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4.5 Cascade flue dimensions
continued…
The cascade flue kits that are supplied for the Thision L Evo boilers is a 2 boiler version of the casade
header, however further additional extension kits and are added on depending on how many boilers is in
the installation. For example, if you have 4 boilers on an in-line cascade frame then the kit will come with
one 2 boiler in-line cascade flue set and 2 additional extension kits of cascade flue.
The overall length of the cascade flue will be the 2 boiler cascade header plus the individual extension kits
multiplied by the number of boilers.
Each extension kit comes with a vertical single skin pipe to be used to take the flue gas into the cascade
flue header. This section will be supplied in a 500mm length. To achieve the 3° incline back to the boilers
this length will need to be cut down to facilitate this requirement and this information can be found in the
cascade installation manual for the Thision L Evo boiler.
DN150 In-Line Cascade Flue
603mm
1493mm
205mm Centre to Centre
285mm
DN150
100mm
100mm
621mm
362mm
DN200 In-Line Cascade Flue
1493mm
205mm Centre to Centre
DN200
100mm
100mm