Unimat Hot Water Boiler UT-M
Unimat Hot Water Boiler UT-M
Unimat Hot Water Boiler UT-M
Hot water boilers

Unimat Hot Water Boiler UT-M

The UT-M boiler type is a further development of the successful UT boiler construction. It is used in areas where medium to high temperatures are required.

At a glance
  • Three-pass boiler for a medium to high heat demand of 750 to 19,200 kW at up to 16 bar
  • Standard efficiency without flue gas heat exchanger up to 93% and up to 105% with condensing heat exchanger
  • Approved for low return flow temperatures from 50 °C and temperature spread up to 50 K
  • Versatile design for use with different fuel types and as a multi-fuel firing unit (oil, gas, biogas, hydrogen)
  • Smoke tube passes free of disruptive flow components
  • No minimum burner load level for water removal on the flue gas side
  • Our 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.
  • The continuous flame tube ends in an inner water-flushed flue gas reversing chamber, which leads into the first smoke tube. Both the first and second smoke tubes are free from flow fittings. The highly functional round design ensures optimal pressure resilience. Furnace, water chamber volume and radiant and convective heating surfaces are perfectly dimensioned and matched to one another.
  • The boiler front door is fully hinged, with hinges on the right or left as desired. The entire cross section of the boiler is freely accessible. This makes maintenance, cleaning and inspection simple. The high quality mineral wool matting insulation covering the entire boiler body and the special thermally insulating materials in the front door keep radiant heat loss at negligible levels. If desired the heat source can be supplied ex works with an integrated flue gas or condensing heat exchanger.
  • Certification according to the European Pressure Equipment Directive means that high operating and safety temperature levels of up to 190 °C are possible.
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The UT-M hot water boiler is supplied as a fully operational unit including equipment. This high-quality equipment includes the boiler pressure vessel, burner unit, flue gas or condensing heat exchanger, and the control and safety technology, which comes ready-connected to the integrated terminal box.

A variety of equipment options to suit customer requirements

Technical data
Heat transfer medium
Safety pressure
Max. temperature
Data sheets
High-pressure hot water
Three-pass single-flame tube/smoke tube technology
750 to 19.200 kW
up to 16 bar
up to 190 °C
Gas, oil, bio gas, bio oil, hydrogen
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