Articles: gas-fired vacuum hot water boilers Function: Heating water or hot water supply; Hot water for swimming pool; Heating water for industry Capacity: 100,000kcal/h-6, 000,000kcal/h Applicable fuel: light or heavy oil Natural or city coal gas Electricity Quality: ISO9001: 2000 Advantage: Smart appearance, 92.7%high efficiency Safty100%, Energy-saving10% Fully automatically controller Environmental protection