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Incredible Shrinking Chimney
My mother-in-law has a 3 storey Brooklyn brownstone. The steam boiler was replaced this winter in an emergency job. They replaced the boiler with the same model, but at inspection time they were told that their masonry chimney needed to be lined. Unfortunately the 8" vent pipe on the boiler is too big to be carried up through the masonry chimney. Apparently a liner can be installed, but only at the cost of breaking the interior wall into the chimney on each floor.
I'm sure you Wallies must have run into this situation before. Are there any creative approaches for dealing with a situation like this?
FWIW, it's a Weil-McLain EG-75 Steam boiler, and it was a straight replacement for the one that was in there previously, which had blown a section, I think.