affperf wrote:Having issues keeping from going out????
8" pipe 8' across with rise to 6" reducer and chimney(14')
8 foot of 8" pipe horizontal run is going to give you a problem. That problem is compouned by the reduction to 6" pipe. This long horizontal run will become blocked with flyash in a short time.
I have never heard of using chestnut coal in one of these, only buck rice and barley.
Do i need timer to fire every 1/2 hour?????
As stated above, you need to run a 15 min or less timer cycle.
Also smoke and steam come through coal in hopper when running?????
Your chiminey is not ideal, you can try limiting the combustion air. If you do not have a choke on your combustion blower you can make it out of sheetmetal, it's easy. I have my Yellow Flame running into a 6" chimney and have the same problem, choking down the combustion air helped a lot. Looks like this.
Please post some photos of your boiler and setup. We all would like to see another Yellow Flame, They are a little rare these days.
Also post your location, One of us may live close by and be able to help you get straitned out.