Vitocrossal 300 CI3
Vitocrossal 300 gas condensing boiler, type CI3

Source: Viessmann.es
High efficiency gas condensing boiler

The new Vitocrossal 300 type CI3 gas condensing boiler is a highly efficient solution for apartment blocks, commercial properties and local authorities. The range has powers from 81 to 639 kW and a cascade function with integrated control for up to 8 equipment and a power of 5,112 kW in the smallest spaces make the Vitocrossal 300, type CI3 particularly flexible. With an installation width of only 75 cm, the boiler is recommended for renovations in small spaces, thanks to its small space of only 0.75-1.07 m² (81-639 kW). Standard maintenance is done on the front end.
You will find detailed information about the Vitocrossal 300 CI3 clearly summarized in the brochure and by visiting the Viessmann website. All price information for your calculation can consult our area sales.
The gas condensing boiler is supplied as a factory tested unit. Integrated wheels and a handy ramp allow quick installation without lifting tools. The Inox-Crossal heat exchanger made of high quality stainless steel, of proven effectiveness, guarantees high density with maximum reliability.


Highly efficient, with low emissions and ready for the future
The cylindrical MatriX burner developed by Viessmann offers low emission combustion with a modulation range of up to 1:10. The self-calibrating O2 sensor, which automatically adjusts the MatriX burner to different gas types.
Viessmann OneBase with web monitoring. The new Vitocrossal 300 CI3 is integrated into the Viessmann One Base platform. The gas condensing boiler can be put into service in a particularly simple and intuitive way via mobile ViGuide. The help function displays all the instructions in the text. This also allows monitoring with ViGuide, which offers the professional direct access to the heating system via a smartphone or tablet. In this way, the parameters can be easily optimized and the next maintenance tasks are informed in time.
Product characteristics
- Power range: from 81 to 639 kW
- Cascade connection up to 5,112 kW (8 units)
- Standard efficiency: up to 97.7% (Hs)
- Modulating MatriX cylinder burner with modulation range up to 1:10, 20% H2-ready
- Maximum service pressure: 6 bar

Advantages for professionals
- Ease of integrated installation that facilitates assembly
- Compact dimensions
- All components accessible from front and back
- Possibility of cascade operation with up to 8 teams
- Fuel change and height adjustment at the push of a button
- Viessmann One Base platform for control through the ViGuide app and for the use of digital services
- It uses CAN bus communication between the boilers and the gateway
- Gateway without complex wiring
Advantages for the user
- Efficiency of up to 97.7%, the highest in the class
- Low pollutant emissions and lower energy costs
- Efficient combustion control with self-calibrated O2 sensor
- Inox-Crossal stainless steel heat exchanger for high operational reliability and long service life
- Prolonged and uninterrupted operation with modulation
- 1:10 MatriX cylindrical burner
- Ready for the future at 20% H2-ready