Heat Design FW11C User manual

FIREWARM CASETTE STOVE
10.7kW Nominal Output
FW11C
Installation and Operating
Instructions
Please fix label with serial number of stove
before putting manual into stove
Please hand these instructions to the stove user when the installation is complete. Leave the stove ready for
operation and instruct the user in the correct use of the appliance and operation of controls.
Important: –This product must be installed by a suitably qualified installer.
Heat Design
30 –60 Hawthorn Road
Western Industrial Estate
Naas Road
Dublin 12
www.heatdesign.ie
PLEASE READ ALL THESE INSTRUCTIONS CAREFULLY!
For safety reasons it is essential that your stove is correctly installed and operated. Firewarm Stoves
cannot accept responsibility for any fault or consequential problems arising through incorrect
installation or operation.
The VIT11C stove has been exempted under the clean air act of 1993 as suitable for use in smoke
control areas when burning seasoned wood logs. The stove contains a factory fitted secondary
air stop which ensures that the secondary air is permanently open 5mm minimum. Please
carefully read the instructions on wood burning contained in this manual, these MUST be adhered
to at all times. Please see page 15 of the manual for further reference to the clean air act of 1993

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TABLE OF CONTENTS
Section Page No
1. List of Components 2
2. Component Identification and Assembly 2
3. Stove Commissioning Checklist 3
3. Installation Instructions 3
3.1 Warnings and important safety information 3
4 Installation Information 4
4.1 Warnings and Important Safety Information 4
4.2 Health & Safety Precautions 4
4.3 Site Requirements 5
4.4 Fitting the Stove 6
5. Technical Data 8
6. Operating Instructions 9
6.1 Air controls 9
6.2 Cleaning 10
6.3 Fuels 10
6.4 Notes on Wood Burning 10
6.5 Notes in burning Solid Fuel 10
6.6 Lighting the stove 11
6.7 Re-fuelling 11
6.8 Shutting down 12
6.9 Maintenance 12
6.10 Seasonal Use 12
7. Safety Notes for your Guidance 12
8. Frequently Asked Questions 13
9. Spare Parts List & Codes 14

2FW11C 18-12-12
1. List of Components
2. Component Identification and Assembly
Your Firewarm Cassette Stove is shipped securely packed and strapped. Carefully remove any straps
and remove all wood, cardboard and any plastic packaging, open the door and remove all the
contents. See List of Components section and check contents carefully.
2.1 To remove the baffle plate, carefully lift the hooks at the front up and over the pegs and slide the baffle
down and remove through the front door. Then remove the two side firebricks and the two rear
firebricks. Handle & store very carefully to one side where they will not get broken.
2.2 Now lift up the grate and carefully remove this from the stove.
2.3 Now proceed to install the stove according to these instructions and current installation standards or
HETAS advice. The internal parts of the stove can be re-assembled as the reverse of the previous
removal instructions.
Fig 2 –FW11C Stove Assembly and controls
Description of Parts Qty
FW11C Stove Assembly 1
Stove Tool 1
Ash Pan 1
Instruction Manual 1
Lower Baffle 1
Stove Operating Glove 1
Touch up paint 1
Warranty Card 1
Fig 1 –Stove Tool

3FW11C 18-12-12
3. Stove Commissioning Checklist
Please complete the form below as it will be of great assistance in the unlikely event that there is a problem with the
stove or a warranty claim needs to be made. Please contact the installer or dealer if there is a problem.
Retailer from whom the appliance was purchased
Name: …………………………………………………………………………..
Address: …………………………………………………………………………
……………………………………………………………………………………
Telephone Number: ……………………………………………………………...
Complete upon stove installation
Date of Installation: ……………………………………………………
Model Number: FW11C
Serial Number: …………………………………………………………
Fitter/Plumber
Name: …………………………………………………………………..
Address: ………………………………………………………………...
Telephone Number: …………………………………………………….
Commissioning Checklist –Installer to complete and sign-off
Stove correctly flued according to building regulations
Flue swept and integrity of flue verified
Smoke test completed on installed stove
Spillage test completed
Use of appliance and operation of controls explained to end-user
Check that specified clearance to combustibles has been adhered to
Instruction manual handed to end-user
Installer Signature: ……………………………Installer Name (print): ………………………………

