Harman Home Heating Oakwood Installation instructions

Harman Oakwood Cast Iron Wood Stove
EPA Certied by
OMNI-Test Laboratories
SAVE THESE INSTRUCTIONS.
Installation & Operating Manual
R11
“Ce manuel est disponible en Français sur demande”
SAFETY NOTICE
PLEASE READ THIS ENTIRE MANUAL BEFORE YOU INSTALL AND USE YOUR NEW ROOM HEATER. FAILURE
TO FOLLOW INSTRUCTIONS MAY RESULT IN PROPERTY DAMAGE, BODILY INJURY, OR EVEN DEATH.
FOR USE IN THE U.S. AND CANADA. THE OAKWOOD IS NOT APPROVED FOR MOBILE HOME INSTALLATION.
IF THIS HARMAN STOVE IS NOT PROPERLY INSTALLED, A HOUSE FIRE MAY RESULT. FOR YOUR SAFETY, FOLLOW
INSTALLATION DIRECTIONS.
CONTACT LOCAL BUILDING OR FIRE OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION INSPECTION
REQUIREMENTS IN YOUR AREA.
CONTACT YOUR LOCAL AUTHORITY (SUCH AS MUNICIPAL BUILDING DEPARTMENT, FIRE DEPARTMENT, FIRE
PREVENTION BUREAU, ETC.) TO DETERMINE THE NEED FOR A PERMIT.
CETTE GUIDE D'UTILISATION EST DISPONIBLE EN FRANCAIS. CHEZ VOTRE CONCESSIONNAIRE DE HARMAN
HOME HEATING.
#3-90-08327

Harman Oakwood 3
Please read this entire manual before you install
and use your new heating appliance. Failure
to follow instructions may result in property
damage, bodily injury, or even death.
Harman Home Heating
352 Mountain House Road
Halifax, PA 17032
U.S.A.
INDEX
INDEX
Introduction 4
Specications   5
Operation/Building a Fire 7
Installation   11
Venting    16
Maintenance   25
Options    27
ServiceParts   28
Warranty 32
NOT APPROVED FOR MOBILE HOME INSTALLATIONS

4Harman Oakwood
Thank you for purchasing the Harman Oakwood. We are condent that you will enjoy the warmth and con-
venience of your Harman Stove for decades to come.
The Harman Oakwood will heat your home while also being multi-functional and visually appealing. When
building your Oakwood, we used only the best precision castings that were designed, so accurately, that
gaskets are used (instead of furnace cement) for assembly.
Harman’s special FireDome, Non-Catalytic, Combustion System was created specically for the Oakwood to
promote clean burning and even heat output. What this equates to is unvarying heat throughout your home over
a longer period of time without the peaks and valleys of other wood stoves. The FireDome attains Harman’s
reputation of high efciency while saving you the expense associated with catalytic stoves. Top loading makes
adding wood easier and allows you to view your beautiful re through the extra large glass door. The glass
stays cleaner because of specially coated glass and the exclusive Harman Air Wash System.
The Harman Oakwood has an ash pan with its own ash door that is used to remove ashes while the stove is
in operation. This means you can keep one re all winter if you desire.
The Harman Oakwood offers a cooking grill that can be placed in the top of the stove while in operation. This
allows you to grill steaks and burgers etc. all year long, even when the weather is not suitable for outside
grilling. If you haven't already purchased the cooking grill, you can do so through your Harman Dealer.
Due to the fact that the Oakwood is hot while in operation, gloves should be worn while tending to the re.
INTRODUCTION
For your reference, please
copy the serial number from
the label on your stove to the
box below.
SERIAL NUMBER
This appliance is also
approved for installation
into a shop.

Harman Oakwood 5
The Harman Oakwood meets the U.S. Environmental Protection
Agency’s emission limits for wood heaters sold after July 1, 1990.
Weight..........................................440 lbs
Flue Size........................................6 inch
Log Length Recommended...........21" Max
Heating Capacity..........................2,000 sq. ft.
Average Emissions.......................2.32 Grams Per Hr.
Emissions on Low........................0.8 Grams Per Hr.
Outside Air size.............................3 or 4 inch
SPECIFICATIONS
26.235"
21"
7.5"
30.234"
24.915"
18.037"
21"

