Aix Boiler oil & gas fired hot water boiler operates based on the principle of internal combustion three-pass wet-back combustion and heat exchange. Fuel (natural gas, LPG, diesel, methanol, etc.) is atomized by the Burner and fully burned in the corrugated furnace, releasing a large amount of heat. High-temperature flue gas undergoes furnace radiation heat transfer, threaded smoke tube convection heat transfer, and third-pass enhanced heat exchange in turn. The tail energy-saving condenser recovers latent heat and sensible heat from flue gas to continuously heat boiler water to the set temperature (adjustable 40℃—95℃). The circulating pump delivers hot water to the heating or hot water system for continuous constant-temperature heating. The boiler is designed and manufactured in strict accordance with TSG 11-2020 Boiler Safety Technology Regulation and GB/T 1921-2025 Specification for Industrial Boilers, with thermal efficiency up to 95%—99%, low nitrogen emission, safe, reliable and fully automatic. As a core commercial and industrial hot water equipment of Aix Boiler brand, this product is under full-chain control of independent R&D, production and quality inspection by the original factory. Adopting horizontal fast-assembly structure, intelligent control system and low-nitrogen combustion technology, it is specially designed for central heating and domestic hot water projects such as residential quarters, hotels, schools, hospitals, industrial parks and commercial complexes. It can fully replace traditional coal-fired hot water boilers, helping users achieve environmental protection compliance, stable heating and energy saving.

1. Core Product Parameters (Aix WNS Oil & Gas Fired Hot Water Boiler)

2. Working Principle & Technical Core

Aix WNS oil & gas fired hot water boiler adopts horizontal internal combustion three-pass full wet-back structure, composed of furnace body, burner, smoke tubes, combustion chamber, energy-saving condenser, fully automatic control system and safety accessories. It is a high-efficiency shell-type fast-assembly boiler equipment.During operation, fuel is atomized by the burner and sprayed into the corrugated furnace for stable combustion under slight positive pressure. High-temperature flue gas heats boiler water by radiation (1st pass). Flue gas enters the combustion chamber and turns into threaded smoke tubes to greatly improve convection heat exchange efficiency (2nd pass). Then it enters the 3rd pass plain tubes for further heat exchange. Finally, the energy-saving condenser deeply recovers waste heat, significantly reducing exhaust temperature and improving thermal efficiency.Equipped with PLC/Siemens intelligent control system, the boiler realizes automatic ignition, automatic proportional combustion adjustment, automatic constant temperature, automatic circulating pump control, automatic alarm and shutdown protection. It can intelligently adjust combustion intensity and heating rhythm according to water temperature and load, truly unattended and stable operation. Meanwhile, full wet-back combustion chamber structure is adopted, with rear tube plate fully immersed in water to avoid high-temperature dry burning and deformation, greatly improving service life and operation safety.

3. Core Features & Original Factory Advantages

1. Ultra-high Thermal Efficiency, Lower Operating CostAdopt three-pass enhanced heat transfer + threaded smoke tubes + energy-saving condenser design to fully absorb flue gas heat, with thermal efficiency up to 95%—99%, 15%—25% more energy-saving than conventional boilers, significantly reducing fuel cost for long-term use, in line with the high-efficiency and energy-saving direction advocated by <a href="https://www.chinaboiler.org.cn" target="_blank">China Boiler and Boiler Water Treatment Association</a>.

2. Low-nitrogen & Environmental, Easy EIA ApprovalEquipped with low-nitrogen burner and flue gas recirculation technology, NOx emission ≤30mg/Nm³, no black smoke, no dust, low noise, fully meet the strictest environmental standards. No desulfurization, denitrification and dust removal facilities required, enterprises pass EIA and acceptance smoothly.

3. Fully Automatic Intelligent Operation, Hassle-freeOne-key start, automatic ignition, automatic constant temperature, automatic water supply, automatic flameout protection, fault self-test and alarm, support remote monitoring and multi-period timing operation. Circulating pump and combustion system intelligently linked, no special personnel on duty, greatly saving labor cost.

4. Complete Safety Protections, More Reliable OperationFull-dimensional safety devices including over-temperature protection, water shortage protection, flameout protection, overpressure protection, leakage protection, anti-freeze protection, explosion-proof protection. Safety valve, pressure gauge, thermometer configured in strict accordance with national standards, safe operation guaranteed.

5. Compact Structure, Quick & Easy InstallationHorizontal fast-assembly factory-out, furnace body, burner, control and pipeline pre-assembled. Only water pipe, fuel and power connection needed on site, small footprint, no complex infrastructure, suitable for new projects and old boiler renovation.

6. Fast Heating, Stable & Uniform HeatingLarge furnace design and enhanced heat exchange structure, reach set temperature in 10—15 minutes, fast heating speed, wide load adjustment range, stably cope with heating and hot water load fluctuation, ensure constant and comfortable end temperature.

7. Original Factory Strength GuaranteeAix Boiler independent R&D and production, Class A manufacturing technology, no middleman price difference, transparent price, stable supply. Provide full-range customization of power, pressure, fuel type, low-nitrogen, condenser, lifelong technical support and fast after-sales response.

4. Manufacturing Process & Quality Compliance

AIX oil-gas fired hot water boilers adhere to standardized lean manufacturing in our source factory, strictly implementing national industrial boiler standards and special equipment safety regulations.

The boiler body adopts high-quality steel plates sp