Osburn 2400 User manual

READ AND KEEP THIS MANUAL FOR REFERENCE
45111A
OWNER`S MANUAL
2400 MODEL INSERT
US ENVIRONMENTAL PROTECTION
AGENCY PHASE II CERTIFIED
WOOD INSERT
Verified and tested following
ULC S627 and UL 1482 Standards
by:
Manufactured by : STOVE BUILDER INTERNATIONAL INC..
1700, Léon-Harmel, Québec (Québec) G1N 4R9
Tel : (418 ) 527-3060
Fax : (418 ) 527-4311
www.osburn-mfg.com

/1
INTRODUCTION
SBI INC., one of the most important wood stove and fireplace manufacturers in Canada,
congratulates you on your purchase and wishes to help you get maximum satisfaction from your
wood stove. In the pages that follow, we will give you advice on wood heating and controlled
combustion as well astechnical specifications regardinginstallation, operation andmaintenance of
the model you have chosen.
The instructions pertaining to the installation of your wood stove comply with ULC-S627 and UL-
1482 standards.
Read this entire manual before you install and use your new stove. If this stove is not
properly installed, a house fire may result. To reduce the risk of fire, follow the installation
instructions. Failure to follow instructions may result in property damage, bodily injury, or
even death.
Consult your municipal building department or fire officials about restrictions and
installations requirements in your area and the need to obtain a permit.
Keep this instructions manual for future references.
CAUTIONS:
•HOTWHILEINOPERATION.KEEPCHILDREN,CLOTHING ANDFURNITUREAWAY.CONTACTMAYCAUSESKIN
BURNS.
•DO NOT USE CHEMICALS OR FLUIDS TO IGNITE THE FIRE.
•DO NOT LEAVE THE STOVE UNATTENDED WHEN THE DOOR IS SLIGHTLY OPENED.
•DO NOT BURN WASTES,FLAMMABLE FLUID SUCH AS GASOLINE,NAPHTHA OR MOTOR OIL.
•DO NOT CONNECT TO ANY AIR DISTRIBUTION DUCT OR SYSTEM.
•ALWAYS CLOSE THE DOOR AFTER THE IGNITION.
This heating unit must serve as a supplementary heat source. An alternative heat source should be available in the home if needed.
The manufacturer cannot be responsible for additional heating costs associated with the use of an alternative heat source.
It is highly recommended that the user buys this product from a retailer who can provide installation and maintenance advices.
REGISTER YOU WARRANTY ONLINE
To receive full warranty coverage, you will
need to show evidence of the date you
purchased your stove. Keep your sales
invoice. We also recommend that you register
your warranty online at
www.osburn-mfg.com
Registering your warranty online will help us
track rapidly the information we need on your
insert.

/2
TABLE OF CONTENTS
1.0 PRE-INSTALLATION REQUIREMENTS........................................................................................ 3
1.1MASONRY FIREPLACE REQUIREMENTS........................................................................................... 3
1.2 VENTING REQUIREMENTS............................................................................................................... 3
1.3 DOOR OVERLAY INSTALLATION ...................................................................................................... 5
2.0INSTALLATION............................................................................................................................. 6
2.1SUITABLE FIREPLACE DIMENSIONS................................................................................................. 7
2.2OUTSIDE COMBUSTION AIR ............................................................................................................. 7
2.2.1 HEARTH REQUIREMENTS.................................................................................................................... 7
2.3SAFETY INFORMATION.................................................................................................................... 7
2.4INSTALLATION INSTRUCTIONS..................................................................................................... 8
2.5POSITIONING THE UNIT.................................................................................................................... 8
2.6FACEPLATE INSTALLATION ............................................................................................................. 9
3.0OPERATION ................................................................................................................................ 14
3.1SAFETY INFORMATION.................................................................................................................. 14
3.2 FUEL ............................................................................................................................................. 15
3.2.1SIMPLE WOOD MOISTURE TEST.................................................................................................... 16
3.3NOTES ABOUT FIRST FIRING......................................................................................................... 16
3.4LIGHTING A FIRE ........................................................................................................................... 16
3.5MAINTAINING THE FIRE................................................................................................................ 17
3.6FAN OPERATION ........................................................................................................................... 18
4.0MAINTENANCE........................................................................................................................... 18
4.1CARE AND CLEANING................................................................................................................... 18
4.2ASH REMOVAL.............................................................................................................................. 19
4.3CHIMNEY CLEANING..................................................................................................................... 19
4.5SECONDARY AIR TUBE REPLACEMENT (SEE FIGURE 9) ................................................................ 20
5.0TROUBLESHOOTING................................................................................................................ 21
6.0SPECIFICATIONS........................................................................................................................ 22
OSBURN LIMITED LIFETIME WARRANTY.................................................................................... 23

