The flue safely removes combustion products. Incorrect installation can affect combustion, cause condensate leaks, or lead to unwanted flue gas recirculation.
Compatibility
A flue system approved for the specific boiler model must be used.
Length and components
Every bend and every additional length creates resistance. Permissible limits are provided by the manufacturer.
Slope
In condensing boilers, the correct slope is important for the safe management of condensate.
Termination
The exit point must be in a permitted position so as not to affect openings, neighbors, or other building elements.
Maintenance
Connection tightness, mechanical support, and the cleanliness of the exhaust system must be checked.
