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Harman TL300
16
Combustion in the Harman TL300 is precisely con-
trolled and is divided into two parts.
During combustion, primary air enters at the bot-
tom front of the stove and travels up channels at either
side of the front door. This pre-heated air then enters
the manifold, located above the front door, where it is
released into the rebox as a sheet of air between the
glass and the re. This air-wash system cleans the glass
as it provides oxygen to the rebox.
Secondary combustion air enters the stove at the bot-
tom rear of the stove. Here, in the "Firedome", it mixes
additional oxygen with the exhaust, causing it to be
re-burned. This secondary combustion is necessary to
achieve and sustain long, clean burning.
During combustion, the burning of wood proceeds
through several stages. The initial or evaporation stage
is where the moisture in the wood is driven off in the
form of steam. During the second stage, the volatile
gases contained in the wood are released and burned.
This represents most of the wood's heating capacity.
The nal stage is the charcoal stage where the charcoal
burns the remaining heat content out of the fuel. Ash re-
mains after the burning is complete. Within the primary
rebox, two or more of these stages of combustion are
occurring simultaneously.
The Combustion Process
Two important controls - the top load door handle and
the air control lever regulate the operation and output
of the stove.
Top loading door handle/damper interlock.The top
loading door handle is linked to the bypass damper and
serves two purposes. Move the handle forward one po-
sition (approximately 3") and the handle automatically
opens the bypass damper, you must open the bypass
damper, or smoke will come into the room. In this mode
of operation the combustion gases go directly from the
main combustion chamber to the ue collar and exit
into the chimney.
Continue moving and lifting the handle and it opens
the top loading door.
NOTE: The bypass damper must be open for smoke-
less loading. Open the bypass damper by pulling the
handle toward the front of the stove.
Top Load Door Open
Damper Closed
Damper Open
Damper Open
Damper Closed