4FW11C 18-12-12
4. Installation Information
4.1WARNINGS AND IMPORTANT SAFETY INFORMATION
READ THESE INSTRUCTIONS CAREFULLY BEFORE INSTALLATION!
These instructions cover the basic principles to ensure satisfactory installation of the stove, although detail may need slight
modification to suit particular local site conditions. In all cases the installation must comply with current local regulations
including Building Regulations, Local Authority Byelaws and other specifications or regulations including Ireland, UK or
EU standards referred to as they affect the installation of the stove. Approved Document J is particularly important for
England and Wales and can be downloaded for no cost at:
http://www.planningportal.gov.uk/england/professionals/en/4000000000503.html Also of importance are Approved
documents L1 A and B conservation of fuel and power. The Domestic Heating Compliance Guide will also be found useful.
Important Chimney Warning
This stove must not be installed into a chimney that serves any other heating appliance.
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.
Cleaning and Chimney Sweeping
The appliance, flue & chimney must be cleaned and checked internally and externally regularly in use
and especially after a period on disuse (e.g. after summer). Lift down the baffle at least weekly to check
for build up of soot or debris on the top from the flue pipe. Remove the baffle and check the flue spigot and
connector is fully clear at regular intervals. The chimney and flue connector must be swept at least annually
by a Hetas approved or suitably qualified chimney sweep, more often when used with sooty fuels or damp
wood. Any loose, broken or leaking joints or flue ways MUST be repaired immediately.
Fuels
Only use recommended fuels. The appliance can be damaged by burning anthracite, petroleum coke, liquid
fuels or general rubbish and this will invalidate your warranty and risk your personal safety. The appliance
must not be used as a rubbish incinerator.
Maintenance
Annual checking and servicing of the appliance and flue by a competent engineer is recommended.
Ventilation
Adequate ventilation is ESSENTIAL for the safe and efficient operation of any solid fuel or wood burning
appliance. Ventilation MUST be provided where required by the stove output or flue under-performance.
Keep all ventilation clear and free of blockage.
4.2 Health And Safety Precautions
Handling
Adequate facilities must be available for unloading and site handling. Firewarm Cassette Stoves are very
heavily built so always ask for assistance when lifting and siting the stoves.
Fire Cement
Some types of fire cement are caustic and should not be allowed to come into contact with the skin. In case
of skin contact, wash immediately with plenty of water.

5FW11C 18-12-12
Asbestos
This stove contains no asbestos. If there is a possibility of disturbing any asbestos in the course of
installation then please seek specialist guidance and use appropriate protective equipment.
Metal Parts
When installing or servicing this stove, proper care should be taken to avoid the possibility of personal
injury.
4.3 Site Requirements
Chimney
The chimney height and the position of the chimney terminal should conform to Building Regulations.
Minimum chimney height is 4.5m. Check that the chimney is in good condition, dry, free from cracks and
obstructions. The diameter of the flue should not be less than 150mm and not more than 200mm. If any of
these requirements are not met, the chimney should be lined by a suitable method. The chimney must be
swept before connection to the stove.
Where the chimney is believed to have previously served an open fire installation, it is possible that the
higher flue gas temperature from the stove may loosen deposits that were previously firmly adhered, with
the consequent risk of flue blockage. It is therefore recommended that the chimney be swept a second time
within a month of regular use after installation.
If you have any doubts about the suitability of your chimney, consult your local dealer/stockist or chimney
specialist. If there is no existing chimney then either a solid fuel compatible prefabricated block chimney or
a twin-walled insulated stainless steel flue to BS 4543 can be used. These chimneys must be fitted in
accordance with the manufacturer‟s instructions and Building Regulations.
Ventilation
Purpose provided ventilation is recommended, however, it is not required in England and Wales unless the
appliance rated output is greater than 5kW. Over 5kW 5.5 cm2of ventilation (550mm2) is required for every
kW output above 5. For example 6.5 kW requires 8.25 cm2and 8 kW needs 16.5cm2. In any case, if
difficulty in starting the fire or any fuming is experienced, ventilation must be put in place as required to
eliminate these flue problems. If a flue draught stabiliser is fitted then extra ventilation is required –see
Document J of the Building Regulations.
Flue Draught
A flue draught of minimum 1.2mm to a maximum 2.5mm water gauge (12 to 25 Pascals) is required for
satisfactory appliance performance. The flue draught should be checked under fire at high output and, if it
exceeds the recommended maximum, a draught stabiliser must be fitted so that the rate of burning can be
controlled to prevent over-firing.
Material Clearances
Safety Distances from Combustible Surfaces:
Model Back Side
FW11C 400mm 200mm
This appliance must be installed in a recess which must not contain any combustible materials. Wooden
battens and plasterboard should not be used within the clearance to combustibles.
In addition it is strongly recommended that any furniture or other combustible materials are kept at least
1000mm clear from the front of the stove and any mantle is at least 300mm above the stove.