6Harman Oakwood
Andirons
Grate
Top Load Opening
Air Control
Front Load Door
Top Load Door
Bypass Damper Control
Handle
Ash Door
Ash Door Latch
Front Load Door Latch
SPECIFICATIONS
Optional
Cooking Grill

Harman Oakwood 7
Always wear gloves when
operating the stove. OPERATION Do not burn wet wood!
The Stove
Doors
Your stove has a large glass-paneled door for loading
and re viewing, a separate smaller door for removing
ashes and a top loading door.
Front Door
Before opening, always check for wood, embers, or
ash that may be ready to fall out of the door.
To open the glass door, open the bypass damper rst,
then lift the handle and pull out; to close the door, push
the door closed with the handle in the open position, then
push the handle down to engage the latch.
Ash Door
To open the ash door, lift up the handle and pull out.
Close the door by pushing in and pushing the handle all
the way down.
Top Load Door
To open the top load door, open the bypass damper
and then lift to open the top load door.
All doors must be closed while the stove is in normal
operation, and the gaskets routinely examined for wear
and replaced when necessary. Good door seals are impor-
tant for maintaining control of the stove. Never operate
with the ash door open. Operating the stove with the ash
door open, or with a door inadequately sealed, could
create a serious overring condition (discussed later in
this section).
NEVER OPERATE WITH MORE THAN
ONE DOOR OPEN AT A TIME
The glass used in your Oakwood is manufactured to
exact standards to withstand the high heat of the re, but
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. If the glass is
broken or damaged, do not operate the stove until it has
been replaced
(See instructions in the Maintenance section.)
Grates
The Harman Oakwood's unique grate system consists
of one at bottom grate, and two front andirons. The bot-
tom 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 con-
tact with the glass, and keep hot coals and embers from
spilling out while reloading. Never build a re directly
against the glass.
The grates and andirons must remain in place at all
times. Do not tamper with or change the conguration
of this grate system.
GeneralConsiderations
Draft
Before you install and operate your Oakwood
wood stove, please read the entire contents of this
manual. Pay particular attention to the explana-
tion of draft and its effect on stove performance in
the Installation section. By following the installation and
operating guidelines, you will ensure proper draft and gain
maximum efciency and enjoyment from your stove.
Fuel
Your Oakwood burns wood very efciently. Here
are some guidelines that will help you achieve the best
performance.
Select only dry,seasonedwood. Wood for burning
should never be exposed to rain or extremely damp con-
ditions. Hardwoods are favored because they are heavier
and contain more heating capacity (BTU’s) per load than
do softwoods. Fuel wood should be split and stored under
cover for “seasoning” - at least a year is recommended.
Your stove is not an incinerator - do not burn garbage,
painted or treated wood, plastic, or other debris.
Keep the area around the stove free from clutter. Keep
all combustibles, including fuel, beyond the code-required
clearance distance (48" or 1215 mm in the U.S., 1525
mm or 60" in Canada). Never store fuel in front of the
stove where it could interfere with door operation, safe
loading, and ash removal.
Donotburngarbageorammableuidssuch
asgasoline,naptha,orengineoil.
CAUTION:
Alwayswearreretardantgloves
whenoperatingthestove.
SAFETY NOTICE
IF THIS APPLIANCE IS NOT
PROPERLY INSTALLED, OPERATED
AND MAINTAINED, A HOUSE FIRE
MAY RESULT. FOR YOUR SAFETY,
FOLLOW INSTALLATION DIRECTIONS.
CONTACT LOCAL BUILDING OR FIRE
OFFICIALS ABOUT RESTRICTIONS
AND INSTALLATION INSPECTION
REQUIREMENTS IN YOUR AREA.

Harman Oakwood
8
Always wear gloves when
operating the stove. OPERATION Do not burn wet wood!
TheCombustionProcess
Combustion in the Harman Oakwood is precisely con-
trolled and is best explained in two parts.
During a wood re, 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 rebox as a sheet
of air owing 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 re at the rear of the rebox. The
remainder is delivered into the "Firedome" 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 nal 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 rebox two or more of these stages of
combustion are occurring at once.
Two important controls - the damper bypass handle and
the air control lever regulate the operation and output of the
stove.
To open the top or front loading door, you must open
the damper bypass, or smoke will come in 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.
NOTE:Thebypassdampermustbeopenforsmoke-
lessloading. Open the bypass damper by turning the handle
clockwise while facing handle.
Top Load Door Open
SECONDARY AIR
THRU BRICK
SECONDARY AIR FLOW
SECONDARY AIR ENTERING
EXHAUST STREAM
SECONDARY AIR THRU
RAMP BRICK
EXHAUST STREAM
PRIMARY AIR FLOW
PRIMARY & SECONDARY AIR FLOW
Bypass Damper
Open
Bypass Damper
Closed

