Glen Dimplex Nectre Big Bakers Oven User manual

Revision B
Nectre Big Bakers Oven
Operating Instructions
Keep these instructions for future reference
Glen Dimplex Australia proudly supports the activities of Landcare Australia through its membership of the AHHA

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CONTENTS
1. OPERATING .......................................................................1
1.1. IMPORTANT INFORMATION....................................1
1.2. GENERAL OPERATION..............................................2
1.3. USING THE APPLIANCE FOR THE FIRST TIME...........2
1.4. RECOMMENDED FUELS ...........................................2
1.5. LIGHTING THE FIRE ..................................................2
1.6. RUNNING THE APPLIANCE.......................................3
1.7. OPERATING THE OVEN ............................................3
1.8. BURNING TIPS..........................................................3
1.9. ASH REMOVAL.........................................................4
1.10. FLUE/CHIMNEY FIRE ................................................4
1.11. CLEANING PAINT WORK AND GLASS.......................4
1.12. CLEANING THE FLUE ................................................4
1.13. TROUBLESHOOTING TIPS ........................................4
2. MAINTENANCE AND SERVICING .......................................5
2.1. REPLACING THE FIRE BRICKS ...................................5
2.2. REPLACING THE FIREBOX SIDE SHIELDS ..................5
2.3. REPLACING THE BAFFLE PLATE................................5
2.4. ADJUSTING THE DOOR ............................................5
2.5. CHECK CREOSOTE BUILD UP....................................5
2.6. REPLACING DOOR GLASS.........................................6
2.7. REPLACING THE DOOR SEAL....................................6
2.8. REPLACEMENT SPARE PARTS LIST ...........................6
3. WARRANTY .......................................................................1
1. OPERATING
1.1. IMPORTANT INFORMATION
Before use of this appliance please read these instructions
fully.
WARNING: ANY MODIFICATION OF THE APPLIANCE THAT
HAS NOT BEEN APPROVED IN WRITING BY THE TESTING
AUTHORITY IS CONSIDERED AS BREACHING AS/NZS 4013.
WARNING: DO NOT USE FLAMMABLE LIQUIDS OR AEROSOLS
TO START OR REKINDLE THE FIRE.
WARNING: DO NOT USE FLAMMABLE LIQUIDS OR AEROSOLS
IN THE VICINITY OF THIS APPLIANCE WHEN IT IS OPERATING.
WARNING: DO NOT STORE FUEL WITHIN HEATER
INSTALLATION CLEARANCES.
WARNING: WHEN OPERATING THIS APPLIANCE AS AN OPEN
FIRE USE A FIRE SCREEN.
WARNING: OPEN AIR CONTROL (AND DAMPER WHEN
FITTED) BEFORE OPENING FIRING DOOR.
WARNING: DO NOT BURN WOOD THAT IS PAINTED; OR IS
COATED WITH PLASTIC; OR HAS BEEN TREATED WITH ANY
CHEMICAL.
CAUTION: THIS APPLIANCE SHOULD NOT BE OPERATED WITH
A CRACKED GLASS.
CAUTION: THIS APPLIANCE SHOULD BE MAINTAINED AND
OPERATED AT ALL TIMES IN ACCORDANCE WITH THESE
INSTRUCTIONS.
The appliance or flue system should not be modified in any
way without the written approval of the manufacturer.
Extractor fans or cooker hoods must not be placed in the
same room or space as this can cause appliance to emit smoke
into the room.
THE OPERATING INSTRUCTIONS IN THIS MANUAL APPLY
TO THE NECTRE BIG BAKERS OVEN.

