Heating boiler UNIMAT UT-L

For low to high heat demand, boilers are available in the power range from 650 to 19,200 kW.

Heating boiler UNIMAT UT-L

The UNIMAT UT-L boiler is an ideal solution for district heating systems and is suitable for many areas of use.

The proven UNIMAT triple-path technology has proven itself thousands of times in practice. The UNIMAT boiler is available in various sizes and can be used for multiple boiler installations.


TypeUNIMAT UT-L
Transfert de chaleurEau chaude basse pression
ConstructionTechnologie à tube foyer et tube de fumée à triple parcours
Puissance650 à 19 200 kW
Limite de surpressionjusqu'à 16 bars
Température maxi.jusqu'à 120 °C
CombustibleFuel, gaz

The UT-L is mainly used in hospitals, nursing homes, commercial buildings, residential complexes and in all industries. Thanks to its high flexibility, the UT-L is ideal for use as a standby and peak load boiler in thermal power plants and cogeneration plants.

  • Efficient three-path construction
  • Standardized efficiency without exhaust heat exchanger up to 95%, with condensing heat exchanger up to 105
  • Effective insulation, high efficiency
  • Approved for low return temperatures from 50°C
  • Suitable for all burners
  • Low-emission combustion through the use of state-of-the-art combustion systems and careful selection of the best boiler/burner combination
  • Easy maintenance with a fully swinging front door
  • Robust, reliable and incomparably durable
  • No minimum burner load to keep the flue gas side dry
  • Space-saving routing of the flue pipe
  • Permissible high temperature difference of up to 50 K

The fire tube ends in a flooded gas inversion chamber which leads into the first flue gas circuit. Smoke circulation is free in both the first and second smoke circuits. The rounded design is very functional as it provides optimal pressure resistance. The firebox, water volumes, radiation and convection surfaces are optimally dimensioned and matched to each other.


The front door of the boiler is fully hinged, with a choice of right or left hinge. The entire boiler section is easily accessible. This makes maintenance, cleaning and inspection easy. The high-quality mineral wool insulation of the entire heating body and the special thermal insulation of the front door ensure low radiation losses. On request, the heat generator can be equipped with a flue gas heat exchanger or a condensation heat exchanger at the factory.

The UT-L boiler is offered with accessories in fully functional units. The high-quality equipment includes the boiler pressure vessel, the burner block, the flue gas heat exchanger or the condensing heat exchanger and the control and safety technology, which is already wired with the integrated connection box.

Base equipment 

Variable equipment according to the customer's wishes

Associated boiler room elements

  • Water conditioning module WTM
  • Flue gas heat exchanger ECO 1/7
  • Flue gas heat exchanger ECO 6 for individual installation
  • Flow/return connection SP/RP
  • Thermal return temperature protection RTS
  • Gas control module GRM
  • Oil circulation module OCM
  • Oil supply module OSM
  • System management system SCO