ZWNS Integral Condensing Vacuum Boilers

  • Item No.:

  • Payment:

    TT LC at sight
  • Product Origin:

  • Color:

    Blue and White
  • Shipping Port:

    Guangzhou, Shenzhen
  • Min Order:

  • Lead Time:

    30-45 days
Inquiry Now
brief introduction

Devotion Condensing Vacuum Boilers:

  • Integral, compact, three-pass structured.
  • Built-in economizer.
  • Heat efficiency exceeds 96%.

Product Details

A Vacuum Condensing Hot Water Boiler, can meet demand for heating and hot water simultaneously. Water temperature can be adjusted per request.

Widely used for central heating and hot water on commercial buildings, hotels, hospitals and university.

How does it work?

Water boiling temperature varies under different pressure. Under negative pressure, water within boilers, after absorbing the heat, produce low temperature steam which up flow and heat recycled water going through the heat exchanging tubes. The steam then condensate into liquid water and are re-heated. eating-vaporating-condensating cycle keeps going on within the boiler.

For Vacuum Condensing Steam Boilers, recycled water first go through condenser of smoke heat-exchanging system to decrease exhaust flue temperature, steam contained in the flue condensates and release heat thereafter, heat absorbed and heat efficiency thus improved.

Integral Condensing Vacuum Boilers



A boiler can go with groups of heat exchangers used for different purposes, which remarkably reduce the complexity and investment, too.

Copper tube heat-exchangers

Heat transfer of anti-corrosive copper tubes is far better than stainless steel ones. Copper tubes joints are apt to expand better and maintain vacuum for a long time.

Digital display of pressure

Digital display delivers more accurateness, safety and lucidness.


Multi-protections of temperature, pressure, water level and mechanical anti-explosion. Even if all protection controllers fails, mechanical anti-explosion can discharge pressure in order to keep boiler running safely.

Two pack coating insulation

Insulation materials adhered directly to boiler body to have perfect insulating performance, heat loss is minimal so to save fuel.

Intelligent control system, high efficiency and safety

The highly intelligent control system enables automatic ignition, combustions, load adjustment, continuous water feeding and safe running


Tried and tested sacrificial anodes protection method is used to protect the boiler body from corrosion and prolong service life.

Maintain vacuum

Well-known brand vacuumizer automatically starts working once vacuum drops to maintain high vacuum degree, and thus accomplish energy-saving.

Dismountable heat exchanger chamber

Heat exchanger chamber was locked by high pressure resistant blind flanges at both ends, which can be dismounted to allow easy access to copper tubes for convenient maintenance.

Condenser made from ND steels

Condenser made from ND steels characterizes anti-corrosion, long service life. It can recover waste heat in smoke, thus improve heat efficiency and save fuel.

Helium leak detecting

Helium leak detector is used to inspect every weld and instrument connection to guarantee reliable vacuum.

Easy operation, energy saving

Easy setting thanks to simple human-computer interface. Unmanned guarding is realized. Fully automatic adjusting combustion subject to load can largely reduce operational cost.

Condensing Vacuum Boiler Technical Data

Condensing Vacuum Boiler Technical Data

Condensing Vacuum Boilers Installation Dimension

Condensing Vacuum Boilers Installation Dimension

Send a message

Inquiry more details. Your enquiry will be answered within 12 hours

Hot Products
  • Industrial Steam Boiler Manufacturer

    Horizontal Gas Fired Steam Boilers

    DEVOTION WNS series Gas Steam Boilers are internally fired, three-pass and wet back shell boilers. Rated output(ton/hour): 0.5,1,2,3,4,5,6,8,10,15,20 Customer tailored design is available.

