Mi-Fires Small Tinderbox Multifuel Guide

User & Installation
Manual
Version_2_06_2021_Tinderbox MF
www.mi-fires.com
BS EN 13240:2001 + A2:2004
Tested as intermittent
appliances burning wood logs
MODEL:
Small Tinderbox Multifuel
Medium Tinderbox Multifuel
Large Tinderbox Multifuel

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Before we start
Thank you and congratulations, you are now the proud owner of one
of the most environmentally friendly and efficient multifuel burning
stoves available on the market today.
Your new stove is fully compliant with all European and UK laws and meets all the criteria of EcoDesign
2022.
Please take a moment to study some of the key points that should be taken into consideration before
you start using your new stove.
At Mi-Fires, we believe the best way to enjoy the maximum benefit from your new stove is that it should
be installed by a fully trained competent stove installer that can identify the optimal way to install and
commission your new appliance.
You can find a list of fully approved and trained stove and chimney installers on the HETAS website or
take advice from a registered competent person.
WWW.HETAS.CO.UK
Please Note: It is a legal requirement under England, Scotland, N.I. and Wales building regulations that
the installation of the stove is carried out under local authority building control approval or installed by
a competent person registered with a government approved scheme.
MI-Fires are UKCA approved, Defra smoke exempt and can be used in smoke controlled zones only
when the stop is in place and installed in accordance with the current building control regulations.
Please note: this is a Multi-fuel stove, your new stove has been specifically designed for the
combustion of wood <20% Moisture and approved wood bricks. The use of approved manufactured
Smokeless mineral fuels is also allowed.
The appliance should not be used as an incinerator for house hold waste or any unapproved fuels.
This appliance does get hot whilst running. It is recommended that a suitable guard is used to protect
children and the elderly or infirm.
Please do not make any unauthorised changes or modifications to your appliance.
Warning: Take care, the stove surfaces reach extremely high temperatures. To minimise the
effects to the environment a few keys rules should be remembered.
Always Ensure:
The Correct Stove
The Correct Installation
The Correct Fuel
The Correct Operation
The Correct Sweeping and Maintenance
These few rules when followed will give you years of heat and enjoyment from your new stove.
PRODUCTION NUMBER
The stove has a production number on the rating plate on the back of the stove.
We recommend that you note down this number in the box below before mounting the wood stove.
For the purposes of the guarantee and for other enquiries, it is important that you are able to quote this
number.
PRODUCTION NUMBER:

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Tinderbox Multifuel Stove
CONTENTS
1. COMPLIANCE
1.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. INSTALLATION OF THE STOVE
2.1 Pre-Installation .....................................................................5
2.2 Position of the stove / Distance Requirements .....................................5
2.3 Flue Requirements ................................................................ 6
2.4 Ventilation / fresh air supply ........................................................7
2.5 The Clean Air Act 1993 and smoke control areas....................................7
2.6 Commissioning .....................................................................7
3. LIGHTING AND USING THE STOVE
3.1 Important safety information...................................................... 8
3.2 The first time a fire is lit ............................................................ 8
3.3 The Stove Air Controls ............................................................. 8
3.4 How should I use my wood burning stove? ....................................... 8
3.5 Lighting a fire in the wood burning stove ......................................... 9
3.6 Important Information for wood burning ......................................... 9
3.7 Lighting a fire using smokeless fuel ...............................................10
3.8 Important Information for burning smokeless fuel ...............................10
4. CLEANING AND MAINTENANCE
4.1 Chimney Sweeping ................................................................11
4.2 Combustion chamber .............................................................11
4.3 Glass ...............................................................................11
4.4 Gaskets ............................................................................11
4.5 Ash .................................................................................11
4.6 Cleaning the stove .................................................................11
4.7 Spare Parts List ....................................................................11
5. WARRANTY & RECORDING
5.1 MI-Fires Stoves Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2 Installer details and Handover checklist...........................................12
5.3 Annual Service / Sweeping record.................................................13
5.4 Warranty Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
6. STOVE DIMENSIONS
Small Tinderbox Multifuel .........................................................15
Medium Tinderbox Multifuel ......................................................16
Large Tinderbox Multifuel .........................................................17

