... , 32KW, 40KW. Rated hot water output: 5 L/min, 6 L/min, 7 L/min, 8 L/min, 9 L/min, 10 L/min, 12L/min, 16L ... device to avoid 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