Harman Oakwood 9
Always wear gloves when
operating the stove.
Do not burn wet wood!
Minimum
Primary Air
Maximum
Primary Air
BUILDING A FIRE
Air Control
The air control lever is located directly below the ash
lip of the stove. Sliding this lever allows you to vary the
amount of air to the re, creating a range of heat outputs.
The lowest heat output setting is to the left, and the high-
est is to the right. The notches are provided as a reference
for your comfortable heat settings. Do not, under any
circumstances, alter the conguration or operation of
the air control lever.
For low burn, slide the air control to the left. For
medium burns, use notches 4,5 & 6. Maximum heat is
attained with the air control all the way to the right. Do
not burn the stove continuously at the maximum setting.
If maximum heat is required day after day, the stove is
too small for the area you are trying to heat.
If your wood is not seasoned long enough or is high
in moisture content, you may need to adjust the primary
air 1 or 2 notches higher to sustain a low burn rate with
the cleanest possible exhaust.
Building and Maintaining the Fire
Donotusechemicalsoruids
tostartthere.
Never use gasoline, gasoline-type lantern fuel,
kerosene, charcoal lighter uid, or similar liquids to
start or “freshen up” a re in this heater. Keep all such
liquids well away from the heater while it is in use.
Building a Fire
Begin with the bypass damper open, and the air
control lever at the maximum setting, all the way to the
right. Be sure the ash pan door is closed and latched.
Start with a bed of crumpled paper and kindling sized
about nger width; place several 1" - 2" (25mm - 50mm)
split pieces ofdrywood on top of the kindling,followedby
a few 2" - 3" (50 mm - 80 mm) split pieces. Lay the wood
in a crossed pattern to allow maximum air ow. Ignite
the paper and close the loading door(s). Allow this start-
up re to burn for a few minutes, keeping the bypass
damper open. Add about ve more pieces of wood in
the 2 to 3 inch (50 - 80mm) size range, making sure
that the fuel bed is all the way across the rebox and
staggered to allow airow. Close the door and allow
this loading to burn a few minutes.
Add increasingly larger pieces of wood to the re
until you have a thick bed of hot embers, approximately
2 to 3 inches deep at the back of the grate and at least
an inch deep at the front. Youmusthavethischar-
coal bed established before you close the bypass
damper.
Providing you have the charcoal bed described
above, close the bypass damper by pulling the handle
toward the front of the stove. This will begin the highly
efcient mode of operation where the exhaust gases get
re-burned in the secondary combustion package. If you
cannot achieve a charcoal bed within the rst 15 to 20
minutes, your wood is likely too wet, and you may need
to burn the re longer and/or hotter to compensate for
the extra energy needed to drive out the moisture.
If, after ve minutes of burning with the damper
closed, smoke is visible coming from the chimney,
you probably do not have the proper coal bed. Open
the bypass damper and continue with the process until
a signicant coal bed is formed.