6FW11C 18-12-12
Hearths:
The FW11C stove require a 125mm thick non-combustible constructional hearth beneath them to protect the
building, this can include any solid non-combustible floor. A non-combustible superimposed hearth forming
an apron of at least 225mm at the front of the stove and 150mm on either side must also 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 must 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.
4.4 Fitting the stove
Installing the Stove
Please note that the each installation is unique to the particular household and it is not possible to give
recommendations in this manual to cover every situation. The installation must comply with building
regulations and be completed using “Best Practice” methods.
Note that most fireplaces have a supporting Lintel. Never remove this without first supporting the
remaining structure of the building. The stove of flue system must not be used to support the structure
of the building.
The fitting of the cassette stove is different depending on whether the chimney is already lined of not. The
fitting in both scenarios is described below. Note that it is best practice to line every chimney.
A –Installing a stove into a chimney that needs to be fully lined (see fig. 3)
(i) Ensure the fireplace is suitable for the stove. The opening should measure 660-730mm wide,
550-580mm high and a minimum of 350mm deep. The fireplace must be suitable for solid fuel.
The hearth must be level. The fireback needs to be removed and there needs to be a solid base
under the fireback, level with the hearth as the stove will need to be secured to this.
(ii) Drop the flexi liner down the chimney using fig. 3 as guide. Ensure a flexi stop or plate is used at
the bottom of the clay lined/unlined chimney to stop the loose vermiculite from falling down.
Note the height of the flue collar of the stove and cut the flexi flue to length accordingly and fit a
flexi-adaptor to the flexi liner and seal on the inside between the flexi liner and flexi adaptor with
fire cement. It is important this joint is airtight for proper operation of the stove. Leave the flexi
liner and adaptor hang down and the opening is now ready for the stove to be fitted.
(iii) Remove the lower baffle from the stove by lifting the front of the baffle and pull it forward a
little which will allow it to drop down and be easily removed from the stove and put to one side.
Carefully remove the firebricks and place to one side. Note the fire bricks can be brittle
(especially after use) so handle with care. Remove the ash pan. Remove the screw form the
bottom of the riddle grate and remove the riddle grate from the stove Lift the grate to expose the
four fixing holes. Also loosen the two screws securing the top baffle and pull the baffle forward
until it drops down and remove it. The front door can also be easily removed before lifting into
position if desired.
(iv) Lift the stove into position taking care not to scratch the hearth and push into the opening until
the front trim is up against the front of the opening. Drill through the four holes in the base of the
appliance into the concrete base under the appliance using a 5.5mm concrete bit. Use the four
screws and washers provided to fix the appliance securely.
(v) Fill any void at the back or sides of the box with 6:1 vermiculite / cement mix or any other good
quality non-combustible insulation material. It is important that the back and sides of the box are
well insulated.
(vi) Always use a minimum of 600mm of single wall connecting flue between the stove and the
flue where possible. Connect the flexi flue adaptor to the single wall connecting flue or to the

