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Venting high-efficiency boilers into masonry chimneys ...

May 01 1999 · When the gases hit the cool masonry condensation forms on the inside of the chimney. This condensation is highly acidic and breaks down all masonry products including brick mortar and terra-cotta liners. If the is on an outside wall the degradation is compounded by the cooler temperature of the

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Can I Still Have My Boiler Flue Down My Chimney?

Nov 23 2016 · Your chosen boiler (for example the Greenstar FS 30CDi or FS 42CDi) can be fitted or piped just like a regular boiler but instead of a concentric flue going through the wall with a 100mm duct drawing in air and a 60mm duct expelling the fumes a concentric flue goes from the to the .

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