... heating boiler has its own advantagesThis item OBL-B330 with 4 time setting, clear&readable LCD screen, and ... tank the Main circuit board can cut down the electric power instantly,without any delay. 5) Pressure release ... bear 4.0MPa pressure. 8) 3 kinds of Electric power 4.0 kw,6.0 kw,8.0 ... mm2 power line. The inner scheme of Electric heating boiler wall mounted Electric Fireplaces with Anit-dry burn