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15.
Mount the Flue Gas and Air Supply Systems
After the cascade installation has been connected to the heating installation, the flue gas and air supply systems
must be mounted in compliance with the applicable standards and regulations and in accordance with the
instructions from the Installation & Service Manual of the S-CBX boiler series.
15.1 Individual flue systems
The individual flue systems must be mounted in compliance with the applicable standard and in accordance with
the instructions from the Installation & Service Manual of the S-CBX boiler series (
“Flue gas and air supply
system”).
For each boiler, the combined resistance of the individual flue gas and air inlet pipe can be calculated and
checked with the maximum resistance allowed.
For resistance tables and example calculations we refer to the mentioned chapter in the boiler manual.
15.2 Common flue system
A common flue system must be designed in accordance with EN 13384-2
“Chimney – Thermal and fluid
dynamic calculation methods
– Part 2: Chimneys serving more than one heating appliance.”
Strebel Ltd can advise you on the software to be used for doing these calculations. Do not attempt to design
common flue systems without the appropriate software and training.
