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fuel oil boiler 1
fuel oil boiler 2
fuel oil boiler 3
fuel oil boiler 4

Oil Fired Boiler

Diesel powered boiler | Heavy oil fired boiler | Waste oil boiler

Fuel oil fired boiler is the 3-pass wet back boiler, can produce steam or hot water. This type boilers are fully automatic, safe, energy saving and designed to operate on a wide range of liquid and gaseous fuels like heavy oil, light oil, gas, and dual fuel options.

Model: WNS
Capacity Range: 0.2 to 40 Ton/h, 120 to 14,000 KW
Output: saturated steam, hot water
Style: 3-pass shell tube boiler
Applied Industry: food&beverage, dairy, feed, textile, paper, chemical, package, refinery, pharm, building material, hotel etc


  • Yuanda Boiler industrial diesel/heavy oil boiler is a packaged shell tube boiler, both horizontal oil fired boiler and vertical oil fired boiler, equipped with oil burner, and other full set of boiler accessories. It can generating high temeperature steam or hot water for factory use.

  • Application: Factory Steam Process, Hot Water Process, Heating, Drying, Sterilization, Distillation, Ripening, Extraction, Crystallization, Granulation, Swelling, Dehairing Etc

  • High efficiency and long lifetime. WNS gas/oil boiler is the packaged quick fitting boiler, has features of three-pass gas flue, larger corrugated furnace and "patented thread pipe", water back protection with reversal chamber, 12CM double-layer thermal insulation. All make boilers superior

  • Easy installation & operating. Experienced engineers, files, video support, boiler system could be well-debugged.

  • It equipped with famous burner & valve groups, and independently developed high-matching PLC control system to realize muitiple linkages. Over pressure, over temperature, low water level, air ignition alarmming and interlock, high degree automation boiler

    • wns diesel oil fired boiler

    • VERTICAL DIESEL BOILER Yuanda Boiler also have LHS model vertical oil fuel boiler for limited space factory, we recommend the vertical boiler if clients do not have enough space.

    • Yuanda Boiler provides clients with the support and expertise necessary to design, fabricate and install complete gas/oil boiler systems, from the fuel, water, boiler, and other accessories. Various gas/oil fuel boiler designs are suitable for applications to produce steam or hot water in ranges from 500 to 40,000 kg/hr output under 50 to 500 PSI.

    • LHS vertical diesel boiler



Spirally Corrugated Furnace & Wet Back Structure

1. Bigger corrugated furnace design, increased 10% heating area and avoid damaged by heat expansion; 2. Wet back stucture reduce the back tube sheet temperature and protect it from cracking


3-Pass Spiral Fire Tubes (smoke tube) Technology

Use the advanced technology which is our patent to design the spiral tubes, to enhance the boiler thermal power 10-15% higher than normal, and avoid the spiral tube from ash deposition and wearing


Double Layer 12cm Aluminum Silicate Insulation

We use double layer 12cm aluminum silicate insulation cotton, boiler surface temperature is not higher than 40 ℃, energy saving and high efficiency


Economizer/Condensor Design, Energy Saving

Recycle exhausted smoke to heat feed water, reduce exhaust smoke temperature below 95 ℃, increase feed water temp then save fuel cost at least 6% per hour



From boiler solution, optimization to installation, 24 hours online, provide technical support and avoid risks for you


Based on user needs, we supply tailored service, boiler drawing&PID system, boiler room design, foundation drawings etc


Full-life After sale service. With our professional technical experts and service team, skilled technology provides customers with professional services


Our engineer on-site guidance installation and commissioning, ensure boiler running perfect, free training for boiler operator


According to the customer production requirements, provide professional boiler solutions, cost analysis, project investment budget, boiler drawing&installation and commissioning service


oil steam boiler
oil hot water boiler
Model Rated steam output
Rated pressure
Rated steam temperature
Feed water temperature
Fuel consumption
Light diesel oil(kg/h) Natural gas(Nm3/h)
WNS 0.5 0.5 0.4~2.5 mpa 130~226 20/105 32.5 35.7
WNS 1 1 0.4~2.5 mpa 130~226 20/105 64.6 70.1
WNS 1.5 1.5 0.4~2.5 mpa 130~226 20/105 96.8 105.2
WNS 2 2 0.4~2.5 mpa 130~226 20/105 129.3 140.3
WNS 3 3 0.4~2.5 mpa 130~226 20/105 192.9 212.1
WNS 4 4 0.4~2.5 mpa 130~226 20/105 258.2 283.4
WNS 5 5 0.4~2.5 mpa 130~226 20/105 323.5 354.7
WNS 6 6 0.4~2.5 mpa 130~226 20/105 388.6 424.2
WNS 8 8 0.4~2.5 mpa 130~226 20/105 514.6 566.3
WNS 10 10 0.4~2.5 mpa 130~226 20/105 641.7 707.8
WNS 12 12 0.4~2.5 mpa 130~226 20/105 768.9 849.3
WNS 15 15 0.4~2.5 mpa 130~226 20/105 960.1 1061.7
WNS 20 20 0.4~2.5 mpa 130~226 20/105 1276.2 1415.8
Note: Standard boiler parameter is for your reference, should follow the actual technical data according customer needs & engineer design.
Model Rated thermal power
Rated working pressure
Rated output water temperature
Rated return water temperature
Fuel consumption
Light diesel oil(kg/h) Natural gas(Nm3/h)
WNS 0.35-0.7/1.0/1.25/1.6-YQ 0.35 0.7/1.0/1.25/1.6 95/115/130 70 31.6 36.6
WNS 0.7-0.7/1.0/1.25/1.6-YQ 0.7 0.7/1.0/1.25/1.6 95/115/130 70 60.4 69.3
WNS 1.4-0.7/1.0/1.25/1.6-YQ 1.4 0.7/1.0/1.25/1.6 95/115/130 70 122.8 146.1
WNS 2.1-0.7/1.0/1.25/1.6-YQ 2.1 0.7/1.0/1.25/1.6 95/115/130 70 192.3 227.1
WNS 2.8-0.7/1.0/1.25/1.6-YQ 2.8 0.7/1.0/1.25/1.6 95/115/130 70 246.1 286.5
WNS 4.2-0.7/1.0/1.25/1.6-YQ 4.2 0.7/1.0/1.25/1.6 95/115/130 70 367.1 412.6
WNS 5.6-0.7/1.0/1.25/1.6-YQ 5.6 0.7/1.0/1.25/1.6 95/115/130 70 490.2 543.7
WNS 7.0-0.7/1.0/1.25/1.6-YQ 7.0  0.7/1.0/1.25/1.6 95/115/130 70 593.6 660.7
WNS 10.5-0.7/1.0/1.25/1.6-YQ 10.5 0.7/1.0/1.25/1.6 95/115/130 70 936.5 998.8
WNS 14-0.7/1.0/1.25/1.6-YQ 14 0.7/1.0/1.25/1.6 95/115/130 70 1200.8 1330.7
Note: Standard boiler parameter is for your reference, should follow the actual technical data according customer needs & engineer design.

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