7FW11C 18-12-12
collar of the stove and seal between the collar and the inside using fire cement. It is important
this joint is airtight for proper operation of the stove.
(vii) Replace the door, baffles, liner and grates by completing step (iii) in reverse.
B –Installing a stove into a chimney that is already lined (see Fig. 4 or Fig. 5)
(i) The integrity of the chimney must be thoroughly inspected and verified by a suitably qualified
professional.
(ii) Ensure the fireplace is suitable for the stove. The opening should measure 410-480mm wide,
550-580mm high and a minimum of 350mm deep. The fireplace must be suitable for solid fuel.
The hearth must be level. The fireback needs to be removed and there needs to be a solid base
under the fireback, level with the hearth as the stove will need to be secured to this.
(iii) Push a 6” to 8” adaptor (or offset adaptor if needed) up into the clay flue liner and seal using fire
cement. Push the required length of single wall or flexi liner onto the adaptor. If single wall is
being used push a 20° single wall angle onto the end of the straight length and support this in
preparation for the stove. If flexi flue is being used fit a flexi-adaptor to the flexi liner and seal on
the inside between the flexi liner and flexi adaptor with fire cement. It is important this joint is
airtight for proper operation of the stove. Leave the flexi liner and adaptor hang down and the
opening is now ready for the stove to be fitted.
(iv) Remove the lower baffle from the stove by lifting the front of the baffle and pull it forward a
little which will allow it to drop down and be easily removed from the stove and put to one side.
Carefully remove the firebricks and place to one side. Note the fire bricks can be brittle
(especially after use) so handle with care. Remove the ash pan. Remove the screw form the
bottom of the riddle grate and remove the riddle grate from the stove. Lift the grate to expose the
four fixing holes. Also loosen the two screws securing the top baffle and pull the baffle forward
until it drops down and remove it. The front door can also be easily removed before lifting into
position if desired.
(v) Lift the stove into position taking care not to scratch the hearth and push into the opening until
the front trim is up against the front of the opening. Drill through the four holes in the base of the
appliance into the concrete base under the appliance using a 5.5mm concrete bit. Use the four
screws and washers provided to fix the appliance securely.
(vi) Fill any void at the back or sides of the box with 6:1 vermiculite / cement mix or any other good
quality non-combustible insulation material. It is important that the back and sides of the box are
well insulated.
(vii) Always use a minimum of 600mm of single wall connecting flue between the stove and the
flue where possible. Connect the single wall or flexi flue adaptor to the collar of the stove and
seal between the collar and the inside using fire cement. It is important this joint is airtight for
proper operation of the stove.
(viii) Replace the door, baffles, liner and grates by completing step (iii) in reverse.
Commissioning and Handover
Upon completion of the installation, allow a suitable period of time for any fire cement and mortar to
dry out. A small fire may then be lit and checked to ensure the smoke and fumes are taken from the
stove up the chimney and emitted safely to atmosphere.
Advise the customer not to run the stove at full output for at 3 –4 days. Explain that the stoves can
provide much more or less than their rated heat outputs depending upon how they are burnt and fuels
and fuel loads used.
On completion of the installation and commissioning, ensure that the operating instructions and
operating tools (including glove) for the stove are left with the customer. You must be sure to advise
the customer on the correct use of the appliance with the fuels likely to be used on the stove and
warn them to use only the recommended fuels for the stove.
Advise the user on what to do should smoke or fumes be emitted into the room from the stove –see
Safety Notes section. The user should be warned that they MUST use a suitable fireguard in the
presence of children, aged and/or infirm persons.

8FW11C 18-12-12
5. Technical Data
*Average reading at nominal output
Technical Specifications
Fuel
Wood
Solid Fuel
Nominal Heat Output (kW)
10.7kW
10.4kW
Efficiency (%)
76.7
75.6
CO@13% O2
0.08
0.08
*Flue Temp: (°C)
347
343
Flue gas mass flow: (g/s)
8.2
9.3
Flue Outlet Size (Inch)
6
6
Fuel Consumption (kg/hr)
3.15
1.5
Max Log Length:
550mm
550mm
Weight
84kg
Recommended
fuel
Wood
Seasoned wood with moisture
content less than 20%
Solid Fuel
Manufactured Smokeless coal
suitable for closed appliances
Appliance tested to the requirement of standard EN13229 : 2001
/ A2 : 2004