/3
1.0 PRE-INSTALLATION REQUIREMENTS
1.1 Masonry Fireplace Requirements
Themasonryfireplacemust meettheminimumcoderequirements,orNFPA 211ortheequivalentfora
safe installation. Contact your local Building Inspector for requirements in your area. An inspection of
the fireplace should include the following:
1. CONDITION OF THE FIREPLACE AND CHIMNEY:
Examine the masonry fireplace and chimney prior to installation, to determine that they are free
fromcracks,loosemortar,creosote deposits,blockage, orother signsofdeterioration. Ifevidence
of deterioration is noted, the fireplace or chimney should be upgraded prior to installation.
2. CHIMNEY CAPS:
Meshtypechimney capsmust haveprovisionforregularcleaning,or themeshshouldberemoved
to eliminate the potential of plugging.
3. LINER:
The chimney must have an acceptable 6" (152 mm) stainless steel chimney liner installed.
NOTE: The 2400 Insert is not approved for use with a positive flue connector into a masonry
flue.
4. ADJACENT COMBUSTIBLES:
The fireplace should be inspected to make sure that there is adequate clearance to combustibles,
both exposed combustibles to the top, side, and front as well as concealed combustibles, in the
chimneyandmantelarea. Yourlocal inspectorshouldhaveinformationonwhetherolderfireplaces
are of adequate construction.
5. OPENING SIZE:
Refer to “Suitable Fireplace Dimensions” (Sec. 2.2) for suitable size fireplace openings.
NOTE: A METAL TAG IS PROVIDED AND IS TO BE FASTENED TO THE BACK WALL OF THE
FIREPLACE, IF THE FIREPLACE HAS BEEN MODIFIED TO ACCOMMODATE THE
INSERT.
1.2 Venting Requirements
Theflue isa criticalcomponent toasatisfactory installation. Yourinsertwill attainitsbest performance
if installed with a flue that generates its own draft. The minimum venting requirement will be the
installationofa flueconnectorfrom theinsertinto thefirsttileofthechimney(see Figure2.3). If youare
using a masonry chimney, it is important that it be built in compliance with the specifications of the
National Building Code or other applicable standard having jurisdiction. It must be lined with fire clay
bricks, metal or clay tiles sealed together with fire cement (round flues are the most efficient). Ideally,
theinterior diameterof themasonry chimneyshouldbeidentical tothe insertsmokeexhaust. Youmay
also run a stainless steel liner inside the masonry chimney. A continuous 6" (152mm) stainless steel
liner from the top of the chimney to the insert’s smoke exhaust (see Figure 2.2) is the optimum system
and will provide the best performance, aswell as compensatefor poordraftsituations caused bylarge