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1. COMPLIANCE
1.1 TECHNICAL DATA
This appliance designed for intermittent operation only.
SMALL TINDERBOX MULTIFUEL
Item No. 137SMFTBOX Mi-Fires Small Tinderbox MF (Multifuel)
Weight 59Kgs
Dimensions (WxDxH mm) 370 x 319 (max footprint/exc handle) x 548 (inc flue)
Flue size 125mm
MEDIUM TINDERBOX MULTIFUEL
Item No. 137MMFTBOX Mi-Fires Medium Tinderbox MF (Multifuel)
Weight 71Kgs
Dimensions (WxDxH mm) 420 x 334 (max footprint/exc handle) x 614 (inc flue)
Flue size 125mm
LARGE TINDERBOX MULTIFUEL
Item No. 137LMFTBOX Mi-Fires Large Tinderbox MF (Multifuel)
Weight 81Kgs
Dimensions (WxDxH mm) 490 x 343 (max footprint/exc handle) x 615 (inc flue)
Flue size 125mm
WOOD LOGS RESULTS
PARAMETER SMALL
TINDERBOX MF
MEDIUM
TINDERBOX MF
LARGE
TINDERBOX MF
Total efficiency 83.0% 82.5% 81.3%
Nominal heat output 5.0 kW 5.0 kW 5.0 kW
Mean CO emission (at 13 % O2)0.09% 0.07% 0.11%
Mean flue gas temperature 290 ºC 272 ºC 274 ºC
Flue gas mass flow 3.1 g/s 3.4 g/s 3.8 g/s
Mean CnHm emission (at 13 % O2)71 Nmg/m343 Nmg/m390 Nmg/m3
Mean NOx emission (at 13 % O2)89 Nmg/m3112 Nmg/m397 Nmg/m3
DIN Plus particulates (at 13 % O2)12 Nmg/m37 Nmg/m310 Nmg/m3
SMOKELESS MINERAL FUELS RESULTS
PARAMETER SMALL
TINDERBOX MF
MEDIUM
TINDERBOX MF
LARGE
TINDERBOX MF
Total efficiency 77.4 78.8% 77.0%
Nominal heat output 5.0 kW 5.0 kW 5.0 kW
Mean CO emission (at 13 % O2)0.09% 0.06% 0.11%
Mean flue gas temperature 289 ºC 305 ºC 280 ºC
Flue gas mass flow 4.8 g/s 3.4 g/s 4.4 g/s
Mean CnHm emission (at 13 % O2)34 Nmg/m39 Nmg/m317 Nmg/m3
Mean NOx emission (at 13 % O2)124 Nmg/m3123 Nmg/m3107 Nmg/m3
DIN Plus particulates (at 13 % O2)18 Nmg/m313 Nmg/m318 Nmg/m3
Please note that details and specifications contained herein are correct at the time of going to print. We
reserve the right to change specifications at any time without prior notice.

