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WNS Series Automatic Hot Water Boiler China Factory and Suppliers

Looking for reliable China suppliers? Our WNS series boiler factory provides high-efficiency heating solutions featuring a low-level combustion chamber design to reserve large water level safety space and minimize risk of water shortage accidents.



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The Gas and Oil Fired WNS Series Automatic Hot Water Boiler represents the pinnacle of industrial heating efficiency, engineered with a sophisticated horizontal wet-back and three-backhaul structure. This advanced design ensures a compact footprint and an optimized layout, making it an ideal solution for facilities with limited boiler room space without compromising on thermal performance.

Integrating high-performance components such as corrugated furnaces and spirally corrugated tubes, the WNS series significantly enhances turbulent heat transfer and effectively manages thermal expansion. Combined with a low-level combustion chamber for maximum water level safety and world-renowned burner brands, this boiler delivers unparalleled reliability, safety, and high energy efficiency for diverse industrial applications.

Detailed Parameters

Rated Pressure1.0 MpaOutlet Water Temp95/115 ℃
Inlet Water Temp70 ℃Efficiency Range92.4% - 93.2%
Capacity Range0.7MW - 14MWHeating Surface25.6㎡ - 426㎡
Fuel OptionsNatural Gas / Diesel OilStructure TypeHorizontal Wet-back
Weight Range4.5t - 41tCombustion TechAutomatic Burner

Key Advantages

Enhanced Safety

Low-level combustion chamber design reserves ample water level safety space to minimize risks of water shortage accidents.

Space Optimized

Finned tube economizer arrangement allows for a compact shape, perfectly suited for smaller industrial boiler rooms.

High Efficiency

Premium fire-proof and insulation materials lower surface temperatures and significantly boost overall thermal efficiency.

Advanced Heat Transfer

Corrugated furnace and spiral tubes intensify turbulent heat transfer and relieve thermal expansion stresses.

World-Class Components

Equipped with international famous brand burners to ensure the highest standards of quality, stability, and safety.

Automatic Operation

Fully automatic control systems reduce manual intervention and ensure consistent water temperature output.

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Management Platforms

Fuel Management

Dual-fuel flexibility allowing seamless switching between gas and diesel based on cost and availability.

Thermal Control

Precision modulation of the combustion process to maintain optimal outlet temperatures (95/115℃).

Safety Monitoring

Real-time monitoring of water levels and pressure to prevent overheating or dry-firing accidents.

Efficiency Tracking

Automated tracking of gas/diesel consumption against heat output for operational cost analysis.

Layout Optimization

Compact dimensions managed for rapid installation and minimal site preparation.

Maintenance Alerts

Scheduled maintenance prompts based on burner run-time and heat surface scaling cycles.

Investment Return Comparison

FeatureStandard BoilerWNS Series Boiler
Thermal Efficiency85% - 88%92.4% - 93.2%
Space RequirementLarge footprintCompact/Optimized
Safety RiskMedium (Standard)Low (Low-level Chamber)
Heat TransferLinear TubesCorrugated/Spiral Tubes
Fuel VersatilitySingle FuelGas/Diesel Dual Option

Frequently Asked Questions

Q: What are the main benefits of the wet-back design in WNS boilers?

The wet-back design reduces the need for refractory materials in the rear chamber, lowering maintenance costs and improving overall heat transfer efficiency by keeping the heating surfaces submerged in water.

Q: How does the corrugated tube design improve performance?

Corrugated tubes create turbulent flow in the flue gas, which significantly increases the heat transfer coefficient compared to smooth tubes, while also allowing for better thermal expansion without stressing the boiler structure.

Q: Can this boiler run on both gas and diesel?

Yes, the WNS series is designed for versatility. Depending on the burner configuration, it can be operated as a gas-fired or diesel-fired boiler, providing operational flexibility based on local fuel pricing.

Q: What safety measures are in place to prevent water shortage?

We employ a low-level combustion chamber design which creates a larger water level safety buffer, reducing the risk of accidents caused by sudden water loss or sensor failure.

Q: How does the finned tube economizer contribute to efficiency?

The economizer recovers waste heat from the flue gases to preheat the incoming feed water, which significantly lowers fuel consumption and increases the overall boiler efficiency.

Q: What is the typical lifespan of a WNS series boiler?

With proper water treatment and regular maintenance of the international-brand burners, these boilers are engineered for long-term industrial durability, typically lasting several decades.

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