Osburn OB04003 User manual

READ AND KEEP THIS MANUAL FOR REFERENCE
45919A
Printed in Canada 30-07-2018
INSTALLATION AND OPERATION MANUAL
Stratford
(OB04003 Model)
US ENVIRONMENTAL PROTECTION
AGENCY PHASE II CERTIFIED WOOD
FIREPLACE
Listed to standards ULC-S610 and UL 127
by an accredited laboratory
www.osburn-mfg.com
Stove Builder International Inc.
250, rue de Copenhague, St-Augustin-de-Desmaures (Québec) Canada G3A 2H3
customer service: 418-908-8002 E-mail: [e-mail]
This manual is available for free download on the manufacturer’s web site. It is a copyrighted
document. Re-sale is strictly prohibited. The manufacturer may update this manual from
time to time and cannot be responsible for problems, injuries, or damages arising out of the
use of information contained in any manual obtained from unauthorized sources.

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THANK YOU FOR CHOOSING THIS OSBURN WOOD FIREPLACE
As one of North America’s largest and most respected wood stove and fireplace manufacturers, Stove
Builder International takes pride in the quality and performance of all its products. We want to help you
get maximum satisfaction as you use this product.
In the pages that follow you will find general advice on wood heating, detailed instructions for safe and
effective installation, and guidance on how to get the best performance from this fireplace as you build and
maintain fires, and maintain your wood heating system.
We recommend that our woodburning hearth products be installed and serviced by professionals who are
certified by a “Qualified Agency” such as NFI (National Fireplace Institute®) or CSIA (Chimney Safety
Institute of America) in the United States, in Canada by WETT (Wood Energy Technical Training) or in
Quebec by APC (Association des Professionnels du Chauffage).
Congratulations on making a wise purchase.
If this fireplace is not properly installed, combustible materials near it may overheat. To reduce the risk
of fire, follow the installation instructions in this manual exactly. Contact local building or fire officials
about restrictions and installation inspection requirements in your area.
Please read this entire manual before you install and use your new fireplace. You may need to get a
building permit for the installation of this fireplace and the chimney that it is connected to. Consult your
municipal building department or fire department before installation. We recommend that you also
inform your home insurance company to find out if the installation will affect your policy.
This heating unit is designed to serve as a supplementary heat source. We recommend that a primary
heat source also be available in the home. The manufacturer cannot be responsible for costs associated
with the use of another heating system.
CAUTION:Do not attempt to modify or alter the construction of the fireplace or its components. Any
modification or alteration of construction may void the warranty, listings and approvals of this system. In
that case, Stove Builder International (SBI) will not be responsible for damages. Install the fireplace only as
described in these instructions.

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Table of content
PART A - OPERATION AND MAINTENANCE...............................6
1Safety Information..................................................................... 6
1.1 Summary of Operation and Maintenance Cautions and Warnings ........................ 6
2General Information on Stratford (OB04003).......................... 8
2.1 Appliance Performance (1)...................................................................................... 8
2.2 General Features................................................................................................... 9
2.3 Zone Heating and How to Make it Work for You.................................................. 13
2.4 The Benefits of Low Emissions and High Efficiency............................................. 13
2.5 The SBI Commitment to You and the Environment.............................................. 13
2.5.1 What is Your New Fireplace Made Of?............................................................. 13
3Fuel........................................................................................... 14
3.1 Materials That Should Not be Burned.................................................................. 14
3.2 How to Prepare or Buy Good Firewood ............................................................... 14
3.2.1 What is Good Firewood? .................................................................................. 14
3.2.2 Tree Species..................................................................................................... 14
3.2.3 Log Length........................................................................................................ 15
3.2.4 Piece Size......................................................................................................... 15
3.2.5 How to Dry Firewood ........................................................................................ 15
3.2.6 Judging Firewood Moisture Content................................................................. 16
3.3 Manufactured Logs .............................................................................................. 17
4Operating Your Fireplace....................................................... 18
4.1 The use of a firescreen........................................................................................ 18
4.2 Your First Fires..................................................................................................... 18
4.3 Lighting Fires ....................................................................................................... 18
4.3.1 Conventional Fire Starting ................................................................................ 19
4.3.2 The Top Down Fire........................................................................................... 19
4.3.3 Two Parallel Logs............................................................................................. 19
4.3.4 Using Fire Starters............................................................................................ 20
4.4 Maintaining Wood Fires ....................................................................................... 20
4.4.1 General Advice................................................................................................. 20
4.4.2 Ash Removal .................................................................................................... 20
4.4.3 Raking Charcoal............................................................................................... 21
4.4.4 Firing Each New Load Hot................................................................................ 21
4.4.5 Turning Down the Air Supply............................................................................ 21
4.4.6 Building Different Fires for Diverse Needs........................................................ 22
5Maintaining Your Wood Heating System.............................. 24
5.1 Fireplace Maintenance......................................................................................... 24

