DW series of DC-type gas hot water boiler, power, reasonable structure design, suitable for medium and large regional areas needs central heating and hot water; unique double-finned tube heat exchangers all copper, since the baffle type flue design, and ensure the best heat transfer effect; stainless steel burners, to effectively prevent corrosion; quiet combustion systems, high pressure capacity to adapt to a more extensive installation sites; all copper pipe-style back, easy cleaning and maintenance, ensuring a more sustainable life; temperature adjustable temperature control and high-temperature limit, to ensure the safe operation of automatic hot water boiler.