Osburn OB02212 User manual

READ AND KEEP THIS MANUAL FOR REFERENCE
45311
21-10-2014
OWNER`S MANUAL
OSBURN 2200 WOOD FIRE
(OB02212 Model)
Distributed by
Glen Dimplex Australasia
NEW ZEALAND
38 Harris Road, East Tamaki, Auckland
Ph: 09 274 8265 Fax [phone]
Email:[e-mail]
www.masportheating.co.nz
AUSTRALIA
Unit 1,21 Lionel Road
Mount Waverley, Victoria 3149
Ph: 1 300 554 155 Fax [phone]
Email: [e-mail]
www.masportheating.com.au

1
TABLE OF CONTENTS
INTRODUCTION..............................................................................................................2
TECHNICAL SPECIFICATIONS...................................................................................3
DOOR ADJUSTMENT .............................................................................................................4
INSTALLATION...............................................................................................................5
POSITIONING THE STOVE.....................................................................................................6
FLOOR PROTECTOR .............................................................................................................6
CLEARANCES TO HEAT-SENSITIVE MATERIALS...............................................................7
REDUCED CLEARANCES USING SHIELDING .....................................................................8
OPERATING AND MAINTENANCE INSTRUCTIONS ...........................................10
TESTING YOUR WOOD........................................................................................................11
THE FIRST FIRES .................................................................................................................11
LIGHTING THE FIRE.............................................................................................................11
HEATING ...............................................................................................................................13
RELOADING..........................................................................................................................13
CREOSOTE FORMATION AND NEED FOR REMOVAL......................................................14
ASH DISPOSAL.....................................................................................................................14
ASH DISPOSAL USING ASH DRAWER...............................................................................15
BAFFLE INSTALLATION AND BRICK NOTES....................................................................16
SECONDARY AIR TUBE REPLACEMENT...........................................................................19
PAINT.....................................................................................................................................20

2
INTRODUCTION
Glen Dimplex Australasia 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 adviceon
wood heating and controlled combustionaswell astechnicalspecifications regardinginstallation,
operation and maintenance of the model you have chosen.
The instructions pertaining to the installation of your wood stove comply with AS/NZS4013 and
AS/NZS2918 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.
Consult your local city, borough or shire council about restrictions and installations
requirements in your area and the need to obtain a permit.
Keep this instruction manual for future reference.
CAUTIONS:
• HOT WHILE IN OPERATION . KEEP CHILDREN , CLOTHING AND FURNITURE AWAY . CONTACT MAY CAUSE
SKIN 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 .

3
TECHNICAL SPECIFICATIONS
Combustible: Wood
Maximum heat output – hardwood (Australia):
20 kW
Efficiency – hardwood (Australia): 57 %
Emissions – hardwood (Australia): 2.1 g/kg
Color :
Metallic black
Flue Spigot Diameter : 150 mm
Flue system : Standard
Minimum Flue Height (from floor protector): 4.6 meters
Maximum Log Length : 457 mm
Overall dimensions W x D x H
(660 x 666 x 815mm)
Combustion Chamber :
Width x Depth :
Volume :
W x D
(486 x 437 mm)
0,066 m
3
Door Opening Dimensions:
W x H
487 x 227 mm
Weight: 181 Kg

4
DOOR ADJUSTMENT
In order for your stove to operate properly, the door should be adjusted periodicallytoprovidean
air tight fit. To adjust:
•Remove the lock pin (spring pin) by pulling and turning it using pliers ("Vise grip")
•Turn the handle counter clock wise one turn to increase pressure
•Re-install the lock pin (spring pin) with a small hammer
Figure 1: Door adjustment