  • Vertical Small Gas Or Diesel Oil Steam Boilers

    Vertical Steam Boiler

    Devotion LSS Vertical Steam Boilers are available under 2 ton per hour. Rated steam output ranges 0.3, 0.5, 0.75, 1.0, 1.5, 2 tons per hour Applicable with fuel of light oil, heavy oil, natural gas and LPG Features:  small footprint, easy to install, small water volume and quick start-up

  • Oil Fired Steam Boiler For Factories

    Horizontal Oil Fired Steam Boilers

    Devotion Oil Steam Boilers are cost effective, reliable and endurable thanks to the designed with internationally tried and test three pass wetback structure, and lower combustions chamber. Available with capacity ranges from 0.5 TPH to 20 TPH. Fuel type: light diesel, heavy oil, natural gas, LPG Optional with IOL system enables boiler operation more effective, economical and safer.

  • Water Tube Steam Boilers and Hot Water Boilers

    Water Tube Steam or Hot Water Boilers

    For Water tube Hot Water Boilers of capacity over 10 ton per hour and pressure above 1.6Mpa, Devotion SZS Water Tube Boilers are recommended. Devotion SZS Water Tube Boilers include: Saturated Steam Boilers Overheated Steam Boilers Hot Water Boilers

  • Large Autoclaves Used for Steam Curing

    Industrial Autoclaves

    Application of autoclave The autoclave is large steam curing equipment. It can be used for steam curing sand bricks, fly ash bricks, aerated concrete blocks, high strength cement electric pole, concrete piles and other cement products. Besides, it can also be used for wood, pharmaceutical, chemical industry, glass, insulation materials and fishing net processing industries.

Related Product
Devotion Condensing Hot Water Boilers WNS Condensing Atmopheric Hot Water Boiler
Devotion Integral Condensing Hot Water Atmospheric Boilers are three-pass and full wet back structured with integrated economizer. The boiler features compact structure, highly energy-saving with heat efficiency above 96%. They are widely applied on commercial buildings, hotels, hospitals and used for heating and sanitary hot water to schools.
get brochure
Devotion WNS High Efficiency Condensing Steam Boilers WNS Integral Gas or Oil Fire Tube Condensing Steam Boilers
DEVOTION Condensing Steam Boilers apply condenser heat recovery technology to thorough recover and reuse energy in the flue gas, as a result of which, exhausted flue temperature is remarkably lowered and thus achieve high-efficiency and low-pollution emission. Rated evaporation: 0.5-20 t/h Fuel: light diesel, heavy oil, natural gas, urban gas Heat efficiency: >100%
get brochure
Devotion WNS High Efficiency Condensing Pressurized Hot Water Boilers WNS Condensing Pressurized Hot Water Boiler
Having 6-8% higher efficiency than regular hot water boilers, Devotion Condensing Pressurized Hot Water Boilers, availing three-pass structure and integrated with separate economizer, are specially designed for central heating, and extensively applied on industrial, commercial and civil heating projects. Rated output: 1.4MW-14MW Rated water pressure: 0.7, 1.0, 1.25, 1.6, 2.0 Mpa
get brochure
Vacuum Hot Water Boiler ZWNS Series Vacuum Hot Water Boiler
The working truth of vacuum hot water boiler: The vacuum hot water boiler consists of two parts: the evaporation zone and the heat exchanger. The evaporation zone is in the lower half of the boiler. It is a three-way boiler structure; the upper part is a steam-water heat exchanger. When the vacuum hot water boiler is running, the vacuum pump is used to pump the boiler first, so that the internal pressure of the boiler is in a state of vacuum negative pressure, and the air inside the boiler is exhausted by using a thermal exhaust method.
get brochure
Outdoor Gas Or Oil Hot Water Boilers Room Outdoor Hot Water Boilers
Outdoor Integrated Boilers(condensing vacuum boilers or condensing atmospheric hot water boilers)
get brochure
Devotion Gas Fired Pressurized Hot Water Boiler WNS Series Gas Fired Pressurized Hot Water Boilers
Devotion WNS Series Gas Fired Pressurized Hot Water Boilers is mature constructure of 3 pass firetube and the capacity of 0.35WM-14WM and the temperature of 95/70 and widely use in industry production.
get brochure
chat now
Inquiry more details. Your enquiry will be answered within 12 hours

online service