Vitoligno 300-C

Compact wood pellet boiler

Floor-standing, fully automatic wood pellet boiler. Rated input: 44 to 193 MBH.

Compact, flexible design
Automatic ash removal
CO₂ neutral heating
Award winning design

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High efficiency

Up to 85% efficiency for excellent utilization of wood energy.

Very low emissions

With innovative combustion technology.

Flexible fuel feed options

Use a pellet vacuum system with hopper, or an auger system.

High operational reliability

Provided by rotary lock valve, for 100% back-burn protection.

Intelligent control unit

Weather-compensated digital Ecotronic control unit included.

Low power consumption

Automatic ignition with ceramic heating element.


Discontinuation notice

The  Vitoligno 300-C boiler series has been discontinued in North America.  If you are looking to purchase a new wood-fired boiler, please consider the Vitoflex 300 series.

Vitoligno 300-C

The compact Vitoligno 300-C is a fully automatic wood pellet boiler for a wide range of applications – from residential homes to buildings with a higher heat demand. The boiler features an input range of 44 to 193 MBH at a modulation ratio of 1:3, and ultra-low energy consumption.

Efficient and environmentally responsible

The Vitoligno 300-C offers high efficiency up to 85% when converting pellets into heat. Innovative combustion technology ensures low emission levels that are similar to leading fossil fuel heating systems and meet the stringent regulations of the European Clean Air Act. Operating the Vitoligno 300-C is extremely easy and convenient – almost everything is automatic, from pellet feed right through to cleaning.

Flexible fuel supply

The Vitoligno 300-C comes equipped with a vacuum system for automatic pellet feed from the storage room. The boiler can also be quickly and easily converted from automatic to manual feed. Commercially available bags of wood pellets can be used for manual feed if there is insufficient space for a pellet storage room.

Compact dimensions

The Vitoligno 300-C pellet boiler allows for flexible and space-efficient placement as all components are directly accessible for service and maintenance. An ideal option is installation in a corner of the boiler room. Viessmann offers a complete range of accessories for pellet storage and extraction systems from a single source.

Convenient automatic functions

Wood pellets burn with few residues – and even these are taken care of automatically by the Vitoligno 300-C. For example, the finned grate in the combustion chamber is cleaned automatically at least once a day. This guarantees low losses and excellent fuel utilization. Automatic ash removal compresses the ash in the ash box and ensures that it has to be emptied no more than twice a year. Due to the sealed ash box, ash removal is also clean and hassle-free.

Intelligent Ecotronic control unit

Operating the Vitoligno 300-C is easy with the weather-compensated digital Ecotronic control unit. Up to four heating circuits with mixing valve can be controlled with the standard version. The boiler with pellet supply, the heating circuits and the DHW tank temperature can all be controlled intuitively. Adjusting all relevant parameters is made easy by the clear display with graphic capability and multi-line plain text support.

Prepared for solar

In combination with a solar thermal system, current solar data is also shown on the display. The collector and DHW temperature are part of this data, as are the operating hours of the solar thermal system.

Safe and clean burning

Viessmann wood pellet-fired boilers are as safe and reliable as leading gas/oil-fired heating systems. Equipped with advanced safety and fire protection devices and a digital control, the entire system is closely monitored – from the fuel feed right to the heat transfer and venting.

Modern wood heating systems, such as the Vitoligno 300-C, do not contribute to climate change as they are CO₂ neutral. In addition, Viessmann wood-fired boilers reach similar emission levels as leading fossil fuel-fired heating systems and meet the stringent regulations of the European Clean Air Act.

Advantages of the Vitoligno 300-C

Fully automatic pellet boiler with a heating input range of 44 to 193 MBH / 13 to 57 kW.
Low fuel consumption through high efficiency, modulating operation and weather-compensated control.
Extensive accessories for pellet supply and storage.
Flexible and space saving installation.
Automatic ash removal through a stainless finned grate ensures highly reliable operation and long cleaning intervals (ash bin requires emptying only once or twice a year).
Ecotronic control with plain text user prompts and remote control monitoring option.

Look inside the boiler

  1. Pellet hopper (with vacuum system only).
  2. Automatically cleaned heat exchanger.
  3. Rotary valve for 100% back-burn protection.
  4. Combustion chamber made of heat-resistant ceramic.
  5. Automatic ash removal with ash bin.
  6. Self-cleaning, rotating fuel grate made of stainless steel.

Product details


44 - 129 MBH  (13 - 38 kW) for VL3C-32
64 - 193  MBH  (19 - 57 kW) for VL3C-48


37.4 - 109.6  MBH  (11 - 32 kW) for VL3C-32
54.4 - 164  MBH  (16 - 48 kW) for VL3C-48


85% at full load and partial load

Max. operating pressure (at 230°F / 110°C)

45 psi (3 bar)

Power supply

240V, single phase, 60 Hz, 20 Amps

Total weight

1433 lbs (650 kg) for boiler with pellet hopper
1356 lbs (615 kg)  for boiler with  connection unit for flexible screw conveyor

Overall dimensions (boiler only)


48⅛ inches (1224 mm)


30⅛ inches (765 mm)


60⅝ inches (1538 mm)

Pellet hopper capacity

3.5  cubic ft. (101 L) with vacuum system

Volume of ash box

2.3 cubic ft. (65 L)

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