5
INSTALLATION
IT IS RECOMMENDED THAT THE INSTALLATION OF YOUR OSBURN WOODFIRE BE
CARRIED OUT BY A QUALIFIED SPECIALIST INSTALLER.
IF ANY ELECTRICAL WORK IS REQUIRED, IT MUST BE CARRIED OUT BY A
LICENSED ELECTRICIAN.
WARNING: The instructions pertaining to the installation of your wood stove comply with the
AS/NZS 2918 standard. THE APPLIANCE AND FLUE SYSTEM MUST THEREFORE BE
INSTALLED IN ACCORDANCE WITH AS/NZS 2918 AND THE APPROPRIATE
REQUIREMENTS OF THE RELEVANT BUILDING CODE OR CODES.
WARNING: APPLIANCES INSTALLED IN ACCORDANCE WITH THIS STANDARD SHALL
COMPLY WITH THE REQUIREMENTS OF AS/NZS 4013 WHERE REQUIRED BY THE
REGULATORY AUTHORITY, I.E. THE APPLIANCE SHALL BE IDENTIFIABLE BY A
COMPLIANCE PLATE WITH THE MARKING “TESTED TO AS/NZS 4013”.
ANY MODIFICATION OF THE APPLIANCE THAT HAS NOT BEEN APPROVED IN WRITING
BY THE TESTING AUTHORITY IS CONSIDERED TO BE IN BREACH OF THE APPROVAL
GRANTED FOR COMPLIANCE WITH AS/NZS 4013.
CAUTION:
• MIXING OF APPLIANCE OR FLUE SYSTEM COMPONENTS FROM DIFFERENT SOURCES OR MODIFYING THE
DIMENSIONALSPECIFICATIONOFCOMPONENTSMAYRESULTINHAZARDOUSCONDITIONS . WHERESUCH
ACTION IS CONSIDERED , THE MANUFACTURER SHOULD BE CONSULTED IN THE FIRST INSTANCE .
• CRACKED AND BROKEN COMPONENTS , e.g. GLASS PANELS OR CERAMIC TILES , MAY RENDER THIS
INSTALLATION UNSAFE .
•U SE SMOKE DETECTORS IN THE ROOM WHERE YOUR STOVE IS INSTALLED .
•A SOURCE OF FRESH AIR INTO THE ROOM OR SPACE HEATED SHALL BE PROVIDED WHEN REQUIRED .
•I F THIS STOVE IS NOT PROPERLY INSTALLED , A HOUSE FIRE MAY RESULT . T O REDUCE THE RISK OF
FIRE , FOLLOW THE INSTALLATION INSTRUCTIONS .
•C ONSULT YOUR CITY , BOROUGH OR SHIRE COUNCIL ABOUT RESTRICTIONS AND INSTALLATIONS
REQUIREMENTS IN YOUR AREA .
•K EEP FURNITURE AND DRAPES WELL AWAY FROM THE STOVE .
•N EVER USE GASOLINE , GASOLINE - TYPE LANTERN FUEL , KEROSENE , CHARCOAL LIGHTER FLUID , OR
SIMILAR LIQUIDS TO START OR " FRESHEN UP " A FIRE . KEEP ALL SUCH LIQUIDS WELL AWAY FROM THE
STOVE .
•I N THE EVENT OF A CHIMNEY FIRE , PUSH THE AIR CONTROL FULL CLOSED TO DEPRIVE THE FIRE OF
OXYGEN . C ALL THE FIRE DEPARTMENT .
•D O NOT CONNECT TO ANY AIR DISTRIBUTION DUCT OR SYSTEM .

6
POSITIONING THE STOVE
It is veryimportant to position the wood stove as close as possible to thechimney, andinan area
that will favour the most efficient heat distribution possible throughout the house. The stove
must therefore be installed in the room where the most time is spent, and in the most spacious
room possible. Recall that wood stoves produce radiating heat, the heat we feel when we are
close to a wood stove. A wood stove also functions by convection, that is through the
displacement of hot air accelerated upwards and its replacement with cooler air. If necessary,
the hot air distribution from the stove may be facilitated by the installation of a blower.
The wood stove must not be hooked up to a hot air distribution system since an
excessive accumulation of heat may occur.
A wood stove must never be installed in a hallway or near a staircase, since it may block
the way in case of fire or fall to respect required clearances.
FLOOR PROTECTOR
Your wood stove should be placed on a non-combustible surface. Install a floor protection using
a 6mm thick fibre cement sheet with thermal conducticity of 0.41W/m degree K underneath the
heater.
The floor protector should project beyond the stove as follows:
Minimum Distance From the Door Opening
FRONT
400 mm
SIDES
200 mm
BACK
N/A

7
CLEARANCES TO HEAT-SENSITIVE MATERIALS
It is of outmost importance that the clearances to heat-sensitive materials be carefully
maintained upon installation of the stove you have selected. Refer to the table below :
CLEARANCES TO HEAT SENSITIVE MATERIALS
Model A B C D E
OSBURN 2200 125mm 450mm 75mm 400mm 200mm
•Floor to ceiling height must be at least 1,500 mm in all cases.
•The clearance between the flue pipe and a wall are valid only for vertical walls and for
vertical flue pipe.
Where the flue passes through walls, ceilingsorroofs, ventilated doubleflue-pipecasings
must be used around the flue pipe, along with ceiling plates as specified in
AS/NZS2918:2001.

