It's actually steam and smoke coming from the chimney - the exhaust steam is directed up the chimney to drag the hot gases (and smoke) from the firebox through the boiler tubes to heat the water in the boiler.
JBofBrisbane 1 year ago
@JBofBrisbane: Very helpful. Thanks.
davidwn 1 year ago
It's actually steam and smoke coming from the chimney - the exhaust steam is directed up the chimney to drag the hot gases (and smoke) from the firebox through the boiler tubes to heat the water in the boiler.
JBofBrisbane 1 year ago
@JBofBrisbane: Very helpful. Thanks.
davidwn 1 year ago