Solar thermal heating systems

Solar water heating systems take advantage of the free heat supplied by the sun to warm domestic hot water (DHW). These solutions provide DHW throughout the year, and they can be supported by boilers or immersion heaters to ensure you have hot water whenever you need it.

If you are planning to replace your existing boiler and already have solar panels on your home, many of our products are designed to support the use of energy from these panels to supplement your heating with a completely natural, green energy source. We also offer a range of solar collectors, and if you are investing in a new heating system, we advise you to consider designing it from the outset to incorporate these collectors. We provide evacuated tube and flat plate collector systems, both of which can be mounted on your roof.

Taking advantage of this renewable energy technology will help you to lower your consumption of mains energy, which in turn will reduce your fuel bills and cut your carbon footprint.

One of the guiding principles here at Viessmann is that “nothing is ever that good that it cannot be improved”. This philosophy has helped us to become a leader in our sector and means we are constantly aiming to set new standards.

This is evident in our product range, which is geared towards cutting the use of fossil fuels and gradually replacing them with renewable sources of energy. Our solar flat plate solar collectors are designed to be integrated seamlessly with our condensing boilers to achieve the best possible results. Our condensing boilers convert up to 98 per cent of fuel oil or gas used into heat. So, when these two technologies are combined, they can bring major savings in terms of your heating costs and they can reduce your usage of fossil fuels – which is obviously good news for the environment.

Our flat plate collectors can also be used in combination with a wood heating system or a heat pump.

Flat plate solar collectors harness the free energy provided by the sun to help you reduce your energy bills and lower your carbon footprint. The systems collect warmth from the sun and use it to heat up water, which is then stored in a highly insulated hot water cylinder.

These collectors provide hot water throughout the year, and when supplemented with other heating sources such as condensing boilers, they ensure you have access to all the heating and hot water you need. Their peak output occurs during the summer, but because they are so efficient, they produce hot water year-round even in cloudy conditions.

Viessmann solar collectors can save on average up to 60 per cent of the energy needed each year for domestic hot water (DHW) heating. This means that investments in this technology pay off in just a few years and can bring significant long-term financial benefits. Combined with a condensing boiler, this type of solar energy can help you to lower your total energy consumption by over a third.

The second unit of the Vitovalor serves primarily to provide heat during times of peak demand. That is, when it is very cold outside or when a lot of hot water is required at short notice. It consists of a gas fuel cell appliance, a DHW cylinder, a heat exchanger and a heating water buffer cylinder with integral indirect coil for DHW heating. Other components in the second unit are a weather-compensated control unit, hydraulic components and an electricity meter. Both units are supplied via a common gas line. They also share a common flue system, which makes installation as easy as for a wall mounted gas condensing boiler.

Featuring an individual absorber area of 2.3m², these powerful flat plate collectors can be matched to any energy demand. They can be installed vertically or horizontally and benefit from a ThermProtect absorber layer.