8
REDUCED CLEARANCES USING SHIELDING
You may decrease the minimum clearances to heat-sensitive materials by installing heat radiation
shields between the walls or the ceiling and the stove. These heat radiation shields must be installed
permanently, and must be made of a heat-resistant or heat-tolerant material.
An air gap must separate the heat shield from any heat-sensitive surface. Furthermore, the heat
shield shall extend in all directions beyond the boundaries of the appliance surfacebya distance
of not less than 450 mm. Exceptions may apply. Refer to AS/NZS2918:2001.
Following the installation of such heat radiation shields, the minimum clearances to heat-sensitive
materials may be reduced by applying the clearances factor in the table below:
CONSTRUCTIONS AND CLEARANCES FACTORS FOR APPLIANCES HEAT SHIELDS WHICH
ARE WITHIN 45
O
OF THE VERTICAL
HEAT SHIELD CONSTRUCTIONS Minimum air gap dimensions
(mm)
Clearances
factor
Single layer of continuous material 12 0.40
Single layer of continuous material 25 0.30
Two spaced layers of continuous material 12+12 0.20
NOTES :
1- Masonry may be used as a heat shield material.
2- Where heat shields are used to reduce appliance clearance dimensions, additional
flue shielding may also be required. Refer to AS/NZS2918:2001.
3- Non standard installations – Refer to AS/NZS2918 for guidance.

9
FLUE TERMINATION REQUIREMENTS

10
OPERATING AND MAINTENANCE INSTRUCTIONS
Keep these instructions for future reference.
WARNING:
• ANY MODIFICATION OF THE APPLIANCE THAT HAS NOT BEEN APPROVED IN WRITING BY THE TESTING
AUTHORITY IS CONSIDERED AS BREACHING AS/NZS 4013.
• DO NOT USE FLAMMABLE LIQUIDS OR AEROSOLS TO START OR REKINDLE THE FIRE .
• DO NOT USE FLAMMABLE LIQUIDS OR AEROSOLS IN THE VICINITY OF THIS APPLIANCE WHEN IT IS
OPERATING .
• DO NOT STORE FUEL WITHIN HEATER INSTALLATION CLEARANCES .
• OPEN AIR CONTROL ( AND DAMPER WHEN FITTED ) BEFORE OPENING FIRING DOOR .
• THIS STOVE IS NOT DESIGNED TO BE USED WITH THE DOOR OPEN . THE DOOR MAY BE OPEN ONLY
DURING LIGHTING PROCEDURES . NEVER LEAVE THE STOVE UNATTENDED WHEN THE DOOR IS OPEN .
• HOT WHILE IN OPERATION , KEEP CHILDREN , CLOTHING AND FURNITURE AWAY . CONTACT MAY CAUSE
SKIN BURNS . WEAR GLOVES TO OPERATE YOUR STOVE .
CAUTION
• THIS APPLIANCE SHOULD BE MAINTAINED AND OPERATED AT ALL TIMES IN ACCORDANCE WITH THESE
INSTRUCTIONS .
• THE USE OF SOME TYPES OF PRESERVATIVE - TREATED WOOD AS A FUEL CAN BE HAZARDOUS .
Your stove was designed to burn wood only; no other material should beburnt. Wasteandother
flammable materials should not be burnt in your wood stove.
IT IS EXTREMELY IMPORTANT THAT YOU USE DRY WOOD ONLY IN YOUR WOOD
STOVE. The wood must have dried for 9 to 15 months, such that the moisture content below
20%. It is very important to keep in mind that even if the wood has been cut one, two or even
more years, it is not necessarily dry.