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1.3 TRANSPORTATION
When taking your wood burning stove home,
please ensure that it travels in an upright position.
If you wish to lay it flat, it is important that you
remove all loose parts from the combustion
chamber.
Your new wood stove is optimally protected
against damage by the packaging. However,
damages to the stove or accessories may have
occurred during the transport despite this.
For this reason, it is necessary to check your
wood stove for damages and completeness after
unpacking!
Immediately report any defects to your specialist
stove dealer!
Note: This appliance is heavy and must be
handled with care. Adequate facilities must
be available for loading, unloading and site
handling.
2. INSTALLATION OF THE STOVE
2.1 PREINSTALLATION
It is a legal requirement under England and Wales
building regulations that the installation of the
stove is carried out under local authority building
control approval or installed by a competent
person registered with a government approved
scheme.
It is important to ensure that all local rules and
regulations, including ones relating to national
and European standards, are complied with when
installing this device.
Your dealer can also provide you with installation
advice. Remember, it is your responsibility that
rules in force are complied with.
More information can be found out by consulting:
British Standards BS 8303. BS EN 15287-1:2010
Building Regulation Approved Document J for
England and Wales
Building Regulations Part F for Scotland
Building Regulations/1997 Technical Guidance
Approved
Document J-Heat Producing Appliances for
the Republic of Ireland
Registered Body: HETAS (GB only) INFO
(Ireland)
Health and Safety Precautions: Special care must
be taken when installing the stove such that the
requirements of the Health and Safety at Work
Act are met.
2.2 POSITION OF THE STOVE  DISTANCE
REQUIREMENTS
The wood burning stove must be installed in a
suitable and physically possible position. You need
to be sure that the position complies with local
regulations.
Please ensure if the stove is placed in a fireplace
recess it is advised that there is at least 50mm
clearance at the back and 75mm at the sides of
the stove to non-combustible materials, the ideal
distance is 150mm for better convection around the
body of the stove in a non-combustible chamber.
Great attention must be paid to the distance
to combustible material as stated below in
freestanding area and within a fire place chamber.
Distances to combustibles and
recommendations to non-combustibles
materials.
MI-Fires freestanding stoves do not require a
constructional hearth beneath them as they do
not cause the floor temperature to exceed 100°C,
but where possible a constructional hearth is best
practise.
Your hearths must be generally level. In all
instances a non-combustible superimposed
hearth extending fully underneath the stove and
forming an apron of at least 400mm (large and
medium) and 300mm (small) at the front of the
stove and 150mm on either side must be provided.
The superimposed hearth must not be less than
12mm thick and must have a clearly defined edge
(change of level) to discourage placing of any
combustible materials on or partially over it.
The appliance shall be installed on a floor with
adequate load-bearing capacity. If the existing
construction does not meet this requirement,
suitable measures (e.g. load distributing plate)
should be provided to achieve it.
WARNING: Extra fuel should not be stored on
or next to the appliance. Only keep enough fuel
for immediate use nearby and never leave the
appliance unattended for long periods with any
combustible material in close proximity.

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Small Tinderbox
Multifuel
Medium Tinderbox
Multifuel
Large Tinderbox
Multifuel
Back wall (Combustibles) A350mm 450mm 500mm
Side Wall (Combustibles) B600mm 600mm 600mm
Hearth Projection front C300mm 400mm 400mm
Hearth Projection Side D150mm 150mm 150mm
Back Wall (Non-Combustibles) E50mm 50mm 50mm
Side Wall (Non-Combustibles) F75mm 75mm 75mm
Distance to furniture (front) G1075mm 1075mm 1075mm
Recommended distances to combustibles Recommended distances to non-combustibles
2.3 FLUE REQUIREMENTS
Please ensure that all local rules and regulations
are complied with, including CE marking of the
flue pipe. Additionally, distance requirements
to flammable material for the pipe must be
respected.
The optimum combustionisachievedata constant
chimney draft of 10-14 Pascal (Pa) measured in the
flue pipe above the stove. However, with natural
draft the draft in the chimney will be between 18-
25 Pa when conditions are optimum.
There are many factors that affect the chimney
draft, including the outside temperature, wind
strength, and surrounding buildings.
The minimum flue height requirement is 4.5
metres, if this cannot be achieved you will have
to seek the advice of a flue and chimney specialist
to carry out a BS EN13384 Chimney Calculation to
see if the chimney will work.
If the stove is being fitted into a brick chimney or
clay / concrete chimney it must be swept before
installation and checked for soundness and
suitability.
A
B
D
C
G
C
G
F
E
The chimney must also be free from cracks and
blockages. We advise you take the advice of a
registered chimney sweep on this matter.
In all cases we recommend the use of a stainless
steel MI-Flex liner when retro fitting into an
existing fire place, as this will help give you the
optimal flue draft required to operate your stove
correctly.
If the stove is fitted in place of an open fire and
no flue liner is fitted then the chimney should be
swept one month after installation to clear any
soot falls which may have occurred due to the
difference in combustion between the stove and
the open fire.
The connection to the existing chimney can be
made with CE marked BS EN 1856-2 connecting
pipe made from vitreous enamel or 316 stainless
steel with a minimum thickness of 0.6mm.
If no chimney is present the use of an EN1856-part
1 chimney system is required. Example:- MI-Flues
TWPro.
The chimney and connecting flue pipe must not
narrow to less than the size of the outlet socket of
the stove at any point.