Harman Oakwood
10
Always wear gloves when
operating the stove. OPERATION Do not burn wet wood!
CAUTION
Thestoveishotwhileinoperation.Keepchil-
dren,clothingandfurnitureaway.Contact
maycauseskinburns.
Neverleavethestoveunattendedifeithertheash
orloaddoorisopen.Overringmayresult.
RiskofExcessiveTemperatures.KeepAshDoor
ClosedDuringFiringoftheHeater.
BUILDING A FIRE
Always remember to open the bypass damper when
you are loading, this allows the exhaust gases to pass
directly into the ue outlet and reduces the chance of
smoke spillage into the room.
Reloading: Once you have prepared and maintained
a thick charcoal bed, and the secondary combustion is
established, you should be able to reload the stove at
any time by simply opening the bypass damper, then
the load door, adding fuel and closing the door then
the damper. This depends on coal bed size, load size
and moisture content of fuel.
RemovingAshes: Before reloading, empty the ash
pan (remember to close the ash door while emptying
the pan). The ashes should be the coolest at this time.
Remove ashes from the re chamber periodically by
raking a poker across the bottom grates.
Excessive ash buildup can prevent proper venting
of exhaust gases. Do not allow the ash pan to over-ll.
Ash buildup between the ash pan and the bottom of
the grate can cause the grate to overheat and wear out
prematurely.
The Oakwood was designed to provide access to the
ash pan without the need for opening the main door.
Before opening the ash door and removing the ash pan,
open the bypass damper. Wearing heavy protective
gloves, open the ash door and remove the ash pan by
pulling it forward by the handle. Close the ash door
and damper bypass before taking the ashes outside for
safe disposal.
Ashes should be placed in a metal container with a
tight tting lid. The closed container of ashes should
be placed on a noncombustible oor or on the ground,
well away from all combustible materials, pending
nal disposal. If the ashes are disposed of by burial
in soil or otherwise locally dispersed, they should be
retained in the closed container until all cinders have
thoroughly cooled.
Never use the ash disposal container for other trash.
Wood ash can be added to your garden or compost.
Overring
Avoid overring your stove. Overring is a poten-
tially hazardous situation which can lead to overheat-
ing of combustible materials nearby, damage to the
stove, and in extreme cases, cause a re. Overring is
caused by: 1. Too much air owing through the stove
too quickly. 2. You may have positioned the primary
air control lever too far to the right. 3. Inadvertently
leaving the damper open or 4. Not keeping up with
routine maintenance, such as checking door gaskets
for wear.
Overring results in excessive fuel consumption,
and may cause parts of the stove or chimney connector
to glow red. If you notice signs of overring, reduce
the air supply to the re, and review the Maintenance
section in this manual.
In the event of a chimney re, call your local re
department; make sure everyone is safely out of the
house. Reduce the air intake of the stove as much as
possible using the air control lever; close the bypass
damper to further restrict air ow. Do not throw water
on the re; this can cause stove damage and create an
even more dangerous situation. Have your chimney
professionally cleaned and inspected before resuming
burning in your stove.
As you begin to operate your stove at higher tem-
peratures, you will notice a “hot” or unpleasant smell;
this is just the paint going through the curing process,
and will disappear after a few res.

Harman Oakwood 11
FloorProtectionRequirements
The Oakwood must be installed on a non-combustible
oor or a non-combustible oor protector. Floor protection,
when not using the optional bottom heat shield, must be
a minimum 3/4" (19mm) thickness of material having an
insulating value equal to or better than 0.84k/in. (The lower
the k value, the better the protection.)
Another method for calculating oor protection is in R
value. This requirement would be for an R value of 0.89 or
higher. (The higher the R value, the better the protection).
In all installations, the area under and around the stove
must be protected from falling ash and live coals. The area
under a horizontal run of chimney connector must also be
protected, extending two (2) inches beyond the measurement
of the horizontal connector.
Further guidelines for oor protection are as follows:
In the U.S. the oor protector must be completely under
the stove, and extending 16" in front of the door opening,
8" to each side and 8" to the back.
In Canada, the oor protection must extend 18" (457mm)
in front of the door opening, 8" (203mm) to each side and
extend to the wall behind the stove.
Clearances
Clearance is the empty space required between the stove
or chimney connector and the nearest combustible surface or
object, such as walls, ceilings, oors, or furniture. Clearance
distances may only be reduced by using methods approved
by either the CAN/CSA B365 standard (Canada) or NFPA
211 (U.S.) Contact your building authority for information
if you are interested in reducing clearance distances other
than those presented here.
ParallelversusCornerInstallations
A parallel installation is one in which the back and sides
of the stove are parallel to the walls behind and to the side
of the stove. A corner installation is one in which the back
of the stove is positioned diagonally across a corner of the
room. Each installation requires its own set of clearances.
INSTALLATION
For parallel installations, the required clearance dis-
tances from the stove are: (see next pages for more details,
including the use of double walled pipe and optional heat
shields)
1) to the side wall, 26" (661 mm);
2) to the back wall, 28" (712 mm).
3) From the ue connector to the wall, 33" (839mm)
4) Horizontal pipe to the ceiling, 15"(381 mm).
NOTE: For a vertical chimney connector in a parallel
installation the distance of the connector to the side wall must
be 32"(813 mm), due to the required side clearance of the
stove itself. Fireplace installations must meet these same
clearance requirements; specically follow these guidelines
for mantel and trim clearances.
For corner installations, the clearance distances from the
stove are 24"(609 mm) from each corner of the stove mea-
sured straight back to the nearest combustible material, and
32" (813 mm) from the chimney connector to the walls.
From the front of the stove, clearance to combustible
materials such as furniture, curtains, fuel, etc., is: 48"(1220
mm) in the U.S. and 60"(1524 mm) in Canada.