11
Many problems related to the operation of a wood stove are caused by the fact that the wood
used is too damp or has dried in poor conditions. These problems can be:
•problems lighting the fire
•creosote build-up causing flue fires
•low energy yield
•blackened windows
•incomplete log combustion
Smaller pieces of wood will dry faster. All logs exceeding 150 mm in diameter should be split.
The wood should not be stored directly on the ground. Air should circulate through the cord. A
half to one metre air gap should be left between each row of logs, which should be placed in the
sunniest location possible. The upper layer of wood should be protected from the element but
not the sides.
TESTING YOUR WOOD
When the stove is thoroughly warmed, place one piece of split wood (about130mm indiameter)
parallel to the door on the bed of red embers.
Keep the air control full open by pulling on it and close the door. If ignition of the piece is
accomplishedwithin90secondsfromthetimeifwasplacedinthestove,yourwoodiscorrectlydried.
If ignition takes longer, your wood is damp.
If your wood hisses and water or vapour escapes at the ends of the piece, your wood is soaked
or freshly cut. Do not use this wood in your stove. Large amounts of creosote could be
deposited in your flue system, creating potential conditions for a flue fire.
THE FIRST FIRES
The fresh paint on your stove needs to be cured to preserve its quality. Once the fuel charge is
properly ignited, only burn small fires in your stove for the first four hours of operation. Never
open the air control more than necessary to achieve a medium burn rate.
Make sure that there is enough air circulation while curing the stove. The odours could be
smelled during the 3 or 4 first fires. Never start your stove outside. You will not be able to see if
you are over heating. The smoke resulting from the paint curing process is not toxic.
LIGHTING THE FIRE
After making sure that the stove air intake controls are fully open to the right (located onthefront
of the stove, see Figure 6), place several rumpled sheets of paper in the center of the
combustion chamber. Place 8 to 10 pieces of small dry kindling wood over the paper in the form
of a tent. You may also place a few pieces of heating wood, but choose the smaller ones. No
chemical product should be used to light the fire.

12
Before igniting the paper and kindling wood, it is recommended that you warm up the flue. This
is done in order to avoid back draught problems often due to negative pressure in the house. If
such is the case, open a window slightly near the stove and twist together a few sheets of
newspaper into a torch. Light up this paper torch and hold it as close as possible to the mouth of
the pipe inside the combustion chamber to warm up the flue. Once the updraught movement is
initiated, you are ready to ignite the stove by lighting the paper and kindling wood inside the
combustion chamber.
We therefore suggest that you to leave the door slightly opened (20 mm) for a few minutes,
under supervision, in order to allow for good combustion. After this time, you must close the
door and progressively adjust the air control to obtain the desired temperature.
Use Table 1 to adjust the air control to the desired burn rate:
Burn Rate Air control setting
Low Move Control against the L.H. side.
Medium Low Move Control right by 15-20mm from closed position.
Medium High Move Control right by 20-45mm from closed position
High Move Control against the R.H. side
Table 1: Air control settings
Closing the air control down too soon will lower combustion efficiency, and may result in creosote
build-up in the flue system (which could lead to a future chimney fire).
C AUTION : THE ADJUSTMENT RANGE SHOULD NOT BE ALTERED FOR INCREASED FIRING FOR ANY REASON.
Figure 2 : Air control

