Vitocrossal 300, CA3 Update

May 2017

Now available in 2.5 Million BTU and 3.0 Million BTU.

Viessmann Manufacturing Company (U.S.) Inc. is proud to announce that two new sizes, 2.5 Million BTU and 3.0 Million BTU, have been added to the Vitocrossal 300, CA3 gas-fired boiler series. The CA3 is now available in six (6) sizes from 2.5 Million BTU to 6.0 Million BTU with inputs from 250 – 6,000 MBH and thermal efficiency of 96% on all models.

The Vitocrossal 300, CA3 is the ideal solution for commercial and industrial applications. With multiple venting options and seamless integration in building management systems, the CA3 comes fully assembled and is easy to install.

The Vitocrossal 300, CA3 combines unparalleled flexibility with maximum efficiency, making it a smart investment choice for a new installation or an economical retrofit in multi-family, commercial or light industrial applications. From buildingswith narrow entrances and small mechanical rooms, to high altitude applications up to 10,000 feet, the flexibility of installation built into the new Vitocrossal 300, CA3 makes it the best choice on the market today.

The CA3 is equipped with the SA240 316Ti stainless steel Inox-Lamellar heat exchanger surface which provides maximum heat extraction while maintaining a compact size; it features a maximum working pressure of 160 psi.  The smooth, corrosion-resistant surfaces on the heat exchanger allow condensate to simply run off; this is a “self-cleaning” process that ensures continuous condensing efficiency, reduced maintenance costs and longevity.  The large water content on the CA3 reduces wasteful burner cycling which increases system efficiency and overall durability.


The Viessmann-made Vitotronic 300, GW6C control manages the entire boiler room and ensures economic performance and maximum comfort at all times. For larger systems, Viessmann offers custom boiler controls for virtually unlimited capacities plus additional options such as real time system loading, VFD pump outputs, BTU metering and efficiency trending.  Viessmann’s Matrix Cylinder Burner features a turndown ratio of  up to 15:1 and precisely matches the load per boiler, providing a quiet and environmentally friendly operation.

The Vitocrossal 300, C3A is available through Viessmann Wholesale Partners across the US. For more information, visit www.viessmann-us.com.

About Viessmann Group

The Viessmann Group is one of the world's leading manufacturers of heating, cooling and renewable energy systems. Family-owned since 1917, the company has over 12,000 employees worldwide and has a turnover of approximately 2.2 billion Euro.

With 23 production companies in 12 countries, sales & distribution facilities in Germany and 74 other countries, and 120 sales offices around the world, Viessmann has a strong global presence. Exports account for 54% of the company’s sales.