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Viessmann Vitodens 100-W Heat Only B1GA 25 kW - 7959997

SKU 7959997
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VITODENS 100-W HEAT ONLY

A compact and efficient heat-only gas boiler

A heat-only, wall-mounted gas-fired condensing boiler which is compact enough to fit in a standard kitchen cupboard. Also suitable for use in other applications with limited space available.

  • Rated outputs: 11 kW, 16 kW, 19 kW, 25 kW and 32 kW
  • Compact dimensions to fit in standard kitchen cupboards
  • ERP efficiency 93% (Class A)
  • Weather compensation option large user display
  • 5-year comprehensive warranty as standard
  • Viessmann Trained Installers can now offer their customers an extended warranty option up to 12 years

Key Benefits
Efficient, durable, quiet
The corrosion-resistant stainless steel Inox-Radial heat exchanger with unrivalled wall thickness is extremely durable and achieves efficiency levels of up to 93%.

The boiler's special design ensures a very low operating noise of 39 dB(A) maximum (26 kW), which is perfectly acceptable even in the kitchen.



Inox radial burner
Weather compensation
Intelligent weather compensation
The Vitodens 100-W Open vent can even operate in weather compensated mode without incurring a costly heating system modification, all that is needed is a simple upgrade.

Weather compensation acts like an auto-pilot as it detects outside temperature changes and automatically adjusts the flow temperature of the boiler, achieving gas savings of up to 12% in the process.

Compact dimensions
With a depth of only 285 mm (340 mm on the 32 kW model) the compact Vitodens 100-W Open vent boiler is perfectly suited for integration into standard kitchen cupboards.

It can also be used in a vast number of other applications where there is only limited space available.

Versatile system solutions
Whilst being specifically designed for open vent heating systems, the Vitodens 100-W heat only is suitable for sealed systems using an additional expansion vessel safety valve.

Product details

  • Output in kW - 11 to 32 kW
  • Standard seasonal efficiency [to DIN] - 98 % (Hs) [gross cv]
  • Energy efficiency class - A
  • Fuel - Natural gas, LPG, 20 % hydrogen mixture
  • Application area - Detached/terraced houses, apartments, for new build and modernisation projects
  • Additional features - MatriX-Plus burner with Lambda Pro combustion controller for permanently high efficiency and clean combustion. Certified for 20 % hydrogen content in natural gas.
Downloads

Compatible Installation Accessories  
Note:- Search Product Accessories code in Store Search bar.

BOILER CONTROLS

Product Code  Description
7141709 Vitotrol 100 room thermostat hard wired
7170149 Vitotrol 100 UTA analogue programmable room thermostat 24h hard wired
Z007691 Vitotrol 100 UTDB digital programmable room thermostat - 7 day, single channel hard wired
Z007933 Weather compensation outdoor sensor (incl DHW demand box)
   
BOILER ACCESSORIES
Product Code Description
ZK04647 Contact thermostat for underfloor heating with connection cable (1.5 m long)
ZK06130 WiFi Modem including cable