Compact yet powerful

The new Vitoradial 300-T oil fired condensing boiler is extremely compact and is supplied as a Unit with a downstream flue gas/water heat exchanger and the new Vitoflame 100 pressure-jet oil burner.

Triplex pipes for 2.5-times larger heating surface

The multi-layered convection heating surfaces of the Vitoradial 300-T are comprised of
telescopically arranged steel pipes pressed into each other for ideal heat transfer. The internal tube with its folded linear ribs provides a heating surface 2.5-times larger than that of smooth pipes. The heat throughput is metered by the different intervals between the press points so that the back area of the triplex tubes, through which slightly fewer hot combustion gases circulate, transfers less heat to the boiler water. This way, the surface temperature remains above the dew point, the formation of condensate is counteracted and corrosion damage is prevented.

Inox-Radial heat exchanger

The two-stage heat development of the Vitoradial 300-T in combination with the downstream Inox-Radial heat exchanger ensures that the highly efficient condensing technology can also be used in medium-sized and industrial/commercial boiler systems. The seasonal efficiency [to DIN] is raised by 8% to 98% (Hs). This principle ensures that combustion and condensation occur in physically separate locations, so the combustion gases condense in a location which is free of deposits. In practice, this means standard service intervals for cleaning the combustion chamber and low
maintenance costs. The new Vitoradial 300-T is available up to 300 kW output. The stainless steel Inox-Radial heat exchanger is highly efficient. This prevents the danger of corrosion through acidic condensate.

Benefits at a glance:

■Standard efficiency for operation with fuel oil: 98% (Hs) / 104% (Hi)
■Inox-Radial heat exchanger for condensing hot gases, matched to the compact oil fired boiler
■Complete with heat exchanger pipework and pump, matched to the respective boiler output
■New pressure-jet oil burner Vitoflame 100
■Long burner runtimes and fewer switching intervals due to large water content protect the environment
■Economical and safe operation of heating systems through the digital Vitotronic control system with communication capability
■Integral Therm-Control start-up system for easy hydraulic connection – no shunt pump or return temperature raising facility are required
■No low water indicator required, saving you even more
■Compact design for easy handling and low build height – important for modernisation

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