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2.5 THE CLEAN AIR ACT 1993 AND SMOKE CONTROL AREAS
Under the Clean Air Act local authorities may declare the whole or part of the district of the
authority to be a smoke control area.
It is an offence to emit smoke from a chimney of a building, from a furnace or from any fixed boiler
if located in a designated smoke control area. It is also an offence to acquire an “unauthorised fuel”
for use within a smoke control area unless it is used in an “exempt” appliance (“exempted” from the
controls which generally apply in the smoke control area).
In England appliances are exempted by publication on a list by the Secretary of State in accordance
with changes made to sections 20 and 21 of the Clean Air Act 1993 by section 15 of the Deregulation
Act 2015.
In Scotland appliances are exempted by publication on a list by Scottish Ministers under section 50 of
the Regulatory Reform (Scotland) Act 2014.
In Northern Ireland appliances are exempted by publication on a list by the Department of Agriculture,
Environment and Rural Affairs under Section 16 of the Environmental Better regulation Act (Northern
Ireland) 2016.
In Wales appliances are exempted by regulations made by Welsh Ministers.
Further information on the requirements of the Clean Air Act can be found here:
https://www.gov.uk/smoke-control-area-rules
Your local authority is responsible for implementing the Clean Air Act 1993 including designation and
supervision of smoke control areas and you can contact them for details of Clean Air Act requirements.
The Mi-Fire Small Tinderbox MF Model: 137-SMF-TBOX, Mi-Fire Medium Tinderbox MF Model:
137-MMF-TBOX & Mi-Fire Large Tinderbox MF Model: 137-LMF-TBOX have been recommended as
suitable for use in smoke control areas when burning wood logs.
The appliances have been factory fitted with a modification to fix the air controls at the correct
minimum position to comply with the smoke control requirements.
This appliance must not be used in a shared flue
system
The minimum flue draft is 12 Pascal’s at nominal
output.
2.4 VENTILATION  FRESH AIR SUPPLY
In order for the wood burning stove to function
at optimum efficiency, air is needed for the
combustion process. There must be sufficient
fresh air coming into the room containing the
wood burning stove.
In very well-insulated houses, or houses with
powerful cooker hoods and/or air conditioning
systems, a vacuum can be created around the
wood burning stove, leading to smoke leakage
and poor combustion.
In normal scenarios this stove complies with the
guidance given in approved Document J of the
Building Regulations that states that purpose
provided ventilation is not required in England
and Wales unless the appliance nominal rated
output is greater than 5kW.
Extractor Fan Warning: There must not be an
extractor fan fitted in the same room as the stove
as this can cause the stove to emit fumes into
the room. If unavoidable the appliance must be
checked with Approved Document (A.D.) 1.21 and
necessary action taken
Action may have to be taken if other heating
appliances are in the same dwelling to make sure
the correct ventilation applies.
2.6 COMMISSIONING
Check all internal parts are fitted correctly and
there are no gaps between the firebricks and
baffles and the log retainer is secure.
During transportation, it may happen that the
baffle plate in steel falls out of place. Therefore,
before using the stove, please make sure that the
baffle plate is properly placed (on the hooks or
fastened to the bolts depending on the model)
Make sure the flue connection if secure and
sealed.

