This compact boiler ensures optimum flow of flue gases thanks to an innovative combustion tube that has a wetback-reversing chamber, in addition to first and second flue ways. Furthermore, the offset furnace design of the UL-S optimises pressure resistance to perfectly match the water volume against internal heat transfer surfaces, ensuring even heat transfer.

Rapid water circulation within the UL-S allows dry steam to be produced quickly and efficiently, while the large water chamber offers sufficient storage to accommodate sudden peaks in demand.

CFB Boilers has decades of experience in the design, installation, commissioning and maintenance of the UL-S Series, which is manufactured to the highest standards in Germany.

Why it’s class-leading

• 3-pass wet back design
• Compact, horizontal shell
• Flexible output for fluctuating demand
• Natural gas, propane, oil and dual fuel
• Low NOx emissions
• Design pressure up to 30 bar