13
HEATING
Controlled combustion is the most efficient technique for wood heating because it enables you to
select the type of combustion you want for each given situation. The wood will burn slowly if the
woodstoveairintakecontrolisadjustedtoreducetheoxygensupplyinthecombustionchambertoa
minimum. On the other hand, wood will burn quickly if the air control is adjusted to admit a larger
quantityofoxygeninthecombustionchamber. Theairintakecontrolonyourstoveisverysimple. If
you push it completely to the righ, it is fully open. If you push it fullyto the left, the combustion air is
reduced to a minimum.
Your OSBURN stove may burn differently according to the species of wood used, its moisture
content, the size and density of the pieces, the length of the flue, the altitude, and outside
temperature.
WARNINGS
•N EVER OVERFIRE YOUR STOVE . I F ANY PART OF THE STOVE STARTS TO GLOW RED , OVER FIRING IS
HAPPENING . R EADJUST THE AIR INTAKE CONTROL AT A LOWER SETTING .
•N EVER LOAD YOUR STOVE UP TO THE STAINLESS BAFFLE . A LWAYS LEAVE 5 TO 10 CENTIMETERS TO
ALLOW PROPER COMBUSTION THROUGH SECONDARY AIR OPENINGS ( NEVER PUT WOOD ABOVE THE
FIREBRICK LINING ON THE FIREBOX ). THIS WILL ALSO PREVENT OVERFIRING OF YOUR STOVE .
•T HE INSTALLATION OF A LOG CRADLE IS NOT RECOMMENDED IN YOUR OSBURN WOOD STOVE .
•S HOULD THERE BE A SOOT OR CREOSOTE FIRE IN YOUR FLUE SYSTEM , CLOSE THE AIR CONTROL
COMPLETELY . IMMEDIATELY CALL THE FIRE DEPARTMENT .
RELOADING
Once you have obtained a good bed of embers, you should reload the unit. In order to do so,
open the air control to its maximum for approximately 15 seconds prior to opening the stove
door. Then, proceed by opening the door very slowly; open it by 20 to 40 mm for 10 to 15
seconds before opening it completely. This procedure will increase the draught and thus
eliminate the smoke which is stagnant in a state of slow combustion in the stove. Then bringthe
red embers to the front of the stove and reload the unit. Depending on the type of wood you
burn and the strength of the draught in your flue, you may have to leave the air control
open to its maximum for more than 15 seconds to avoid smoke spillage beforeyoureload
the stove.
It is important to note that wood combustion consumes ambient oxygen in the room .In the case
of negative pressure, it is a good idea to allow fresh air in the room by opening a window slightly.

14
CREOSOTE FORMATION AND NEED FOR REMOVAL
When wood is burnt slowly, it produces tar and other organic vapours, which combine withexpelled
moisture to form creosote. The creosote vapours condense in the relatively cool flue of a slow-
burning fire. As a result, creosote residue accumulates on the flue system. When ignited, this
creosote makes an extremely hot fire. When burning wood, the flue system should be inspectedat
least once every two months during the heating season to determine if a creosote build-up has
occurred.
PREVENTING CREOSOTE BUILD UP
•Always burn dry wood. This allows clean burns and higher flue temperatures, therefore less
creosote deposit.
•Leave the air control full open for about 10 minutes after reloading the stove to bring it back to
proper operating temperatures. The secondary combustion can only take place if the firebox is hot
enough.
•Always check for creosote deposit once every two months and have your flue system cleaned at
least once a year.
ASH DISPOSAL
Ashes should be removed from the stove every few days or when ashes get to 50 to 75mm deep.
Always empty the stove when it is cold, such as in the morning.
Always dispose of ashes in a metal container with a tight fitting lid. Place this container on a non
combustible floor or on the ground, well away from all heat-sensitive materials, pending final
disposal. If the ashes are disposed of by burial in soil or otherwiselocallydispersed,theyshould be
retained in the close container until all cinders have thoroughly cooled.
CAUTIONS:
•A SHES COULD CONTAIN HOT EMBERS EVEN AFTER TWO DAYS WITHOUT OPERATING THE STOVE .
•T HE ASH PAN CAN BECOME VERY HOT . W EAR GLOVES TO PREVENT INJURY .
•N EVER BURN THE STOVE WITH THE ASHDUMP CAPREMOVED . T HISWOULDRESULTINOVER FIRINGTHE
STOVE . D AMAGE TO THE STOVE AND EVEN HOUSE FIRE MAY RESULT .