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Check all the levers are operating fully and freely.
CO Alarm: Building Regulations require that
whenever a new or replacement fixed solid fuel or
wood/biomass appliance is installed in a dwelling
a carbon monoxide alarm must be fitted in the
same room as the appliance.
Further guidance is available in BS EN50292:2002
and from the alarm manufacturer’s instructions.
Provision of an alarm must not be considered a
substitute for either
3. LIGHTING AND USING THE STOVE
3.1 IMPORTANT SAFETY INFORMATION
The stove will become warm during use and
therefore it should be treated with all necessary
caution.
Never keep easily combustible fluids such as
petrol in the vicinity of the wood burning stove.
Never use easily combustible fluids to light the
fire in the wood burning stove.
Never empty the ashes when the wood
burning stove is warm. Embers may still be
found in the ash for up to 24 hours after the
fire has gone out. Please wait to empty the ash
until you are sure that there are no embers in
the ash.
The door should be kept closed while the
wood burning stove is in use. While lighting
the fire, the door can stand ajar for the first few
minutes.
In the event of a chimney fire: Close all the
dampers on the wood burning stove and call
the fire-fighting service.
Your installer should have fitted a CO alarm in
the same room as the appliance. If the alarm
sounds unexpectedly, Leave the premises
immediately and contact installer. Let the fire
go out.
The control and handles will get warm when
the wood burning stove is in use. Please use
the glove provided when you operate the
wood burning stove.
3.2 THE FIRST TIME A FIRE IS LIT
The first few times the stove is used, there may
be some smoke and unpleasant odours from the
wood burning stove, which is fairly normal. This
is caused by the heat-resistant paint hardening.
Make sure there is sufficient ventilation during
this stage.
It is also important not to let the fire burn too
fiercely the first 2-3 times, so that the wood
burning stove has time to expand slowly.
You should also be aware that the stove may
make some clicking sounds as it heats up and
cools down – like pouring boiling water into a
sink. These are caused by the great differences
in temperature to which the materials are being
exposed.
During the first firing, which should be carried
out using approximately 1 kg of wood, the
stoking door must be left slightly open and
must not be closed until the stove is cold. This
is to prevent the sealing rope sticking to the
stove.
3.3 THE STOVE AIR CONTROLS
The amount of heat emitted by the stove is
regulated using the air controls built into the front
of the stove.
When using Wood after the stove has reached
operating temperature the stove is controlled by
closing the primary air and adjusting the output
and flame effect with the secondary air control.
With small adjustment made to the tertiary air
when needed.
When using manufactured mineral fuels after
the stove has reached operating temperature the
stove is controlled by reducing the secondary air
control and adjusting the primary air control to
gain the required heat output and flame effect.
3.4 HOW SHOULD I USE MY STOVE WHEN
WOOD BURNING?
The wood burning stove is intended for
intermittent combustion. This means that each
PRIMARY
AIR
CONTROL
AIR WASH
CONTROL
(SECONDARY
AIR CONTROL)