/4
cross-sectional chimneys. The insert will not work without a positive seal in the chimney.
Chimneysconstructedoutsideofthe home,onanexteriorwall,should beavoidedifpossible,especially
in colder climates. Outside chimneys may not draw as well and may downdraft due to the difficulty in
heating them up to operating temperature. Cooler chimneys will result in increased creosoting, less
draft, and poorer performance. Draft is proportional to overall chimney height as well as to stack
temperature. Draftcanbe increasedbyincreasing chimneyheight,and byreducingheatloss fromthe
chimney through an insulated liner.
Ensure that all joints in the flue systems are tightly sealed, since any leaks will result in reduced
performance as well as a possible safety hazard. Using a fire screen at the extremity of the chimney
requires regular inspection in order to insure that it is not obstructed thus blocking the draught, and it
should be cleaned when necessary.
Do not connect this unit to a chimney flue serving another appliance.
This heating unit must serve as a supplementary heat source. An alternate heat source should be
available in the home if needed. The manufacturer cannot be responsible for additional heating costs
associated with the use of an alternative heat source.
It is recommended that the user buys this product from a retailer who can provide installation and
maintenance advices.

/5
1.3 Door overlay installation
In order to complete the assembly of your Osburn 2400 wood insert, you need to install the door overlay.
See figure 1 below for installation instructions :
1- Position the overlay on the door frame and fix it in place from behind using the 4 screws.
Note: It is not necessary to remove the glass or any other component to install the overlay.

/6
2.0 INSTALLATION
Clearances To Combustibles (Measured From Insert Body)
MEASURED
FROM WITHOUT MANTLE HEAT DEFLECTOR WITH MANTLE HEAT DEFLECTOR
Side Wall (A) 14" (356mm) 14" (356mm)
Side Facing (B) 8" (203mm) 8" (203mm)
Top Facing (C) 20.5" (521mm) 13" (330mm)
Mantle (D) 25.5" (648mm) 16" (406mm)
Table 2.1
CLEARANCES
Figure 1
Note: Ifsidefacing protrudesmorethan 1.5”(38mm)in frontoffaceoffireplace, thenuse sidewallclearance.

/7
2.1 Suitable Fireplace Dimensions
MEASUREMENT
FOR
MINIMUM
MAXIMUM
STANDARD
FACEPLATE
MAXIMUM
LARGE
FACEPLATE
Opening Height (F) 22.75" (578mm) 29" (737mm) 32" (813mm)
Opening Width (G) 32" (813mm) 44" (1118mm) 50" (1270mm)
Opening Depth (H) 16.25" (413mm)
Table 2.2
2.2 Outside combustion air
Provision has been made on the 2400 Insert to accept fresh air for combustion purposes. A 4"
(102mm)hole hasbeen punched-outon thebottomairjacket,andthe holecenterlineis located 11"
(279mm) forward of the rear air jacket and 6" (152mm) in from the right hand air jacket.
2.2.1 Hearth Requirements
HEARTH EXTENSION:
Verify that there is a non-combustible hearth extendingat least16" (405mm) infront ofthefireplace
and at least 8" (203 mm) to the side of the fireplace for a fireplace having an opening less than 6 ft²
(0.55m²); or anon-combustible hearthextending atleast 20"(510 mm)infront andat least12" (305
mm) to the sides for a fireplace having an opening of 6 ft² (0.55 m²) or larger. Fireplaces without
this hearth extension will not meet the minimum requirements,and willrequire additionalprotection.
2.3 Safety Information
NOTE: This appliance is not recommended for use in a home if an occupant has any
respiratory or any other related problems.
1. It is important to follow the installation and operation instructions. An improperly installed or
operated insert could result in a safety hazard or fire, or damage to the unit, which would not be
coveredby the warranty. Contactlocal buildingor fireofficials aboutrestrictions andinstallation
requirements in your area. You shouldbe familiarwiththe installationandbe surethat thework
is done in accordance with this manual.
WARNING: DO NOT INSTALL THIS INSERT IN A SLEEPING ROOM.
2. Where lesser clearances are desired, consult your local authority as regulations may vary
regarding the use of clearance reducing devices. Listed wall and floor shields are available to
reduce clearances, and most building codes provide information on materials which may be
used to reduce clearances (see Figure 1).
3. Maintain at least the minimum clearances to combustible material as specified in this manual.
Clearances are measured to the nearest part of the insert (i.e. top edge on theside). Clearances
to any combustibles, when measured directly out from the front, must be a minimum of 48"
(1219mm).

