The modern appliance for solid fuel like every other item of household equipment work satisfactorily, when they are properly selected and correctly connected. Then it is little probable any sort of problems to appear. There are occasions when the problem of the smoky fire presents itself.
Smoke problems and bad draught are caused by poor design and construction of the chimney – insufficient dimensions and an unfavorable site conditions.
In this brochure (Problems with the chimney) you can find possible causes and solutions.