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stoking should burn down to embers before new
logs are added.
To obtain the best possible combustion, you
should regulate the effect/heat output with the
fuel and Air. Burning small logs provides more
powerful combustion than burning large logs
as the surface area is greater and more gas is
released.
The amount of wood in the combustion chamber
is another factor that affects combustion. The
optimum combustion is achieved by placing two
logs in the stove. If you want an enhanced effect,
you can add more logs.
The ideal heat output is reached by burning
approx. 1,5 kg per hour.
3.5 LIGHTING A FIRE WHEN USING WOOD
The fire lighting method is very important for
starting combustion quickly and efficiently.
1. Open all the Air control fully.
2. Place a small log of wood crosswise in the
combustion chamber and put 2 firelighters
close to the log. Put a new small log close to the
firelighters and place several sticks of kindling
at an angle above it in a cross hatch shape. Air
must be able to reach the firelighters, but the
logs should be touching to “warm” each other.
Light the firelighters with a match.
3. Keep the door approx. 1 cm ajar, until the glass
is too hot to touch. Then close the door. When
there are distinct, visible flames and the fire has
taken hold.
Warning: The control and handles will get warm
when the wood burning stove is in use. Please
use the glove provided when you operate the
wood burning stove.
4. Once the first charge of wood has burnt away
leaving a glowing bed of embers you should
be able to shut of the primary air controls.
Slowly open the stove door using the glove
provided and re-stoke the fire with the desired
amount of wood. Close the door and open the
secondary air control to maximum for a few
minutes to allow the new wood to catch fire
then slowly push the air control back into the
stove until the desired effect is reached.
In order to avoid the quenching of the stove
fire by use of oversized logs we recommend a
maximum wood fuel size of 4” (10cm) diameter
by 10” (25cm) length split seasoned logs, with a
maximum moisture content of 20%.
This appliance is designed to operate with the
door closed, except for lighting and reloading,
failure to close the door during operation can
result in fume spillage.
Warning: Properly installed, operated and
maintained this appliance will not emit fumes
into the dwelling.
Occasional fumes from re-fuelling may occur.
However, persistent fume emission is potentially
dangerous and must not be tolerated. If fume
emission does persist, the following immediate
actions should be taken:
Open doors and windows to ventilate room then
leave the premises. Let the fire go out or eject and
safely dispose of fuel from the appliance.
Check for flue or chimney blockage, and clean
if required. Do not attempt to relight the fire
until the cause of the fume emission has been
identified and corrected. If necessary seek expert
advice
3.6 IMPORTANT INFORMATION FOR
WOOD BURNING
With a full load of wood and burning near
nominal output the stove will need to be refuelled
approximately every 1-1.5 hours. One or two large
logs will burn longer than a number of smaller
ones.
Care must be taken that logs do not touch the
baffle or the glass panel. Do not stack logs above
the level of the tertiary air inlet profiling in the rear
vermiculite firebox liners at the back of the stove.
Always make sure that flames are visible above
the wood after re-fuelling for cleanest burning.
Burning without flames above the fuel will create
unnecessary smoke. After re-fuelling open the
primary air control fully for 3 minutes or until the
logs are fully blackened to achieve full flames
above the fuel.
Wood burns best on a bed of ash and it is
therefore only necessary to remove surplus ash
from the stove occasionally. Burn only dry, well-
seasoned wood, which should have been cut, split
and stacked - under cover from rain - for at least
12-24 months with free air movement around the
sides of the stack to enable it to dry out.
Burning wet or unseasoned wood will create tar
deposits in the stove and chimney and will not
produce a satisfactory heat output. Wood that
is not properly dry (‘dry’ is considered to be less
than 20% internal moisture content) uses up
energy from the burn process to evaporate the