12 Harman Oakwood
INSTALLATION/CLEARANCES
See NFPA 211 for more installation clearance reductions when using USM wall protection, etc.
21" 25"

Harman Oakwood 13
INSTALLATION/CLEARANCES
See NFPA 211 for more installation clearance reductions when using USM wall protection, etc.

14 Harman Oakwood
INSTALLATION/CLEARANCES
See NFPA 211 for more installation clearance reductions when using USM wall protection, etc.

Harman Oakwood 15
INSTALLATION/CLEARANCES
FireplaceInsertInstallation-RearFlue-6"SingleWallPipe
InstallinginfrontofareplacewithMantel
2.75"
(70mm)
22"
16"
Non-
Combustible
replace
2.75"
Non-
Combustible
replace
Mantel: extends over
3/4" from the wall.
Trim: extends less than
3/4" from the wall.
NOTICE:Notforuseinfactorybuiltreplaceswith
hearthweightlimitations.
The Oakwood should not be installed into a factory
built replace unless the hearth area is designed to
take the maximum weight of the stove. The Oakwood,
loaded with wood weighs approximately 500 pounds
(250kg).
If the replace oor can hold the 500 lb. (250 kg)
Oakwood, the stove should only be placed into the re-
place opening to the point that operation of the damper
bypass control and the top load door operation is not
compromised or unsafe. (See above illustration.)
Side Wall
Combustible
Material
37"(94cm)
22"(56cm)
26"
(66cm) 16"
(40cm)

