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Dry Seasoned Wood Only!
Save These Instructions
Harman® • TL300 Owner's Manual_R25 • 2007 -___ • 08/15
D. The Combustion Process
Combustion in the firebox is precisely controlled and is best
explained in two parts.
During a wood fire, combustion air enters at the bottom front
of the stove where it travels upward through channels at either
side of the front door. From the manifold located above the
front door, it is directed into the firebox as a sheet of air flowing
between the glass and the wood. This concept helps to keep
the glass clean, while providing the oxygen needed to sustain
burning. This is what is known as "Primary Combustion".
Additional air enters at the bottom rear of the stove body.
Some of this air enters through holes in the rear bricks where
it is used to revitalize the fire at the rear of the firebox. The
remainder is delivered into the "Firedome Plus" combustion
package where the "Secondary Combustion", or re-burning
of the smoke, occurs.
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.
A second stage is where the volatile gases contained in the
wood are released and burned. This represents most of the
wood's heating capacity. The final stage is the charcoal stage
where the charcoal burns the remaining heat content in the
wood fuel. Ash remains after the burning is complete. Within
the primary firebox two or more of these stages of combustion
are occurring at once.
Always be sure to provide adequate ventilation to the room
where the appliance is located, to prevent air starvation.
In tight construction, consider installing outside air to the
appliance.
Grates
The unique grate system consists of one
flat bottom grate,
and two front andirons. The bottom grate has slots which
allow the ash to fall into the ash pan by passing a poker back
and forth across the grate. The andirons keep the fuel from
coming into direct contact with the glass, and keep hot coals
and embers from spilling out while reloading. Never build a
fire directly against the glass.
The grates and andirons must remain in place at all
times. Do not tamper with or change the configuration
of this grate system.
C. Burning as a Fireplace
This appliance has been tested and approved for burning as
an open fireplace. To do so, a spark screen (Harman part#
3-40-06960; Cozy Screen) must be installed over the front
door opening. The by-pass damper must be kept in the open
position.
The Cozy Screen can be used from the start of a fire or can
be used with an existing one. When starting a fire with the
Cozy Screen, smoke spillage may occur until it develops a
draft strong enough to pull all smoke back into the flue.
DO NOT LEAVE THE APPLIANCE UNATTENDED WITH
THE DOOR OPEN!
Load only small amounts of wood at a time.