/8
4. Maintain at least the minimum floor protection for combustible floor materials as specified in this
manual. Floor protection to the front is to be measured from the fuel loading door opening.
5. Osburn recommends that you install a listed smoke detector or alarm in your home. Normal
operation of the insert will have no effect on the detector or alarm.
6. The insert is to be connected only to a lined masonry chimney and masonry fireplace conforming
tobuilding codesfor usewithsolid fuel. Donot removebricksor mortarfromthe existingfireplace
when installing the insert.
7. Minimum chimney size is 6" (152mm) diameter. Maintain a 15' (4.5m) minimum overall height
measured from the base of the appliance. Chimneys should be inspected to check for
deterioration and to determine if they meet the minimum requirements, and be upgraded if
necessary. Thechimney mustextend atleast3'(914mm)above theroof andat least2'(610mm)
above the highest point within an area of 10' (3m) of the chimney.
8. Donotusemakeshiftcompromises duringinstallation,astheycouldcreatea safetyhazardandafirecouldresult.
9. DONOT CONNECT THIS APPLIANCE TOTHECHIMNEY OR FLUESERVING ANOTHERAPPLIANCE.
2.4 Installation Instructions
Inspect the fireplace according to the safety information and fireplace requirements and have
it cleaned and/or upgraded as necessary.
If the installation of the unit renders the existing damper control inaccessible, it will be
necessary to either secure the damper wide open, or remove it entirely. An inaccessible
damper, which may fall, shut later could cause smoke to enter the room. This would be a
nuisance as well as a potential health hazard.
Figure 2
2.5 Positioning the unit
The more extended the insert, the greater the heat transfer to the room. When installed as an
extended insert, the front edge of the air jacket will be installed flush with the fireplace facing.

/9
Otherwise the unit can be moved back as much as 3.5" (90 mm) or any position in between. The
positionchosenwill dependonyour ownpreferencefrom mostinstallations(where lintelisless than6"
(152 mm) and the depth is greater than 12.5" (320 mm)). See Figure 2.2 and the table below.
MAXIMUM
EXTENDED
I J L M N O P AIR JACKET
INCHES 8 5/16 6 1/2 22 1/2 15 7/8 8 7/8 7 25 Flush with
facing
MILLIMETRES 211 165 571 403 225 178
635
MINIMUM
EXTENDED
I J L M N O P AIR JACKET
INCHES 11 7/8 10 23 19 1/2 5 1/4 3 7/16 21 7/16 Back from
facing 3 3/8"
MILLIMETRES 302 254 584 495 133 87
545
If lag-bolts and anchors are to used to secure the insert, the hole locations should be marked with
the unit in place. Remove the unit and locate the anchors.
2.6 Faceplate installation
1. Remove the faceplate panels from their box and assemble according to these faceplate
instructions.
2. Remove the slide from within the air jacket.
3. Placethefaceplate face downon aflat, nonabrasivesurface (seeFigure3) sothat thesides are
a bit towards the middle.
Figure 3
4. Place the slide onto the faceplate so that the bends of the faceplate pieces go inside of the
slide.
2400 INSERT FACEPLATE BOLT ASSEMBLY:
Contents: 8 - 1/4" x 1" (6.25 mm x 25 mm) carriage bolts

/10
8 - 1/4" (6.25 mm) flat washers
8 - 1/4" (6.25 mm) hex nuts
5. Line up the holes by pushing the sides out and install (smooth heads inside) all the bolts
loosely. Line up the edge of the faceplate top and side, tighten the two bolts joining them, and
then tighten the side bolts. Tighten the bolts on the other side in the same manner (see Figure
4).
Figure 4
6. Installation on Faceplates:
Attach the mitered corners of the trim together using the corner brackets. Slide the assembled
trim over the edge of the faceplate. See Figures 5 & 6.
7. Attach the left and right side to the top with corner brackets supplied. Slip the trim over the
faceplate and snap the eight trim retainers in place (see Figure 5).
Figure 5

