Vitoplex 300

Economical, clean and reliable

Vitoplex 300

Low temperature oil/gas boiler

Low temperature oil/gas boiler with multi layered convection heating surfaces made from triplex pipes.

Rated heating output: 405 to 2000 kW
Standard seasonal efficiency [to DIN] using fuel oil: 90 %
Integral Therm-Control start-up system
Multi layered convection heating surfaces
Low temperature oil/gas boiler

Rated heating output: 405 to 2000 kW

Standard seasonal efficiency [to DIN]

With fuel oil: 90 % (Hs) [gross cv]

Multi layered convection heating surfaces

For high operational reliability and a long service life

Integral Therm-Control start-up system

Replaces the shunt pump or constant return temperature raising, thereby saving installation time and costs

Optional stainless steel flue gas/water heat exchanger

For higher standard seasonal efficiency [to DIN] by utilising condensing technology

Three-pass boiler with low combustion chamber loading

Thanks to clean combustion with low emissions

Walk-on boiler cover

From 620 kW – facilitates installation and maintenance

Easy to use Vitotronic control unit

With colour touchscreen for excellent ease of use

Integral LAN interface

For internet communication and integral WiFi for service interface

Economical and safe operation of the heating system

Vitotronic digital control system with communication capability

Standardised LON bus

Enables complete integration into building management systems

Vitoplex 300 low temperature oil/gas boiler

Three-pass boiler with integral start-up control

The Vitoplex 300 three-pass boiler, with its proven multi layered convection heating surfaces, offers particularly economical, clean and reliable operation.

Multi layered convection heating surfaces made from triplex pipes

The multi layered convection heating surfaces of the Vitoplex  300 are comprised of telescopically arranged steel pipes pressed into each other for ideal heat transfer. The inner pipe, with its folded linear fins, creates a heating surface 2.5 times greater than that of smooth pipes.

Heat transfer occurs proportionately due to the different gaps between the press points, so the back area of the triplex pipes transfers less heat to the boiler water, as the combustion gases circulating here are no longer quite as hot. This way, the surface temperature remains above the dew point, the formation of condensate is counteracted and corrosion damage is prevented.

Convenient and highly capable Vitotronic control unit

The user friendly Vitotronic control unit with a large colour touchscreen enables quick commissioning using the assistant function. The boiler can be connected directly to the internet for remote monitoring via the integral LAN interface. The Vitosoft  300 service tool communicates directly via WiFi. Energy consumption can be clearly visualised on the control unit's energy cockpit.

Product details

Output (kW)

405 to 2000  kW

Standard seasonal efficiency [to DIN]

For operation with fuel oil: 89  % (Hs) [gross cv]


Natural gas E and LL. All commercially available EL fuel oils can be used. Suitable burners for the Vitoplex 300 available from Weishaupt and ELCO.

Application area

Large residential buildings, commercial enterprises, local authority premises, new build and modernisation projects


Easy to operate Vitotronic  control unit with colour touchscreen. Integral LAN interface for internet communication and integral WiFi for service interface.

DHW heating

Additional DHW cylinder(s) required for high level of DHW convenience

Additional features

The integral Therm-Control start-up system replaces the shunt pump or constant return temperature raising, saving installation time and costs. From 620  kW with walk-on boiler cover for easier installation and maintenance.

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