9FW11C 18-12-12
6Operating Instructions
This appliance is not designed for open operation and therefore should not be operated with the doors open,
this could cause excessive smoke and could also harm the appliance.
This stove is designed to burn cleanly with high efficiency. When used correctly this stove will burn very
efficiently and cleanly with the very useful feature of clean glass. However, for this product to work
properly it must be used correctly.
It is essential that the stove has an adequate air supply for combustion and ventilation. The primary,
secondary and tertiary air inlets must be kept clear from obstruction.
Warning! This appliance will be very hot when in operation and due care should be taken when operating
the controls. A leather glove is provided to assist safe operation.
Do not use an aerosol spray on or near the stove when it is alight.
6.1 Air Controls
Primary Air
Primary air is controlled via the sliding air control at the bottom of the stove. This provides a conventional
air under draught to the bed of the fire. The primary air is used when lighting the stove or when the fuel bed
goes very low. Once the stove is properly lit the primary air should be fully closed when burning wood.
Sliding the control to the right increases the primary air while sliding the control to the left decreases the
primary air.
Secondary Air (Airwash)
The Cassette stove has a sophisticated “air wash” system designed to keep the glass clean. This secondary
air supply to the stove is controlled via a sliding air control located on the top centre of the stove, just above
the door. If you want clean glass, always leave this control open some way whilst burning unless the stove is
being shut right down for a long period. Moving the sliding control towards the wide side of the arrow (to
the right) increases the burn rate whilst moving it towards the narrow side(to the left) reduces it.
Tertiary Air
This appliance is also fitted with a preheated tertiary air system which burns otherwise uncombusted gases
in the products of combustion thereby improving efficiency, increasing heat output and decreasing unwanted
atmospheric emissions. At certain stages of burning you will notice “jets” of flame emerging near the air
holes to the rear of the firebox.
Multifuel Grate
This stove is fitted with a versatile multifuel riddle grate with suitable air slots to burn most fuels. When
burning coal type fuels it is important to riddle the fire well where required to de-ash regularly, to ensure
that the primary airflow is not impeded, as a build-up of ash when burning coal can damage the cast iron
grate.The fire is riddled by moving the primary air control quickly from side to side. A build up of ash when
burning wood will not usually harm the grate and indeed wood burns better on a bed of wood ash building
up. Excessive wood ash build up is not to be recommended however as this would decrease the size of the
firebox and consequently decrease the amount of fuel that can be put in the stove.
Ashpan
It is essential that you empty the ash pan every day. Use the thick end of tool to hook onto and lift the ash
pan out of the stove. Replace the empty ashpan in the stove making sure to push it fully into place so that all
the ash falls into it. DO NOT allow ash to build up underneath the bed as this may cause damage to the
grate. Never operate the stove without the ashpan in place.

10 FW11C 18-12-12
6.2 Cleaning
Glass: Despite the advanced air wash system provided, the glass will still need cleaning from time to time
depending on the fuel quality and burning rates used. Never clean glass when the stove is hot. Always use
stove glass cleaner or ceramic hob cleaner, which is available from your stove retailer. As an alternative, use
a wet cloth with some of the wood ash if burning wood but be very careful to use very clean ash so as not to
scratch the glass.
Outer body: The outer body simply needs to be dusted from time to time. DO NOT use any kind of
furniture polish or cleaning agent other than your stove suppliers recommended paint.
Inner firebox: Brush the inside of the firebox clean from time to time to check the integrity of the plates
and liners etc. It is not normally necessary to re-paint inside the firebox due to the high temperatures that
mean that the paint does not have much effect before being burnt off. Steel and vermiculite board liners are
resilient firebox materials and will give reliable service without major cleaning or work on the firebox. The
liner boards may require replacement fairly regularly depending upon fuels and the type of usage
experienced. Lining boards are not covered by warranty, as they are a wearing consumable part.
Baffle: It is essential to check the top of the baffle for build up of soot and ash regularly when in use and
after a long period of no use. From time to time remove the baffle if necessary to ensure that the flue way
entrance is clear.
6.3 Fuels
Wood
Burn only seasoned timber products with a moisture content of less than 20%. To obtain this moisture
content allow cut wood to dry for at least 12-18 months. Do not burn construction timber, treated of
painted wood, manufactured board or pallets.
Solid Fuel
Burn only manufactured smokeless fuels listed as suitable for use in a closed appliance. Do not burn
anthracite, “petro-coke” or other petroleum based fuels as this will invalidate the warranty.
6.4 Notes on Wood burning
With a full load of wood, the stove will need to be refuelled approximately every 1 to 1.5 hours depending
on burn rate. Wood can be stacked in the stove but care must be taken that logs do not touch the baffle. Do
not stack fuel above the level of the tertiary air inlets at the back of the stove.
Always make sure that flames are visible above the wood after re-fuelling for cleanest burning. Open the air
wash full for 1 to 2 minutes to achieve full flames above the fuel. Carefully adjusting the secondary air
controls and fuel load will then control the burn rate of the stove. Wood burns most efficiently with the
primary air controls closed and the secondary (air wash) controls open about 25%, this setting will give the
stoves nominal output of 10.7kW.
See also: section entitled „Lighting the Stove‟.
Wood burns best on a bed of ash and it is therefore only necessary to remove surplus ash from the stove
occasionally. If the grate is completely clear, place a few handfuls of ash into the slots in the grate to
help the firebed build up.
Burn only dry, well-seasoned wood, which should have been cut, split and stacked - under protection 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 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 some stove and equipment suppliers if you wish to
check your wood source is correct.
6.5 Notes on Burning Solid Fuel
NEVER burn solid fuel in the stove without first fitting a solid fuel kit.
See section 6.6 on lighting the stove. After the fire has become established close the airwash until it is
approximately 25% open and use the primary air control to set the burn rate. De-ash the stove by riddling a

