Just had the 100 series greenwood boiler installed professionally, works great , HOWEVER despite the cold outside temps and the fact that it the boiler is running great, EVERY TIME i load the boiler smoke pours out of the front. Dosent matter what I do it still happens. I have it installed in the workshop with a 6" chimney which travels WAY above the code for height, WTF is going on here, there are no clogs in the chimney as it is NEW and there obviously a draft so WHY does it always smoke me out ???