Vitodens 343-F: Viessmann - Germany

Vitodens 242-F

Solar ready, incorporating three technologies in one package

The gas fired compact condensing boiler Vitodens 242-F, with integral DHW cylinder, is factory prepared for the direct connection of a solar thermal system. The solar control module is already integrated and is regulated via the Vitotronic 200 control unit. A convenient DHW supply is ensured by the 170 litre dual mode DHW cylinder. 
For ease of handling, the Vitodens 242-F can be transported in two parts.

Award winning control unit

The Vitodens 242-F is also equipped with the award winning and user-friendly Vitotronic control unit. Featuring weather compensation capability with 7-day programming as standard, the control can also be sited up to 5 m away from the boiler, enabling installation in areas with restricted access, e.g.if the boiler is installed in a garage. The graphic interface will also display heating curves and solar yield.

Dynamic burner cycling

Adjusts the burner firing duration according to the seasonal heating requirements to ensure the burner burns for longer and less frequently, to increase efficiency and reduce operational wear and tear, e.g. during Spring and Autumn when heating requirement is reduced. 

Take advantage of these benefits:


  • Rated outputs: 19 kW and 26 kW
  • 2 year parts and labour warranty
  • 10 year warranty on the Inox-Radial stainless steel heat exchanger
  • Exceeds SEDBUK minimum efficiency requirements
  • MatriX cylinder burner with Lambda Pro combustion control for permanently
    high efficiency and clean combustion
  • DHW cylinder with 170 litre capacity and solar indirect coil
  • Vitotronic 200 control unit is easy to operate with plain text and graphic display, plus programming unit that can be mounted seperately in a wall mounting base
  • Universal connection sets for individual installation flush with the wall
  • No side clearance required
  • Solar coverage up to 60%
  • Full range of solar kits, containing every required component, are available for the Vitodens 242-F


View Vitodens 242-F boiler here

View Matrix burner technology here

View Viessmann Company video here