Monoblock burners C.260 to C.1100

"Free flame":clean oil combustion.

With burners C.260 to C.1 100, CUENOD offers a range of mid-sized and large burners. They can be installed in all types of boilers in either the service sector, private residences or in industry.

These burners use domestic heating oil, feature progressive two stage operation and a PID control can provide modulating performance. The turndown ratio is 1/4. 

The fuel-air mix is controlled electronically (GEM? system).

To build these burners, CUENOD has implemented all its development resources and technological expertise acquired in large shared and industrial installations.

Burners are designed, developed and built in compliance with the European standard EN 267.

They received EC certification in compliance with European Directive requirements.

• Machinery Directive 89/392/EEC

• EMC Directive 89/336/EEC

• Low Voltage Directive 73/23/EEC

• Efficiency Directive 92/42/EEC

when burners are installed directly on EC boilers.

CUENOD burners are manufactured in compliance with the quality assurance certificate AFAQ ISO 9001.

Low NOx oil combustion is based on rapid gasification of the fuel by recirculating the combustion gases internally and allows the fuel-air to mix rapidly.

Once the fuel has been vaporized, it will burn and stabilise 30 centimetres from the combustion head. The flame appears to “float freely”, hence the name: “Free flame”.

The heat absorbed by the gasifying oil will cause a significant drop in the flame’s temperature and a decrease in the formation of thermal nitrogen oxide.

The entire range of C.260 to C.1100 burners operate on domestic oil using the “Free-flame” technology. An additional system can be used to control excess combustion air (O2 regulation).

Systems that make all the difference

Aside from combustion, a burner’s most important function is to control the mix of air and fuel. A correct air-fuel mix ensures higher efficiency and lower emission of pollutants.

Mechanical: of all processes known, the first and the oldest is the mechanical process: each of the components in the mix is controlled by a valve or shutter linked to a cam, the profile of which can adjusted.

This is easy to use.

The most recent and universally applied system is an electronic one. It controls the position of one or more activators simultaneously. 

The servomotors of the air flow and oil components are controlled by a microprocessor which contains the setpoints defined for each load curve. 

An additional advantage of the GEM® system (electronic mix management system) is that it provides specific information on all the commands and states of the overall system: these can be accessed directly or by remote control.

Digital programming is easy, either via a specific module or a computer by following simple instructions.

Noise levels of monoblock burners

The combination of a functional housing design and advanced combustion head technology ensures:

• total access, essential for quick and easy maintenance

• complete disassembly of all combustion head components (short and long) in a single action maintains initial combustion settings during maintenance procedures

• compact and few mechanical components ensure quick and easy cleanup

• saves time since few tools are required.

Acoustic tests on the fans of C.260 to C.1100 CUENOD burners measured that noise levels for these burners are very low for this power range.

The configuration of certain systems, the proximity to sensitive areas and, in industrial installations, the continuous presence of personnel require special solutions to reduce noise.

CUENOD offers a solution tailored to each individual situation or budget.

The first solution involves the use of a sound-proofing box.

This box absorbs the noise produced by the burner, such as the sounds of air being sucked in or blown out as well as the noise made by the fan motor.We offer two types of boxes depending on the level of noise reduction required:

• CI.20 for a decrease of between 15 and 20 dB(A), and,

• CI.30 for a decrease of between 20 and 30 dB(A).

These cube-shaped devices completely enclose the burner, leaving openings for the supply of fuel, electricity and combustion air. 

They are mounted on wheels so they can easily be moved when you need to work on the burner.

The second solution recently made available involves the use of the Variatron?. This device is a frequency regulator that adjusts the fan’s speed to the burner load. At low speeds, the fan speed and the air shutter position are such that noise reduction can reach 15 to 20 dB(A).

Adjusting the speed of the motor will adapt the air flow and the air pressure to the required amount: the Variatron® limits amount of electrical energy consumed for optimum efficiency.

The Variatron® is environment-friendly since it adjusts the fan motor’s output to the requirements of the burner/boiler.

Ignition is inaudible and the burner operates smoothly.

Variatrons® are sold as optional features and adapt quite well, with no modification required, to C.260 to C.1100 burners.

型号

燃烧器出力kW

锅炉出力kW

马达功率kW

保险丝A

C260

1270-2620

1170-2410

4.0

16

C300

1700-3250

1560-2990

4.0

16

C400

2150-4500

1980-4140

5.5

16

C500

2880-5300

2650-4870

7.5

20

C620

3140-6440

2890-5920

11.0

25

C750

3800-7800

3500-7180

15.0

40

C900

4800-9590

4420-8820

18.5

40

C1100

6450-11410

5930-10500

22.0

50