... : 10KW, 12KW, 14KW, 16KW, 18KW, 20KW, 24KW, 32KW, 40KW. Rated hot water output: 5 L/min, 6 L/min, 7 L/min ... accident. Water over high pressure protection device; Over freezing protection device; Super low water pressure starting design Gas Water Heater, Instant Tankless Water Heater, Natural Gas Water Heater