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1.2. GENERAL OPERATION
Air Controls
The Nectre Big Bakers Oven has two air controls and a bypass
damper for controlling the fire.
The top air slide allows air to enter the firebox from above the
door where it is then drawn down into the base of the fire
while keeping the glass clean. Pull knob out to the left to open
and push in to the right to close.
The bottom air slide allows air to enter directly into the base
of the fire and is used as a boost especially when getting the
fire up to temperature. Slide spring handle to the left to open
and to the right to close.
The bypass damper is opened by pushing the handle towards
the rear and closed by pulling the handle towards the front. In
the open position, the flame path is diverted from the firebox
directly up the flue. In the closed position, the flames are
diverted down the sides of the heater, around the oven
before travelling up the rear of the heater and up the flue.
Door Handle
Warning: The door handle may get hot if the appliance has
been left in the high burn setting for an extended period. Use
a protective glove to open.
Open the top air slide before opening the door to eliminate
the chance of backdraft and smoke entering the room.
1.3. USING THE APPLIANCE FOR THE FIRST TIME
For the first few times the appliance is lit, odorous fumes
will be given off as the paint cures.
Do not touch the paint work while it is curing otherwise it
can leave a permanent mark on the appliance.
Keep the room well ventilated until these fumes have
cleared.
Once the paint has cured, this will not re-occur.
1.4. RECOMMENDED FUELS
Burn only seasoned hardwood timber with a moisture
content of less than 20%.
Newly cut wood should be split and allowed to
dry/season for 12 to 18 months before use.
Wood should be stored in an environment protected
from the weather to minimise any potential moisture
content.
For best results, wood should not exceed ¾ of the firebox
front to back dimension in length and 150mm in
diameter. Any larger and appliance will not operate at its
optimum. It is better to burn several smaller pieces of
wood than one large piece at a time.
Poor quality timber:
oCauses low combustion efficiency.
oProduces poor emissions (smoky).
oResults in additional build-up of creosote (soot)
in the flue which will then require regular
cleaning and may result in a flue fire.
Do not burn painted, impregnated/treated wood,
manufactured board products or pallet wood.
1.5. LIGHTING THE FIRE
1) Place firelighters or paper and dry kindling wood in the
base of the firebox.
2) Fully open air controls (slide top and bottom air slides to
the left, push bypass damper handle towards rear).
3) Light the paper or firelighters.
4) Once the fire has taken hold add larger pieces of wood.
For optimal burn conditions, place the logs in a front to
back orientation (right angles to the door opening). Too
many logs may smother the fire.
5) Once the fire is established, close the bypass damper (pull
to front) to increase heating efficiency.
6) Once the fire is established, close the bottom air slide
(slide to the right). Leaving this open can risk over-firing
and damaging the appliance.
Do not leave the appliance unattended while the door is
open.
Do not leave fire unattended with bottom air control open as
over-firing may occur.
Bypass Damper
Bottom air slide
Top air slide

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1.6. RUNNING THE APPLIANCE
High Heat Output
This setting generates maximum heat output and high oven
temperatures. It is not the most energy efficient as some heat
is lost up the flue instead of being transferred into the room.
However, once fire has established, particulate emissions will
be very low (clean burning).
After establishing the fire and loading it with larger pieces
of wood, leave it running with the top air slide fully open
to generate high heat output.
Running the appliance with the door open will not
produce maximum heating in the room as it will draw a
lot of already warmed air out of the room.
Similarly running the heater with the top air slide and the
bottom air slide fully open will often not give the hottest
fire as too much heat is lost up the flue and does not
come into the room
Do not overload firebox with fuel.
Low Heat Output
This setting will provide the best energy efficiency as the
wood burns for longer. However, if not operated correctly
may result in higher particulate emissions.
The heat output on the appliance can be reduced by
closing the air controls which will restrict the oxygen
supplied to the fire and slow down the rate at which the
wood burns.
Prior to closing the air slide, ensure the fire is burning
briskly. This may require opening the air slide fully for 5-
10mins before shutting down.
For the optimum between clean burning, and getting the
best in efficiency, from the fully closed position, open the
top air slide 4-5mm. The bottom air slide must be shut.
The top air slide can be adjusted to any position so
desired depending on wanted heat output versus burn
time.
Reload with more wood
1) Open the top air slide before opening the door.
2) Rake / break up any existing coals.
3) Load wood with the length orientated front to back.
Better results will be achieved by loading several smaller
pieces of wood rather than one large piece.
4) Close the door with the top air slide fully open and leave
for a minimum of 10 minutes to allow the fresh wood to
catch.
5) After 10 or more minutes, the air slide can be adjusted to
the desired heat output setting.
1.7. OPERATING THE OVEN
When using the oven ensure the bypass damper is in the
closed position, and the bottom air slide in the oven door is
closed.
To maintain a constant oven temperature, have the fire
burning briskly using small pieces of wood that provide plenty
of flames.
If the temperature in the oven gets too hot, reduce the
amount of oxygen to the fire by partially closing the top air
slide. Alternatively, open the bottom door slide control in the
oven door.
If the temperature in the oven drops below that desired, open
the top air slide and add some more pieces of wood if
required.
The round hotplates in the top of the heater can be removed
for cooking purposes allowing direct flame to a wok or frypan.
A triangular-handled tool is provided for lifting out the round
hotplates.
1.8. BURNING TIPS
Fuel Quality
Use wood with a moisture content of less than 20%. Logs
should not feel moist or have moss and fungal growths.
Symptoms of burning wet wood:
Difficulty starting and keeping a fire burning well
Smoke and only small flames
Dirty glass and/or fire bricks
Rapid creosote build-up in the flue/chimney
Low heat output
Short burn times, and blue/grey smoke from the
flue/chimney outlet
If on the rare occasion the wood is not ideally seasoned, still
retaining some moisture, continue using the top air slide to
determine the heat output and burn rate but also leave the
bottom air slide open 3-4mm. This will allow some extra
oxygen into the base of the fire allowing it to burn hotter.
Run appliance at high heat output for a short period each day
to avoid large build-up of tars and creosote within the
appliance and flue.
Flue Draught
The flue has two main functions:
1) To safely remove smoke, gases and fumes from the
appliance.
2) To provide sufficient draught (suction) in the appliance to
ensure the fire keeps burning.