10
water inside the wood thus creating very poor
conditions for combustion.
The main cause of burning problems with
wood stoves is due to excessively damp wood.
Wood can appear perfectly dry on the outside
but still contain 40-50% water on the inside. A
moisture meter can be purchased from stove and
equipment suppliers if you wish to check your
wood source is correct. Split a log and check the
inside as well as the outside.
Refuelling on to a low fire bed if there is
insufficient burning material in the fire bed to
light a new fuel charge, excessive smoke emission
can occur. Refuelling must be carried out onto a
sufficient quantity of glowing embers and ash so
that the new fuel charge will ignite in a reasonable
period. If there are too few embers in the fire bed,
add suitable kindling to prevent excessive smoke.
Fuel overloading the maximum amount of fuel
specified in this manual should not be exceeded,
overloading can cause excess smoke.
Operation with door left open Operation with the
door open can cause excess smoke and spillage
into the room. The appliance ‘Must Not’ be
operated with the appliance door left open.
Dampers Left Open: Operation with the air
controls or appliance dampers open can cause
excess smoke. The appliance must not be
operated with air control, appliance dampers
or door left open except as directed in the
instructions.
3.7 LIGHTING A FIRE USING SMOKELESS
FUEL
■ Open the primary and secondary air fully by
pulling out the primary and secondary air
sliders.
■ Lay firelighters on the grate and add a small
amount of kindling wood to the top.
■ Place a small quantity of smokeless fuel on top.
■ Light firelighters safely using matches leave
the door slightly open.
■ When the fire is fully established after a couple
of minutes add more smokeless fuel and close
the door.
■ When the fire has become established, reduce
the amount of secondary by pushing in the
secondary air slider, do not fully close as this will
help to keep the glass clean.
■ The output and flame effect can be altered by
opening and closing the primary air slider.
Care should be taken to ensure that the firebox is
not overfilled with smokeless fuel – it should be
no higher than the log guard.
3.8 IMPORTANT INFORMATION FOR
BURNING SMOKELESS FUEL
When re-fuelling the stove always refuel onto
a bed of hot embers, fully open the secondary
and primary air controls until the new fuel is well
alight, before adjusting the air controls for the
desired setting. If there is insufficient burning
material in the fire-bed to light a new fuel charge,
excessive smoke emission can occur.
Re-fueling must be carried out onto a sufficient
quantity of glowing embers and ash that the
new fuel charge will ignite in a reasonable period.
If there are too few embers in the fire bed, add
suitable kindling to prevent excessive smoke.
Fuel overloading, never overload the stove. The
amount of fuel specified in this manual should
not be exceeded, overloading can cause excess
smoke.
Operation with door left open can cause excess
smoke. The appliance must not be operated with
the appliance door left open except as directed in
the instructions.
Dampers left open, Operation with the air controls
or appliance dampers open fully can cause excess
smoke. The appliance must not be operated with
air controls appliance dampers or door left open
except as directed in the instructions.
Never leave the stove unattended until the new
fuel is well alight. Persistent fume emission is
dangerous and must be investigated. If fume
emission persists, open doors and windows to
ventilate the room and let the fire dies out. Have
the chimney inspected for blockages and clean
if required. Do not relight the fire until the cause
has been found. We recommend that you seek
professional advice.
This appliance has been designed to be burned
with the door closed at all times other than when
re-fuelling. It should not be operated as an open
fire. Typical re-fuelling for smokeless fuel is 2
hours.
Daily Maintenance The ashpan should be
checked and emptied regularly. You should never
allow the ashes in the pan to build up to the level
of the grate. If they are allowed to build up, the
grate will become sandwiched between the ash
below it and above it. This will overheat the grate
and cause distortion and premature wear.

11
4. CLEANING AND MAINTENANCE
4.1 CHIMNEY SWEEPING
Ensure your stove and chimney is swept at least
once a year by a professional accredited chimney
sweep. Use the HETAS find a chimney sweep tool.
www.hetas.co.uk/find-chimney-sweep/
The top baffle must also be cleaned once a year
at least to remove any build-up of ash or residue
from the chimney.
4.2 COMBUSTION CHAMBER
The fireproof tiles in the combustion chamber
eventually wear out and should be replaced when
the cracks are more than 0.5 cm. The durability
of the tiles depends on how often and how
intensively the stove is used.
Spare parts are available from MI-Fires directly or
from your local Mi-Fires dealer.
4.3 GLASS
Wet wood, unsatisfactory chimney draft, and
wrong use of the stove can leave soot stains on
the glass pane. They can easily be removed using
a damp cloth that you dip in cold ash and rub on
the sooty glass.
Special cleaning agents are also available to
remove soot from glass, e.g. the Trollull Stove
Glass Cleaner. The pad neither scratches or
damages the glass and is for multiple usages.
Water or other cleaning agents are not necessary.
It is common maintenance to tighten the glass
fittings shortly after the stove has been installed
as well as to check if the gaskets are properly
placed.
4.4GASKETS
With time, gaskets around glass and door will
wear. We recommend that you inspect them
regularly. If leakages appear, they must be
replaced.
4.5 ASH
The ashpan should be checked and emptied
regularly. You should never allow the ashes in the
pan to build up to the level of the grate.
If they are allowed to build up, the grate will
become sandwiched between the ash below
it and above it. This will overheat the grate and
cause distortion and premature wear
4.6 CLEANING THE STOVE
The stove’s surface is treated with a heat-resistant
Senotherm® paint, which will stay at its best just
by being vacuumed with a small, soft mouthpiece
or dusted with a soft, dry cloth. Do not use spirit or
other solvents, as they will remove the paint.
MI-Fire stoves are painted with a heat-resistant
paint that can withstand temperatures up to 500
degrees.
If the surface of the stove gets scratched or worn,
it can easily be renewed using this type of paint.
The paint is available in black metallic from your
local dealer.
4.7 SPARE PARTS LIST
All spare parts and consumable items are available
directly from MI-Fires or can be purchased from
your local stove specialist.
5. WARRANTY & RECORDING
5.1 MIFIRES STOVES WARRANTY
Terms & Conditions
The Firebox of your MI-Fires Stove is Guaranteed
against manufacturing and material defects for
a minimum period of 12 months from the date of
purchase, you can however extend the warranty
period in a number of ways.
■ Completing and returning the warranty
registration form will increase the warranty to
two years*
■ Installing the stove with an “MI-Flues” flue liner
or chimney system can extend the warranty to
ten years**
The Warranty commences on the date of
purchase.
This warranty will only cover consumable parts if
the purchaser can prove that they were damaged
upon receipt of the stove.
The warranty is non-transferable and is only
available to the original purchaser.
This warranty does not affect your statutory
rights.
In the unlikely event of any failure we will replace
any defective part free of charge, labour cost
excluded.
The Stove and Flue system must be inspected,
serviced and cleaned on an annual basis by
a suitably qualified engineer, certificates
and receipts must be retained as proof of
maintenance.

