Attractive design

Available with an aluminium coloured frame

Vitosol 100-FM flat-plate collectors

Vitosol 100-FM 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.

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.

Easy installation

The collectors are particularly easy to install. Integral flow and return pipes enable safe installation even of larger collector arrays using flexible, corrugated, stainless steel 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.

ThermProtect prevents overheating

An intelligent absorber layer protects the collectors from overheating. Viessmann's patented ThermProtect technology prevents further energy absorption once a certain temperature has been reached, when the solar cylinder is fully heated.

ThermProtect also leads to higher yields with the Vitosol 100-FM compared to conventional flat-plate collectors, as more generous sizing is possible.

The integrated range of solutions for the Vitosol 100-FM

Benefit from the value added services and digital services of Viessmann's integrated range of solutions.


The Viessmann FörderProfi service streamlines and simplifies the entire subsidies process, from application to payment.

More about FörderProfi

Product details

Gross area

2.51  m²

Absorber area

2.32  m²

Collector type

Flat-plate collector


The Vitosol 100-FM is available with an aluminium coloured frame.

Application area

Residential buildings, commercial enterprises, local authority premises, new build and modernisation projects.

Installation type

Flat-plate collector for vertical (type SV1F) or horizontal (type SH1F) installation, for installation on flat and pitched roofs.

Additional features

For heating DHW, heating water and swimming pool water via a heat exchanger.

Product cross-section