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Draught is caused by the rising hot air in the flue when the fire
has been lit.
The position, height and size of the flue can affect the
performance of the flue draught. Refer to installation guide
for details on flue installation.
Factors affecting the flue draught include:
Insufficient flue height
Trees or other buildings nearby causing turbulence
High and gusty winds
Outside temperature and weather conditions
Blocked flue
For advice on the correction of persistent flue problems
consult your supplier/installer for more detail.
1.9. ASH REMOVAL
Depending on the type of wood burnt and frequency, the
ashes will need removing every 2 to 6 weeks.
Leave a 10mm layer of ash to insulate the firebox bottom.
Excess ashes should be removed when necessary, placed in a
non-combustible container with a tightly fitting lid and moved
outdoors immediately to a location clear of combustible
materials.
1.10. FLUE/CHIMNEY FIRE
If a flue/chimney fire occurs:
Shut air controls fully to smother the fire.
Do not use the appliance after a flue fire until an
accredited installer has assessed the cause and any
resultant damage.
1.11. CLEANING PAINT WORK AND GLASS
The appliance, when cool, can be cleaned with a damp
cloth.
Over the years, the black paint will fade and can be
touched up with Stove Bright metallic black paint.
To clean the glass, we recommend using a household
window cleaner or general purpose cleaner with a soft
cloth.
Do not use abrasive cleaner or scourer pads.
1.12. CLEANING THE FLUE
Check inside of flue prior to each season for any build-up of
creosote (wood tar).
To check the flue:
1) Remove the baffle plate (refer to ‘Replacing the Baffle
Plate’ under Maintenance & Servicing).
2) Hold a small mirror on an angle below the flue, with a
torch shining towards it, and look for black creosote
build-up. It is normal to see a fine black powdery layer,
but if built up layers of creosote can be seen, the flue
requires cleaning.
3) If no cleaning is required, re-fit the baffle plate.
To clean the flue:
1) A flue cleaning brush can be purchased from most wood
heater retail outlets or large hardware stores.
Alternatively, hire a flue cleaning service to do the job for
you (it’s a dirty job).
2) With the baffle plates removed, tie a rope to one end of
the brush, and drop the rope down the flue (from outside
on top of the roof).
3) Grab the end of the rope from inside the firebox and pull
the brush down through the flue.
4) Check the inside of the flue with the mirror and torch.
5) Repeat cleaning process if necessary.
6) Once the flue is clean, remove any excess creosote from
the firebox.
7) Replace the baffle plate.
Only pull brush downwards through flue, as pulling upwards
may separate the flue sections at their joins.
1.13. TROUBLESHOOTING TIPS
Glass in door blackening
This can have several possible causes:
Burning unseasoned wood —If the wood is too wet, it
will cause the glass to blacken.
Appliance operated at low temperature —After an
overnight burn where the air control has been fully
closed, the glass may have blackened. When the fire is re-
stoked and burning on the high heat setting, the
blackened glass should self-clean.
Problems with the flue —Insufficient flue draught can
cause the glass to blacken. If the flue is too short, not
properly insulated, or in a position that results in a
downdraught, then there will be insufficient flue draught.
Contact the installer should this happen.
Trouble starting the fire
When cleaning, it is best to retain some ash in the base of the
firebox. A layer of ash insulates the base, helping to maintain
a high temperature for combustion. Also, if all the ash has
been removed from the firebox, it can affect the supply of air
to the base of the fire.