... , 16L/min, 20L/min (25 centigrade temperature rising); Gas Source: LPG, NG, Town Gas Rated gas pressure: 2800 Pa (LPG), 2000 Pa ( NG ... 140mm Water pressure: 0.015 - 0.8 MPa Diameter of gas connector: LPG: 9.5mm, NG: 12-15mm Diameter of cold ... , easy operation; Model of Ignition Methods: Impulse Automatic Ignition; Gas Exhaust Type: Flue duct type; Summer & winter switch for choice; Over-heat protection ...