Check Icon More than 150 years of experience
Check Icon Experts in flue gas and heat pumps
Check Icon Ease of installation & speed
Check Icon More than 2,000,000 homes supplied
Flue gas discharge in utilities

Flue gas discharge cascade systems

In commercial buildings, the heating demand is often too large for a single boiler. Therefore, multiple boilers are combined in a cascade arrangement. The boilers work together as one system and are connected to a common flue gas discharge. Cascade systems offer flexibility, operational reliability, and efficient operation with varying heating demands. Burgerhout supplies flue gas discharge systems that are specially developed for cascade arrangements in commercial installations.

Advantages

Why choose a cascade system

In a cascading setup, multiple central heating boilers are linked together to provide the required output collectively. The boilers are controlled by a cascade controller which determines how many boilers are needed at that particular time. A cascading setup offers several advantages over a single large boiler:

Flexible power
The total power can easily be adjusted by adding extra boilers.

Efficient operation
The boilers are equally loaded, ensuring high efficiency at partial load.

Business continuity
When one boiler fails, the other boilers continue to function.

Compact installation
Multiple boilers can be installed relatively compactly in the technical room.

Plastic or stainless steel

Burgerhout solutions for cascade systems

At Burgerhout you can choose between a plastic cascade system or a stainless steel solution for larger diameters. Plastic systems are usually used up to a collector diameter of 200 mm. Stainless steel is chosen for larger diameters.

Multiline (PP)

Multiline (PP) is a robust, sleek grey plastic flue gas discharge system that is easily applicable in cascade arrangements of high-efficiency appliances. The modular system consists of a clear number of components, with which you can quickly build a solid flue gas discharge system.

Plastic flue pipes are lightweight and easy to process. Components can be easily adapted, making the system pleasant to work with during installation.

Multiline (PP) is available in diameters up to 200 mm and suitable for various cascade setups.

View Multiline

Roccheggiani SP(G)

Do you need diameters larger than 200 mm for your project? Then you can go to the stainless steel cascade systems from Roccheggiani.

These robust systems are suitable for utility installations with higher outputs and larger flue gas diameters. For projects with specific requirements, Burgerhout can develop a solution with Roccheggiani that perfectly matches the installation.

View Roccheggiani SP(G)
Settings

Cascade system configurations

The way boilers are installed depends on the available space in the technical room. The configurations below are also applied within the Multi-PP cascade system.

Double line-up

For larger installations, two rows of boilers can be used. The flue gas is then discharged via a central collector.

practice

Burgerhout solutions for cascade systems

Industrial installations often place higher demands on a flue gas discharge system than installations in homes. The output is greater, the diameters are often larger, and the routes can be longer.

Therefore, several points are important during design and installation.

  • The correct diameter

The diameter of the flue gas discharge system must be properly matched to the output of the boiler installation. A diameter that is too small can cause the boiler to malfunction or the system to have insufficient capacity. The required diameter is determined based on the boiler manufacturer's specifications.

  • Material selection

Depending on the application and the required diameter, different materials can be chosen.

Plastic systems are light, easy to process and suitable for many HR applications. Aluminium and stainless steel are often used for larger diameters or specific project conditions.

  • Accessibility and maintenance

In utility buildings, the boiler installation is usually located in a technical room. This allows maintenance and inspection to be carried out centrally.

A well-designed flue gas discharge system takes into account accessibility and ease of maintenance.