Automatic WNS boiler is a kind of horizontal, three-pass, wet back, fire tube  boiler. Wet back means the back of furnace is surrounded by water, then the temperature of tube plate will be much lower.  Normally the rated capacity of WNS series boiler is less than  or equal to 20tons and  rating pressure is less than 2.5MPa. It is 0.5-20ton gas/oil(Natural gas,LPG,CNG,LNG,Diesel,heavy oil)fired hot water boiler.

Capacity:0.5-20ton/h

Pressure:1.0Mpa,1.25Mpa,1.6Mpa,2.5Mpa

Fuel:Natural gas,LPG,CNG,LNG,Diesel,heavy oil

Structure:Horizontal three pass wet back fire tube

II.Advantages

1. Adopting the latest technology, it is designed with a combustion chamber with large volume. It is equipped with a world-known burner, making the combustion more sufficient and ensuring higher efficiency and lower failure rate.

2. It adopts advanced corrugated furnace pipe structure, increasing the heat surface area, and satisfying free expansion of the furnace pipe after heating.

3. It uses a spirally corrugated tube, strengthening heat transfer and eliminating welding stress.

4. It adopts wet back structure with high reliability and low maintenance cost.

5. It has protective functions of overtemperature, overpressure, water shortage, leakage detection and flameout, ensuring safe and reliable operation.

Function:Burner automaticallly ignite, flameout and switch of big fire and small fire;

Overpressure protection; leakage detection ;

Automatically feed water and stop the pump;

Alarm interlock for super low water level;

Alarm and shutdown for too high exhaust gas temperature.

III. Technical datasheet

IV.Accessories

1. One Year Guarantee for Whole Machine

2. 24 Hours Technical Support by Email
3. Ues-friendly English software, user manual and detailed Videos / CD

Henan Yuanda Boiler Co,. Ltd, founded in 1956, is one of the leading enterprises which firstly obtained boiler manufacturing license in China.

Our factory is located in the west industrial agglomeration area of Xihua county,Henan province. R & D center and marketing center are located in the capital city,Zhengzhou, Henan Province.We are high-tech enterprise combining with research, development and sales of heating system and power system. We have B-class boiler manufacturing license(professional for industrial boilers) and D-class pressure vessel manufacturing license, and passed ISO9001,ISO14001 and OHSAS18001.

The factory has beautiful environment with cover area 66000m2 and building area 30000m2. We have employees more than 200 people, including engineers 30 people and senior engineer 10 people. We have advanced equipment, with 430 sets of main production equipment and 30 sets of testing equipment.

We have our own R&D team and cooperate with famous high-tech research institutes at the same time , such as Beijing "Zhiguang" boiler institute,Harbin Institute of Technology and Xi'an Jiaotong University, which ensures our product and technology are in the forefront of technology and science. Till now, we have got more than 10  boiler patents.

 Our main products include Our main products include more than 150 kinds, namely,

1. DZL new type water fire tube boilers (1-35T/H, 0.7-29MW)

2. WNS series oil/gas fired boilers (0.3-20T/H, 0.35-14MN)

3. SZL series water tube biomass boilers (2-35T/H, 1.4-29MW)

4. LNB series gas boilers (0.3-10T)

5. LHS series vertical gas/oil fired boiler(0.3-1T)

6. AAC brick/block making machine We sell well in more than 30 provinces and regions in China and in south-east Asia, Asia, Africa, South America, Middle East, Russia, etc. 

"Quality first, technical innovation" is our guideline. We attach importance to introducing new technology and developing new products. All kinds of preferential policies and comfortable environment for talents make our company and our talents grow together. 
We have close relationship with UCLA, SCUT, Zhengzhou University and Beijing Zhiguang Boiler institute and have long-term cooperation with them. We also have our own CAD workstation, which provides strong guarantee for R&D and manufacture. 
We persist in taking "Technical innovation, service society" as development goal, and "quality-oriented, good faith world" as enterprise idea, trying our best to produce heat-supply products. "Creating the maximum value for clients and providing all-round and round-the-clock service" are our lofty missions. 
Yuanda Boiler looks forward to making a brilliant future with you!

Our Factory:

Our Qualifications:

Welcome to visit Yuanda Boiler factory!

Q: How can you get the best price quickly?

A: As soon as the steam capacity / thermal power and pressure are told, we will make the detail price list at once.

Q: Why should you believe our quality?

A: 58 year experience, founed since 1976; Chinese-government appointed Grade A Boiler Manufacturer.

With ISO9001, CE certificates.
Quality control system: Include 8 subsystems, design, techonics, welding, inspection, non-destructive testing, heat treatment, materials physics and chemistry inspection, device management Each process will be strict supervised. 5 process quality point, Raw material inspection, product specimen, NDT, hydrostatic test, Heat treatment. The products must be inspected by third party before delivery.

Q: What about the installation?

A: After you receive the boiler, we will guide you to make some preparation for installation; If necessary, our expert will fly to your local place in 72 hours. The experts will responsible for guiding installation,training, trial operation