The FB-S is a traditional three-step fire tube boiler with a wet back. The first step flows through the oven from front to back. The oven is corrugated to maximize efficiency while minimizing thermal stress. The flue gases are then moved from the combustion furnace to the front chamber forming the second passage.

For the third step gases flow through the tubes to the back of the boiler stack and exit through the exhaust outlet, conveniently located at the back of the boiler. The second and third passes travel through seamless heavy-duty tubes.

Representaciones Técnicas Lanuza S.A. • Km. 11.5 Carretera a Masaya, Complejo OFINOVA, Ofibodegas 7 y 8 • 
PO Box No. 3621 • Managua, Nicaragua • Phone: (505) 2278-4415 • ventas@retecsa.com.ni

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