The proven Unimat 3-pass design has been used for decades – with overwhelming success. The UT-M is offered in various sizes and can also be used in a pooled-output multi-boiler system. It is CE certified and is designed and equipped in compliance with the European Pressure Equipment Directive.

The UT-M's exceptional performance is most evident in central heating systems for local and community heating. But this versatile hot water boiler is also used in a wide variety of commercial and industrial heating applications.

Type UT-M
Heat transfer medium High-pressure hot water
Design 3-pass single-flame tube/smoke tube technology
Capacity in kg/hour 750 to 19 200
Safety design overpressure (in bar) up to 16
Max temperature in °C up to 190
Fuel Oil, gas

  • Effective 3-pass design
  • Standard utilisation ratio without flue gas heat exchanger up to 95 % and up to 105 % with condensing heat exchanger
  • Effective thermal insulating materials with a high degree of efficiency
  • Approved for low return flow temperatures from 50 degree Celsius
  • Suitable for all burner systems
  • Pollutant reduced combustion thanks to the use of highly developed firing systems and careful matching of the best boiler and burner combination
  • Easy to maintain thanks to fully hinged boiler front door
  • Robust, reliable and unsurpassed in its durability 
  • No burner minimum load level limit for keeping dry on the flue gas side
  • Smoke tube passes free of flow components
  • High permissible temperature spread of up to 50 °C