15
ASH DISPOSAL USING ASH DRAWER
1. Make sure the fire is out, and the stove is cold.
2. Lift the ash dump plug at the left rear of the firebox by hooking the poker through the
loop on the cover and lifting up.
3. Push the ashes through the hole and leave some ashes to cover the ash dump plug once
it is replaced. Leave an ash bed of approximately 25mm deep on the firebox bottom to help
maintain a hot ember bed.
4. Clear the ashes from the area where the plug normally sits so that it will properly seat
against the opening edges; tap it down with your poker to ensure proper seating.
5. Cover the plug with the remaining ashes and continue operation of your stove as usual.
The Ash Drawer is shown in Figure 7 and can be removed by pulling it out toward you. Lift the
Ash Drawer slightly or the pedestal base may get scratched. Close the rear half of the Ash
Drawer lid to prevent spillage. Ashes should be placed in a metal container with a tightly fitting
lid. This closed container should be placed on a non-combustible floor or on the ground, well
away from all combustible materials, pending final disposal. Ensure the rear half of the lid is
open before replacing the Ash Drawer.
6. If the ashes are disposed of byburial in soil or otherwise locally dispersed, theyshould be
retained in the closed container until all cinders have thoroughly cooled. Do not place other
waste materials in the metal ash container. If brightembersareglowingabove theashdumpport
during a low or medium low fire, air may be leaking past the ash plug. If this is happening, a
possible over fire hazard exists. The stove should be shut down and allowed to cool. Properly
seal the ash dump plug to the stove.
Figure 3 : Ash removal

16
BAFFLE INSTALLATION AND BRICK NOTES
1. Stack the baffle boards (A) on top of the vermiculite boards (B) as shown in figure 3a .
Figure 3a
2. Put them on the horizontal air duct (C) (see figure 3b). Afterwards, push them towards the bottom
and sides so that they rest on the back of the firebox (D) and on the side air ducts. Install the baffle
support/extension (H) ensuring that it fits between the front risers and hold it in place. Install the
front secondary air tube as show in figure 3c ensuring air holes face forward. Install the cotter pins
as in fig 3.4. Installing the front secondary air tube (E) will stabilize baffle assembly during the next
step.
Figure 3b

17
3. Install the middle and rear secondaryair tubes ensuring air holes faceforward.Install thecotter pins
as in fig 3.4.
Figure 3c
Baffle installation & removal
All firebrick and vermiculite baffles must be properly in place for correct burning operation. Have any
damaged firebricks replaced. Check the firebricks annually for damage and replace if they are broken or
damaged. See Figure 3d for the firebrick layout. Install the side & back firebricks first, and then the bottom
firebricks.

18
Figure 3d – Firebrick layout
ITEM
PIECE # DESCRIPTION QTY
1 PL35030 BAFFLE INSULATION 2
2 21290 2200 BAFFLE (C-CAST) 2
3 PL35028 REAR SECONDARY AIR TUBE (STAINLESS STEEL) 1
4 PL35027 MIDDLE SECONDARY AIR TUBE (STAINLESS STEEL) 2
5 PL35029 FRONT SECONDARY AIR TUBE (STAINLESS STEEL) 1
6 30068 STAINLESS STEEL COTTER PIN 4
7 SE35031 2200 FRONT BAFFLE SUPPORT EXTENSION 1
8 PL35057 BRICK RETAINER (STAINLESS STEEL) 2
9 29011 YELLOW BRICK 4” X 9” X 1 1/4” 4
10 29020 YELLOW BRICK 4 1/2” X 9” X 1 1/4” 5
11 PL36117 YELLOW BRICK 2 3/4” X 4” X 1 1/4” 1
12 29001 YELLOW BRICK 4” X 8” X 1 1/4” 3
13 29005 YELLOW BRICK 6” X 8” X 1 1/4” 1
14 PL36116 YELLOW BRICK 3 1/2” X 5 1/8” X 1 1/4” 1
15 PL36060 YELLOW BRICK 3 1/2” X 9” X 1 1/4” 2
16 SE16059 ASH DUMP PLUG 1

19
SECONDARY AIR TUBE REPLACEMENT
(See Figure 4)
1. Remove cotter pin at LH end of tube.
2. Slide tube to right and lower tube end below LH plenum.
3. Slide tube to left to remove.
4. Reassemble in reverse order using a new cotter pin. The cotter pin is a hammerlock
style and locks into place by hitting the head sharply with a hammer.
5. Note that any tube can be replaced without disturbing the baffle.
Important Notes:
The air tubes are identified for placement as follows:
Front to back: Tube No. 167 Holes of 4 mm diameter
Tube No. 2 67 Holes of 3.6 mm diameter
Tube No. 3 67 Holes of 3.6 mm diameter
Tube No. 4 67 Holes of 3.2 mm diameter
Figure 4 : Secondary Air Tube replacement