W415-1013 / B / 07.24.13
70
EN
9.8 CrEOSOTE FOrmATION ANd rEmOvAL
CREOSOTE IN EXCHANGER
TUBES
h84.2
when wood is burned slowly, it produces tar and other organic vapors which combine with expelled moisture to
form creosote. These creosote vapors condense in the relatively cooler chimney fl ue of a slow burning fi re. As
a result, creosote residue accumulates on the fl ue lining. When ignited, this creosote makes an extremely hot
fi re.
The chimney, chimney connector, and heat exchangers (if equipped), should be inspected at least once every
week during the heating season to determine if a creosote buildup has occurred. be aware that the hotter the
fi re, the less creosote is deposited, and a weekly cleaning might be necessary in mild weather, even though a
substantially longer period without cleaning may be suffi cient in colder months.
If creosote has accumulated, it should be removed to reduce the risk of a chimney fi re.