Viessman Vitodens 30kw Combi

The Vitodens 100-W high efficiency gas condensing boiler, manufactured by Viessmann in Germany, is loaded with features for easy installation, high efficiency and impressive fuel savings.


  • 5 year comprehensive boiler warranty as standard.
  • 10 year warranty on the Inox-Radial heat exchanger.
  • Viessmann Trained Installers can offer their customers an extended boiler warranty option up to 10 years.

MatriX cylinder burner:

  • Patented technology, manufactured by Viessmann.

Inox-Radial heat exchanger:

  • Excellent corrosion resistance.
  • Self-cleaning.
  • Counteracts dirt and sludge deposits.
  • 10 Year warranty against corrosion.

Intergral Grundfos AquaBloc hydraulic unit:

  • For easy service .

Features and benefits:

  • Same output for Heating and Hot Water (up to 35 kW).
  • Combined PRV and condense connection, saving time and expense.
  • Improved installation options with max flue length up to 17 meters.
  • New case design to improve service access; along with reducing weight and noise.
  • Integral filing loop.
  • Range rate CH to 25% of maximum output and match output to meet Building Regulations.
  • Simple conversion kit to LPG.
  • Integral auto by-pass.
  • Optional sub-mounted mixer kit ideal for under floor installations.
  • Compact dimensions.
  • Hot water flow rate up to 10.6 l/min (26kW) 12.30 l/min (30kW) 14.3 l/min (35kW) @35c
  • High efficiency A rated pump with automatic speed control (only with outdoor sensor).

Easy Installation:

  • Safety valves and fittings.
  • Fully assembled and wired.
  • Boiler flue connection.
  • Gas tap.
  • Installation aids are available such as pre-plumbing jig and rear-piping frames (see accessories below).


    • Controls with large LCD display.
    • Plug in controls with wireless operation.
    • Optional weather compensation control for additional gas savings of up to 12%.


Specification Measures
DHW Output 30.0 kW
Depth 350 mm
Width 400 mm
Height 700 mm
Weight 38 kg
Flue Gas Connection d = 60 mm
Ventilation Air Connection d = 100mm