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20 Harman TL300
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 accumu-
lates on the ue lining. When ignited, this creosote can
result in an extremely hot re.
The FireDome on the TL300 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 creo-
sote 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 as-
sembly. 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 the heating season, perform a thorough
examination of your chimney system, and have it re-
paired if necessary.
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 mid-
point of the damper plate on the backside you will see
the adjustment bolt for the ramp tension. (See gure
on right.)
• 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) ap-
proximately 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.
Gaskets
Gaskets are used at strategic positions when building
the Harman TL300 for controlling the path that incom-
ing 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 ce-
ment 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.
• Rear cover
• Rear housing
Loosen nut
Turn bolt inward 1/4 turn.