Never ever leave a woodstove in start up mode unattended. I know a lady once that started her stove piled er full . one no no their then left the ash door hanging wide open and went to work . 1 hr later the roof of her house was colapsing in a firey inferno.. Im sorry i may be anal about saftey and may live to see 100 because of it . but wood/ coal stoves are not for the Lazy kind.