Horizontal Hot Water Boiler

Min.Order Quantity:
1 Set/Sets
Supply Ability:
50 Set/Sets per Month
Payment Terms:
0.35MW to 7 MW Industrial Hot Water Boiler
•CWNS series are horizontal internal combustion wet back shell boilers. Composed of a pot shell, a furnace, a back-combustion chamber, front and rear smoke boxes, fire tubes, etc.
•Small-scale adopts straight furnace, large-scale adopts corrugated furnace to strengthen heat transfer and improve thermal efficiency
•The back-combustion chamber adopts the butt welding process and the wet-back structure, which avoids the disadvantages of the welding seam easily falling off due to the back tube plate washed away by the high temperature flue gas, and ensures the safe operation of the boiler
• Delivered as a complete machine, touch screen, PLC program control, ordinary computer and other control systems are available
•The appearance is packaged in milky white color steel plate, which is beautiful and elegant
•Heating for hotels, residences, villas, office buildings and hot water for daily life and washing, heat preservation, disinfection, etc. in the catering industry
•Gym, gymnasium, swimming pool, rapid supply of large amounts of hot water;
• Heat supply for shopping malls and shopping centers;
•Heat source required for industrial washing, drying, and various heating;
•heating, washing, disinfection in hospitals and hot water places required for other industries 
Boiler Model CWNS1.05  CWNS1.2 CWNS1.4 CWNS1.75 CWNS2.1 CWNS2.45 CWNS2.8 CWNS3.5 CWNS4.2 CWNS5.6 CWNS7.0
Rated calorific value(kcal/H) 90 100 120 150 180 210 240 300 360 480 600
Rated pressure(Mpa) 0
Outlet/inlet water temperature(℃) 85/60
Feed water temperature(℃) 20/104
Thermal efficiency(%) >92
Boiler Stack Diameter 400*280  420*300    520*310    500*280    650*300    680*300    680*300    680*360    700*320    700*350    850*400  
Nox emission(mg/m3) 120/80/30
Exhaust gas temperature(℃) 60/150
Fuel type Light diese1l oil/Heavy oil/Natural gas/Liquefied gas/City gas
Fuel consumption Light diese1l oil
96.1 112.2 133.2 165.5 195.5 190.8 264.2 330.5 384.1 516.9 667.5
Natural gas
115.6 134.4 156.8 193.5 234.0 228.7 317.2 388.5 463.1 620.1 775.7
Max transportation weight(t)  3.5 4.0 4.1 4.5 4.6 6.0 6.5 8.2 10.0 13.3 14.8

Applicable Industries Manufacturing Plant, Food & Beverage Factory, textile/chemical/paper factory, etc
After Warranty Service Video technical support, Online support, Spare parts, Field maintenance and repair service
Local Service Location Egypt, Canada, Turkey, United Kingdom, United States, Italy, France, Germany, Viet Nam, Philippines, Brazil, Peru, Saudi Arabia, Indonesia, Pakistan, Mexico, Russia, Spain, Thailand, Japan, Malaysia, Australia, Morocco, Kenya, Argentina, South Korea, Chile, UAE, Colombia, Algeria, Sri Lanka, Romania, Bangladesh, South Africa, Kazakhstan, Ukraine, Kyrgyzstan, Nigeria, Uzbekistan, Tajikistan
Machinery Test Report Provided
Marketing Type New Product 2021
Warranty of core components 1 Year
Core Components boiler main part
Condition New
Type Natural Circulation
Usage Industrial
Structure Fire Tube/water tube /water-fire tube
Pressure no pressure
Steam Production Max 600kal/H
Style Horizontal
Fuel gas/oil/coal/biomass/wood.etc
Place of Origin Guangdong, China
Brand Name Dongguo
Output Hot water
Dimension(L*W*H) Depends on the boiler capacity
Weight 3.5~14.8ton
Certification ISO, IAF,CE
Warranty 1 Year, One Year warranty with full life service
After-sales Service Provided Engineers available to service machinery overseas
Key Selling Points High effiency and energy saving
Product name Dongguo 0.35MW to 7 MW Industrial Hot Water Boiler for sale
Color customization
Material Q345R Steel Plate
Capacity 3.5 ton to 14.8 ton
Design pressure 0 Mpa
Voltage 220-460V/50-60Hz
Quality Strict producing and testing system
Installation Engineer abroad installation available
How to get the best price quickly?
1. Please offer the boiler capacity & pressure you need, and the fuel you plan to use, then we could offer the suitable boiler model.
2. Please provide your name, email address, WhatsApp/WeChat/Skype, and company name, then we will send the best price and boiler details immediately.
What about the installation and Commissioning?
After you receive the boiler, we will guide you to make some preparation for installation, and our experts will offer overseas installation service if you need, and fly to the installation site within 72 hours.
What is the using life of your boiler?
Normally the boiler is designed for 15 years life span, but with correct operation and well maintenance, the boiler operation life will be longer.
Boiler Maintenance Period
Inspect every 2~3 weeks, mainly checking valves, pipe, flanges, if any leackage, repair it timely. While every quater, make a whole inspection and repair.
Terms of Payment
T/T 30% of total contract value as down payment;
T/T or L/C 70% of total contract value before delivery.
If you have special requirements, we can take a special approach.

1.Reduce the installation work at site greatly and so reduce the possible abuse due to the poor skill of the installation stuff.
2.The combination of the modularization makes the unit is not affected by the stop of part.
3.The water in the furnace act as the heat media and doesn't take part in the exterior circulation, and tiny water replenishment make the warm boiler away from the end stack oxidizing at low temperature due to the low return water temperature. Thus prolong the life of the boiler.
4. The boiler produces heat at normal pressure and supplies heat under pressure. It is no need to perform the complicated boiler report­ing and installation procedure. There is no limitation to the installation field.
5. Nanjing Runtech control technology is equipped with the unit; it is the advanced control technoiogy. The control system makes sure that your boiler runs safely.
Characteristics of the product
Center warm water unit (Heating indirectly)
Concept of the modularized: modularized center warm water unit is the unit that integrate the boiler, circulating pump, valves, instruments, control system and other parts and software in one modular, and all parts are assembled In the plant. The unit can be used in the field directly. Its function can be extended easily. The unit can meet the users' option at many aspects. Its advantage is very obvious.
Characteristic of structures:
Big hearth technology: the big volume radiation wave hearth make the combustion is completely. The heat efficiency is above 90%.
Flow Interrupts technology: to break the boundary of the mist laminar flow and strengthen the convection heat exchange.
Special design for the arrangement of the pipe makes the unit more compact. The high temperature mist enters into the two-travel mist tube from the back globe wet rear. The passage is designed influent, the resistance is low, and the noise of the running unit is low.
The elegant profile of the explosion proof door can be use as ash cleaning door.
Center warm water unit (heating directiy)
1. CWNS series is horizontal wet back internal-combustion shell type boiler. It is made up of the furnace shell, hearth, return com­bustion chamber, front! back mist box, fire tube etc.
2. Straight hearth is designed for the small boiler, and wave shape for big to intensify the heat transmission, thus to increase the heat efficiency.
3. The return combustion chamber is made with the butt welding process, and has a wet back structure, which avoid the disadvan­tage of the welding seam breaks off due to the back tube plate impacted by the high temperature mist.
4. The boiler is delivered integrate. Many control system such as touch screen; PLC programmed control and common computer eat. Can be chcsen by the customers.
5. Milk white color steel plate is used for the outer surface, which makes the boiler is beautiful and elegant.

Horizontal gas fired three pass atmospheric pressure hot water boiler