(a) Quick installation: the furnace body, air preheater, gas burner, PLC control system, circulating pump, expansion tank, filter, oil and gas separator, etc. are assembled as a whole, and the gas, electricity, heat transfer oil can be imported and exported;
(b) Labor saving: PLC control, one-key operation, unattended, no need for a special stoker;
(c) Double coil furnace body: fast flow rate, sufficient output, low resistance, and low heat loss;