Harman 300i Wood Insert
14
3-90-300101
Harman® • 300i Wood Insert Owner’s Manual_R13 • 2010 -___ • 04/15
Operation
draft
Before you install and operate your 300i woodburning
insert, please read the entire contents of this
manual. Pay particular attention to the explanation
of draft and its effect on insert performance in
the Installation section. By following the installation and
operating guidelines, you will ensure proper draft and gain
maximum efficiency and enjoyment from your insert.
Fuel
Your insert burns wood very efficiently. Here are some
guidelines concerning log size and moisture content that will
help you obtain the best performance.
Select hardwoods if possible, as they are heavier and contain
more heating capacity (BTU’s) per load than do softwoods.
Wood should be split and stored under cover for “seasoning",
a year is recommended. Your insert is not an incinerator-do
not burn garbage, painted or treated wood, plastic, or other
debris.
Keep the area around the insert free from clutter. Keep
all combustibles, including fuel, beyond the code-required
clearance distance (48" or 1215mm in the U.S., 1525mm or
60" in Canada). Never store fuel in front of the insert where
it could interfere with door operation, safe loading, and ash
removal
.
Doors
Your insert has a large glass-paneled door for loading and
fire viewing. To open the glass door, lift the handle upward
and pull open; to close the door, push the door closed, and
press down on the handle to latch.
The door must be closed while the insert is in normal
operation, and the gaskets routinely examined for wear and
replaced when necessary. Good door seals are important for
maintaining control of the insert. Operating the insert with the
door inadequately sealed, could create a serious over-firing
condition (discussed later in this section).
The glass used in your insert is manufactured to exact
standards to withstand the high heat of the fire. Like all glass,
it must be treated with common sense and care. Never abuse
the glass by slamming the door shut or striking the glass with
a heavy object. Do not clean the glass while it is hot. If the
glass is broken or damaged, do not operate the insert until
it has been replaced (See instructions in the Maintenance
section.)
CAUTION
!
hot whIle In operatIon, Keep chIldren,
clothIng and fUrnItUre away. contact May
CAUSE SkIN bURNS.
Andirons
The andirons keep the fuel from coming in direct contact with
the glass, and keep hot coals and embers from spilling out
while reloading. Never build a fire directly against the glass.
Always keep the fuel load behind the andirons.
Do not use a grate or otherwise elevate the fire. Build the fire
directly on the insert's brick floor.
paint Curing
As you begin to operate your insert at higher temperatures,
you will notice a “hot” or unpleasant smell; this is just the
paint going through the curing process, and will disappear
after a few fires.
FIREpLACE STOvES EQUIppED WITH DOORS
shoUld be operated only wIth the door(s)
fUlly open, wIth the screen In place, or
fUlly closed. If doors are left partly open,
gas and flaMe May be drawn oUt of the
fIreplace stove openIng, creatIng rIsKs
FROM bOTH FIRE AND SMOkE.
WARNING
!
WARNING
!
never build a fire directly against the glass. always
keep the fuel load behind the andirons.
the combustion process
Combustion in the Harman 300i Wood Insert 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 invigorates the fire at the rear of the firebox. The remaining
air is delivered into the "Firedome" combustion package
where it combines with the heated exhaust gases. This re-
burning of the smoke is known as "Secondary Combustion".