/11
Back view of faceplate
Figure 6
8. Lift the insert into the fireplace. Square the insert to the face of the fireplace by adjusting the
leveling legs on the sides at the rear of the insert. Check that the throat connector is in line.
9. If there is space to push the connector down from above, do so. Reach in through the insert
and pull the throat connector down into place. If you are securing the connector to the flue
collar with the screw, do that now.
10. Push the air control (A) in, all the way. Slide the adjustable faceplate sleeve back into its
original location until the faceplate fits tightly against the fireplace facing. See Figure 7. One
7/16" (11mm) open end wrench should be used to turn the nut (B), located above the cook top
in the centre, up so that it securely fastens the adjustable faceplate sleeve to the top air jacket.
Take the air control slider spring handle (C) from the firebox and turn it onto the 1/4" diameter
(6mm) air control rod (A).
A
C
B
D
Figure 7
Lift the insert into the fireplace. Square the insert to the face of the fireplace by adjusting the
leveling legs on the sides at the rear of the insert. Check that the throat connector is in line.
If there is space to push the connector down from above, do so. Reach in through the insert
andpull the throatconnector downinto place. Ifyou aresecuring theconnector tothefluecollar
with a screw, do that now.

/12
2.7 Baffle & brick installation
CAUTION: Operation of your Osburn insert without the baffle may cause unsafe and hazardous
temperature conditions and will void the warranty. NOTE: Before installing the firebrick, check to
ensure that none are broken or damaged in any way. If so, have the damaged ones replaced. Check the
firebrick for damage at least annually and replace any broken or damaged ones with new ones. Inspection and
cleaning of the chimney is facilitated by the removable baffle.
The stove is shipped with all firebricks in place except for the top 3 at the rear of the firebox and the top sides
(2 per side, 1 full and 1 partial). The balance of the loose bricks are for the baffle.
Install three top rear firebricks. The two full 9" (229 mm) bricks are on either side and are to be installed first.
Then place the 7" (178 mm) brick in the center . Install the full 9" (229 mm) bricks on each side toward the
rear of the firebox. After the 9" (229 mm) bricks are in place, install the partial 5 1/2" (140 mm) bricks on
each side. The firebox bricking procedure will now be complete.
To install the baffle, follow the instructions on the next page. To remove, reverse the procedure:
Figure 7
1- Install the stainless steel brick retainers (A) on the rear centre bricks intersections.
2- Install the first side baffle support (B) on one side of the firebox as shown in figure 7.
3- Put the vermiculite boards on top of the rear secondary air tube. The vermiculite boards must be

/13
placed next to each other (not stacked). Put the insulation blanket on top of the vermiculite
boards as shown in figure 7. Place the insulation weight at the top back center of the insulation
blanket lined up with the flue outlet.
4- Install the second side baffle support (B) on the other side of the firebox.
5- Install the two remaining secondary air tubes and push the baffle assembly towards the back of the
unit.
NOTE: As with all fibrous materials, avoid inhaling any airborne fibers.
Note : Make sure that rear inlet holes are not blocked by the insulation blanket.
Figure 8

