Are the clearances for concentric fan flues to openings/windows etc measured from the exhaust or from the air intake?
My contractor has fitted flues less than 4" from a window but argues that as there is a plumeing kit on it taking it 300mm away, it is ok. Is he right or is he trying to pull the wool over my eyes?
My contractor has fitted flues less than 4" from a window but argues that as there is a plumeing kit on it taking it 300mm away, it is ok. Is he right or is he trying to pull the wool over my eyes?