Fireplace must be operated by gravity (no forced airflow) and only a string is produced by a chimney, which should be broad enough and protected from above against precipitation, wind blow (reverse direction), etc. .
Fireplace lazima kuendeshwa na mvuto (hakuna airflow) na kamba tu ni zinazozalishwa na chimney ambazo lazima pana ya kutosha na salama kutoka juu dhidi ya precipitation, upepo pigo (reverse mlolongo), nk .