Fire Tube Hot water boilers

The UT-L heating 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.

Basic equipment

A variety of equipment options to suit customer requirements

Associated boiler house components:

• WTM water treatment module
• ECO 1/7 flue gas heat exchanger
• ECO 6 flue gas heat exchanger for utilisation of condensing technology
• SP/RP supply/return flow adapter piece
• RTS return flow temperature safeguard
• GRM gas regulation module
• OCM oil circulation module
• OSM oil supply module
• SCO system control

• Efficient 3-pass design
• Standard efficiency 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 °C
• Suitable for all burner systems
• Pollutant reduced combustion thanks to the use of highly developed firing systems and careful selection of the best boiler and burner combination
• Easy maintenance thanks to fully hinged boiler front door
• Robust, reliable and unsurpassed in its durability
• No minimum burner load level for water removal on the flue gas side
• Smoke tube passes free of flow components
• High permissible temperature spread of up to 50 K

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 easy. 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.

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 easy. 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.