Boiler Viessmann Vitocrossal 300 CU3A Series Capacity 199,000 BTU

  • Rating
  • Capacity199000
  • AFUE95%
  • Fuel TypePropane, Natural Gas
  • Energy StarYes
  • CollectionVitocrossal 300
  • WarrantyUp to 10 years on parts
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Boiler Viessmann Vitocrossal 300 CU3A Series Capacity 199,000 BTU


Viessmann offers a comprehensive range of home comfort products that sets the standards for sustainability and efficiency. The Vitocrossal 300 is Viessmann’s top-of-the-line boiler for residential and light commercial applications. The Vitocrossal 300 is known for its high-temperature heating and water volume, all while maintaining an impressive 95% AFUE rating. Perfect for homes with multi-zone or high mass radiators, the Vitocrossal 300 features wide water passageways that allow for simplified piping with full system flow. An intelligent combustion control along with a user-friendly Vitotronic 200 control makes the Vitocrossal 300 a favourite among owners looking for power and efficiency.

The Viessmann Vitocrossal 300 features a unique heat exchanger that provides space for a large amount of water. This allows the boiler to efficiently serve high-demand space heating sources, such as high-temperature fin-tube and high mass radiators.

The Vitocrossal 300 includes an Inox-Crossal heat exchanger that offers ideal conditions for intensive utilization of hot gases. The vertical orientation of the heat exchanger allows condensate to run off downwards, creating a self-cleaning effect.

The Viessmann-made Vitotronic 200, KW6B control manages the entire heating system and ensures maximum performance and comfort at all times. This user-friendly control features a backlit display, multi-line text, and graphics for the hassle-free boiler control.

The Vitotronic 200 control includes an outdoor reset mode that can reduce fuel consumption by up to 15%. The outdoor reset adapts the boiler’s operating temperature to the changing outdoor temperature, allowing for excellent returns on an initial investment.

Equipped with the state-of-the-art Lambda Pro combustion management system, the Vitocrossal 300 adapts combustion to changing gas qualities and operating conditions to optimize performance and efficiency.


  • ModelVitocrossal 300
  • Boiler TypeGas
  • Depth31-1/2 in
  • Input MBH199 MBH
  • Energy StarYes
  • NSF CertifiedNo
  • Supply Pipe Connection1-1/4 in
  • ANSI SpecificationsANSI Z21.13
  • BTU199000
  • CSA CertifiedCSA 4.9, CSA B51, CSA C22.1
  • Energy Star CompliantYes
  • Height61-1/2 in
  • Length31-1/2 in
  • Power SourceGas
  • UL ListedNo
  • BTU Heat Rating185000 Btu/h
  • Fuel TypePropane, Natural Gas
  • Ignition SystemGas Fired
  • Maximum Pressure30 psig
  • Return Pipe Connection1-1/4 in
  • Width26 in
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Boiler Viessmann Vitocrossal 300 CU3A Series Capacity 199,000 BTU


*15-Year Limited Warranty on covered components

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