Exhaust System - Osburn STRATFORD II OB04007 Installation And Operation Manual

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4.
Apply a bead of approximately 3/16" (5 mm) of high temperature silicone in the door gasket
groove. Starting from the middle, hinges side, press the gasket into the groove. The gasket must
not be stretched during installation.
5.
Leave about ½" (10 mm) long of the gasket when cutting and press the end into the groove. Tuck
any loose fibers under the gasket and into the silicone.
6.
Close the door. Do not use the fireplace for 24 hours.
6.5

Exhaust System

Wood smoke can condense inside the chimney, forming an inflammable deposit called creosote.
If creosote builds up in the system, it can ignite when a hot fire is burned in the insert. 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 insert 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 creosote has accumulated (⅛" [3  mm] or
more it should be removed to reduce the risk of a chimney fire»
6.5.1
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 buildup 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 buildup until experience shows how often you need
to clean to be safe. Be aware that the hotter the fire, the less creosote is deposited and weekly
cleaning may be necessary in mild weather even though monthly 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.
Installation and Operation Manual - Stratford II
I
J
K
L
Location
On each door
frame (L)
Center door (K)
Dimensions
45 ½" long
Round ⅝"
20 ½" long
Round ¼"
Page 27

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