Everything for the flue system of several boilers: a new CLV in an apartment building, the renovation of a shunt or an old CLV, and cascades for boilers that stand together in one boiler room. Choose below what you have on site.
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New build: CLV
A CLV is a concentric duct over all floors, with the flue gases inside and fresh air around them. On each floor a tee connects the boiler. All boilers share one duct with one terminal on the roof.
Renovation: shunt and old CLV
The existing shaft stays in place. You pull a new liner into it, either one shared duct (C14/C13) or a separate flexible liner per boiler (C15). The space around the liner becomes the air supply.
Cascade
When several boilers stand together in one boiler room, you connect them to one collector with a non-return valve per boiler. Here you will find cascades in white or black PPS and concentric C93x.
Which duct fits?
Send us the number of boilers with make and model, and the height of the building. We check the diameter to EN 13384-2 and draw up the list.