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5.1.1 Plated Finish Maintenance ................................................................................24
5.1.2 Glass Door Cleaning .........................................................................................24
5.1.3 Door Adjustment................................................................................................25
5.1.4 Door Alignment..................................................................................................26
5.1.5 Replacing the Door Gasket................................................................................27
5.1.6 Replacing the Glass Gasket and/or the Glass...................................................28
5.1.7 Cleaning and Painting the Fireplace..................................................................29
5.2 Chimney and Chimney Liner Maintenance...........................................................29
5.2.1 Why Chimney Cleaning is Necessary................................................................29
5.2.2 How Often Should You Clean the Chimney?.....................................................29
5.2.3 Cleaning the Chimney.......................................................................................30
5.2.4 Fire Baffle Removal Prior to Cleaning the Chimney..........................................30
5.2.5 Chimney Fire.....................................................................................................31
PART B – INSTALLATION............................................................32
Summary of Installation Cautions and Warnings.............................................................32
Regulations Covering Fireplace Installation.....................................................................33
6Fireplace Installation ..............................................................33
6.1 Standoff Installation ..............................................................................................33
6.2 Locating the STRATFORD ...................................................................................33
6.2.1 Raised base installation of more than 4" (R value for the hearth extension not required)
34
6.2.2 On the floor or on a raised base of less than 4" installation (R value for the hearth
extension required)........................................................................................................35
6.2.3 R Calculations ...................................................................................................36
6.2.4 Minimum HeartH Extension Requirements........................................................37
6.2.5 Framing, Facing, Mantel, and Combustible Shelf..............................................38
7Clearances to Combustible Material .....................................44
7.1 Locating the Certification Label.............................................................................44
8The Venting System................................................................44
8.1 General.................................................................................................................44
8.2 Suitable Chimneys................................................................................................45
8.3 Minimum Chimney Height.....................................................................................45
8.4 The Relationship Between the Chimney and the House.......................................45
8.4.1 Why the chimney should penetrate the highest heated space ..........................45
8.5 Chimney Installation Notes...................................................................................46
8.6 Chimney Installation Instructions..........................................................................49
8.6.1 Examples of Typical Chimney Installation .........................................................49
8.6.2 Offset Chimney Installation................................................................................53
8.7 Angled Wall Radiation Shield................................................................................57
8.8 Chimney Support Installation................................................................................58

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8.8.1 Universal Roof Support..................................................................................... 58
8.8.2 Universal Offset Support................................................................................... 58
8.9 Installation Instructions for Masonry Application.................................................. 58
8.10 Supply of Combustion Air..................................................................................... 59
8.10.1 Air Supply in Conventional Houses................................................................... 59
Appendix 1: Heat Distribution Kit Installation...........................60
Appendix 2: Blower Maintenance or Replacement................... 72
Appendix 3: Installing the Optional Door Overlay.................... 75
Appendix 4: Installing the Fresh Air Intake Kit ......................... 76
Appendix 5: Installing the Optional Firescreen (AC01560)......80
Appendix 6: Installation of Secondary Air Tubes and Baffle...81
Appendix 7: Exploded Diagram and Parts List .........................85
REGISTER YOUR WARRANTY ONLINE
To receive full warranty coverage, you will need to show evidence of
the date you purchased your fireplace. Keep your sales invoice. We
also recommend that you register your warranty online at:
https://www.osburn-mfg.com/en/warranty/warranty-registration/
Registering your warranty online will help us to quickly track the
information we need about your fireplace.

