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Vitomax HS

High pressure steam boiler

The Vitomax HS is a high pressure steam boilers in the output range from 0.5 to 31.5 t/h.

Output range: 0.5 to 31.5 t/h
High efficiency over 95.5 %
H2 ready 100 %
Wide range of fuel options

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High pressure steam boiler

Output range: 0.5 to 31.5 t/h

High efficiency

With over 95.5 %

H2 ready

Operation with up to 100 % hydrogen

Wide range of fuel options

Such as hydrogen, natural gas, fuel oil, heavy fuel oil, biogases, bio-oils and many more

Precisely sized steam chamber

With low load (no water entrainment)

Pressure levels

0.5 to 30 bar

Integral steam drier

For high steam quality

Corner stays arranged in pairs

Reduces stress in the boiler

Optimum flame tube geometries

For clean combustion

Longest possible inspection intervals and easy servicing

Due to sufficient inspection and access ports

For use in the manufacturing industry

Can be used in a wide range of industries

Vitomax HS:  A compact and efficient steam boiler

Due to their design and equipment level, Vitomax industrial/commercial steam boilers deliver the best possible conditions for meeting individual customer requirements in a broad range of applications. The detailed design of the Vitomax boilers and the company's vast experience in building industrial boilers ensure superior quality, high operational reliability and a long service life.

The comprehensive Vitomax product range from Viessmann includes steam boilers with a continuous steam output of up to 31.5 t/h with an operating pressure of 6 to 25 bar.

Our versatile Vitomax high pressure steam boilers are designed to fully meet the needs of large industrial concerns.

The benefits at a glance:

  • Energy-saving thermal insulation
  • Large steam chamber with low load
  • High efficiency of up to 95.5 percent
  • Water-cooled burner entry point at the front and water-cooled rear reversing chamber
  • Low-stress design

Product features

The boiler provides a continuous supply of steam at an output of 0.5 to 31.5 t/h whilst its operating pressure extends from 6 to 25 bar.

The lateral arrangement of the flame tube results in a highly compact boiler design that meets all the requirements for efficient steam generation.

The Vitomax HS high pressure steam boilers is the ideal solution for large industrial concerns, such as those involved in food processing, fertilizers, construction material, paper, beverage, chemical and pharmaceuticals, as well as hospitals and refineries.

No concrete is used for the optional innovative burner entry point in Vitomax  boilers. This means it is water-cooled, and wear and maintenance-free, eliminating the need for replacement during the service life of the boiler. The water cooling guarantees a constant temperature at the burner head –– the otherwise usual reflection from a refractory lining (which causes thermal NOx to form) does not occur.

The burner entry point and the rear flue gas reversing chamber of the Vitomax  HS are water-cooled. Therefore the energy in the flue gases is used exclusively for steam generation.

All Vitomax  HS high pressure steam boilers are suitable for the combustion of up to 100  % hydrogen, subject to compliance with our conditions for the use of H2.

The spacing between the individual smoke tubes, as well as from the smoke tubes to the boiler casing and to the flame tube, comply with statutory requirements. The shearing force on the end face floors caused by different linear expansion in the smoke tubes and the flame tube is therefore extremely low. This design guarantees a long service life for the Vitomax  HS.

To make it particularly easy to service and maintain, just like all other Vitomax  boilers, the Vitomax  HS is equipped with sufficient inspection and access ports for carrying out important checks inside the boiler. As a result, Vitomax  high pressure steam boilers achieve the longest possible inspection intervals. Easy to open boiler doors and a cleaning door at the end of the boiler also ensure that maintenance is simple and contribute to low running costs.

  • Hydrogen up to 100  %: comparable NOx values as in fuel oil/natural gas
  • Fuel oil (EL), NOx emissions (< 150  mg/m3 flue gas possible)
  • Heavy fuel oil, Mazut 100
  • Natural gas, NOx emissions (< 70  mg/m3 flue gas possible)
  • And many others, e.g. biogases/bio-oils or animal fats
  • Food processing industry
  • Fertiliser industry
  • Building material industry
  • Paper industry
  • Beverage industry
  • Chemical industry
  • Pharmaceutical industry
  • Hospitals
  • Refineries

Product cross-section*

The product cross-section is only an example of what the  Vitomax HS high pressure steam boiler may look like. Deviations are possible depending on the individual order.

Modularity –– equipment level variations

  1. Burner entry point:  
    a)  Lined (standard)
    b)  Water-cooled –– maintenance-free/wear-resistant (option)
  2. Boiler cover:  
    a)  Without boiler cover / round insulation (standard)
      b)  Walk-on boiler cover prepared for platform mounting (option)
  3. Modular operating platform (option –– only in conjunction with walk-on boiler cover)
  4. Boiler support:  
    a)  Cross plates (standard < 14t boiler weight)  
    b)  Cross plates with longitudinal I-beams (option < 14t boiler weight / standard > 14t boiler weight  
    c)  Full I-beam version (option)
  5. Flue gas collector with outlet to the rear: Round version (standard)
  6.   Integral heat exchanger and flue gas collector:  
    a) Integrated heat exchanger with flue gas collector and outlet to the rear (option)  
    b) Integral heat exchanger with flue gas collector and outlet to the top (option)  
    c) Flue gas collectors with outlet to the left or right are also an option
  7. Front reversing chamber with superheater module (option)
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