Oil low-temperature boilers with more than 400 kW

Larger buildings usually have a greater heat demand. This can be covered economically and reliably with Viessmann low temperature oil boilers. In addition to oil condensing boilers for detached houses and two-family homes, Viessmann also offers oil boilers with proven calorific value technology - and in the accustomed quality and output range from 400 to 2,000 kW.

Vitoplex 300 low temperature oil boiler with multi-shell convection heating surfaces

Whether for large residential buildings, commercial premises, new build, modernization or industrial plants: Viessmann has developed the right low-temperature oil boiler for every application. One of these is the Vitoplex 300. With its multi-shell convection heating surfaces made from specially seamed tubes, as a three-pass boiler it offers particularly economical, low-pollution and reliable operation. This is because, thanks to their design, the interlocking and heat-conducting steel tubes have a heating surface 2.5 times larger than smooth tubes. They are also designed so that the surface temperature remains above the dew point during heat transfer. This prevents condensation from forming and prevents corrosion damage.

The Vitoplex 300 also features the integrated Therm-Control start-up circuit. It replaces the mixing pump or continuous return temperature boosting, thus saving installation time and costs. To facilitate installation and maintenance, low temperature oil boilers with a rated heat output of more than 620 kW are equipped with a walk-on boiler cover. The Vitoplex 300 is controlled via the easy-to-use Vitotronic control unit with color touch display.


Proven Viessmann quality up to 2000 kW for oil and gas and high standard seasonal efficiency.

Here, you can find the exact solution to suit your needs in terms of building services, convenience and budgetary constraints.

Oil low-temperature boilers for different requirements

As an alternative to the Vitoplex 300, the Vitoplex 200 can also be used. The compact steel oil condensing boiler comes with a rated heat output of 440 to 1,950 kW and can be adapted with a wide range of burners. Up to 560 kW, the Vitoplex 200 also features the Therm-Control start-up circuit. A walk-on boiler cover is provided from 700 kW. The Vitoplex 200 achieves a standard efficiency with fuel oil of up to 89 percent. It is easy to operate via the Vitotronic digital control system with communication capability and enables complete integration into building management systems.

The Vitorond 200: Flexible in design

Another oil-fired condensing boiler for use in buildings with large heat demand is the Vitorond 200. It has a segmental design and is used when the available space makes it difficult or even impossible to install a compact boiler. It can be disassembled into individual parts (cast segments) and easily assembled on site using a pressing tool. The Vitorond 200 is particularly suitable for use in older buildings, where space is often at a premium. Despite the segment design, the heating value boiler for oil covers output ranges from 440 to 1,080 kW and also comes with Vitotronic control ex works.

The right oil-fired condensing boiler for every need

From historic monuments and high-performance industrial buildings to large-scale residential and commercial complexes: Viessmann has always developed the right innovative heating solutions for a wide range of challenges. By using energy resources sustainably and sparingly, the heating systems make an active contribution to climate protection.