11 FW11C 18-12-12
few times before adding new fuel. Open the primary air 100% for a few minutes before refuelling to
establish a good hot bed. Leave the primary air fully open for 4-5 minutes after adding the new fuel and then
adjust until approximately 25% open to achieve nominal output of about 10.7kW. With experience you will
learn to adjust the controls to establish personal settings. It is better to refuel little and often, this burns the
fuel more efficiently and prolongs the life of the stove.
6.6 Lighting the Stove
We recommend that you have two or three small fires before you operate your stove to its maximum heat
output. This is to allow the paint to cure in steadily and to give a long service life of the paint finish. During
this curing in process you may notice an unpleasant smell whilst the finishes finally cure. It is non-toxic, but
for your comfort we would suggest that during this period you leave all doors and windows open.
First, open the primary and secondary air wash control fully. Load the firebox with plenty of starting fuel,
i.e. paper, dry sticks and/or firelighters. Light the fire at the base leaving the primary and secondary air
control fully open. Leave the door slightly ajar for 10 minutes to enhance initial starting and reduce smoke
emission –DO NOT leave the stove unattended if the door is left ajar. Allow the fuel to reach a steady glow
and build the fire up gradually by adding a few small sticks or well split logs at a time. Once you have a
good fire bed established across the grate, further fuel can be added step by step as required. Don‟t be
tempted to overload the fire bed with fuel all at once or close down the air controls too much until the fire is
really well established for some time. Once the ignition period is well under way close the primary air and
gradually reduce the secondary air wash control opening to establish the burning intensity you require
(usually open 25% approx.).
6.7 Re-fuelling
When burning wood, the fire will die down as the fuel is consumed. When the flames disappear and the
remainder is breaking down into glowing embers it is an appropriate time to consider re-fuelling. NOTE: If
the flames disappear and there are still lumps of solid wood left this indicates excessive moisture in the
wood or insufficient air supply/flue draught.
Note: To eliminate unwanted smoke emission, after loading new logs on to the fire, open the air wash
control up fully for 1-2 minutes to boost the fire and get flames issuing from the top of the fuel as soon as
possible. When flames are well established, reduce the air wash to the running setting required. Burning
without flames above the fuel will create unnecessary smoke. Do not operate the appliance with the air
controls fully open for a prolonged period as it will cause over firing and may result in smoke being
produced.
Loading 1 to 2 medium sized logs will produce a good output with reasonable burn time, generally small
logs will burn up quicker producing a high output for a short time and a large log will take longer to burn
and produce less output over a given time. These appliances are approved for intermittent operation on wood
(0.75 to 1.5 hour burn cycles) although much longer burn times can be achieved by fully loading the firebox,
getting the fuel burning well and then shutting the air controls down. The fire will then often need reviving
by first de-ashing and then using small pieces of wood and plenty of air to get flames issuing from the wood
again.
Fig 5. –Three piece Multifuel Kit