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PART A - OPERATION AND MAINTENANCE
Please see Part B for installation instructions.
1SAFETY INFORMATION
1.1 SUMMARY OF OPERATION AND MAINTENANCE CAUTIONS AND WARNINGS
•HOT WHILE IN OPERATION, KEEP CHILDREN, CLOTHING AND FURNITURE AWAY. CONTACT MAY CAUSE SKIN
BURNS. GLOVES MAY BE NEEDED FOR FIREPLACE OPERATION.
•USING A FIREPLACE WITH CRACKED OR BROKEN COMPONENTS, SUCH AS GLASS OR FIREBRICKS OR BAFFLES
MAY PRODUCE AN UNSAFE CONDITION AND MAY DAMAGE THE FIREPLACE.
•OPERATE ONLY WITH DOOR FULLY CLOSED OR FULLY OPEN WITH FIRESCREEN IN PLACE. IF DOOR IS LEFT
PARTLY OPEN, GAS AND FLAME MAY BE DRAWN OUT OF THE OPENING, CREATING RISKS FROM BOTH FIRE
AND SMOKE.
•OPEN THE AIR CONTROL FULLY BEFORE OPENING THE LOADING DOOR.
•THIS FIREPLACE HAS BEEN TESTED FOR USE WITH AN OPEN DOOR IN CONJUNCTION WITH A FIRESCREEN
(AC01560, SOLD SEPARATELY). THE DOOR MAY BE OPEN, OR FIRESCREEN REMOVED ONLY DURING LIGHTING
PROCEDURES OR RELOADING. ALWAYS CLOSE THE DOOR OR PUT BACK THE FIRESCREEN AFTER IGNITION. DO
NOT LEAVE THE FIREPLACE UNATTENDED WHEN THE DOOR IS OPENED WITH OR WITHOUT FIRESCREEN.
•DO NOT INSTALL THE FIREPLACE OUTDOORS.
•THE FIREPLACE AND CHIMNEY MUST BE IN AN ENCLOSURE UP TO THE ATTIC.
•NEVER USE GASOLINE, LANTERN FUEL (NAPHTHA), FUEL OIL, MOTOR OIL, KEROSENE, CHARCOAL LIGHTER
FLUID, OR SIMILAR LIQUIDS OR AEROSOLS TO START A FIRE IN THIS FIREPLACE. KEEP ALL SUCH LIQUIDS OR
AEROSOLS WELL AWAY FROM THE FIREPLACE WHILE IT IS IN USE.
•DO NOT STORE FUEL WITHIN HEATER MINIMUM INSTALLATION CLEARANCES.
•BURN ONLY SEASONED NATURAL FIREWOOD.
•DO NOT BURN:
oGARBAGE OF ANY KIND,
oCOAL OR CHARCOAL,
oTREATED, PAINTED OR COATED WOOD,
oPLYWOOD OR PARTICLE BOARD,
oFINE PAPER, COLORED PAPER OR CARDBOARD,
oSALT WATER DRIFTWOOD,
oMANUFACTURED LOGS CONTAINING WAX OR CHEMICAL ADDITIVES,
oRAILROAD TIES OR
oLIQUIDS SUCH AS KEROSCENE OR DIESEL FUEL TO START A FIRE.
•THIS APPLIANCE SHOULD BE MAINTAINED AND OPERATED AT ALL TIMES IN ACCORDANCE WITH THESE
INSTRUCTIONS.
•DO NOT ELEVATE THE FIRE BY MEANS OF GRATES, AND IRONS OR OTHER MEANS.
•THIS FIREPLACE MUST ALWAYS BE USED WITH THE ORIGINAL ANDIRONS (SEE APPENDIX 7: EXPLODED
DIAGRAM AND PARTS LIST FOR REPLACEMENT PARTS).

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•SOME JURISDICTIONS IN THE USA REQUIRE A SUPPLY OF OUTDOOR COMBUSTION AIR FOR THE FIREPLACE. IN
CANADA, AN OUTDOOR AIR SUPPLY IS NOT REQUIRED, IF A CARBON MONOXIDE (CO) DETECTOR/ALARM IS
LOCATED IN THE ROOM IN WHICH THE FIREPLACE IS INSTALLED. THE CO DETECTOR WILL PROVIDE WARNING
IF FOR ANY REASON THE WOOD FIREPLACE FAILS TO FUNCTION CORRECTLY. IF YOU ARE REQUIRED TO INSTALL
AN OUTDOOR AIR SUPPLY, WE RECOMMEND THAT YOU ALSO INSTALL A CO DETECTOR/ALARM TO PROVIDE
WARNING IF SMOKE SPILLAGE FROM THE FIREPLACE OCCURS.
CAUTION: KEEP COMBUSTIBLE MATERIALS AT LEAST 48 INCHES AWAY FROM THE FRONT OF THE FIREPLACE
OPENING.
CAUTION: DO NOT USE A FIREPLACE INSERT AND OTHER PRODUCTS NOT SPECIFIED FOR USE WITH THIS
FIREPLACE.
CAUTION: DO NOT OBSTRUCT AIR INTLETS. THIS FIREPLACE NEEDS AIR FOR ITS GOOD OPERATION.
CAUTION: DO NOT BLOCK THE HOT AIR VENTS TO THE FIREPLACE AS THIS WILL CAUSE THE FIREPLACE TO
OVERHEAT.
CAUTION: DO NOT INSTALL IN A MOBILE HOME (CANADA) OR MANUFACTURED HOME (USA). (see note p.9)
WARNING: DO NOT USE MATERIALS OTHER THAN THOSE LISTED IN THE REPLACEMENT PARTS SECTION
DURING INSTALLATION AS THEY MAY BE SAFETY HAZARDS AND A FIRE COULD RESULT.
WARNING: THIS FIREPLACE HAS NOT BEEN TESTED WITH AN UNVENTED OR VENTED GAS LOG SET. TO REDUCE
RISK OF FIRE OR INJURY, DO NOT INSTALL AN UNVENTED GAS LOG SET INTO THIS FIREPLACE.
PLEASE NOTE THAT THE PICTURES SHOWN IN THIS MANUAL ARE GENERIC AND MAY NOT
MATCH EXACTLY THE LOOK OF YOUR FIREPLACE.
WARNING: This product can expose you to chemicals including carbon monoxide,
which is known to the State of California to cause cancer, birth defects or other
reproductive harm. For more information go to www.P65warnings.ca.gov/

