Balanced Flue Systems

The Avent balanced flue system provides all requirements for ventilation combustion air and flueing in one carefully designed aesthetically pleasing unit.
The system allows a balance between the air inlets and the exhaust outlets. This is achieved by both being in a zone of normally equal pressure. Down draft is therefore eliminated allowing the boiler/s to operate at maximum efficiency.

The Avent balanced flue always operates at the optimum efficiency no matter what the wind conditions.

During calm conditions, the natural buoyancy of the flue gases causes clean air to be drawn in via the louvre vents, through one or more of the segmented compartments within the terminal and down into the boiler room. The temperature difference between the ambient air and the boiler room helps to create convection currents. Air changes take place when warm stale air is vented through the remaining segmented compartments.

During windy conditions the effect of any excess air on the flue is taken away by the system. Clean air is forced, via the louvred vents through the segmented compartments within the terminal on the windward side and down into the boiler room. At the same time, an amount of excess air is vented through the segmented compartments on the leeward side of the terminal.

The products of the combustion are exhausted through a heavily insulated stainless steel flue which is built into the central core of the terminal. As the flue outlet and the air inlet are at the same level and consequently in the same pressure zone, this ensures that even a small variation in the wind pressure affects the inlets and outlet equally, thus creating an equilibrium and a balanced condition within the boiler room at all times.