12 FW11C 18-12-12
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 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
Four good size logs is a sufficient quantity of fuel to achieve the rated output from this appliance. Never
exceed this amount of fuel and never stack the fuel too high in the stove so as it touches the baffle or blocks
the tertiary air holes as this may cause smoke to be produced.
6.8 Shutting Down
The stove will normally shut down by itself as the fuel is consumed. In order to shut down the stove for
other reasons, close the primary air controls (if open), then close the secondary air control. If the controls are
left in this position, the fire will eventually burn out. If you want to revive the fire open the secondary air
controls fully.
Warning! - The stove will remain very hot for a considerable time after the fire has died down or been
extinguished.
Warning!- Petroleum coke fuels or household waste must not be burnt on this appliance.
6.9 Maintenance
Inspect the inside of the firebox and above the baffle plate every week during use. See chimney cleaning
section in section 3.1 Warnings and Important Information. Only use manufacturers recommended
replacement parts on the appliance
6.10 Seasonal Use
Remove the baffle and inspect the inside of the stove and the flue ways and ensure they are 100% clear after
a period of disuse, for example if the stove is not used during the warmer periods of the year. Also set the air
controls half open to keep the appliance ventilated and stop the build-up of any moisture inside.
7 Safety Notes for your guidance
FIRES CAN BE DANGEROUS –Always use a fireguard in the presence of children, the elderly or the
infirm.
DO NOT perform modifications to the appliance as this could seriously compromise safety in
operation.
DO NOT OVERFIRE –it is possible to fire the stove beyond its design capacity, this could damage the
stove, so watch for signs of over firing –if any part of the stove starts to glow red, the fire is in an over fire
situation and the controls should be adjusted accordingly. Never leave the stove unattended for long periods
without first adjusting the controls to a reduced and safe setting –careful air supply control should be
exercised at all times.
WARNING –FUME EMISSION
Properly installed and operated, this appliance will not emit fumes. Occasional fumes from de-ashing and
refuelling may occur which is not normally of serious concern. However, persistent fume emission is
potentially dangerous and must not be tolerated.
If fume emission does persist, then the following immediate action should be taken: -
1. Open doors and windows to ventilate room
2. Let the fire out, or remove and safely dispose of fuel from the appliance.
3. Check for flue chimney blockage and clean if required.
4. Do not attempt to re-light the fire until the cause has been identified and corrected.

13 FW11C 18-12-12
If necessary, seek professional advice from chimney or stove specialists.
Important! –Do not fit an extractor fan in the same room as this appliance.
IN THE EVENT OF A CHIMNEY FIRE
Raise the alarm to let others in the house know.
Call the Fire Brigade
Reduce the appliance-burning rate by closing all air controls fully.
Move furniture and rugs away from the fireplace and remove any nearby ornaments.
Place a fireguard or spark guard in front of the stove.
Feel the chimneybreast for sign of excessive heat.
If the wall is becoming hot, move the furniture away. Ensure that the Fire Brigade can gain access to your
roof space in order to check this area for signs of fire spread.
8Frequently Asked Questions
1 Do stoves require a chimney? All of our multi fuel and wood burning stoves require a suitable chimney
or professionally installed flue system.
2 How do I clean the chimney? You will require a chimney sweep to clean the chimney. It is essential to
provide a dedicated chimney cleaning access door when installing the flue of the stove in some situations. In
other situations the chimney can be swept through the firebox.
3 Who should install my stove? Firewarm Stoves want you to enjoy the maximum performance from your
appliance. To ensure this, it is essential that they are installed correctly. We strongly recommend that your
stove is installed by a suitably qualified installer e.g HETAS.
4 How do I regulate the heat output? Each stove has various air controls, which will allow you to easily
regulate the heat output and refuelling rate.
5 What warranty do I get? Firewarm Stoves will replace, free of charge, any working part that fails (under
normal operating conditions) within 12 months of purchase. Consumables such as glass, firebox lining
boards or stove rope and adhesives are not guaranteed. A call out charge will apply if our engineer attends
any stove problem that is not related to product failure.
6 Where can I get spare parts? Your local Firewarm Stove retailer will be pleased to supply spare parts and
to provide any other information you require.
7 Can the doors be left open while burning? For safety and heat efficiency the doors should remain closed.
8 Why is the stove smoking when lit? A flue with back draught problems is almost certainly the cause of a
smoking stove. Also check adequate ventilation is present. A qualified fitter should complete both a smoke
pressure and flow test prior to fitting the stove to ascertain the integrity of the flue.
9 Why should I “Run in” my stove? To begin, light a series of small fires over a period of a few days to
allow the paint finish to cure. The stove is finished with a highly heat resistant paint. The finish can be
renovated with stove paint available from your local stove retailer. If the stove is not “run in” correctly, this
may cause the paint to discolour and flake.
10 What is Over Firing? Your stove should never be used in a manner to cause over firing. Over firing can
be caused by over loading the stove with fuel, and with primary controls open. If any part of stove glows
"red" your stove is over firing and your draught control should be adjusted to restrict airflow to stove. Over
firing can cause permanent damage to the appliance, which is not covered by warranty.

