Vitodens 242-F – solar DHW storage

This storage combined floor standing condensing boiler is designed specifically for direct connection to a solar thermal system. Incorporating three technologies in one; gas condensing boiler, DHW cylinder and solar control package, for where space is at a premium.

Benefits at a glance

  • Can reduce your hot water energy usage by 60%
  • Unvented cylinder with 170 litre capacity and solar indirect coil
  • DHW secondary circulation pump can be integrated inside the appliance
  • Dynamic burner cycling reduces the number of burner starts over the year by a thirdWide modulation ratio of 1:6, e.g. 5.2 kW to 35 kW, ensures optimised burner operationFactory fitted cylinder solar pumpEnergy efficiency class: A


Heating contemporary and environmentally conscious

For modern heating with condensing and solar technology in detached houses, the Vitodens 242-F is an extremely energy-saving, environmentally friendly and advanced heating system.

With a footprint of only 0.4 m² this compact unit takes very little space and fits in any niche. The gas condensing boiler Vitodens 242-F is extremely quiet and highly efficient.

For immediate or later combination with solar collectors, Vitosol, the Vitodens 242-F is prepared ready for connection. The control module for regulating the solar thermal system is already integrated, and the solar yield is shown on the device display. All functions are matched to one another and have been factory tested.


Product cross-section


Output (kW)
3.2 to 26 kW
Standard seasonal efficiency [to DIN]
98 % (Hs) [gross cv] / 109 % (Hi) [net cv]
Energy efficiency class
Natural gas and LPG
Application range
Detached houses, new build and modernisation projects
Vitotronic 200 control unit with plain text and graphic display, can be operated by means of the Vitotrol app
DHW heating
High DHW convenience thanks to enamelled, dual mode loading cylinder with 170 litre capacity and solar indirect coil
Additional features
Combi boiler with integral solar DHW heating
Produktschnitt Gas-Brennwert-Kompaktgerät Vitodens 242-F


A perfect match – System technology

"The whole is greater than the sum of its parts". Following this philosophy, Viessmann supplies more than high quality, reliable and effective heating components. In fact, all products are part of a matching total concept, where all components complement one another. After all, only perfect interaction between all system components can draw out the maximum potential of our innovative leading technology.

Viessmann system technology incorporates everything you need for a reliable and economical heating system: From the Vitotronic control unit with wireless remote control, powerful Vitocell DHW cylinders for the highest DHW convenience, right up to high grade solar thermal systems for cost effective central heating backup.