16 Harman Oakwood
ChimneyConnectorsandChimneys
Draft
Draft is widely misunderstood. It is important that you,
the stove operator, realize that draft is a variable effect, not
a given quantity. Stoves and chimneys do not have draft,
yet draft is the key to your stove’s performance.
Draft is a force, produced by an operating stove and
the chimney to which it is attached. It is created by hot
gases rising up the chimney, creating a pressure difference
between the inside of your home and the outside air. It
continually moves fresh combustion air into the stove, and
hot exhaust gases out of the stove; without this constant
ow, the re will go out.
Other factors, such as barometric pressure, winds, the
airtightness of the home, the total inside chimney volume,
chimney height and the presence of venting devices such
as exhaust fans also play a role in maintaining an adequate
draft. Low barometric pressures, super insulated homes
and exhaust fans can reduce draft; winds can play havoc
with draft; and too large or too small a chimney volume
can cause reduced draft due to the excessive cooling
or not enough room to vent exhaust gases. Introducing
outside air directly to the stove may help remedy a low
draft problem. Some signs of inadequate draft are smok-
ing, odor, difculty in maintaining the re, and low heat
output. Overdraft can be caused by a very tall chimney
even if it is the recommended size, and can cause overr-
ing of your stove. Signs of an overdraft include rapid fuel
consumption, inability to slow the re, and parts of the
stove or chimney connector glowing red. It is important
that you follow the chimney guidelines in this manual,
including size, type, and height to avoid draft problems.
When installed and operated according to this manual,
the Oakwood will produce enough hot gases to keep
the chimney warm so that adequate draft is maintained
throughout the burn cycle.
ChimneyConnectors
In general, following these guidelines will ensure
compliance with all national and provincial codes; prior to
beginning your installation, check with your local build-
ing code ofcial to check on additional local regulations
which may inuence the design and placement of your
venting system.
The Harman Oakwood may be installed with a mini-
mum (.6 mm) 24 gauge chimney connector pipe. The size
of the connector should correspond to the size of the ue
collar opening. Do not use makeshift compromises. No
part of the chimney connector may pass through an attic
or roof space, closet or other concealed space, or through
a oor or ceiling. Whenever possible, avoid passing the
connector through a combustible wall; if you must, use
an approved wall pass-through, described later in this
section.
Assemble the connector beginning at the ue collar,
with the crimped ends pointing towards the stove (to
keep debris and creosote akes inside the system). Each
joint, including the one to the stove’s ue collar and the
one to the chimney itself should be secured with at least
three sheet metal screws. Screws may be a maximum of
3 inches apart. A 1-1/4" (30 mm) overlap is required at
each joint, including the ue collar attachment. No more
than two 90 degree elbows should be used, and the total
length of connector should not exceed 10 feet (3 m). All
horizontal runs of connector must have a minimum up-
ward slope of 1/4"(6 mm) per foot (20 mm per meter).
Chimney connector should correspond to the size of the
ue collar opening. Do not use makeshift compromises.
No part of the chimney connector may pass through an
attic or roof cemented in place with refractory cement.
WallPass-throughs
Occasionally it is necessary to pass the chimney con-
nector through a combustible wall to reach the chimney.
Depending on your local building codes, and the pertinent
provincial or national codes, there are several choices
for accomplishing this safely. Before beginning your
installation, contact local ofcials, and also the chimney
connector and chimney manufacturer for specic require-
ments.
Canada. Three methods are approved by the Canadian
Standards Association. The diagram on the next page
shows one method requiring an 18"(450 mm) air space
between the connector and the wall. It allows use of
one or two covers as described in the diagram. The two
other methods are described in detail in the current issue
of CAN/CSA B365, the national standard.
United States In the U.S., the national code is NFPA
211. While many localities adopt this standard, be sure
to check with local authorities before beginning your
installation.
The NFPA (National Fire Protection Agency) permits
four methods for passing through a combustible wall. A
commonly used method to pass through a wall directly to
a masonry chimney is to clear a minimum 12"(300 mm)
around the entire chimney connector, and ll it with brick
masonry which is at least 3.5"(90 mm) thick. A reclay
liner, minimum 3/8" (9 mm) wall thickness must run
through the brick wall to the chimney liner (but not be-
yond the inner surface of the liner). It must be cemented
in place with refractory cement. This method is illustrated
on the next page. For details on the other three options,
refer to the most recent edition of the NFPA 211 code.
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Harman Oakwood 17
The Chimney
The Oakwood must be installed into a chimney ap-
proved for use with solid-fuel appliances. In the U.S.,
the Oakwood must be connected to (1) a prefabricated
chimney complying with the requirements for Type HT
chimneys in the Standard for Chimneys, Factory-Built,
Residential Type and Building Heating Appliances, UL
103, or (2) a code-approved masonry chimney with a tile
ue liner. In Canada, the Oakwood is listed for use with
prefabricated chimneys tested and listed to the high tem-
perature (650 degrees C) chimney standard, ULC S-629,
or with a code approved masonry chimney.
The minimum recommended height for any chimney
is 16 ft (4.8 m) above the ue collar height. For non-
mobile home installations, a round ue (either masonry
or approved prefabricated), of either 6" (150 mm), 7"
(180 mm) or 8" (200 mm) may be used. For square or
rectangular masonry chimneys, nominal sizes of 8" x 8"
or 8"x 12" (200 mm x 200 mm, 200 mm x 300 mm) may
be used.
Codes require that solid-fuel chimneys extend 3 ft (0.9
m) above the point at which they exit from the roof. The
chimney must extend 2 ft (6 m) above the highest point
within a 10 ft (3 m) radius of the top of the chimney. Thus,
the 2 foot, 3 foot, 10 foot rule; "The top of the chimney
must be a minimum of 3 feet above where it exits the roof,
and 2 feet higher than anything within 10feet."
Do not connect this unit to a chimney ue
servicinganotherappliance.
NOTE:Therestrictionofnotventingmorethan
oneappliancetothesameueappliestotheU.S.spe-
cically.Whileitisnotrecommendedthatyouuse
the same chimney for more than one appliance, in
Canadacertainexceptionsmaybemade.Besureto
contactyourbuildingcodeinspectionofcialtoseeif
thisoptionisallowedinyourarea,andtondoutthe
specicrequirementsforsuchaninstallation.
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18 Harman Oakwood
airtight, noncombustible seal, like a steel plate (remov-
able for inspection); this also satises the requirement
that no room air must be allowed to enter the chimney.
Kaowool, mineral wool or equivalent non-combustible
insulation may be installed on top of the plate to help
minimize condensation. (Install a rain cap on the top of
the chimney).
InstallingtoaPrefabricatedChimney
When venting your Oakwood using a prefabricated
chimney, be sure to contact local building code authori-
ties, and to follow the manufacturer’s instructions exactly.
Use only the manufacturer’s parts; do not use makeshift
installation techniques. All prefabricated chimneys must
be tested to either the U.S. or Canadian high-temperature
standards, UL 103 or ULC-629.
ExistingMasonryChimneys
If you plan on using an existing masonry chimney,
have it thoroughly inspected and cleaned. Any faults
which make the chimney unsafe and unusable must be
repaired prior to use. These can include improper height,
structural defects, blockages, inadequate clearance to
combustibles, unsealed openings into other rooms of the
house, signs of creosote or smoke leakage, a loose or
absent clean-out door, or absence of a liner.
Do not connect to any air distribution
ductorsystem
VentingtoaMasonryChimney
When connecting to a masonry chimney, several
provisions are standard. First, whether the chimney con-
nector is vented to the chimney through a thimble or a
breech pipe, neither must pass beyond the inner surface
of the chimney liner, and both must be rmly cemented
in place with refractory cement. (A thimble is a masonry
pipe which is inserted through the chimney wall, and is
frequently the preferred method; a breech pipe is a piece
of steel pipe used the same way.) In Canada, a breech pipe
has ridges or protrusions to lock it rmly into the refrac-
tory cement. In either case, the chimney connector vents
to the chimney through the thimble or breech pipe.
Using a thimble, the connector slides completely inside
the masonry to the inner edge of the ue liner, and may
be easily removed for chimney and connector inspection.
A breech pipe must extend at least 2" (50 mm) into the
room, so the connector can be attached with sheetmetal
screws.
VentingtoaMasonryFireplaceChimney
In some situations, a code compliant chimney originally
used for a masonry replace may be used to install your
Oakwood. In addition to the requirements found in the
previous paragraphs, it is important to be aware that all
clearances must be met, including those from the chimney
connector to combustibles — 18" (360 mm) to sides and
18" (450 mm) to ceiling. Do not forget to include oor
protection in your plans. (See Clearances and Floor
Protection in this section.) Since many replaces have
exposed wooden mantels and trim, pay special attention
to the clearances necessary to these materials.
If your replace chimney is behind a combustible wall,
you must use an approved wall pass-through system to
gain access to the masonry chimney. The chimney con-
nector must enter the chimney at a place where it is lined,
and the replace must be made inoperable. For example,
you might remove the damper, replacing it with a secure,
VENTING