14 FW11C 18-12-12

15 FW11C 18-12-12
Component
FW11C
Component
FW11C
01
Door Glass
Y1HDC11D01A
27
Primary Air Control including handle
Y1HDC06D33B
02
Glass Brackets and Screws
Y1HDC11D02A
36
Outer skin for Insert/Casette
Y1HDC11D43A
03
Door Handle assembly
Y1HDC11D03A
37
Inner Skin for Insert/Cassette
Y1HDC11D44B
04
Coalcatcher
Y1HDC11D04A
39
Multifuel Kit
Y1HDC11D46A
05
Back Plate/fireboard
Y1HDC11D05B
40
Tertiary Air box
Y1HDC11D47A
06
Side Plate Left/fireboard
Y1HDCD06B
41
Front Trim for Cassette
Y1HDC11D48B
07
Side Plate Right/fireboard
Y1HDCD07B
44
Door Hinge/Pin
Y1HDCD51B
08
Riddle Grate
Y1HDD11A
46
Rope Ø14mm (cut to size)
Y1HDC11D54A
09
Grate for Riddle Grate
Y1HDC06D12A
47
Rope Ø5 (full roll)
Y1HD55A
16
Baffle Plate
Y1HDC11D19B
48
Rope Flat 2mm x 8mm (full roll)
Y1HD56A
17
Baffle Plate Upper
Y1HDC11D20B
49
Bottom Plate/Fireboard
Y1HDC11D57A
18
Airwash slider plates
Y1HDC11D21B
50
Grate Extensions
Y1HDC11D58A
20
Collar
Y1HDC26E
51
Plates/Board (Set)
Y1HDC11D59A
22
Ashpan
Y1HDCD28B
53
Door Latch roller
Y1HDCD61A
23
Glove
Y1HDC29A
54
Bottom Decorative Beading - Door
Y1HDC11D62A
25
Ashpan Tool
Y1HDCD31B
55
Top Decorative Beading - Door
Y1HDC11D63A
26
Door
Y1HDC11D32A
9. FW11C –Spare Parts and codes

16 FW11C 18-12-12
Heat Design, 30 –60 Hawthorn Road, Western Industrial Estate, Naas Road, Dublin 12
T: 01 408 9192 F: 01 408 9193
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).
The Secretary of State for Environment, Food and Rural Affairs has powers under the Act to
authorise smokeless fuels or exempt appliances for use in smoke control areas in England. In
Scotland and Wales this power rests with Ministers in the devolved administrations for those
countries. Separate legislation, the Clean Air (Northern Ireland) Order 1981, applies in Northern
Ireland. Therefore it is a requirement that fuels burnt or obtained for use in smoke control
areas have been "authorised" in Regulations and that appliances used to burn solid fuel in
those areas (other than "authorised" fuels) have been exempted by an Order made and signed
by the Secretary of State or Minister in the devolved administrations.
Further information on the requirements of the Clean Air Act can be found here :
http://smokecontrol.defra.gov.uk/
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”