CWNS Series of Oil/Gas-fired Normal-pressure Hot-water Boilers

Structural Features

• The CWNS series of oil/gas fired normal-pressure hot-water boilers adopt a horizontal, three-pass and fire-tube structure, mainly being composed of a shell, a furnace, a reversing chamber and fire tubes, etc.
• This series adopts a wet-back and three-pass structure, enabling the heating surfaces to be symmetrically arranged so that the expansion of the boiler and the stress borne by the boiler can be reasonable.  
• The second and third passes adopt spirally-corrugated tubes. The reasonable arrangement of the heating surfaces ensures a good water circulation and heat exchange, achieving an ideal heat-transfer effect while greatly improving the heat efficiency of the boilers.
• The combustion chamber adopts a corrugated furnace, effectively reducing the thermal stress of the boiler, significantly improving the safety of the boiler, and greatly improving the functional life of the boiler.
• An expansion tank is arranged at the top of the boiler, and the water level can be controlled automatically. The boiler operates without pressure, achieving a safe and reliable operation so that the tedious procedures of authorization can be greatly simplified.
• This series adopts a globally-famous brand low-NOx burner and an advanced fully-automatic control system, achieving a stable combustion and a convenient, reliable and safe operation of the boiler. The installation period is short so that the boiler can be immediately put into use once the valves & instruments, the water source, the power supply, the fuel pipeline and the discharge pipeline are communicated on the site.