Harman Oakwood 19
Caution:Alwayswearre-resistantgloves
tooperatethestove.Theaircontrolishot
whileinoperation.
Warning:Donotinstallinsleepingroom.
TheHarmanOakwoodwastestedwithfueldoor
openandclosed.Keepdoorclosedfornormaloperat-
ingconditions.
Ifyouoperatewithdoorsopen,opentheby-pass
andputascreenovertheopening.
Do not burn any fuel other than wood, such as charcoal,
which can cause increased carbon monoxide produc-
tion or overring. Never use highly volatile substances
in your stove, such as gasoline, which could cause an
explosion.
When solid fuels are burned completely, they pro-
duce water and carbon dioxide. However, in long slow
burns, a substantial amount of carbon monoxide may
be produced. If allowed to build up, carbon monoxide
(which is odorless) can prove fatally poisonous. Proper
ventilation and draft will prevent this from happening.
If you smell smoke, turn up the air control lever setting,
and thoroughly ventilate your dwelling. During future
burns, be careful not to overload the stove with fuel, so
you will not be tempted to constantly operate at a low air
control setting.
Other causes of poor ventilation or draft are icing,
exhaust fans, a blocked outside air inlet, and room air
starvation. If your stove is sluggish and you get occa-
sional odor, check these possibilities and increase the air
ow in your home.
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20 Harman Oakwood
VENTING
RoofFlashing
Chimney Cap
Storm Collar
Chimney
Sections
Minimum Air Space
withChimneyListing
Chimney Con-
nector
Chimney
Support
StandardCeilingInstallationwith
Factory Built Chimney
Chimney Cap
Factory-Built
Metal Chimney
Sealed Storm Collar
FinishingCol-
lar
Chimney
Connector
CathedralCeilingInstallationwith
Factory Built Chimney
RoofFlashing
Roof Radiation
Shield
Roof
Radiation
Shield
Cathedral Style
Chimney Support
Attic
Radiation
Shield