/14
3.0 OPERATION
3.1 Safety Information
1. This insert is designed for safe operation WHEN BURNING CORDWOOD ONLY. Altering ormodifying
the unit or the installation without proper authorization will void the certification, warranty, and
safety listing, and may result in a safety hazard.
2. For safety reasons, never leave the unit unattended with the door open or ajar. An open door,
and especially a door partially open or cracked, if left for longer than required for good ignition
can potentially result in unsafe chimney temperatures, and if left unattended, hot embers or
ignited fuel may fall out of the unit. Prolonged door open operation is not necessary provided
the unit has been properly installed and dry kindling is used to start the fire.
3. Do not abuse the unit, either by over firing or by using wood or combustibles with salt content,
or harmful chemicals. Misuse is not covered by warranty.
4. Even though your Osburn has been specifically designed andtested toprevent smokespillage,
always open the door slowly as this will minimize thelikelihood ofsmoke spillageor aback draft
causing flame or smoke to spill into the room.
5. Never use gasoline type lantern fuel, kerosene, solvents, charcoal lighter fluid, or inflammable
liquids to start or "freshen" a fire in the insert. Keep all such liquids well away from the insert
while it is in use.
6. All insert surfaces become very hot during operation. Care is needed, especially with children,
to avoid contacting these surfaces.
7. Do not elevate the fire by means of grates, and irons or other means.
8. Caution: Do Not Over Fire This Heater.Do not burn fuel in the insert at a rate higher than
that which will cause the ember bed level to exceed half the door opening height. If burning hot
fires regularly, purchase an insert top thermometer, and do not exceed 840oF (450oC) as
measured on the Cooktop. If the door handle of the insert becomes excessively hot to the
touch, consider this to be an indication of over firing. Over firing can result in a safety hazard
and can permanently damage the insert and chimney. This damage is not covered by the
warranty.
9. Although the ceramic glass is extremely durable under any normal use, a few precautions are
required. Do not attempt to push logs further into the fire by using the door, as the glass may
break if it is heavily contacted by any solid object.

/15
10. Never operate the insert with the door open, or cracked slightly open, except briefly during the
lighting operation, and during refuelling. Leaving the door open continuously could seriously
overheat the chimney and adjacent combustibles. Do not operate the insert if there is an
abnormal air leakage into the unit, such as through deteriorated gaskets or cracked or broken
glass. Donot operate theinsert without adoor gasket. Leakagecan resultin overheating,or in
very airtight homes, could possibly cause smoke spillage into the room. Smoke may contain
carbon monoxide, which is poisonous, and in sufficient quantities is a health hazard.
11. We recommend that you have a fresh air or make up air supply for the insert. In Canada this is
abuilding code requirement. Ifthis isnot done, itcould causepoor air qualityin thehome, poor
and incomplete combustion, and poor efficiency in the insert.
3.2 Fuel
1. Fuel for the insert must not be stored closer than the required clearances to combustibles and
not in the space required for ash removal.
2. Your Osburn insert is designed to burn CORDWOOD FUEL ONLY. Do not burn coal, charcoal, or
trash in the unit. Highly flammable items such as trash may ignite creosote in the chimney,
resulting in a chimney fire. Never burn salt wood, beachwood, chemically treated wood, or
wood removed from salt water, since the deposits left will deteriorate the firebox. Damage
caused by chemicals or salt is not covered under warranty.
3. Seasoned dense wood is recommended. Wood shouldbe airdried ina coveredventilated area
for six months to a year or more. This reduces the moisture content of the wood, resulting in
better insert performance. Wood species with moisture content of 20% or less are ideal. Dry
seasoned wood can be distinguished from green wood by the checks or cracks in the ends.
4. Wetor green woodwill tendto cause thefire tosmoulder, producinglarge amountsofcreosote.
Creosote build-up could result in a chimney fire. This wood will also prove difficult to keep
burning properly, and fires will tend to go out. Green wood produces very little heat, and
sometimescauses customers tothink thatthe insert doesnot work. Ifyoumust burnwet wood,
use only small amounts mixed with dry wood.
5. Decayed wood or low-density wood has very little energy content or heating value, and will not
burn satisfactorily for long periods of time.
An example of the energy values of some common wood fuels is given in Table 3.1
For recommended wood sizes, refer to the specifications.

