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Report prepared for Guillaume Thibodeau-Fortin (Stove Builder International Inc.) on
6/8/2020 7:48:41 AM
MANUAL INSTALLATION AND OPERATION WFP-75 8411 ENGLISH
OF 40)
6.4
Exhaust System
Wood smoke can condense inside the chimney, forming a inflammable deposit called creosote.
If creosote builds up in the system, it can ignite when a hot fire is burned in the fireplace. A very
hot fire can progress to the top of the chimney. Severe chimney fires can damage even the best
chimneys. Smouldering, smoky fires can quickly cause a thick layer of creosote to form. When
the fireplace is operated properly, the exhaust from the chimney is mostly clear and creosote
builds up more slowly.
«Creosote - Formation and Need to Removal
When wood is burned slowly, it produces tar and other organic vapors, which combine with
expelled moisture to form creosote. The creosote vapors condense in the relatively cooler
chimney flue of a slow-burning fire. As a result, creosote residue accumulates on the flue
lining. When ignited this creosote makes an extremely hot fire.
The chimney connector and chimney should be inspected at least once every two months
during the heating season to determine if a creosote buildup has occurred.
If a significant layer of creosote has accumulated (1/8" [3mm] or more) it should be removed
to reduce the risk of a chimney fire.»
6.4.1
Sweeping the Chimney
The chimney should be checked regularly for creosote build-up.
Inspection and cleaning of the chimney can be facilitated by removing
the baffle.
6.4.2
Cleaning Frequency
It is not possible to predict how much or how quickly creosote will form
in the chimney. It is important, therefore, to check the build-up in the
chimney monthly until the rate of creosote formation is determined.
Even if creosote forms slowly in the system, the chimney should be
cleaned and inspected at least once each year.
Establish a routine for the fuel, wood burner and firing technique. Check daily for creosote
build-up until experience shows how often you need to clean to be safe. Be aware that the
hotter the fire, the less creosote is deposited. Frequent cleaning may be necessary in mild
weather even though less frequent cleaning may be enough in the coldest months. Contact your
local municipal or provincial fire authority for information on how to handle a chimney fire. Have
a clearly understood plan to handle a chimney fire.
6.4.3
Chimney Fire
Regular chimney maintenance and inspection can prevent chimney fires. If you have a chimney
fire, follow these steps:
1.
Close the fireplace door and the air intake control;
2.
Alert the occupants of the house of the possible danger;
3.
If you require assistance, alert the fire department;
4.
If possible, use a dry chemical fire extinguisher, baking soda or sand to control the fire. Do not
use water as it may cause a dangerous steam explosion.
Do not use the appliance again until the fireplace and its chimney have been inspected
by a qualified chimney sweep or a fire department inspector.
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Stove Builder International Inc. | 46345 | Rev: Apr 13 2020 12:33PM | Uncontrolled Copy
WFP-75 8411
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