26 Harman Oakwood
3-90-08327R26_03/14
The Chimney System
Creosote
When wood is burned slowly, it produces tar and other
organic vapors, as well as soot, which combine with expelled
moisture to form creosote. The creosote vapors condense
in the relatively cool chimney ue (associated with a slow
burning re). As a result, creosote accumulates on the ue
lining. When ignited, this creosote can result in an extremely
hot re.
The FireDome on the Oakwood cuts creosote to almost
nothing when properly burned with dry seasoned wood.
The chimney should be inspected at least once every two
months during the heating season to see if any creosote
build-up has occurred. Checking your chimney and chimney
connector more frequently, especially while you are getting
used to your stove, is recommended. To inspect this system,
let the stove cool. Using a ashlight and mirror, check the
interior of the chimney connector, and the chimney itself.
If a signicant layer of creosote or soot has accumulated
(1/8" or 3 mm) it should be removed to reduce the risk of a
chimney re.
To clean deposits from the surface of the connector, use a
stiff wire brush after dismantling the connector assembly. To
clean the chimney, use a specially designed brush sized to t
your particular ue opening, or call an established chimney
cleaning service.
At the end of each heating season, perform a thorough
examination of your chimney system, and have it cleaned
and repaired as necessary.
MAINTENANCE
Gaskets
Gaskets are used at strategic positions when building the
Harman® Oakwood for controlling the path that incoming
and outgoing air and gases take through the stove. You
must check these gaskets from time to time, and replace
them when necessary. The gaskets are made of berglass
of different sizes (obtainable from your Harman® dealer)
and some are xed in place with a high temperature stove
gasket cement. To change a gasket, rst remove the worn
berglass and clean the area with a wire brush. Also clean
any other surfaces that come into contact with the gasket.
Place a small bead of cement in the area under the gasket
if required, then press new gasket material into the channel;
do not overlap the ends. Seat the gasket rmly by applying
pressure when possible; for example, after changing the
door gasket, close the door. Allow the cement to dry before
using your stove.
Gaskets are located:
• On the doors to provide airtight closure.
• Between the damper and the damper frame.
• On sides between top and bottom plates.
• Inner front to air wash.
• Rear cover
• Rear housing
Damper Ramp Adjustment
After the stove has been in operation for awhile, the damper
gasket may compress and allow the damper handle to move
from the open to the closed position without the added
ramp tension needed to keep the damper held in the closed
position.
To adjust the ramp, the stove MUST be allowed to go
out and cool down.
• After the stove has cooled off, remove the stove pipe from
the stove collar and close the damper.
• Using a ashlight, look into the collar. About midpoint of the
damper plate on the backside you will see the adjustment
bolt for the ramp tension.
• You will need (2) 7/16 " wrenches. Use one to hold the
bolt still while using the other to loosen the nut.
• Turn the bolt inward (clockwise facing the head)
approximately 1/4 turn and retighten the locknut.
• Now open and close the damper to check for proper
tension on the damper lever while moving into the closed
direction.
• If the tension is incorrect, readjust the bolt.
IMPORTANT NOTE
The only suitable method for removing creosote from
the venting system is a chimney brush. Creosote
sweeping logs, powders and other products have the
potential to damage the Firedome combustion system,
and are not recommended for use in Harman wood
stoves. Use of chemical creosote removal products
will void the warranty of the Firedome combustion
system.
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