/16
Common Heating Values of Cordwood
Hardwoods Million Btu/Cord Softwoods Million Btu/Cord
Birch 23.6 Douglas Fir 20.6
White Oak 28.3 Hemlock 17.1
Alder 17.6 Jack Pine 18.4
Table 3.1
3.2.1 Simple Wood Moisture Test
Addone large pieceof woodto the topof anestablished fire. Ifit startsto burn onthree sideswithin
one minute, it is dry and seasoned and right for burning. If it turns black and starts to burn in three
minutes,it is damp. Ifit turnsblack and doesnot startburning until afterfiveminutes, itis greenand
wet. If it hisses at any time the wood is soaked and will not burn until excess moisture is boiled
away.
3.3 Notes About First Firing
Before firing ensure that the room is well ventilated. Curing the paint is recommended to preserve
the best quality finish. Heating the insert too intensely on the first fire will dull and lighten the colour
on overheated areas, and cause smoke and odour to be emitted into the room. To cure the paint,
the first two fires should be burned for only about twenty minutes each.
Allow the insert to get warm only, but not hot, i.e. 250oF (120oC) as measured by an insert top
thermometer, then allow the insert to cool down. Light a third fire and burn it for about forty minutes
to 450oF (230oC) or less. Once again cool the insert to room temperature, then operate it
according to the following instructions. This extra care will result in a more durable, and uniform
finish.
3.4 Lighting a fire
1. Place enough crumpled balls of newspaper or other paper into the insert to cover the
Bottom of the firebox.
2. Place small dry kindling on the crumpled paper.
3. Place larger dry kindling on top of the small kindling.
4. Open the draft control fully to the right (located on the right side of the faceplate, Figure 3.1)
5. Light a fire at the bottom of the crumpled paper and close the door. If the fire tends to go out,
momentarily hold the door slightly ajar to fan the fire. As soon as the fire catches hold, close the door.

/17
6. Ideally the large kindling should be burned until a thick bed of red embers is obtained. At that
point,add cordwood fueland continueto operate thedraft control wideopen untilthe fire iswell
established. Oncethe fireboxis hot,the draftcontrolcan bepartially closedbymoving theknob
to the left to adjust the intensity of the fire.
Use Table 3.2 to adjust the draft control to the desired burn rate:
Draft Settings
BURN RATE DRAFT SETTINGS
Low & Medium Low Gently push the draft control rod all the way in
Medium Gently pull the draft control rod out to approx.
1/8"
Medium High Gently pull the draft control rod out to approx.
1/2"
High Gently pull the draft control rod all the way out
Table 3.2
Closing the draft control down too soon will lower combustion efficiency, and may result in
creosote build-up in the chimney (which could lead to a future chimney fire).
Caution: The Adjustment Range Should Not Be Altered For Increased Firing For Any Reason.
3.5 Maintaining The Fire
Your Osburn insert will work best if a thick bed of hot embers is maintained in the bottom of the
firebox, and a minimum of two large pieces of seasoned fuel are added. Combustion efficiency is
largely related toestablishing ahot emberbed,and hotfirebox temperatures. Thequicker theinsert
and fuel get up to operating temperature, the better. A small intense fire is preferred to a large
smouldering fire, both to improve combustion efficiency and to reduce the amount of creosote
emitted. The best performance will be achieved by adding relatively small amounts of fuel to a well
established ember bed, and then operating with the air inlet control open long enough to achieve a
hot fire. Cordwood should be placed with air in between individual pieces. Use a poker to make an
air channel in the embers below the wood, this will allow air to flow under the wood for a more
efficient burn.
Extendedburn times canbe accomplishedby first operating the insert on a full loadwiththe airinlet
controls wide open. Once the fire is well established, and the moisture has been driven out of the
wood, reduce the air control to a lower setting. The unit should then burn cleanly without

