Tengchang 10L 2.6 GPM LPG Gas Propane Instant Tankless Hot Water Heater Boiler Bath Gas Type: LPG Liquid Petroleum Gas (PROPANE) ; Working temperature:-8-45 Capacity:10L/min (2.6Gal), 25 degrees warm water producing rate Thermal input: 20KW ;Thermal efficiency: 80% ;Temperature rise: 25 Minimum working water pressure: 0.025MPa ;Gas pressure: 2800Pa ;Gas inlet: G2/1 Water Inlet: G1/2''-4' ; Water Outlet: 20.96MM 1''/14T ; Vent Type:4.2