Had replace my coal furnace last tuesday. It ran away and started a fire. Thank GOD for fire extinguishers.
Anyways I got a hotblast. The smaller one. Installed it with manual and barro. Was easy to start, was burning soft coal. It burn great and all night. Due to work I'm gone 12 hours. It woud still be burning. Threw in fresh coal shake and get blazing again.
The problem, very little heat output. Also the shaker grate stinks. Its a ash collecter.
So monday I got 3 buckets of hard nut. Emptied firebox, started for with soft. Then 4inches of hard. When blue flames everywhere mound her up.
Getting more heat less ash, no smoke. oyea i like that crackle sound it makes.
I still dont think im getting enough heat. Im thinking of pricing a replacement spinner,bolt and mounting bar. Plasma again rough hole, run a boring bar to size. Then ill have to vents side by side.
And yes I bought a new fire extinguisher. Mounted 1/2 inch thick cement wanderboard on joist above furnace with two smoke detectors. Plus the one that I had at top of stairs.
Anyone have any thoughts on this modification. Or any other ideas help pointers.
thanks for all the help I got from reading other post.