high quality s/s housing, instant heating. all copper pipe with different capacity options tankless, energy ... min (25 centigrade temperature rising); Gas Source: LPG, NG, Town Gas Rated gas pressure: 2800 Pa (LPG), 2000 Pa ( NG), 1000 Pa (Town gas); Ignition way: Automatic impulse ... .015 - 0.8 MPa Diameter of gas connector: LPG: 9.5mm, NG: 12-15mm Diameter of cold water connector: G1/2" Diameter of hot ...