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Viessmann Vitodens 200-W Combi Boiler 35kW B2KF (7956246)


1 in stock (can be backordered)

Viessmann Vitodens 200-W Combi Boiler 35kW B2KF (7956246) Z020316

*Body only. This product requires valves, fittings or spacer frames for fitting. These items are sold separately.


  • Output 1.9 to 35kW
  • Up to 12 years warranty
  • Energy efficiency class: A
  • Durable and efficient thanks to Inox-Radial heat exchanger
  • MatriX-Plus burner with Lambda Pro Plus combustion controller for consistently high efficiency and clean combustion
  • Innovative operating concept with 7 inch colour touchscreen
  • Web-enabled via integral WiFi interface for operation and service via Viessmann apps
  • Futureproof: H₂ ready, certified for the combustion of natural gas with 20% hydrogen (H₂)
  • Efficient, up to 98% ERP efficiency
  • Modulation range 1:17
  • Compact dimensions, only 450 mm wide

Product Features:

  • Advanced technology: Equipped with a 7″ color touch screen control and outdoor temperature sensor for weather compensation operation.
  • Integral Wi-Fi interface: Connect to the internet with ease and access the ViCare app without the need for a Vitoconnect 100.
  • High efficiency: With a standard seasonal efficiency of 98% (Hs) [gross cv], the boiler is energy-efficient and has an energy efficiency class A.
  • Modulation range: The boiler has a modulation range down to 1:17 for greater flexibility.


  • Intuitive controls: The straightforward and user-friendly 7″ color touch screen makes operation extremely convenient.
  • Integral WiFi interface: Connect to the internet with ease and access the ViCare app for added convenience.
  • High reliability: Thanks to the integral Lambda Pro Plus combustion controller, the boiler is highly reliable in operation.
  • Improved efficiency: The new MatriX-Plus burner ensures greater efficiency and lower nitrogen oxide emissions.
  • Energy cockpit: Keep track of energy consumption at a glance with the energy cockpit feature.
  • Solar thermal integration: The boiler is suitable for integrating with a solar thermal system.
  • Fluorescent light guide: The light guide lets you easily check if everything is working properly.
  • Large water capacity: With a large water capacity and low cycling frequency, the boiler operates efficiently even when little heat is drawn off.
  • Durable and efficient: The Inox-Radial heat exchanger is efficient and durable, with a 10-year warranty.
  • Long service life: The MatriX-Plus burner has a long service life thanks to its stainless steel MatriX perforation.
  • Lambda Pro Plus combustion controller: The controller is suitable for all gas types, ensuring efficient and clean combustion.
  • Quiet operation: The boiler operates quietly thanks to its low fan speed and high efficiency internal pump.
  • Latest software: The boiler is supplied with the latest software and programming features for optimal performance.

Standard Delivery:

  • Modulating, fan-assisted premix burner with Lambda Pro Plus
  • Control unit with integral Wi-Fi interface
  • Integral safety valves
  • Variable speed high efficiency circulation pump and 3-way valve
  • Expansion vessel (10 litres)
  • Fully plumbed and wired
  • Wall mounting bracket
  • Boiler flue connection
  • Outside temperature sensor
Boiler Depth 360 mm
Boiler Height 700 mm
Boiler Type Combi
Boiler Width 450 mm
Brand Viessmann
BTU 102,364 BTU
CALC – Fuel Type Gas
Colour VitoPearl
Compatible with Solar Panels Not Compatible with Solar Panels
Display Type Touchscreen Display
Energy Rating (Heating) A
Energy Rating (Water) A
Filling Loop Supplied Filling Loop Supplied
Fitting Requirements Must be Fitted by a Gas Safe Registered Installer
Fixing Jig Supplied Fixing Jig Not Supplied
Flow Rate (Ltr/Min) 15.69 Ltr/min
Flue Connection Diameter 60/100 mm
Flue Outlet Position Top Flue Outlet
Flue Supplied Flue Not Supplied
Frost Protection Frost Protection
Fuel Type Gas/LPG
Indoor/Outdoor Usage Indoor
Manufacturer Guarantee 5 Year Manufacturer’s Guarantee (T&Cs Apply)
Max. Heat Output CH (Pn) 25 kW
Max. Heat Output DHW (Pn) 30 kW
Model Name/No 200-W Z020315
Pack Size 1
Pieces in Pack/Case 1
Product Returns Note We cannot accept the return of unwanted boilers if the box/packaging has been opened (your statutory rights are not affected).
Product Type Boiler 25kW
SAP Seasonal Efficiency 98 %
Sound Pressure Level 46 dBA
Suitable for Underfloor Heating Suitable for Underfloor Heating
Supplier Manufacturer Helpline 01952 675000
Temperature Range (Heating) 20-82 °C
Temperature Range (Water) 30-60 °C
Total Product Weight 42 kg



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