• Vertical structure, small occuping area to help flow and air discharge of heat transfer oil in the boiler tube and heat transfer oil couldn’t easily coked.

• The position between the burner joint and the coil is sealed with good seal, large flexible space, to increase the service life of burner and enhance the heating efficiency.

• Triple coil structure is adopted by the boiler with three-pass flue gas, compact design and space-saving. Heating efficiency of the air pre-heater enhance up to 92% or more.

• Multiple running with safety protection make boiler’s operation more safety and simply. High temperature control precision (± l'C) and good combustion effect.

• Automatic control functions, to extend the service life of equipment while saving human resources.