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EXCLUSIONS & LIMITATIONS
The warranty will be void if the appliance is not
installed by a suitably qualified person, or is not
installed in accordance with the current building
regulations.
The warranty will be void if the appliance is
modified in any way or assembled incorrectly.
MI-Flues Ltd will not be responsible for any
incidental or consequential loss, damage or injury
however caused.
The following parts are considered as consumable
items and as such are not covered by any warranty:
■ Glass
■ Vermiculite insulation panels
■ Vermiculite baffle
■ Secondary steel baffle
■ Door and glass rope seals
■ Paint finish
It is a condition of the warranty that the stove
is only used in accordance with the installation
instructions, and is not subjected to misuse or
neglect, including the use of non-recommended
fuels.
* The Warranty registration form is found at the
rear of the Installation instruction Manual.
** For the context of the warranty, an MI-Flues
flue liner or chimney system is described
as a complete flue system purchased from
MI-Flues Ltd or one of its distributors. The
complete system must comprise exclusively
of the correct components taken from the MI-
Flues product range.
5.2 INSTALLER DETAILS AND HAND OVER CHECKLIST
Dealers Contact Details
HETAS Number Date of Purchase
Installers Contact Details
HETAS Number Date of Purchase
Appliance serial number
Flue draft test complete? YES NO Pascal Rating
Type of Flue System
Unlined Masonry Diameter Manufacturer
Installation instructions left with customer YES NO
Lined Masonry Diameter Manufacturer
Installation instructions left with customer YES NO
Clay Pot Diameter Manufacturer
Installation instructions left with customer YES NO
Insulated Twin Wall System Diameter Manufacturer
Installation instructions left with customer YES NO

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5.3 ANNUAL SERVICE  SWEEPING RECORD
DATE ENGINEER/SWEEP NAME CERTIFICATE
RETAINED

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5.4 WARRANTY REGISTRATION
To validate and start your warranty please fill out this form and return
it to:
MI-Flues Ltd, MI-Fires Warranty Registration, Taymin Business Park, Mitcham Road, Blackpool,
Lancashire, FY4 4QN
Your Details
Name
Address
Postcode
Contact Number
Email
Model name
Serial number
Installation date
Installer name
Installer HETAS
Registration No
■ Fast Clean
■ Scratch Free
■ Clear View
Available on-line at www.mi-fires.com
or from all good retailers
THE BEST STOVE GLASS
CLEANING SPONGE
Perfect dry cleaning for all stove glass

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6. STOVE DIMENSIONS
SMALL TINDERBOX MULTIFUEL

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MEDIUM TINDERBOX MULTIFUEL

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LARGE TINDERBOX MULTIFUEL

www.mi-fires.com
MI-Flues Ltd
Taymin Business Park
Mitcham Road
Blackpool, Lancashire
FY4 4QN
sales@mi-flues.com
sales@mi-fires.com