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2GENERAL INFORMATION ON STRATFORD (OB04003)
2.1 APPLIANCE PERFORMANCE (1)
Fuel type Dry cordwood
Recommended heating area[*] 750 to 2,100 ft2(70 to 195 m2)
Firebox volume 2.5 ft3(0.071 m3)
Maximum burn time[*] 9 h
Maximum heat output(2) (dry cordwood) 75,000 BTU/h (22.0 kW)
Overall heat output rate (min. to max.)(2)(3) 11,500 BTU/h to 30,500 BTU/h (3.4 kW to 8.9 kW)
Average overall efficiency(3) - EPA Cribs / Douglas Fir 55.0% (HHV(4)) 60.0% (LHV(5))
Average overall efficiency(3) - Dry cordwood To come% (HHV(4)) To come% (LHV(5))
Optimum efficiency(2)(6) 75.0%
Average particulate emissions rate(7) 4.4 g/h (EPA / CSA B415.1-10)
[*] Recommended heating area and maximum burn time may vary subject to location in home, chimney draft, heat loss factors,
climate, fuel type and other variables. The recommended heated area for a given appliance is defined by the manufacturer as
its capacity to maintain a minimum acceptable temperature in the designated area in case of a power failure.
(1) Values are as measured per test method, except for the recommended heating area, firebox volume, maximum burn time
and maximum heat output.
(2) The maximum heat output (dry cordwood) is based on a loading density varying between 15 lb/ft3and 20 lb/ft3. Other
performances are based on a fuel load prescribed by the standard. The specified loading density varies between 7 lb/ft³ and
12 lb/ft3. The moisture content is between 19% and 25%.
(3) As measured per CSA B415.1-10 stack loss method.
(4) Higher Heating Value of the fuel.
(5) Lower Heating Value of the fuel.
(6) Optimum overall efficiency at a specific burn rate (LHV).
(7) This appliance is officially tested and certified by an independent agency.

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2.2 GENERAL FEATURES
Maximum log length 21 in (533 mm) east-west*
Flue outlet diameter 6 in (150 mm)
Chimney diameter 6 in (150 mm)
Type of chimney CAN/ULC S604, UL 103 (1700 °F)
CAN/ULC S629, UL 103 HT (2100 °F)
Baffle material C-Cast
Approved for alcove installation Not approved
Approved for mobile home installation‡Not approved
Shipping weight (without option) 424 lb (192 kg)
Appliance weight (without option) 353 lb (160 kg)
Type of door Double glass with cast iron frame
Type of glass Ceramic glass
Blower Included (up to 176 CFM)
Particulate emission standard EPA / CSA B415.1-10
USA standard (safety) UL 127
Canadian standard (safety) ULC-S610
*East-west: through the door you see the longitudinal sides of the logs; north-south: through the door you see the tips of the
logs.
‡Mobile home (Canada) or manufactured home (USA): The US department of Housing and Urban Development describes
“manufactured homes” better known as “mobile homes” as followed; buildings built on fixed wheels and those transported on
temporary wheels/axles and set on a permanent foundation.In Canada, a mobilehome is a dwelling for which the manufacture
and assembly of each component is completed or substantially completed prior to being moved to a site for installation on a
foundation and connection to service facilities and which conforms to the CAN/CSA-Z240 MH standard.

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