1. No use of flue gas external circulation technology, no need to connect the external flue gas circulation pipeline, easy installation; it solves the corrosion effect of flue gas condensate on the burner and combustion safety problems, greatly prolongs the life of the boiler, improves economic benefits, is a revolutionary innovation of combustion technology;

2. No use of flue gas external circulation, high temperature flue gas stays in the furnace for a long time, which is beneficial to radiation heat release, good energy saving benefits, and reduce power consumption;

3. When the flue gas partial recirculation is used without multiple boilers sharing the flue, the interference problem of exhaust smoke from other boilers is interfered with, and the combustion stability is good;

4. The burner adopts an electronic proportional regulation system to adjust the air/gas ratio, and the adjustment ratio is 1:6. Two actuators are used to control the regulating air valve and gas valve respectively to achieve infinite adjustment and complete combustion of gas.