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CWNS hot water boiler is a kind of horizontal type internal combustion three return boiler with wet back structure, the combustion chamber adopts lower-position arranged corrugated furnace,which can increase the radiation heating surface and enhance the boiler efficiency to maximum degree.Oil/gas fired boiler is equipped with superior performance burner,which can realize automatic combustion proportion adjustment, automatic feed water regulation, automatic program start-up and shut-down, in addition,it has automatic protection functions of high/low water level,ultra low water level, high pressure, automatic flameout,etc.

Production advantage:
• Three return structure and large volume combustion chamber design make sure the combustion more sufficient.
• Advanced corrugated furnace structure increases the heat transfer area and satisfies free expansion of the furnace after being heated.
• Large diameter corrugated furnace provides large combustion space,sufficient fuel combustion,effective absorption of heat and thermal expansion and large radiation heating surface.
• Adopt wet-back structure with butt weld,which provides high reliability and low maintenance costs.
• Explosion-proof door offers higher safety guarantee and easier observation of combustion status.
• Protective functions of over temperature, over pressure, water shortages, leak detection, flame out to ensure safe and reliable operation of boiler.
• Equipped with imported burner with superior self-control performance,which can achieve fully automatic operation.

| Model | Thermal rating(MW) | Pressure of work(Mpa) | The thermal efficiency(%) | Effluent/inlet temperature(℃) |
| CWNS0.7 | 0.7 | 0 | ≧98% | 85/60 |
| CWNS1.05 | 1.05 | 0 | ≧98% | 85/60 |
| CWNS1.4 | 1.4 | 0 | ≧98% | 85/60 |
| CWNS2.1 | 2.1 | 0 | ≧98% | 85/60 |
| CWNS2.8 | 2.8 | 0 | ≧98% | 85/60 |
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