/18
smoldering.If the firesmolders withoutflame, re-establish ahotter firebefore movingthe aircontrol
to the lower setting. A yellow flame burning in the top of the firebox is a good indication of a clean
efficiently burning fire.
Refuelling technique is important for goodperformance. The bestefficiency and performancefrom
your insert can be achieved by adding partial loads of fuel and allowing them to get up to operating
temperature before adding additional fuel. Adding a large amount of fuel at one time will increase
the time required to get the fuel up to its ignition temperature,and anextendedtime toreach optimal
performance. When refuelling, open the air control or hold the door partially open 1” (25 mm) or
less, long enough (less than 5 minutes) so that the fire has well-established flames. When
refuelling, care is required to ensure that fuel or embers do not fall out of the door opening.
3.6 Fan Operation
Allow the insert to heat up to operating temperature before turning on the fan. Increased airflow
from the fan will remove heat and affect the start-up combustion efficiency. The rocker fan switch
settings are "OFF", "LOW" and "HIGH". Your "OFF" setting is when the rocker switch is in the
center position. The rocker switch ismountedvertically onthe fancasing. To turnthe fanon"LOW",
depress the switch toward the bottom of the insert. To turn the fan on "HIGH", push the switch past
the center "OFF" position and depress the switch in toward the top of the insert.
The fan should be kept clean and dust free. Life of the fan will be shortened if operated in a dust
filled environment, or if the fan is overheated by restricting air supply. Stalling the motor, or over
firing the insert with the fan turned off will also damage the fan. The fan must not be over heated.
4.0 MAINTENANCE
4.1 Care And Cleaning
Clean the insert frequently so that soot, ash and creosote do not accumulate. Do not attempt to
cleanthe insert, glassor doorwhen the unitis hot.Special care must be taken withGold surfacesin
order to maintain the finish at its original brilliance. Do not use an abrasiveglass cleaner, whichwill
scratch the glass or gold finish. Use only a soft clean damp cloth on the door, since some cleaners
may remove the plating or paint.
4.1.1 Glass Cleaning
Under normal operation the stove is designed to keep the glass clean. Glass cleaning may be
required when burning damp wood and/or when burning slow fires. Generally if the glass is not
staying clean then the unit is being under fired. Dirty glassmay beself-cleanedby burninga hotfire
(i.e. dry wood and opened draft controls) for a couple of hours. Good burning techniques will result
in clean glass.

/19
Hand clean the glass only when the fire is out and the insert is cold. A light film can usually be
cleaned with paper towel and water. If heavy cleaning is required, aceramic glasscleaner orpolish
is recommended, and should be rinsed off with water for best results.
4.2 Ash Removal
CAUTION: Ashes can start fires, even after several days of inactivity. Never dispose of ashes in
a combustible container. Remove ashes only when the insert and ashes are cold.
Ashes should be removed from the insert frequently. When ashes are removed, they should be
placed in a metal container with a tightly fitting lid. The closed container of ashes should be placed
on a non-combustible flooror on the ground,well awayfrom allcombustiblematerials, pendingfinal
disposal. Ifthe ashes aredisposed ofby burial insoil orotherwise locally dispersed,they shouldbe
retained in the closed container until all cinders have thoroughly cooled. Do not place other waste
materials in the metal ash container.
4.3 Chimney Cleaning
Regular chimney maintenance, as well as good burning practices, are required to prevent chimney
fires. The chimney and the chimney connector pipe must be maintained in good condition and be
kept clean for optimal safety. The chimney should be checked regularly for creosote build-up.
Inspection and cleaning of the chimney can be facilitated by removing the baffle.
Caution: Operation Of Your Osburn 2400 Without The Baffle May Cause Unsafe And
Hazardous Temperature Conditions And Will Void The Warranty.
Contact your local, municipal, state, or provincial fire authority for information on how to handle a
chimney fire before there is any chance that it may happen.
Creosote – Formation And Need For Removal
When wood (especially green wood) is burned without adequate heat or air supply, it produces tar
and other organic vapours (smoke), which combine with expelled moisture to form creosote.
The creosote vapours condense in the relatively cool chimney flue of a slow-burning fire. As a
result, creosote residue accumulates on the flue lining. When ignited, this creosote makes an
extremely hot fire, which could be hazardous. Check frequently for creosote build-up. In the event
of a insert or chimney component failure, replace only with equipment that is equivalent to the
original, available from your Osburn dealer.
Your Osburn insert has been designed to reduce the amount of creosote produced. Even so, the
chimney connector pipe and chimney should be inspected at least once every two months during
theheating seasonto determineif acreosote build-uphasoccurred. If creosotehas accumulated,it
should be removed to reduce the risk of chimney fire. Call a professional chimney sweep, or go to
your local Osburn dealer and purchase a chimney brush, and have the chimney cleaned.